Base station, communication terminal, signal transmission method and reception method

FIELD: information technology.

SUBSTANCE: one aspect of the invention discloses a base station which includes a scheduling module configured to perform frequency scheduling for each subframe; a control channel generating module for generating a control channel having general control information distributed into radio communication resources, distributed in the system bandwidth, and dedicated control information distributed into one or more resource blocks allocated for each selected user device; a transmission signal generating module for generating a transmission signal via time-division multiplexing of the general control information and the dedicated control information in accordance with the scheduling information from the scheduling module. The general control information includes a format indicator which reflects one of predetermined alternatives which indicates the number of characters occupied by the general control information in one subframe. The general control information includes information elements with predetermined data length. The number of information elements is less than or equal to the defined value of the set contained in broadcast information.

EFFECT: efficient transmission of control channels by communication terminals in a communication system when the bandwidth allocated for the communication system contains multiple resource blocks, each having one or more subcarriers.

35 cl, 46 dwg

 

The technical field to which the invention relates.

The present invention generally relates to wireless communication technologies. In particular, the present invention relates to a base station, communication terminal, method of signal transmission and method of reception of a signal used in the communication system in which scheduling is applied on the frequency and transmission on multiple carriers.

The level of technology

In wireless communications, there is a growing need for broadband wireless access systems, which provide efficient, high-speed and high-bandwidth communication. For downlink in such a system to achieve high-speed communication with high throughput is planned to implement such a scheme with multiple frequencies multiplexing orthogonal frequency division (OFDM, orthogonal frequency division multiplexing). In the next generation systems to increase the efficiency of use of frequencies and thereby increase throughput, it is recommended that the planning frequency.

As shown in figure 1, in next generation systems, the bandwidth of the system is divided into multiple resource blocks (in this example, three resource block), each of which contains one or more subcarriers. The resource blocks may be referred to as the hour is now plots. Each terminal is assigned one or more resource blocks. In the way of planning for the frequency to increase transfer efficiency or throughput of the overall system resource blocks are assigned preferably to the terminal, having a good channel state in accordance with the quality of the received signal or indicator of channel quality (CQI, channel quality indicator), measured on the basis of downlink pilot channels and the reported terminals for the respective resource blocks. The pilot channel is a signal, known as the sending side and receiving side, and may also be referred to as the reference signal, the known signal and the training signal. When using planning frequency terminals must provide scheduling information indicating the results of planning. Information planning is reported in the terminal through the control channels. The control channel may also be called a service control channel L1/L2, the associated control channel or a physical downlink control channel (PDCCH, a physical downlink control channel). The control channel is also used for messages modulation scheme (such as QPSK, 16 QAM or 64 QAM) and information channel coding (e.g., speed channel coding)used in scheduled blocks of resources, as well as information about the treats hybrid automatic repeat request (HARQ, hybrid automatic repeat request). The structure of the control channels used in the mobile communication system, see, for example, 3GPP, TR25.848, "Physical layer aspects of UTRA High Speed Downlink Packet Access", and 3GPP, TR25.896, "Feasibility study of enhanced uplink for UTRA FDD".

Here, when the control channel permanently assigned to the resource block common to all terminals, some terminals may not take control channel with good quality, because the States of the channels in the block resource between terminals differ. Meanwhile, the allocation control channel to all resource blocks makes possible the reception of the control channel with a certain quality of reception for all terminals. However, with this method it is difficult to improve the reception quality in addition. For these reasons, a need exists for a method of transmitting control channel terminals with high quality.

In the system, which uses adaptive modulation and coding (AMC adaptive modulation and coding), that is, when the modulation scheme and the rate adaptive channel coding change, the number of symbols used for transmission of the control channel, depending on the terminal changes. This is for the reason that the amount of information transmitted in each symbol varies depending on the combination of the modulation scheme and the speed channel coding. In relation to next generation systems that is also discussed sending and receiving various signals from multiple antennas, provided on the transmitting and receiving ends. In this case, for each of the signals transmitted by multiple antennas, it may be necessary control information, such as information management, as described above. In other words, in such a system, the number of symbols required to transmit the control channel may vary depending on terminal and may also depend on the number of antennas used by the terminal. When the amount of information transmitted through the control channel, varies from terminal to increase the efficient use of resources you must use a variable format that can flexibly to contain different amounts of information management. However, the use of variable format may increase the load on the signal processing on the transmitting and receiving ends. Meanwhile, when you use a fixed format, it is necessary to provide a dedicated space of the control channels that can accommodate the maximum number of information management. In this case, even if the control channel occupies only part of the space of the control channels, the resources remaining space of the control channels may not be used for data transmission, and, as a result, efficient use of resources is reduced. For these reasons, the merits of the t need in the way of control channel simple and highly effective manner.

However, the modes of transmission of the control channel available in the prior art, still can not meet the above requirements.

Disclosure of inventions

The present invention is the effective transfer of control channels to the communication terminal in the communication system, when the frequency band assigned to the communication system includes multiple resource blocks, each of which contains one or more subcarriers, and each communication terminal communicates using one or more resource blocks.

In one aspect of the present invention proposes a base station used in a mobile communication system, applying for downlink OFDM. The base station includes a planning module, configured to determine the radio resource assignment for each podagra so that each user device for communication is assigned one or more resource blocks; a module forming the control channel, configured to generate a control channel containing General information management of distributed resources in a radio communications distributed in the frequency band of the system, and a dedicated information management, distributed in one or more resource blocks assigned to each selected user device; modulefilename signal transmission, made with the possibility of signal transmission by multiplexing time division General control information and dedicated control information in accordance with information planning from the planning module. General control information includes an indicator of the format, reflecting one of the preset options that indicates the number of symbols occupied by the common management information in one potcake. Common management information includes information elements with a predefined data size. The number of information elements is less than or equal to a specific value set.

Another aspect of the present invention makes it possible to effectively transmit the control channels to the communication terminal in the communication system, when the frequency band assigned to the communication system includes multiple resource blocks, each of which contains one or more subcarriers, and each communication terminal communicates using one or more resource blocks.

Brief description of drawings

Figure 1 shows a drawing used to describe the planning of frequency;

Figure 2 shows a drawing illustrating the frequency band used in the embodiment of the present invention;

On figa shows a partial block diagram (1) base station in the accordance with the embodiment of the present invention;

On FIGU shows a partial block diagram (2) of a base station in accordance with the embodiment of the present invention;

On figa shown the drawing, the components of signal processing for a single frequency block;

On FIGU shown the drawing, the components of signal processing for a single frequency block;

On figa presents a table showing exemplary items of information official control channels;

On FIGU shows a drawing illustrating localized and distributed FDM FDM;

On figs presents a drawing showing the number of symbols of the control channel L1/L2, which varies in accordance with the number multiplexing users;

On fig.5D shows a drawing illustrating an exemplary distribution of the part 0 information and call light;

On five shows a drawing illustrating the element information used for ring indicator;

On fig.5F shows a drawing illustrating a case when the vectors WA and WB pre-coding are defined so that two of the four streams routed to the user device A (UEA), and the other two of the four streams routed to the user device (UEB);

Figure 6 shows a drawing illustrating the element code with bug fixes;

On figa shows a drawing illustrating an exemplary distribution is of data channels and control channels;

On FIGU shows a drawing illustrating an exemplary distribution of data channels and control channels;

On figs shows a drawing illustrating an exemplary format of the control channel L1/L2 in the case when the number of symbols of the control channel L1/L2 reported using part 0;

On fig.7D shows a drawing illustrating an exemplary format of the control channel L1/L2 in the case when the number of multiplexed users is reported for each MCS using part 0;

On five shows a drawing illustrating an exemplary distribution of a part 0 the control channel L1/L2 in a three-sector configuration;

On fig.7F shows a drawing illustrating an exemplary circuit multiplexing for shared control channels;

On fig.7G shows a drawing illustrating an exemplary distribution of the total information management for users, non-users at the cell border;

On fign shows a drawing illustrating an exemplary distribution of the total information management for users, including users at the cell border;

On Fig shows a drawing illustrating an exemplary method of multiplexing the common control channels in the case where multiplexed multiple users;

On figa shows a partial block diagram of the terminal according to the embodiment of the present is subramania;

On FIGU shows a partial block diagram of the terminal according to the embodiment of the present invention;

On figs shows a diagram illustrating the receiving terminal module;

On figa presents a block diagram showing an exemplary process in accordance with the embodiment of the present invention;

On FIGU presents a block diagram showing an exemplary process of parallel reception;

On figs presents a block diagram showing an exemplary process consistent admission;

On figa shown drawing (1)illustrating an encoding error detection common control channels;

On FIGU shows a drawing (2)illustrating an encoding error detection common control channels;

On figs shown drawing (3)illustrating an encoding error detection common control channels;

Figure 11 shows a drawing illustrating an example of control (TRS, transmission power control) transmit power;

On Fig shows a drawing illustrating an example of adaptive modulation and coding (AMC);

On Fig shows a drawing illustrating the relationship between the MCS levels and dimensions of data;

On figa shows a drawing illustrating the transmission of control channels L1/L2 in four TTI with different value sets;

On FIGU presents a table that shows the nd approximate values of the parameters, related to the magnitude of the multitude;

On Fig shows a drawing illustrating the predefined relative position distribution information management;

On Fig shows a drawing used to describe the case when the number of steps of the blind detection of the reduced data;

On Fig shows a table comparing the ways 1-7;

On Fig shown drawing (1)illustrating an example in which the portion of the control signal is encoded using the same channel coding scheme for all users, and another part of the control signal is encoded using different channel coding schemes for the respective users;

On figa shown drawing (1)illustrating an example in which the portion of the control signal is encoded using the same channel coding scheme for all users, and another part of the control signal is encoded using different channel coding schemes for the respective users;

On FIGU shows a drawing used to describe ways of decoding grants top-down planning;

On Fig shows a drawing used to describe the case when the channel coding scheme for the control signal varies from user to user;

On Fig shows the comparison table from the first to the third is the second way;

On Fig presents a table showing the approximate dimensions of the data of the respective items of information;

On Fig shows a table comparing the first to the third way;

The list of designations

31 management Module assigning a frequency block

32 the planning Module frequency

33 Module forming a service control channel for frequency block x

34 Module channel formation data for frequency block x

35 Module forming a broadcast channel (or call channel)

1-x the First multiplexing module for frequency block x

37 the Second multiplexing module

38 the Third module multiplexing

39 Module form other channels

40 Module inverse fast Fourier transform

41 adding cyclic prefix

41 Module forming a common control channel

42 Module forming a dedicated control channel

43 Module multiplexing

81 Module settings carrier frequency

82 the filtering Module

83 Module remove cyclic prefix

84 Module fast Fourier transform (FFT)

85 measurement Module CQI

86 Module decoding the broadcast channel

87-0 Module decoding the common control channel (part 0)

87 Module decoding the shared channel control the Oia

88 Module decoding the selected channel management

89 Module decoding the channel data

The implementation of the invention

In accordance with the embodiment of the present invention, the control channel is divided by the total information management (information management for all), the decoded essentially all of the communication terminal, and a dedicated management information, the decoded specific communication terminals, which are assigned one or more resource blocks, and General information management and the dedicated control information is encoded and modulated separately. The control channel is formed by multiplexing time division General control information and dedicated control information in accordance with the information planning and transmitted using the scheme with many carriers. This method enables efficient transmission of the control channel using a fixed format without waste of resources, even when the amount of control information is changed from one communication terminal to another communication terminal.

General information the control can be distributed in such a way as to be distributed throughout the frequency band of the system, and the dedicated control information for an individual terminal may be distributed only in blocks of the Republic of row, assigned to a specific communication terminal. In this case, the selected control information is allocated in blocks of resources that provide good status of channels for the particular telecommunications terminal. Thus, this method makes it possible to improve the quality of the selected information management while achieving a certain level of quality of the overall information management for all users.

The downward control channel may be allocated to be distributed in many resource blocks assigned to the set terminal connection. The distribution of the pilot channel in a wide frequency band, for example, makes it possible to improve the accuracy of channel estimation.

In accordance with the embodiment of the present invention to maintain or improve the quality of the control channels containing the shared control channel and a dedicated control channel for the shared control channel controls the transmit power, and for the dedicated control channel is one or both of the power transmission and adaptive modulation and coding.

Controlling transmit power may be exercised for the common control channel to improve reception quality of the common control channel in a particular telecommunications terminal, to the which the assigned resource blocks. Although to demodulate the shared control channel try all users or the communication terminal, receiving a common control channel, it will be enough if the common control channel will be able to successfully demodulate the users assigned resource blocks.

The common control channel may contain information about the modulation scheme and/or coding scheme used in a dedicated control channel. Because the combination of modulation scheme and coding scheme for the shared control channel is fixed (or, at least, is selected from a limited number of combinations), this method gives users assigned resource blocks, the possibility of obtaining information about the modulation scheme and the coding scheme for the dedicated control channel by demodulating the shared control channel. In other words, this method makes possible the implementation of adaptive modulation and coding in a dedicated control channel the control channel and thereby improving the reception quality of a dedicated control channel.

When channel management is the management of power transmission and adaptive modulation and coding, the total number of combinations of modulation and coding schemes for the dedicated control channel may be smaller than the total number of combinations of modulation and coding schemes for General Kang the La data (physical downstream shared channel PDSCH, physical downlink shared channel). This is due to the fact that even if the required quality of the selected channel is not achieved with solely the adaptive modulation and coding, the problem does not exist until such time as the required quality can be achieved more exercise control of the transmit power.

The first option exercise

Figure 2 shows a drawing illustrating the frequency band used in the embodiment of the present invention. The values used in the following description are merely examples, and may use different values. In this example, the frequency band (all band transmit frequencies), the selected communication system, has a width of 20 MHz. The whole bandwidth of the transmission contains four frequency block 1-4. Each of the frequency blocks includes multiple resource blocks, each of which has one or more subcarriers. Figure 2 schematically illustrates the frequency blocks, each of which contains a number of subcarriers. In this embodiment, it is believed that identifies four different widths of the bands due in 5 MHz, 10 MHz, 15 MHz and 20 MHz. User device (e.g., communication terminal, mobile terminal, or fixed terminal) communicates using one or more frequency blocks with one of four widths of the bands cha is the one. The communication terminal in the communication system can support all four of the width of the frequency bands or to support only part of the four widths of the bands. However, each communication terminal supports at least the bandwidth of 5 MHz. Alternatively, the width of the frequency bands of communication can be defined, and each communication terminal may be configured to communicate using the whole bandwidth of the system. Although in this embodiment, for descriptive purposes identified four of the width of the frequency bands of communication, the present invention can also be applied in the case when the width of the frequency bands of communication is not defined.

In this embodiment, the control channel (service control channel L1/L2 or the control channel of the lower level) for communication planning data channels (shared data channel) terminals is transmitted using the minimum bandwidth (5 MHz) and is provided for each frequency block. For example, when a terminal that supports a bandwidth of 5 MHz, communicates using a frequency block 1, the terminal receives the control channel provided for the frequency block 1, and thereby receives scheduling information. Information indicating which terminal is which frequency block may be used, may be communicated to term the channels in advance for example, using a broadcast channel. Also the frequency blocks used by the terminal may be changed after the start of communication. When a terminal that supports a bandwidth of 10 MHz, communicates using adjacent frequency blocks 1 and 2, the terminal receives the control channels provided for frequency blocks 1 and 2, and thereby receives scheduling information for a bandwidth of 10 MHz. When a terminal that supports a bandwidth of 15 MHz, communicates using adjacent frequency blocks 1, 2 and 3, the terminal receives the control channels provided for frequency blocks 1, 2 and 3, and thereby receives scheduling information for a bandwidth of 15 MHz. When a terminal that supports a bandwidth of 20 MHz, communicates, the terminal receives all the control channels provided for frequency blocks, and thereby receives scheduling information for a bandwidth of 20 MHz. In figure 2 each frequency block shows four discrete block labeled "control channel". This indicates that the control channel is allocated (is) in many resource blocks in the frequency block. Distribution channel management is described in detail below.

On figa shows a partial block diagram of a base station in accordance with your actual is accordance with the embodiment of the present invention. The base station shown in figa contains a module 31 controls the frequency assignment unit, the module 32 planning frequency module 33-1 formation service control channel and module 34-1 formation of the channel data for the frequency block 1, ..., module 33 forming a service control channel and the module 34-M channel formation data for frequency block M, the module 35 forming a broadcast channel (or call channel), the first module 1-1 multiplexing for frequency block 1, ..., the first module 1-M for frequency multiplexing unit M, the second module 37 multiplexing, the third module 38 multiplexing module 39 the formation of other channels, the module 40 inverse fast Fourier transform (OBPF) and module 41 adding a cyclic prefix (CP cyclic prefix).

Module 31 controls the frequency assignment unit determines the frequency block (blocks)used by the terminal (mobile terminal or fixed terminal), on the basis of information relating to the maximum supported bandwidth reported by the terminal. Module 31 controls the frequency assignment unit manages the correspondence between the respective terminals and the frequency blocks and sends the information matching module 32 planning on frequency. The correspondence between frequency blocks and terminals, supports various-width frequency bands, may be communicated to the terminal in advance through a broadcast channel. For example, the module 31 controls the frequency assignment unit allows users that communicates with a bandwidth of 5 MHz, to use any or a specific block of frequency blocks 1-4. For the user, communicates with a bandwidth of 10 MHz, the module 31 controls the frequency assignment unit allows the use of two adjacent frequency block, i.e. the frequency blocks "1 and 2", "2 and 3" or "3 and 4". Module 31 controls the frequency assignment unit may allow the user to use any or a specific combination. For the user, communicates with a bandwidth of 15 MHz, the module 31 controls the frequency assignment unit allows the use of three adjacent frequency block, i.e. the frequency blocks "1, 2, and 3" or "2, 3 and 4". Module 31 controls the frequency assignment unit may allow the user to use one or both hands. For the user, communicates with the bandwidth of 20 MHz, the module 31 controls the frequency assignment unit allows the use of all frequency blocks. Frequency blocks, allow the user to use can be changed after the start of communication in accordance with the template pereskoka the frequency.

Module 32 planning frequency planning frequency for each of the frequency blocks. Module 32 planning frequency planning frequency for each frequency block based on the indicator of channel quality (CQI)reported by the terminals for the respective resource blocks, so that the resource blocks are assigned mainly to the terminals with good channel state, and generates scheduling information based on the results of planning.

Module 33-1 formation service control channel frequency for unit 1 generates a service control channel for communication planning frequency block 1 terminal using the resource blocks only in the frequency block 1. Similarly, each of the modules 33 forming a service control channel for other frequency blocks is generated by the service control channel message schedule information corresponding frequency block to the terminal using the resource blocks only in this frequency block.

Module 34-1 formation of the channel data for the frequency block 1 generates the data channels, each of which is transmitted using one or more resource blocks in the frequency block 1. The frequency block 1 can be used in conjunction with one or more terminals (users). SL is therefore in this example, the module 34-1 formation of the channel data for the frequency block 1 contains N modules 1-1 to 1-N channel formation data. Similarly, each of the modules 34 channel formation data for other frequency blocks forming the data terminals that share the corresponding frequency block.

The first module 1-1 multiplexing for frequency block 1 multiplexes the signals transmitted using the frequency block 1. This multiplexing includes at least a-division multiplexing frequency. The service multiplexing the control channel and data channels hereinafter described in more detail. Similarly, each of the first modules 1 multiplexing for other frequency blocks service multiplexes the control channel and data channels transmitted using the corresponding frequency block.

The second module 37 multiplexing changes in the ratio of provisions of the first modules 1-x (x=1, ..., M) multiplexing on-axis frequency in accordance with the template leaps in frequency. This process is described in detail in the second embodiment.

Module 35 forming a broadcast channel (or call channel) generates broadcast information such as the service data that must be communicated to mention the Alam, covered by the base station. The broadcast information may include information indicating the correspondence between the maximum supported by the widths of the bands of the terminal and used frequency blocks. If the used frequency blocks are changed, the broadcast information may also contain information that identifies the template leaps, showing how the change of the used frequency blocks. The call channel can be transmitted using the same bandwidth that is used for the broadcast channel, or using the frequency blocks used by the corresponding terminal.

Module 39 the formation of other channels forms a channel that is different from the service control channel and data channels. For example, the module 39 the formation of other channels generates a pilot channel.

The third module 38 multiplexing multiplexes service control channels and data channels in all frequency blocks, a broadcast channel and/or other channels if necessary.

Module 40 inverse fast Fourier transform performs inverse fast Fourier transform on the signal output from the third module 38 multiplexing, and thereby modulates the signal according to OFDM.

Module 41 adding a cyclic prefix (CP) forms Simuliidae by attaching protective intervals to the modulated OFDM symbols. Character transfer is formed, for example, by duplicating data is finished (or header) modulated OFDM symbol and attaching duplicated data to the end (or title) modulated OFDM symbol.

On FIGU shows the components that follow the module 41 add CP, shown in figa. As shown in figv, chain RF transmission performs d / a conversion, the conversion frequency and limiting the bandwidth of the symbol with a protective intervals, and the amplifier amplifies the symbols to an appropriate power level. Then the symbol is passed through duplexer transceiver and the antenna.

In this embodiment, it is considered that the base station performs reception with antenna diversity using two antennas, although this characteristic is not essential for the present invention. The upward signal received by the two antennas, is introduced into the receiving module of the rising signal.

On figa shows a drawing illustrating components of the signal processing for one frequency block (the frequency block x). On figa "x" denotes an integer greater than or equal to 1 and less than or equal to M Components of the signal processing for frequency block x contains the module 33 forming a service channel management module 34 of the channel formation data, modules, 43-A, 4-B, ... multiplexing and module 1-x of the multiplexing. Module 33 forming a service control channel contains the module 41 of forming a common control channel and one or more modules 42-A, 42-B, ... the formation of a dedicated control channel.

Module 41 of forming a common control channel performs channel coding and multilevel modulation in the common control channel (also called total information management or information management for all), which is part of the official control channel and is decoded and demodulated by all terminals using the corresponding frequency block, and displays the common control channel.

Each of the modules 42 of the formation of a dedicated control channel performs channel coding and multilevel modulation in a dedicated control channel (also called a dedicated information management), which is part of the official control channel and is decoded and demodulated by the terminal has been assigned one or more resource blocks in the corresponding frequency block, and outputs the selected control channel.

Module 34 formation of the channel data contains modules x, x, ... the formation of the channel data, which respectively perform channel coding and multilevel modulation data channel t is renalof And, In, ... Information related to channel coding and multilevel modulation, is enclosed in a dedicated control channel described above.

Modules 43 multiplexing allocate a dedicated control channels and data channels of the respective terminals in the resource blocks assigned to the terminal.

As described above, the module 41 of forming a common control channel encodes (and modulates) the General control channel and the modules 42 of the formation of a dedicated control channel encode (and modulate) the respective dedicated control channels. Accordingly, as schematically shown in Fig.6, a common control channel this option, the implementation contains a set of information for all users who are assigned frequency block x, and the sets of information are collectively encoded code with bug fixes.

Alternative common control channel may be encoded code with error correction for each user. In this case, the user cannot uniquely identify the block in the blocks of encoded code with error correction, which contains user information. Therefore, the user must decode all blocks. With this method, since the encoding is done for each user, is relatively easy to add or replacement of the th user. Each user must decode and demodulate the shared control channel containing sets of information for all users.

Meanwhile, a dedicated control channels contain information only for those users who actually assigned resource blocks, and, therefore, coded code error correction for the respective users. Each user determines whether the block (blocks) resources, by decoding and demodulation of the common control channel. Accordingly, only those users assigned resource blocks, must decode the dedicated control channels. Speed channel coding and modulation schemes for selected control channels within a communication session, if necessary, changed. On the other hand, the speed channel coding and modulation scheme for the shared control channel may be fixed. However, however, it is preferable to control (TRS, transmission power control) the transmit power to achieve a certain level of signal quality. Thus, the encoded code with error correction dedicated control channels are transmitted using resource blocks that provide good channel state. Therefore, the amount of downstream data may be to some extent reduced p is proregime. On figa shows the types downlink service channel management and exemplary items of information corresponding downlink service channel management. Top-down service control channels include a broadcast channel (VSN, broadcast channel), a dedicated service channel L3 (channel top-level management or control channel high level) and the control channel L1/L2 (the control channel of the lower level). The control channel L1/L2 in addition to the information for descending data may contain information for an upstream data transmission. The control channel L1/L2 may contain transmission format (e.g., modulation scheme, data rate channel coding and the number of multiplexed users) control channel L1/L2. Information elements are passed to the respective channels, are described below.

(Broadcast channel)

The broadcast channel is used for communication to the telecommunications terminal (or mobile terminals or fixed terminals; may be referred to as user devices) information that is unique to the cell, or information that changes only after long intervals. As the broadcast information may be communicated, for example, information that varies only with an interval of 1000 MS (1 sec). Broadcast information the FL may also contain the format of the transmission of the downward control channel L1/L2, the maximum number of multiplexed users, configuration information blocks resources and information MIMO schemes. The maximum number of multiplexed users indicates the number of users whose management information multiplexed in the downlink control channel L1/L2 in one potcake. The maximum number of multiplexed users can be defined for uplink communication and downlink separately (NUmaxand NDmax) or may reflect the total number of multiplexed users for uplink communication and downlink (Nall).

The transmission format is determined by the modulation scheme and data rate channel coding. Because the rate of channel coding can be uniquely determined based on the modulation scheme and data size of the data, instead of the speed channel coding may be communicated to the size of the data. Alternatively, the transmission format may be communicated as part (part 0) control channel L1/L2, as described below.

The maximum number of multiplexed users indicates the number of users that can be multiplexed in one TTI using one or more of the FDM, CDM and TDM. For uplink communication and downlink can be defined the same maximum number of multiple Tserovani users or for uplink communication and downlink can be defined different numbers.

The configuration information of the resource block indicates the position of a resource block used in a cell on frequency and time axes. In this embodiment, there are two types of schemes division multiplexing frequency (FDM, frequency division multiplexing): a localized and distributed FDM FDM. In the localized FDM each user with a good channel state, preferably assigned to contiguous frequency bands, locally concentrated on the axis of frequency. Localized FDM suitable, for example, to link users with low mobility and high-quality, high-speed data transmission. In the distributed FDM downward signal is generated so that it contains a lot of intermittent frequency components distributed along a broad band of frequencies. Distributed FDM is suitable, for example, to link users with high mobility and for periodic data transfer small size, such as voice packets (VoIP, Voice over IP, voice over IP networks). Thus, the frequency resources are allocated as a continuous band or discrete frequency components for each user in accordance with the destination information on the basis of any of the FDM schemes.

The top paragraph is Lovina figv illustrates an example of a localized FDM. In this example, when the resource identified by local resource blocks number "4", it corresponds to the physical block of 4 resources. On the bottom half figv illustrates a distributed FDM. In this example, when the resource identified by the distributed resource blocks number "4", it corresponds to the left half of the physical blocks 2 and 8 resources. In the lower half figv each physical resource block is divided into two. However, the numbering and the number of divisions of the blocks of resources in the distributed FDM can vary from cell to cell. For this reason, the configuration information resource blocks is communicated via the broadcast channel to the communication terminal in each cell.

Information of MIMO schemes reported in the case, if the base station is equipped with multiple antennas, and indicates whether a single-user multiple input multiple output (SU-MIMO, single-user multi-input multi-output) or multi-user (MU-MIMO, multi-user MIMO). When SU-MIMO base station with multiple antennas communicates with one terminal communications with multiple antennas. Meanwhile, when MU-MIMO base station with multiple antennas communicates with multiple terminal connection.

When descending MU-MIMO signal to the user device UEAtransmitted from one or multiple antennas (for example, the first antenna of the two antennas) of a base station, the signal to another user device UE Btransmitted from one or multiple antennas (for example, a second antenna of the two antennas) of a base station. When the uplink MU-MIMO signal from the user device UEAand the signal from the other user device UEBtaken at the same time, many base station antennas. Signals from multiple user devices differ, for example, by the control signals assigned to the respective user devices. As the reference signals are preferably used sequence CAZAC codes. Sequence CAZAC codes become orthogonal to each other, even if they are formed from the same sequence, until used different values of cyclic shifts. Therefore, the orthogonal sequences can be easily generated using sequence CAZAC codes.

(The selected service channel L3)

Selected service channel L3 is also used for messages to the terminal connection information, which changes at long intervals, for example at an interval of 1000 MS. While the broadcast channel is transmitted to all communication terminals in a cell, the selected service channel L3 is transmitted only to a specific communication terminal. Selected service channel L3 contains information about the type of FDM and inform the tion constant planning. Selected service channel L3 can be classified as dedicated control channel.

Type FDM indicates that for each of the selected communication terminal is either localized FDM or distributed FDM.

Information permanent planning reported when is the permanent plan, and specifies the transmission formats (modulation scheme and data rate channel coding) ascending or descending data channels and used blocks of resources.

(The control channel L1/L2)

The control channel L1/L2 may contain information for an upstream data transmission in addition to information for descending data. The control channel L1/L2 may further comprise data bits (part 0)indicating the transmission format of the control channel L1/L2. Information for top-down data can be classified into part 1, part 2A and part 2b. Part 1 and part 2A are classified as the common control channels, part 2b can be classified as dedicated information management.

(Part 0)

Information part 0 (hereinafter referred to simply as "part 0") provides transfer format (modulation scheme, the rate of channel coding and the number multiplexing users or the total number of bits of control) control channel L1/L2. If the transmission format of the control channel is L1/L2 reported a broadcast channel, part 0 contains the number multiplexing users (or the total number of bits of control).

The number of characters required for the control channel L1/L2 varies depending on the part multiplexing users and the reception quality multiplexing users. Typically, as shown on the left side pigs, for the control channel L1/L2 reserved a sufficiently large number of characters. The number of characters may vary and are reported by the transmission format of the control channel L1/L2, which is communicated via a broadcast channel, for example, with an interval of 1000 MS (1 sec). When the number multiplexing users is small, the number of characters required for the control channel L1/L2 becomes smaller, as shown on the right side figs. Here, if the control channel L1/L2 in an environment where the number multiplexing users and the reception quality multiplexing users changes over short intervals, continues to reserved a large number of resources, most of the resources can be wasted in vain.

To reduce waste of resources for the control channel L1/L2, part 0 (the modulation scheme, the rate of channel coding and the number multiplexing users or the total number of bits of control) can be contained in the control channel L1/L2. The message about the modulation scheme and the speed channel to which tiravanija with part 0 of the control channel L1/L2 makes it possible to change the modulation scheme and the speed channel coding for a shorter time interval as compared with the case when they are communicated to the broadcast channel. When the number of symbols occupied by the control channel L1/L2 in one potcake is selected from the predefined values, the transfer format in one potcake can be identified by determining which of the options is selected. For example, when provided, as described hereinafter, four types of transmission formats, the information of the part 0 may be represented by two bits.

(Part 1)

Part 1 contains the ring indicator (PI, paging indicator). Each communication terminal can determine whether it is being called by demodulation ring indicator. More specifically, each communication terminal determines whether the indicator group call number assigned to the communication terminal, and demodulates the channel (RSN, paging channel) call, if the group number is present. The relative pose between PI and DCL for the communication terminal is known. Then, the communication terminal determines whether its identifying information (e.g. phone number of the communication terminal) in DCL, and thereby determines whether there is an incoming call.

PI can be transmitted (1) using parts of the control channel L1/L2, which are allocated to PI, or (2) using unselected items of information in the control channel L1/L2.

On fig.5D shows the case when the call light is transmitted in accordance with the method (1). In this example, the CSP is sandom on fig.5D, one podcat includes a preset number (for example, 10) continuous time OFDM symbols, and the first three characters are assigned to the common control information. Information part 0 and the call light is distributed in the frequency bands around the Central frequency of the bandwidth of the system in accordance with the distributed FDM. For other parts of the first three characters of the management information of the descending line (DL, downlink) communication and information management uplink (UL uplink) communication is distributed in accordance with the distributed FDM. Call channel (RSN) is multiplexity split time with the above-mentioned management information. In this method, the allocated frequency bands for ring indicator is available with a regular or irregular interval.

When the method (2) control channel L1/L2 contains a lot of information elements predefined size. The number of items of information is limited to the maximum number specified in the broadcast information. Each of the items of information usually contains the management information for the selected user device, such as information (UE-ID, user identification information) identifying the user and information resource assignments. In this method for ring indicator assigned to one or more information elements with regular or deregu the popular intervals. In other words, the call light is transmitted without the use of allocated resources. In this case, however, it is necessary to divide the information element that contains the call light, from the other information elements containing the management information for user devices. For this purpose, for example, can be used information (PI-ID, paging indicator identification information) identifying unique to the call light. In this case, PI-ID is reported to the user device, for example, by using the broadcast information.

The corresponding information elements can have the same number of bits or a different number of bits. For example, when the MCS is variable and is determined for each user in the common control information, as described later (when the MCS for the control channel L1/L2 is adjusted for each user), the number of bits of the item of information may vary depending on the MCS level.

On file shows the case when the information elements are assigned to the call light at regular or irregular intervals. When a user device decodes the information element and defines PI-ID, user device processes the information element as an indicator of the calling user device determines whether the information element group ID, nae is obtained for the and checks DCL, if PI group-ID is present). Call indicator is preferably contained in the first item of information, so that the user device can quickly determine whether there is for them an incoming call.

(Part 2A)

Part 2A contains information assignment resources for downlink data assigned duration of time and the MIMO information.

Information resource assignment for downlink data determines resource blocks containing the downlinks data. To identify resource blocks can be used in various ways, such as the scheme of bit allocation and tree numerical scheme known in the relevant field of technology.

Assigned duration time specifies the period of time in which the downlinks data are transmitted continuously. The resource assignment may change as often as every TTI. However, to reduce the loss of data channels can be transmitted in accordance with the same purpose of a resource for a variety of TTI.

Information MIMO reported when the connection uses the MIMO scheme, and indicates, for example, the number of antennas and the number of threads. The number of threads may also be referred to as the number of information sequences. In the further description it is believed that as the number of antennas and the number of threads equal to four is". However, the number of antennas and the number of threads can be set to any appropriate value.

Although this is not essential, part 2A may also contain all or part of the information 16-bit user ID.

(Part 2b)

Part 2b contains information of a preliminary coding scheme for MIMO transmission format of the descending channel data, information, hybrid automatic request (HARQ, hybrid automatic repeat request) repeat and the CRC information.

Information preliminary coding scheme for MIMO specifies the weighting coefficients applied to the respective antennas. The directivity of the communication signals can be adjusted by adjusting the weighing factors (vectors pre-coding), applied to the respective antennas. At the receiving end (user terminal) estimation of the channel preferably is carried out in accordance with directional characteristics.

On fig.5F shows a drawing illustrating a case when the vector WAand WBpre-coding is determined so that the threads 1 and 2 (code word 1) of the four flows were directed to a user device A (UEA), and the threads 3 and 4 (code word 2) of the four flows were directed to a user device (UEB). The reference signal is transmitted Omni is a diversified way. The vectors WAand WBpreliminary coding are communicated to the appropriate user devices a and B. the User device And receives the reference signal with regard to the weighing coefficient specified by the vector WApreliminary coding, or applies the weighting coefficient to a reference signal after his admission. This configuration allows a user's device And properly assess channel signal directed to him. Similarly, the user device receives the reference signal with regard to the weighing coefficient specified by the vector WBpreliminary coding, or applies the weighting coefficient to a reference signal after his admission. This configuration enables the user device To appropriately assess channel signal directed to him.

The transfer format of the descending channel data is determined by the modulation scheme and data rate channel coding. Because the rate of channel coding can be uniquely determined based on the modulation scheme and data size instead of speed channel coding may be communicated to the size of the data or the size of the payload. For example, the transmission format may be made the len 8 bits.

Information, hybrid automatic request (HARQ) repeat contains the information necessary to control the re-transmission of downlink packets. More specifically, the information contains the number of the HARQ process information, redundancy option that specifies the schema of a combination of packages, and a new data indicator indicating whether the package is a new package or re-transmitted packet. For example, HARQ information may be represented by 6 bits.

Information CRC (cyclic redundancy check) is reported when to detect errors use a circular ispytatelnyi control and indicates the bits of the CRC definition, rolled with information identifying the user (UE-ID).

Information for transmitting upstream data can be classified into part 1 - part 4. Mainly information for the transmission of upstream data is classified as a common control channel. However, for a communication terminal assigned resources for downlink data information for transmission of the upstream data can be transmitted as a dedicated control channels.

(Part 1)

Part 1 contains information delivery confirmation for the previous upstream data channels. Information delivery confirmation indicates either an acknowledgement (ACK, acknowledge), indicating that errors in the package is not defined or defined error and are in an acceptable range, or a negative acknowledgement (NACK, negative acknowledge)indicating that the package defines the error outside the allowable range. Information delivery confirmation may be represented by one bit.

(Part 2)

Part 2 contains information assignment resources for the future upward channel data format and transmission information of the transmission power and the CRC information for the bullish channel data.

Information assignment resource specifies the resource blocks that can be used to transmit upstream data channel. To identify resource blocks can be used in various ways, such as the scheme of bit allocation and tree numerical scheme known in the relevant field of technology.

The transfer format of the upward channel data is determined to modulation scheme and data rate channel coding. Because the rate of channel coding can be uniquely determined based on the modulation scheme and data size of the data, instead of the speed channel coding may be communicated to the size of the data or the size of the payload. For example, the transmission format may be represented by 8 bits.

Information transmit power indicates the power level that you want to use for the transmission of upstream data channel. According to a variant implementation is tvline of the present invention uplink pilot channel is repeatedly transmitted from each communication terminal to the base station with a relatively short interval Tref, for example, about several milliseconds. The level of Pref power transmission of the rising of the pilot channel is updated with an interval TTRSthat the longer the interval Tref, based on the control information transmit power (TRS) from the base station so that the level of Pref power transmission becomes greater or less than the power level previously transferred to the rising of the pilot channel. The upward control channel L1/L2 is transmitted with the power level obtained by adding a level ΔL1L2the power of the first shift, reported to the base station for the level of Pref power transmission of the rising of the pilot channel. The uplink data is transmitted with the power level obtained by adding a level Δdatacapacity of the second shift, reported to the base station for the level of Pref power transmission of the rising of the pilot channel. Level ΔL1L2the power of the first shift for the control channel L1/L2 is contained in the information of the power transmission part 4, described next. Team TRS to update the power level of the pilot channel is also contained in part 4.

Level ΔL1L2the power of the first shift may be a fixed value or a variable. When ΔL1L2the power of the first shift is variable, it can be reported polzovateley the mu device as broadcast information (VSN) or service-level information 3. Level Δdatacapacity of the second shift may be communicated to the user device using a control signal L1/L2. Level aL1L2the power of the first shift may be may be increased or decreased in accordance with the amount of information in the control signal. Level ΔL1L2the power of the first shift can also be determined in accordance with the reception quality of the control signal. Level Δdatacapacity of the second shift may be determined in accordance with the reception quality of the signal data. The uplink data can be transmitted with a power level that is less than the sum of the level of Pref power transmission of the rising of the pilot channel and level Δdatacapacity of the second shift to meet demand (overload indicator) to reduce power consumption, which is sent to the communication terminal of the cell is about serving cell.

Information CRC reported when to detect errors use a circular ispytatelnyi control and indicates the bits of the CRC definition, rolled with information identifying the user (UE-ID). In response to the signal (top-down control channel L1/L2) on the random access channel (RACH random access channel) as a UE-ID can be used a random ID of the RACH preamble.

(Part 3)

Part 3 contains control bits time is peredachi for upstream signals. Bits control the transmission time is used to synchronize the communication terminal in the cell. Bits control the time of transmission can be provided as a dedicated information management, when resource blocks are assigned downstream data channel, or may be reported as total information control.

(Part 4)

Part 4 contains information of transmission power indicating a power level of the communication terminal. In particular, information of the transmission power indicates the power level that should be used by the communication terminal, to which no resources are assigned for the transmission of upstream data channel for transmission of the upward control channel for messages downward CQI. In part 4 contains the level ΔL1L2the power of the first shift and command TRS described above.

On FIGU like Figo, shows the components of the signal processing for one frequency block. Figa differs from figv that provided an example of the information management. On figv for components corresponding to those on figa, uses the same number designations. "The distribution of assigned resource blocks" on FIGU means that the channels are distributed in one or more resource blocks assigned to the selected communication terminal. "The distribution of other resource blocks" means that channels the soap is in process identifies the resource blocks in the entire frequency block. Part 0 in the control channel L1/L2 is transmitted as a common control channel using a frequency block. Information related to the upward data transmission (parts 1-4) in the control channel L1/L2 is transmitted as a dedicated control channel using the resources assigned to the channel downstream data, if possible, or as a common control channel using a frequency block, if to a downstream data channel resources are not assigned.

On figa shows a drawing illustrating an exemplary distribution of data channels and control channels. This example shows the distribution in one frequency block and one potcake and roughly corresponds to the output of the first module 1-x multiplexing (except that channels such as the pilot channel are multiplexed by the third module 38 multiplexing). One podcat may correspond to a single interval (TTI, transmission time interval) transmission time or multiple TTI. In this example, the frequency block contains seven resource blocks RB1-RB7. Seven resource blocks are assigned to the terminals with good channel status module 32 planning in terms of frequency, shown in figa.

Usually a shared control channel, the pilot channel and the data channels are multiplexed in time. Common control channel (containing the part 0 in the control channel L1/L2) races shall be determined in resources, distributed over the entire frequency block. In other words, the common control channel is allocated in the frequency band, composed of seven blocks of resources. On figa common control channel (containing the part 0 in the control channel L1/L2) and other control channels (except the dedicated control channels) are multiplexed by frequency division. Other control channels may include a sync channel (this channel allocation is immaterial to the present invention, and the sync channel can be contained in the common control channel). Part 0 in the control channel L1/L2 preferably is allocated in the first OFDM symbol to reduce the time delay. In the example shown in figa, a common control channel and other channels are multiplexed by frequency division so that each channel is divided into multiple frequency components arranged at intervals. This multiplexing scheme called distributed-division multiplexing frequency (FDM). Distributed FDM is preferable to effect the separation in frequency. Frequency components that are assigned to the respective channels may be located at regular intervals or different intervals. In any case, you need to distribute a shared control channel in all the resource blocks in this embodiment, the entire frequency block). As an additional multiplexing scheme can also be used CDM in order to cope with the increasing number of multiplexing users. CDM makes it possible to further increase the effect explode frequency. On the other hand, CDM may violate orthogonality and reduce the quality of reception.

In the example, the pilot channel is also allocated in the frequency components distributed along the entire frequency block. The distribution of the pilot channel over the entire frequency range, as shown in figa, it is preferable to accurately perform channel estimation for different frequency components.

On figa blocks RB1, RB2 and RB4 resources are assigned to user 1 (UE1), blocks RB3, RB5 and RB6 resources are assigned to user 2 (UE2), and block RB7 resources assigned to user 3 (UE3). As described above, the information assigning unit of the resource contained in the General control channel. A dedicated control channel for user 1 is allocated in the beginning of the block RB1 resources assigned to the user 1. A dedicated control channel for user 2 is allocated at the beginning of the block RB3 resources assigned to user 2. A dedicated control channel for user 3 is distributed at the beginning of the block RB7 resources assigned to the user 3. It should be noted that figa size of areas Zan what's relevant control channels users 1, 2 and 3 are not equal. This indicates that the amount of information of the dedicated control channel may vary depending on the user. The dedicated control channel is distributed locally in the resources within the resource block assigned to the data channel. In contrast with the distributed FDM, when the channel is distributed resources, distributed in many resource blocks, this distribution scheme is called localized division multiplexing frequency (FDM).

On figa shows another exemplary distribution of allocated control channels. On figa dedicated control channel for user 1 (UE1) is distributed only in the block RB1 resources. On FIGU dedicated control channel for user 1 is allocated the resources are discretely distributed in blocks RB1, RB2 and RB4 resources (in all the resource blocks assigned to the user 1) using the distributed FDM. A dedicated control channel for user 2 (UE2) is also distributed resources, discretely distributed in blocks RB3, RB5 and RB6 resources in a manner other than that shown in figa. A dedicated control channel and a shared data channel of the user 2 are multiplexed with separation in time. Thus, a dedicated control channel and a shared data channel user can multiplexiert is camping in all or part of one or more resource blocks, assigned to a user, by using multiplexing separation in time and/or multiplexing separation in frequency (localized or distributed FDM FDM). Allocation dedicated control channel resources, distributed in two or more resource blocks, makes it possible to achieve the effect explode frequency for the dedicated control channel and thereby improving the reception quality of the dedicated control channel.

The following describes an exemplary formats of information part 0 in the control channel L1/L2.

On figs shows an exemplary format of the control channel L1/L2. On figs there are four exemplary format of the control channel L1/L2. The number of characters (or the number of multiplexed users) control channel L1/L2 differs from format to format. Information indicating which one of the four formats in use reported information part 0. When the control channel L1/L2 is used scheme (MCS modulation and coding scheme) modulation and coding communicated to the communication terminal using a broadcast channel, the number of characters required for the control channel L1/L2 varies depending on the number of multiplexed users and MCS level. For the message number of characters as the information part 0 of the control channel L1/L2 is provided by control bits (two of the ITA on figs). For example, when the information part reported 0 bits 00 management, communication terminal decodes the control bits and determines that the number of symbols of the control channel L1/L2 is equal to 100. On figs first two bits of each format corresponds to a fraction of 0, and the control channel with variable length corresponds to the total channel control (part 1 and part 2A for downlink). Instead of the message MCS via a broadcast channel, as figs, MCS can be communicated through official channel L3.

On fig.7D shows a drawing illustrating an exemplary format of the control channel L1/L2 in the case when the number multiplexing users reported for each MCS using the part 0. When the corresponding MCS is selected from a predefined MCS in accordance with the reception quality of each communication terminal, the number of characters required for the control channel L1/L2 varies depending on the reception quality of the communication terminal. To determine the quality of the channel is provided by control bits (8 bits per fig.7D) as information of the part 0 of the control channel L1/L2. On fig.7D it is believed that there are four types of MCS and the maximum number multiplexing users is three. The number multiplexing users from 0 to 3 can be expressed by two bits (00=0 users, 01=1, 10=2, and 11=3 uses the user). In this case, because for each MCS requires two bits for part 0 requires only 8 bits. For example, when the information part 0 bits communicated 01100001 control, each communication terminal determines the management information (for example, part 2A for downlink), corresponding to the reception quality based on the control bit. In the example shown in fig.7D, 01100001 specifies the number multiplexing users 1, 2, 0 and 1. In other words, considering that the reception quality is expressed by four levels (very low, low, medium, high), 01100001 specifies the levels of the reception quality to low, medium, very low and high, and selects the scheme MCS corresponding to the levels of the reception quality (by increasing the level of quality of reception is selected higher MCS level and the number multiplexing users increases).

On file shows the approximate distribution of bits of information (part 0) control channel L1/L2 in a three-sector configuration. In a three-sector configuration for transmission of bits of information (part 0)indicating the transmission formats of the control channel L1/L2 may be provided by three distribution pattern, and the respective sectors can be assigned distribution templates so that the templates do not overlap in the frequency domain. The choice of different patterns of distribution for the neighbour of their sectors (or honeycomb) makes it possible to achieve coordination of the interference.

On fig.7F shows the approximate scheme of multiplexing. In the above example, using the distributed FDM multiplexed various common control channels. However, there may be used any relevant schemes such as multiplexing (CDM code division multiplexing), code division, or multiplexing (TDM, time division multiplexing) with a separation in time. On fig.7F (1) shows an example of the distributed FDM. On fig.7F (1) for a significant user orthogonalization of signals using the discrete frequency components, marked with the numbers 1, 2, 3 and 4. The discrete frequency components can be located at regular intervals, as shown, or at irregular intervals. For neighboring cells for imparting interference of a random nature, when control power transmission, there may be different rules for the location. On fig.7F (2) shows an example of multiplexing code division (CDM). On fig.7F (2) for a significant user orthogonalization of signals used codes 1, 2, 3 and 4. CDM makes it possible to effectively reduce interference to other cells. On fig.7F (3) shows an example of the distributed FDM, when the number multiplexing users is three. On fig.7F (1) discrete frequency components for a significant user orthogonalization of signals Perea what are the numbers 1, 2 and 3. If the number multiplexing users is less than the maximum number, the base station can be configured with the possibility of increasing the transmit power downstream control channels, as shown in fig.7F (4). This is the preferred method to increase the quality of reception, however, may increase interference to other satam if the transfer is on the border of the cell. Can also be used a hybrid scheme of multiplexing CDM and FDM.

Meanwhile, for information transmission part 0 as MCS (a combination of modulation scheme and speed channel coding), and the transmit power may be fixed or may be fixed only MCS, while the transmit power is changed. For all users in a cell can also be used the same information part 0, or the transmission format of the control channel L1/L2 may vary from user to user. For example, the transfer format for users located near the base station can be optimized by appropriate changes in the information part 0, and for users located near the cell edge can be used a fixed transmission format. In this case, you must send users information indicating whether the users to the group cell edge, through, for example, the descending channel management is of L1/L2. For a user not belonging to the group of cell edge, the transfer format, changing intervals (e.g. every TTI), reported information part 0; and for a user not belonging to the group of cell edge, a fixed transmission format for transmitting control information L1/L2.

On fig.7G shows the approximate distribution of the control channel L1/L2 when in a cell are only users 1-4, located near the base station. Rooms at fig.7G correlated with the respective users. For example, "1" corresponds to user 1. In this case, the transfer format is communicated to users 1-4 information part 0, for example, each TTI. On fign shows the approximate distribution of the control channel L1/L2 when in a cell are users 1-4, located near the base station and users 11-14, located on the border of the cell. For users 11-14 is used preset transmission format, and transmission format is not explicitly communicated to the users 11-14. Meanwhile, the transfer format is the same as the preset transmission format, communicated to users 1-4 information part 0.

On Fig shows the approximate method of multiplexing the common control channels in the case where multiplexed multiple users. In this case, the control channel L1/L2 of the soap is separated into resources in three OFDM symbols in each potcake.

Of subcarriers assigned to a control channel L1/L2 form a multiple resource management. For example, one unit of resource management consists of X subcarriers (X is an integer greater than 0). X is set at an optimum value in accordance with, for example, the bandwidth of the system. As a multiplexing scheme for blocks management resources are used or hybrid FDM CDM and FDM. When the control channel L1/L2 uses multiple OFDM symbols, each block resource management is distributed across all OFDM symbols. The number of units of resource management is communicated via a broadcast channel.

The control channel is modulated with data using QPSK or 16QAM. When using multiple speeds (R1, R2, ..., Rn) encoding, Rn seems R1/n.

Even when the information scheduling downlink and information planning uplink communication have different number of bits used blocks resources management of the same size using matching speeds.

On figa shows a partial block diagram of a mobile terminal in accordance with the embodiment of the present invention. The mobile terminal shown in figa contains a module 81 setting the carrier frequency, the module 82 filtering module 83 removal of cyclic prefix (CP), the module 84 rapid change is adowanie Fourier transform (FFT), module 85 CQI measurement module 86 decoding a broadcast channel (or call channel), the module 87-0 decoding the common control channel (part 0), the module 87 decode the shared control channel module 88 decode dedicated control channel and module 89 decoding of the data channel.

Module 81 setting the carrier frequency accordingly adjusts the center frequency of the frequency band of reception so as to be able to receive a signal in the frequency block assigned to the terminal.

Module 82 filter filters the received signal.

Module 83 removal of cyclic prefix removes the guard interval from a received signal and thereby extracts the effective symbols from the received symbols.

Module 84 fast Fourier transform (FFT) converts using the fast Fourier transform information into effective symbols and demodulates information according to OFDM.

Module 85 CQI measurement measures the power level of reception of the pilot channel in a received signal and transmits back to the base station the measurement quality indicator (CQI) quality of the channel. CQI is measured for each resource block in the frequency block, and all measurements reported CQI to the base station.

Module 86 decoding a broadcast channel (or call channel) decodes the broadcast channel. Module 86 decoder is for a broadcast channel also decodes the call channel, if it is found.

Module 87-0 decoding the common control channel (part 0) decode the part 0 in the control channel L1/L2. Part 0 specifies the format for the transmission of the common control channel.

Module 87 decode the shared control channel decode the shared control channel in a received signal and thereby extracts the scheduling information. Information planning contains information indicating whether the resource blocks shared data channel for the terminal, and if the resource blocks assigned, also contains information indicating the corresponding number of units of resources.

Module 88 decode dedicated control channel decodes the selected control channel in a received signal. Dedicated control channel contains modulation scheme data rate channel coding and HARQ information for the shared data channel.

Module 89 decoding of the data channel decodes the shared data channel in a received signal on the basis of information extracted from the dedicated control channel. The terminal can be performed with message base station acknowledgment (ACK) or negative acknowledgement (NACK) in accordance with the result of decoding.

On FIGU also shown a partial block diagram of the mobile terminal. Figv differs from figa the fact that the provided examples and the formation control. On figv for components corresponding to those on figa use the same denoting numbers. "Reverse distribution of assigned resource blocks" on FIGU indicates that the extracted information, distributed in one or more resource blocks assigned to the terminal. "Reverse distribution of other resource blocks" indicates that the extracted information, distributed in blocks of resources over the entire frequency block.

On figs shows the components related to the receiving module of the mobile terminal shown in figa. In this embodiment, it is considered that the mobile terminal performs reception with antenna diversity using two antennas, although this feature is not essential to the present invention. Descending signals received by the two antennas are introduced in the chain 81 and 82 RF reception. Modules 83 removal of cyclic prefix remove the protective interval (cyclic prefix) signal, and the modules 84 fast Fourier transform (FFT) converts signals using fast Fourier transform. Then the signals are combined module combining diversity antennas. The combined signal is entered into the appropriate decoding modules, shown in figa, or in the separation module, shown in figv.

On figa presents a block diagram showing the approximate% of the SS in accordance with the embodiment of the present invention. In the further description it is believed that the user carrying the mobile terminal UE1, supporting bandwidth 10 MHz, entered the cell or sector, uses for communication bandwidth of 20 MHz. It is also considered that the minimum bandwidth of the communication system is equal to 5 MHz, and the bandwidth of the system is divided into four frequency block 1-4, as shown in figure 2.

In step S11, the terminal UE1 receives the broadcast channel from the base station determines the frequency blocks that the terminal UE1 is allowed to use. A broadcast channel, for example, is transmitted using a bandwidth of 5 MHz, containing the band center frequency of 20 MHz. This provides for terminals supporting different width bands, easy reception of the broadcast channel. For example, the base station allows the user to perform communication using a bandwidth of 10 MHz using a combination of two adjacent frequency blocks, i.e. the frequency blocks 1 and 2, 2 and 3 or 3 and 4. The base station may allow the user to use any or a specific combination. In this example, it is believed that the terminal UE1 permitted frequency blocks 2 and 3.

In step S12, the terminal UE1 receives downlink pilot channel and measures the quality of a received signal for the respective frequency blocks 2 and 3. The quality of PR is to make the signal is measured for each resource block and respective blocks of resources, all measurements are reported as indicators (CQI) channel quality to the base station.

In step S21, the base station performs scheduling frequency for each frequency block based on the CQI indicators reported by the terminal UE1 and other terminals. In this example, the data channel for the terminal UE1 is transmitted using frequency blocks 2 and 3. This information is managed by the module 31 controls the assignment of frequency blocks (see figure 3).

In step S22, the base station generates a service control channel for each frequency block in accordance with the information planning. The service control channel includes a common control channel (control channel and dedicated control channels.

In step S23, the base station transmits the control channels and common channels of data of the respective frequency blocks according to the schedule information.

In step S13, the terminal UE1 receives signals transmitted over frequency blocks 2 and 3.

In step S14, the terminal UE1 determines the format of the transmission of the common control channels on the basis of the part 0 of the control channels received through blocks 2 and 3.

In step S15, the terminal UE1 separates the common control channel from the control channel, the received frequency unit 2 decodes the shared control channel, and thereby extracts the scheduling information. Similarly, the terminal UE1 separates on the second control channel from the control channel, accepted in the frequency block 3, decodes the shared control channel, and thereby extracts the scheduling information. Information planning for each of the frequency blocks 2 and 3 contains information indicating whether the shared data channel for the terminal UE1 resource blocks, and if the resource blocks assigned, also contains information indicating the appropriate number of resource blocks. If for any shared data channel for the terminal UE1, the resource block is assigned, the terminal UE1 returns to standby mode and waits for the following control channels. If the resource blocks for a shared data channel for the terminal UE1 is assigned, the terminal UE1 separates the dedicated control channel from the received signal and decodes the selected control channel in step S16. Dedicated control channel contains modulation scheme data rate channel coding and HARQ information for the shared data channel.

In step S17, the terminal UE1 decodes the shared data channel in a received signal on the basis of information extracted from the dedicated control channel. The terminal can be performed with message base station acknowledgment (ACK) or negative acknowledgement (NACK) in accordance with the result of decoding. Next, the above steps are repeated.

On figv and 9C shows the details of steps S14-S16 on figa. Figv is the POC scheme, showing an exemplary process of parallel reception. In step S1, the terminal UE1 checks the information part 0 General information management. For example, the terminal UE1 checks the value of the two bits representing the information of the part 0, and determines which of the predefined formats selected for the control channel L1/L2.

In step S2, the terminal UE1 determines, for example, the number of symbols of the control channel L1/L2 in one potcake on the basis of a certain format. Here it is considered that the terminal through broadcast information were communicated to the maximum number multiplexing users NUmaxand NDmaxdefined respectively for uplink communication and downlink. The terminal UE1 calculates the size of the data to each user based on the number of symbols of the control channel L1/L2 in one potcake and the maximum number multiplexing users.

In each of steps S3-1 to S3-NDmaxthe terminal UE1 demodulates the item information having the data size for each user calculated in step S2. Each item of information having a data size for each user corresponds to an item of information referred to in the description ring indicator (with reference to five). At steps S3-1 to S3-NDmaxthe terminal UE1 demodulates the information elements related to the descending information management the Oia. In practice, the number of users that communicates, may be less than the maximum number multiplexing users NDmax. In this example, the steps S3-1 to S3-NDmaxare performed in parallel, therefore, the time required for the implementation of steps equal to the time required for demodulation of a single piece of information.

In step S4, the terminal UE1 determines whether top-down management information for himself.

At each of steps S5-1 to S5-NUmaxthe terminal UE1 demodulates the item information having the data size for each user calculated in step S2. At steps S5-1 to S5-NUmaxin contrast to steps S3-1 to S3-NDmaxthe terminal UE1 demodulates the information elements related to the rising of management information. Information elements related to the descending information management, and information elements related to the ascending information management, can have the same data size or different sizes of data. During these steps the number communicates user may also be less than the maximum number multiplexing users NUmax. In this example, the steps S5-1 to S5-NUmaxare performed in parallel, therefore, the time required for the implementation of steps equal to the time required for demodulation of a single piece of information.

In step 6, the terminal UE1 determines there is a rising management information for himself.

In the above example, assume that the maximum number multiplexing users is determined separately for uplink communication and downlink. Meanwhile, there is a case where the broadcast information is reported only the total number of Nallmultiplexing users for uplink communication and downlink. In this case, the number for uplink communication and the number for downlink, comprising a number of Nall, unknown. Therefore, the steps S3 to downlink should be carried out for a total of Nalland steps S5 to uplink connection should be carried out for a total of Nall. Thus, in this case, the number of steps demodulation in a communication terminal increases. On the other hand, however, the amount of broadcast information necessary for the message number multiplexing users, decreases the amount of information necessary for message Nallless than the amount of information necessary for message NDmaxand NUmax).

Figs is a block diagram showing an exemplary process consistent reception. In step S1, as figv, the terminal UE1 checks the information part 0 General information management. In step S2, the terminal UE1 determine the screen separates, for example, the number of symbols of the control channel L1/L2 in one potcake based on the format defined in step S1. The terminal UE1 calculates the size of the data to each user based on the number of symbols of the control channel L1/L2 in one potcake and the maximum number multiplexing users.

In step S3, the terminal UE1 clears the parameter n indicating the number of calculations (n=0).

In step S4, the terminal UE1 demodulates the item information having the data size for each user defined in step S2. In this step, the terminal UE1 demodulates the item information related to the descending control information.

In step S5, the terminal UE1 determines if for him descending the management information. If tunneling control information for the terminal UE1 is not received, the terminal UE1 moves to step S6, and increments the parameter n by 1. Then, the terminal UE1 repeats step S4 for demodulation other item information. The terminal UE1 repeats the steps S4-S6 until and unless it received top-down management information or the parameter n reaches the maximum number of NDmax.

In step S7, the terminal UE1 perebolee parameter n indicating the number of calculations (n=0).

In step S8, the terminal UE1 demodulates the item information having the data size for each user defined in step S2. In this step, the terminal UE1 is emuleret item information, related to rising information management.

In step S9, the terminal UE1 determines obtained is rising information management. If rising management information for the terminal UE1 is not received, the terminal UE1 moves to step S10, and increments the parameter n by 1. Then, the terminal UE1 repeats step S8 for demodulation other item information. The terminal UE1 repeats steps S8-S10 until then, unless it received a rising management information or the parameter n reaches the maximum number of NUmaxand then terminates the process.

In this example, the demodulation of the information elements is carried out sequentially. Therefore, the minimum time required for demodulation, essentially equal to the time required for demodulation of one of the downside of the item information and the rising one item of information; and the maximum time required for demodulation, essentially equal to the time required for demodulation of NDmaxtop-down information elements and NUmaxbottom-up information elements.

Meanwhile, there is a case where the broadcast information is reported only the total number of Nallmultiplexing users for uplink communication and downlink. In this case, the number for uplink communication and the number for the descending line tie is, the components of the Nall, unknown. Therefore, the steps S4-S6 for downlink should be carried out until the total number of Nalland the steps S8-S10 for uplink connection should be carried out until the total number of Nall. Thus, in this case, the number of steps demodulation in a communication terminal increases. On the other hand, however, the amount of broadcast information necessary for the message number multiplexing users, decreases the amount of information necessary for message Nallless than the amount of information necessary for message NDmaxand NUmax).

The second option exercise

Because the shared control channel (containing part 0) is the information necessary for all users and is used for decoding of data channels, for the shared control channel is encoding with error detection (CRC) and channel coding. In the second embodiment, the present invention describes exemplary ways of encoding with error detection and channel coding. In configuration figv it is considered that the management information L1/L2 (part 0) and the management information L1/L2 (parts 2A and 2b) impeller are encoded separately (i.e. for part 0, part 2A and part 2b respectively provided by the modules 41 and 42 And to the national-code/extension-range/modulation-data). The following describes this configuration change.

On figa shows how, when the part 0 and part 2A and 2b are encoded with error correction together and impeller are encoded separately. In this case, each of the communication terminal UE1 and UE2 performs error detection collectively for parts 0 and parts 2A and 2b, and extracts the control channel L1/L2 of parts 2A and 2b on the basis of 0.

Because the code with the error detection (CRC) for part 0 becomes large relative to the control bit part 0, this method makes it possible to reduce losses from coding errors.

On FIGU shows how, when the part 0 and part 2A and 2b are encoded with error correction and impeller are encoded separately. In this method, in comparison with the case on figa losses become larger. However, this method eliminates the need for machining parts 2A and 2b, when the error detection part 0 failed.

On figs shows how, when the part 0 and part 2A and 2b are encoded with error correction and impeller are encoded together. When this method to retrieve information part 0 is necessary to decode as part 0 and part 2A and 2b. However, the method increases the efficiency of channel coding.

In the second embodiment, the encoding method with error detection and channel coding part 0 and parts 2A and 2b of vivalda with reference to figa-10C. However, the above methods can also be applied to a common control channel that is different from the parts 2A and 2b.

A third option exercise

To improve the quality of the receiving signal of the control channels, it is preferable to carry out the adaptation of the communication line. In the third embodiment of the present invention to implement adaptation of the communication line used control (TPC) power transmission and adaptive modulation and coding (AMC). Figure 11 shows a drawing illustrating an example of controlling the transmission power when the transmission power of downlink is controlled to obtain the desired reception quality. With reference to 11, a high level of transmission power used for transmitting the downward channel to the user 1, since the user 1 is away from the base station and the channel state is expected poor. Meanwhile, the state of the channel of user 2 is close to the base station, expected to be good. In this case, the use of high power level for transmission of the descending channel, the user 2 can increase the quality of the received signal for user 2, but may also increase interference to other users. Because the state of the channel of user 2 is good, it is possible to achieve the desired reception quality with a lower power level PE is Adachi. Therefore, the descending channel for user 2 is transmitted using a relatively low power level. When using only the control of transmit power used for the fixed combination of modulation schemes and channel coding schemes, known for transmitting and receiving ends. Accordingly, in this case there is no need to inform users of modulation schemes and channel coding used for demodulation channels with the management of power transmission.

On Fig shows a drawing illustrating an example of adaptive modulation and coding (AMC), when one or both of the modulation schemes and coding schemes adaptively changed in accordance with the channel conditions to achieve the desired reception quality. Considering that the transmit power of the base station is constant, it is expected that the channel state of user 1 away from the base station is bad. In this case, the level of modulation and/or the speed channel coding are set at a small value. In the example on Fig, for user 1 as the modulation scheme QPSK is used, and therefore, each symbol is transmitted two bits of information. On the other hand, the state of the channel of user 2 is close to the base station, expected to be good, and, consequently, the level of modulation is/or speed channel coding are set on a large level. On Fig, for user 2 as the modulation scheme 16QAM is used, and therefore, each symbol is transmitted four bits of information. This method makes possible the achievement of the required quality for a user with poor channel state by increasing reliability and achieving the desired reception quality, and increase throughput for a user with good channel state. When using adaptive modulation and coding, for demodulation of the channel needed information modulation containing the modulation scheme, coding scheme and the number of characters of the received channel. Therefore, it is necessary to provide information modulation receiving side. When the above-described method, the number of bits transmitted per symbol is also changed depending on the channel status. In other words, when the channel state is good, for the transmission of information requires a small number of characters, but when the channel state is bad, for the transmission of information requires a large number of characters.

In the third embodiment of the present invention control the transmit power is exercised for the common control channel, which must be decoded by any user, and one or both of the power transmission and adaptive modulation and coding are performed for the selected Kahn the minerals management the decoded selected by users who are assigned resource blocks. The third option may not be made through any of the three ways described below.

(1) TRS-TRS

In the first method for the shared control channel and dedicated control channels is only controlling transmit power. In this method duly adopted by the channel can be demodulated without adopted in advance the information modulation containing modulation scheme, encoding speed, etc. because they are fixed. The common control channel is allocated in the frequency block and, therefore, is transmitted using the same transmission power over the entire frequency range. Meanwhile, a dedicated control channel for a user allocated to the resources in the resource block assigned to the user. Therefore, the transmission power of the dedicated control channels can be adjusted for the respective users that are assigned blocks of resources to improve the quality of the received signal users. Taking as an example figa and 7B, the common control channel can be transmitted with a level of P0transmit power allocated to the control channel for user 1 (UE1) can be transmitted with a level of P1transmit power corresponding to the user 1, a dedicated control channel on which isolates 2 (UE2) may be transmitted with a level of P 2transmit power corresponding to the user 2 and the dedicated control channel for user 3 (UE3) can be transmitted with a level of P3transmit power corresponding to the user 3. In this scenario, the shared data channels can be transmitted using appropriate levels of P1, R2and R3transmit power or different level PD power transfer.

As described above, the common control channel is decoded by all users. In addition, the appointment of a common control channel message is the availability of data and information planning data users assigned resource blocks. Therefore, the transmit power used for transmitting the common control channel can be adjusted to achieve the required quality for the users who are assigned resource blocks. For example, on figa and 7B, if all the users 1, 2 and 3 assigned resource blocks are located around the base station, the level of P0power transmission for shared control channel may be set to a relatively small value. In this case, users other than the users 1, 2 and 3, which are, for example, at the edge of the cell may not be able to decode the shared control channel accordingly. However, this does not cause great is almost no problem, since users of the resource blocks is assigned.

(2) TRS-AMS

The second method for shared control channel controls the transmit power, and for the dedicated control channels are adaptive modulation and coding. When applied AMC, mainly kindly requested to provide users with information modulation. In this way information modulation for the selected control channels contained in the General control channel. Therefore, each user first receives, decodes and demodulates the General control channel and determines whether the data to the user. If the data user has, the user extracts the scheduling information, as well as information modulation containing the modulation scheme, coding scheme and the number of characters allocated to the control channel. The user then demodulates the selected control channel in accordance with the information planning and information modulation, thereby obtaining information modulation shared data channel, and demodulates the shared data channel.

The control channels have lower demands on bandwidth compared to shared data channels. Therefore, the number of combinations of modulation and coding AMC common control channel may be less than use is radiated to the shared data channel. For example, AMC common control channel as the modulation scheme constantly QPSK is used, and the encoding speed can be selected from 7/8, 3/4, 1/2 and 1/4.

The second method provides the ability for all users to take total control channel with a certain level of quality, as well as to improve the reception quality of a dedicated control channels. This is achieved by allocating a dedicated control channels in units of the resource that provides a good channel status for the relevant communication terminal, and by using appropriate modulation and/or coding schemes for the respective terminal communication. Thus, in this method for the dedicated control channels are used adaptive modulation and coding to improve the quality of its reception.

When using a very limited number of combinations of modulation and speed channel coding, the reception side can be made with the possibility of checking all combinations for demodulation of dedicated channel management and to use appropriately demodulated information. This approach makes possible the implementation of the AMS certain level without prior notice information modulation users.

(3) TRS-TRS/AMC

In the third method for the shared control channel is controlled by the transmit power, and for the dedicated control channels are implemented as management of power transmission and adaptive modulation and coding. As described above, when applied AMC, mainly kindly requested to provide users with information modulation. It is also preferable to provide a large number of combinations of modulation and speed channel coding to achieve the desired reception quality, even when a high degree of fading. However, the use of a large number of combinations complicates the process of determining the appropriate combination, increases the amount of information required for a message to a particular combination, and thereby increases the workload for processing and loss. In the third method, the reception quality is supported by a combination of TCP and AMC. In other words, there is no need to compensate all the sinking exclusively through the AMC. For example, the selected modulation scheme and a coding scheme that is close to achieving the required quality, and then adjusts the transmit power for the full achievement of the required quality at the selected modulation scheme and the coding scheme. This method makes it possible to reduce the number of combinations of modulation schemes and channel coding.

In all three methods described above, for the General control channel is carried out only what about the control of transmit power. Therefore, the user can take a shared control channel and can also easily obtain the management information of the common control channel. Unlike AMC, control of the transmission power does not change the amount of information transmitted per symbol, and, hence, the General control channel can easily be transmitted using a fixed format. It is also expected high effect explode in frequency, because the shared control channel is distributed over the entire frequency block or multiple blocks of resources. This, in turn, makes it possible to achieve a sufficient reception quality by a simple control transmission power, when governed by the average power level over a long period. However, the implementation only control the transmit power for the common control channel is not the essential feature of the present invention. For example, the format of transmission of the common control channel may change with a long interval and to communicate over a broadcast channel.

Meanwhile, the inclusion of information management AMC (data modulation) for the selected control channels in a common control channel makes possible the implementation of the AMC for the selected control channels and thereby makes it possible to increase the transmission efficiency and quality of a dedicated ka is Alov management. While the number of characters required for the shared control channel is essentially constant, the number of characters required for a dedicated control channel varies depending on the modulation scheme, the coding rate, number of antennas, etc. for Example, assuming that the number of characters is N, when the speed channel coding 1/2, and the number of antennas is 1, the number of symbols becomes equal to 4N, when the speed channel coding 1/4 and the number of antennas is 2. In the embodiment, it is possible to transmit the control channel using a simple fixed format, as shown in figa and 7B, even if the number of characters required for the control channel changes. Although the number of characters required for the dedicated control channel is changed, the number of characters required for the shared control channel is not changed. Consequently, it is possible to flexibly cope with changes in the number of characters by changing the proportions of the dedicated control channel and a shared data channel in a given resource block.

The fourth option exercise

The transmission formats of data reported through the control channels L1/L2. Therefore, the transmission format of the control channel L1/L2 user devices must be known. The simplest way to achieve this is to use the NII one fixed transmission format for the control channel L1/L2 for all users in the cell. However, for efficient use of radio resources and to adapt the communication line is preferably adaptive to change even the transmission format of the control channel L1/L2 from user to user. In this case, you must inform the selected transmission format to each user device. In the fourth embodiment of the present invention, the transmission format of the control channel L1/L2 adaptive changes.

In General, the amount of data needed to transmit the information varies depending on the transmission format, even if the number of transmitted information bits constantly. The transmission format is determined by the parameters containing a combination of modulation schemes and channel coding schemes (MCS). Information MCS can also be determined by a combination of modulation scheme and data size.

Referring to Fig, the amount of data needed to transmit information using MCS-2 (modulation scheme = QPSK, channel coding scheme R=1/4), twice the amount of data needed to transmit the same information using MCS-1 modulation scheme = QPSK scheme channel coding R=1/2). The amount of data needed to transmit information using MCS-3 (modulation scheme = QPSK, channel coding scheme R=1/6) is three times larger than the size of data needed for the peredachi the same information using MCS-1 modulation scheme = QPSK, diagram of channel coding R=1/2). Thus, when the MCS used for the control channel L1/L2 is changed, the size of the data control channel L1/L2 is changed. If MCS in the decoding process is unknown, you may have to repeat the process until the number of possible MCS. In the decoding process is performed for each possible MCS, user device necessary information that indicates the number of multiplexing users, the management information which is multiplexed in the control channel L1/L2, to determine whether the management information for user device (user device may retrieve the management information for yourself, if it is available, by decoding of the information elements until the number of multiplexed users).

As described in the first embodiment, with reference to figv and 9C, the number multiplexing users in the control channel L1/L2 may be communicated to the user devices separately for uplink communication and downlink, or may be reported as the total number multiplexing users for uplink communication and downlink. The number of radio resources required for the message number multiplexing users and workload processing in the user the ski devices, varies depending on which of the two methods is used.

Before describing the various ways in accordance with the fourth embodiment are given the definition used symbols (parameters):

- NMCSspecifies the number of schemes MCS provided for the control channel L1/L2. Combination circuits data modulation and channel coding schemes used for the control channel L1/L2, is represented as MCS-1-MCS-NMCS.

- NL1L2(max)specifies the maximum number of control channels L1/L2, which can be multiplexed in one TTI (when using the most effective MCS).

- NUE,D(m) indicates the number of users using MCS-m downlink (smaller number (m) is assigned to the scheme MCS with a higher efficiency of transmission).

- NUE,U(m) indicates the number of users using MCS-m in the ascending line (the smaller the number (m) is assigned to the scheme MCS with a higher efficiency of transmission).

- NDspecifies the number of users multiplexing control channels L1/L2 related to the downward transfer (specifies the value of NDwhen using MCS with the highest transmission efficiency).

- NUspecifies the number of users multiplexing control channels L/L2, related to the upward transmission (specifies the value of NUwhen using MCS with the highest transmission efficiency).

- NDmaxspecifies the maximum number multiplexing control channels L1/L2 related to the downward transfer (ND≤NDmax).

- NUmaxspecifies the maximum number multiplexing control channels L1/L2 related to the upward transmission (NU≤NUmax).

NL1L2(max) specifies the maximum number multiplexing control channels L1/L2 in any potcake andspecifies the maximum number multiplexing control channels L1/L2 in particular potcake.

On figa shows a drawing illustrating the transmission of downlink control L1/L2 in four TTI with different value sets. On FIGU shows the approximate values videopreteen parameters in connection with figa. On figa "D" indicates information related to the downlink, a "U" indicates information related to uplink communications. As shown in figa, the data size information is changed in accordance with the applicable MCS. On figa and 14C for the sake of brevity, there are only two types of schemes (MCS efficiency of transmission MCS-1 higher than MCS-2). Suppose MCS-1 is used for all users, and information on the situation for nine users can be transmitted in the frequency band, used in TTI-1. Regarding downlink, D3 uses MCS-1 with high transmission efficiency, a D1 and D2 use MCS-2 with low transfer efficiency (FIGU NUE,D-MCS-1 is 1 and NUE,D-MCS-2 is equal to 2). As described above with reference to Fig, the data size decreases with increasing the effectiveness of MCS. Relative to the upward communication line, U2 and U3 using MCS-1 with high transmission efficiency, and U1 uses MCS-2 with low transfer efficiency (FIGU NUE,U-MCS-1 is equal to 2 and NUE,D-MCS-2 is equal to 1). Although TTI-1 for the downlink can be multiplexed up to five usersonly three users are multiplexed in fact (ND=3). Also, although in TTI-1 for uplink communication can be multiplexed up to four usersonly three users are multiplexed in fact (NU=3). Approximate values for other TTI also shown in figv.

Below describes how 1-7 message to the user device number multiplexing users. In the following description it is believed that the transfer format (i.e. the number of MCS) control channel L1/L2 varies from user to user. Characteristics of the relevant methods are shown in Fig.

(Method 1)

The Spa is both 1 number multiplexing users for each MCS (N UE,U(m) and (NUE,D(m)) is reported to the user devices each TTI. By this method the number multiplexing users reported separately for uplink communication and downlink. Therefore, the user device may retrieve the management information for him (if available) by performing the decoding process until NUE,U(m)+NUE,D(m) times (number of times may be referred to as the number of steps of the blind detection). This method also makes it possible to freely set the value of the MCS-m for each user and, therefore, can efficiently transmit the control channel L1/L2 (provides the most efficient use of radio resources). Because the number of characters required for the control channel L1/L2, reported information part 0, the boundary between the control channel L1/L2 and shared data channel can be changed for each TTI.

(Method 2)

In method 2 MCS for the control channel L1/L2 is also regulated by each TTI. In this way the number multiplexing control channels L1/L2 for uplink communication and downlink (and: values are based on the most efficient MCS) are determined separately and are communicated to the user devices each TTI. Although MCS is adjusted each TTI DL is each user, the number of MCS selected for the respective user devices are disclosed. Therefore, the number of steps of the blind detection is represented as.

In this way, although the number of steps of the blind detection becomes much more than in method 1, the number of bits required to represent the number multiplexing control channels L1/L2 can be reduced. Thus, this method is preferable in terms of reducing the number of bits of information part 0. Because MCS is adjusted each TTI for each user, the method 2 makes it possible to use the radio as effective as method 1.

(Method 3)

In method 3 MCS for the control channel L1/L2 is also regulated by each TTI. In this way the total number multiplexing control channels L1/L2 for uplink communication and downlink (: values are based on the most efficient MCS) is reported to the user devices each TTI. Although MCS is adjusted each TTI for each user, the number of MCS selected for the respective user devices are disclosed. Therefore, the number of steps of the blind detection is represented as.

In this way, although the number of steps of the blind detection becomes the even more than method 2 (two times even more than in method 2), the number of bits of the information portion 0 may be further reduced. Because MCS is adjusted each TTI for each user, method 2 also makes it possible to use the radio as effective as method 1.

(Method 4)

In method 4 MCS for each user is not regulated by each TTI, and is regulated with a long interval and reported through the top level (for example, information management L3). Meanwhile, the number multiplexing users reported every TTI separately for uplink communication and downlink. MCS for each user is adjusted for a longer interval than when the methods 1-3. Therefore, to prevent the deterioration of reception due to the instantaneous fading preferably used capacity management transfer. In this way the number multiplexing control channels L1/L2 for uplink communication and downlink (and: values are based on the most efficient MCS) are determined separately and are communicated to the user devices each TTI. The number of blind detection, although it depends on the MCS becomes less than or equal to.

In this way, as is the MCS for each user reported only with a long interval, it becomes possible to make the number of bits of the information portion 0 is less than in method 1. Meanwhile, since the MCS is updated infrequently, the usage efficiency of radio resources becomes smaller than in method 1.

(Method 5)

In method 5 MCS for each user is also not regulated by each TTI, and is regulated by a longer period and reported through the top level (for example, information management L3). Meanwhile, each TTI reported the total number multiplexing users for uplink communication and downlink. As in method 4, as MCS for each user adjustable only at long intervals, to prevent the deterioration of reception due to the instantaneous fading preferably used capacity management transfer. In this way the number multiplexing control channels L1/L2 for uplink communication and downlink (: values are based on the most efficient MCS) is reported to the user devices each TTI. Therefore, the number of blind detection, although it depends on the MCS becomes less than or equal to.

Because this method MCS is updated infrequently, the usage efficiency of radio resources becomes essentially this is e, as with method 4. In method 5, as the number of multiplexed users is reported collectively for uplink communication and downlink, the number of steps of the blind detection increases, however, the number of bits of information part 0 is less than method 4.

(Method 6)

Same as in method 5, MCS for each user is not regulated by each TTI, and is regulated by a longer period and reported through the top level (for example, information management L3). In that way each TTI of the user devices reported total maximum number multiplexing control channels L1/L2 for uplink communication and downlink, and with an interval longer than the TTI, the user devices via the top level (for example, through a broadcast channel (VSN)) reported the maximum number multiplexing control channels L1/L2 defined separately for uplink communication and downlink downlink (NUmaxand NDmax). As MCS for each user adjustable only at long intervals, to prevent the deterioration of reception due to the instantaneous fading preferably used capacity management transfer. The number multiplexing control channels L1/L2, which is necessary soo is to pay each TTI, is represented as the total maximum number ofbased on the most efficient MCS.

In this way the relative position of the distribution (the radio resource assignment) ascending information management and descending control information is predefined. For example, top-down control channels for respective users of the first distributed sequentially, and then distributed bottom-up control channels for respective users. In the example shown in Fig, the pattern is specified as "on", allowed, and distribution scheme, indicated as "×"is prohibited. Although you can use any appropriate distribution scheme that is different from those shown in Fig, you must determine and record the allocation in advance. Fixing the relative positions of the distribution in advance makes it possible to reduce the number of steps of the blind detection.

On Fig areas surrounded by dotted lines indicate the elements of information decoded in a blind detection in the case when NDmax=6, NUmax=4 and ND+NU=9. The user device may not perform blind detection in areas not surrounded by dotted lines. Thus, the determination of the relative provisions of the distribution is to be placed upward and downward control information in advance makes it possible to reduce the number of steps of the blind detection, perform user device.

Because this method MCS is updated infrequently, the usage efficiency of radio resources is essentially the same as in method 4. In method 6, as the number of multiplexed users is reported collectively for uplink communication and downlink, the number of bits of the information portion 0 is less than method 4.

(Method 7)

In method 7 for all users in a cell is used fixed MCS. In that way each TTI of the user devices reported total maximum number multiplexing control channels L1/L2 for uplink communication and downlink, and with an interval longer than the TTI, the user devices via the top level (for example, through a broadcast channel (VSN)) reported the maximum number multiplexing control channels L1/L2 defined separately for uplink communication and downlink downlink ((NUmaxand NDmax).

As in method 6, it is possible to reduce the number of steps of the blind detection carried out by the user device by determining the relative positions of the ascending and descending control information in advance. When the way 7, since all users use the same fixed CS, the usage efficiency of radio resources can be lower than with other methods. However, as the number of multiplexed users is reported collectively for uplink communication and downlink, the number of bits of the information portion 0 is less than method 4.

The fifth option exercise

As described above, when using the MIMO scheme, the number of bits of control information necessary for descending data (information grant top-down planning)containing the vectors pre-coding, transmission formats and the HARQ information may vary depending on the selected MIMO scheme. This is for the reason that the number of threads, the number of code words and the number of selective frequency vectors pre-coding varies depending on the MIMO scheme.

Here for such information grant top-down planning that require a variable number of bits of the control, it is preferable to select a channel coding scheme, which enables efficient transmission (which leads to greater effect coding), fast decoding (in the most rapid cases with only one decoding process) and reducing the number of steps the blind coding (through the use of a fixed or known size of the coding block). Methods channel codero the project in General is described above with reference to Fig.6. In the fifth embodiment of the present invention methods of channel coding are described in more detail.

Next, we describe three methods of channel coding for information grant top-down planning.

(The first method)

On Fig shows a drawing illustrating an example in which the portion of the control signal is encoded using the same channel coding scheme for all users, and another part of the control signal is encoded using different channel coding schemes for the respective users. In the first method, the control signal is divided into the main part of the size of the main data and the additional part. The size of the basic data is defined so that the main part could contain all the information needed to transmit a single stream. The same channel coding scheme is applied to users, requiring only the management information in the main part. If the number of threads is greater than 1, in addition to the main part of the additional part. The size of these additional parts may vary from user to user. Therefore, an additional part is encoded using different encoding schemes for the respective users (of course, there is the case when for some polzovatelya use the same channel coding scheme). When receiving the control signal, the first user device decodes the main part and thereby obtains information management. Then, if it is determined that the user device includes the management information for more than one thread, the user device decodes the additional part and thus receives all the information management for multiple threads. In this method, user device with only one thread should repeat the decoding process only one time. Also, this method makes it possible to improve coding efficiency even when the number of management information varies from user to user.

(The second method)

On figa shows a drawing illustrating another example, when a part of the control signal is encoded using the same channel coding scheme for all users, and another part of the control signal is encoded using different channel coding schemes for the respective users. In the second method, the size of the main part is fixed and smaller than that in the first method. In the first method, the amount of control information needed to transmit a single stream may vary. In the second method, the management information is divided into castes fixed-length and variable-length which are predetermined in the system. The part of fixed length may contain information purposes descending resources and the number of threads. Part of variable length may contain information pre-coding, formats, transmission and HARQ information for all threads. Like the first method, the second method also makes it possible to increase coding efficiency.

On FIGU shows a drawing used to describe ways of decoding grant top-down planning in the user device in the case when part of the control signal is encoded using the same channel coding scheme for all users, and another part of the control signal is encoded using different channel coding schemes for these users.

Option 1: the basic part and an additional part are decoded separately

In this case, an additional part is divided in the unit of resource management, the index of which is predetermined. In the example shown in figv, the main part is divided into a first block, and the additional part is allocated to the second block positioned behind the first block. As the second block can be used a resource block assigned to the shared data channel.

Option 2: the part of fixed length and frequent the variable length decoded separately

In the example shown in figv, the main part is divided into a first block, and the additional part is distributed in a predefined resource block so that the block management resources or part of a resource block assigned shared data channel.

(The third way)

On Fig shows a drawing used to describe the case when the channel coding scheme for the control signal varies from user to user. In the third method, the channel coding scheme is mainly determined for each user (although there is the possibility that due to these conditions the connection for all users use the same channel coding scheme). All elements of management information containing a variable number of management information related to the MIMO collectively impeller coded the user for the user. This method makes it possible elongation of the element channel coding for each user device and thereby makes it possible to achieve efficient encoding.

On Fig shows a table comparing the first to the third methods.

On Fig presents a table showing an exemplary data sizes of the respective information elements.

On Fig shows a table comparing the first to the third methods in terminologist characters. More specifically, Fig shows the number of characters required for information grant top-down planning for each method in the case when the sizes of the data pre-coding information transfer format and HARQ information is fixed to reduce the number of steps of the blind detection. In the example shown in Fig, to calculate the number of characters used, the size of the data shown in Fig. In the first method, information CRC is attached only to the main part (in other words, information CRC is calculated on the basis of both the primary part and secondary part). As the modulation scheme and the channel coding scheme (MCS) for information grant top-down planning uses QPSK and R=1/2. The number of bits In the information vector pre-coding and the number of code words of Ncodewordchange as parameters.

As shown in Fig, when the number of bits of control information pre-coding small (case a), the loss in the first method, slightly more than in the second method, however, the difference can be ignored. Meanwhile, the loss in the third method increase to 30%when the bandwidth is 5 MHz, and increase to 16%, when the frequency band of 20 MHz. When the number of bits of control information pre-coding large (case C), the loss in the first and third ways is Ah become more than the second method.

The present invention is not limited to the specific disclosed variants of implementation, and without deviation from the scope of the present invention can be made variations and modifications. Although in the above description to facilitate understanding of the present invention was used specific values, the values are merely examples, and can also use different values, unless stated otherwise. Differences between the different implementation for the present invention are minor and implementation options can be used individually or in combination. Walking to describe the devices in the above embodiments, implementations were used functional block diagram, the device can be implemented in hardware, software or their combination.

The present international application claims priority of Japanese patent application No. 2007-001862, filed January 9, 2007, and Japanese patent application No. 2007-073732 filed March 20, 2007, the entire contents of which are thus included here by reference.

1. A base station used in a mobile communication system, applying for downlink OFDM containing:
the planning module, configured to determine the radio resource assignment for each podagra so that each is selected from the user device for communication is assigned one or more resource blocks;
the module forming the control channel, configured to generate a control channel containing General information management of distributed resources in a radio communications distributed in the frequency band of the system, and a dedicated information management, distributed in one or more resource blocks assigned to each of the selected user device;
module signal transmission, is configured to generate the transmission signal by multiplexing separation in time the common control information and dedicated control information in accordance with the information of planning planning module,
moreover, the total management information includes an indicator of the format, reflecting one of the preset options that indicates the number of symbols occupied by the common management information in one podagra;
and the total management information includes information elements with a predefined data size, and the number of items of information is less than or equal to a certain value set.

2. The base station according to claim 1, characterized in that one or more items of information included indicator call with a regular or irregular interval.

3. The base station according to claim 2, wherein each of the one or more element is in the information contains the call light, also contains identification information of the call light, which is different from the authentication information of the user device.

4. The base station according to claim 1, characterized in that the portion of the control information allocated to the call light and provided independently of the items of information included indicator call.

5. The base station according to claim 1, characterized in that the combination of modulation and channel coding schemes used for information elements provided for the respective user devices in the common control information, for each podagra are selected from a predefined number of combinations;
and specified the determined set points for each selected combination separately for uplink communication and downlink, the number of items of information in General information management, which use the same combination.

6. The base station according to claim 1, characterized in that the combination of modulation and channel coding schemes used for information elements provided for the respective user devices in the common control information, for each podagra are selected from a predefined number of combinations;
moreover, certain specified ve is hichina set separately for uplink communication and downlink indicates the number of items of information in General information management in the case, when the common control information is applied, the combination of a preset number of combinations of modulation schemes and channel coding, which provides the highest transmission rate.

7. The base station according to claim 1, characterized in that the combination of modulation and channel coding schemes used for information elements provided for the respective user devices in the common control information, for each podagra are selected from a predefined number of combinations;
moreover, certain specified value sets together for uplink communication and downlink indicates the total number of items of information in General information management in the case when the common control information is applied, the combination of a preset number of combinations of modulation schemes and channel coding, which provides the highest transmission rate.

8. The base station according to claim 1, wherein the common control information is transmitted for each podagra as control information of the lower level;
moreover, the MCS information indicating the combination of modulation schemes and channel coding schemes used for the common control information is transmitted as control information of the upper level;
moreover, the information, the practice showing the maximum number of items of information in General information management reported separately for uplink communication and downlink.

9. The base station according to claim 1, wherein the common control information is transmitted for each podagra as control information of the lower level;
moreover, the MCS information indicating the combination of modulation schemes and channel coding schemes used for the common control information is transmitted as control information of the upper level;
moreover, the information indicating the total number of items of information in the common control information that is reported collectively for uplink communication and downlink.

10. The base station according to claim 1, wherein the common control information is transmitted for each podagra as control information of the lower level;
moreover, the MCS information indicating the combination of modulation schemes and channel coding schemes used for the common control information is transmitted as control information of the upper level;
moreover, the information indicating the maximum number of information elements in the common control information transmitted in a given potcake, reported separately for uplink communication and downlink through broadcast information;
moreover, the information that specifies the total maximum number of elements inform the tion in the common control information, transmitted in each potcake, it is reported collectively for uplink communication and downlink;
moreover, the relative position of the upward information management and descending control information in the common control information is predefined.

11. The base station according to claim 1, wherein the common control information is transmitted for each podagra as control information of the lower level;
moreover, the information indicating the maximum number of information elements in the common control information transmitted in a given potcake, reported separately for uplink communication and downlink through broadcast information;
moreover, the information that specifies the maximum total number of information elements in the common control information that is transmitted in each potcake, it is reported collectively for uplink communication and downlink;
moreover, the relative position of the upward information management and descending control information in the common control information is predefined.

12. The base station according to claim 1, characterized in that for each user device, at least for the common control information to control transmission power.

13. The base station according to claim 1, characterized in that for the transmission of General inform the tion control some user devices in a cell of a fixed transmission format, and for transmitting the common control information of the other user devices in a cell use different transmission formats.

14. The base station according to item 13, wherein the specified some user devices are located on the border of the cell.

15. The base station according to claim 1, wherein the management information for each user device includes a main body, having a size less than or equal to the size of the main data and the additional part, and for the main part and the additional part of the channel coding is performed separately.

16. The base station according to item 15, wherein the size of the basic data is fixed and less than the data size information of the management of any of the user devices.

17. The base station according to claim 1, characterized in that the element of channel coding is changed from the user device to the user device.

18. The data transmission method used by a base station in a mobile communication system, applying for downlink OFDM, containing the steps:
determine the scheduling of the radio resource assignment for each podagra so that each of the selected user device for communication is assigned one or more resource blocks;
forms of the regulation on the control channel, contains General information management of distributed resources in a radio communications distributed in the frequency band of the system, and a dedicated information management, distributed in one or more resource blocks assigned to each of the selected user device;
signal transmission by multiplexing separation in time the common control information and dedicated control information in accordance with the information of planning planning module,
moreover, the total management information includes an indicator of the format, reflecting one of the preset options that indicates the number of symbols occupied by the common management information in one podagra;
and the total management information includes information elements with a predefined data size, and the number of items of information is less than or equal to a certain value set.

19. User device used in a mobile communication system, applying for downlink OFDM containing:
a receiving module, configured to receive a signal that includes a control channel containing General information management, distributed resources in a radio communications distributed in the frequency band of the system, and a dedicated information management, distributed in od is n or more resource blocks, assigned to each of the selected user device;
the separation module, configured to separate the control channel and other channels from a received signal;
module decoding the control channel, made with the possibility of decoding the common control information and dedicated control information,
moreover, the module decoding the control channel is configured to analyze indicator format in the common control information to determine the number of symbols occupied by the common management information in one potcake, and the indicator format reflects one of the preset options that indicates the number of characters;
moreover, the module decoding the control channel is configured to determine whether the management information for user devices in any element of the set of information elements with a predefined data size in the common control information by decoding the common control information using a predetermined decoding scheme until the number of times specified a certain amount of many;
moreover, if the management information for user device contains the user device is configured to identify one or more blocks of the Republic of the owls, assigned to the user device based on the control information and demodulation of the identified one or more resource blocks to extract channel data.

20. The user device according to claim 19, characterized in that one or more items of information included indicator call with a regular or irregular interval.

21. The user device according to claim 20, wherein each of the one or more items of information containing the call light, also contains identification information of the call light, which is different from the authentication information of the user device.

22. The user device according to claim 19, characterized in that the portion of the control information allocated to the call light and provided independently of the items of information included indicator call.

23. The user device according to claim 19, characterized in that the combination of modulation and channel coding schemes used for information elements provided for the respective user devices in the common control information, for each podagra are selected from a predefined number of combinations;
moreover, the determined set points for each selected combination separately for the ascending line and the outgoing line number information element in the common control information, which use the same combination.

24. The user device according to claim 19, characterized in that the combination of modulation and channel coding schemes used for information elements provided for the respective user devices in the common control information, for each podagra are selected from a predefined number of combinations;
moreover, the determined set separately for uplink communication and downlink indicates the number of items of information in General information management in the case when the common control information is applied, the combination of a preset number of combinations of modulation schemes and channel coding, which provides the highest transmission rate.

25. The user device according to claim 19, characterized in that the combination of modulation and channel coding schemes used for information elements provided for the respective user devices in the common control information, for each podagra are selected from a predefined number of combinations;
moreover, the determined set together for uplink communication and downlink indicates the total number of items of information in General information management in the case when the total is information management applies a combination of a preset number of combinations of modulation schemes and channel coding, which provides the highest transmission rate.

26. The user device according to claim 19, wherein the common control information is transmitted for each podagra as control information of the lower level;
moreover, the MCS information indicating the combination of modulation schemes and channel coding schemes used for the common control information is transmitted as control information of the upper level;
moreover, the information indicating the maximum number of information elements in the common control information that is reported separately for uplink communication and downlink.

27. The user device according to claim 19, wherein the common control information is transmitted for each podagra as control information of the lower level;
moreover, the MCS information indicating the combination of modulation schemes and channel coding schemes used for the common control information is transmitted as control information of the upper level;
moreover, the information indicating the total number of items of information in the common control information that is reported collectively for uplink communication and downlink.

28. The user device according to claim 19, wherein the common control information is transmitted for each podagra as info is received from the management of the lower level;
moreover, the MCS information indicating the combination of modulation schemes and channel coding schemes used for the common control information is transmitted as control information of the upper level;
moreover, the information indicating the maximum number of information elements in the common control information transmitted in a given potcake, reported separately for uplink communication and downlink through broadcast information;
moreover, the information that specifies the maximum total number of information elements in the common control information that is transmitted in each potcake, it is reported collectively for uplink communication and downlink;
moreover, the relative position of the upward information management and descending control information in the common control information is predefined.

29. The user device according to claim 19, wherein the common control information is transmitted for each podagra as control information of the lower level;
moreover, the information indicating the maximum number of information elements in the common control information transmitted in a given potcake, reported separately for uplink communication and downlink through broadcast information;
moreover, the information that specifies the total max is E. the number of items of information in General information management transmitted in each potcake, it is reported collectively for uplink communication and downlink;
moreover, the relative position of the upward information management and descending control information in the common control information is predefined.

30. The user device according to claim 19, wherein the management information received by user device includes a main body, having a size less than or equal to the size of the main data and the additional part, and for the main part and the additional part of the channel coding is performed separately.

31. The user device according to item 30, wherein the size of the basic data is fixed and less than the data size information of the management of any of the user devices.

32. The user device according to claim 19, characterized in that the element of channel coding is changed from the user device to the user device.

33. The way of reception of the information used by user device in a mobile communication system, applying for downlink OFDM, containing the steps:
receiving a signal that includes a control channel containing General information management, distributed resources in a radio communications distributed in the frequency band of the system, and provide the military with information management, distributed in one or more resource blocks assigned to each of the selected user device;
separation of the control channel and other channels from a received signal;
decoding common control information and dedicated control information, and the step of decoding the analyzed indicator format in the common control information to determine the number of symbols occupied by the common management information in one potcake, and the indicator format reflects one of the preset options that indicates the number of characters;
moreover, in the step of decoding is determined whether the management information for user devices in any element of the set of information elements with a predefined data size in the common control information by decoding the common control information using a predetermined decoding scheme until the number of times specified a certain amount of many;
moreover, if the management information for user device contains, identifies one or more resource blocks assigned to the user device based on the control information and the identified one or more resource blocks demodulator to extract channel data.

34. The base station according to claim 1, from ecaudata fact, that subcarriers allocated for General information administration, form multiple resource management, each of which contains one or more subcarriers;
moreover, when the common control information is distributed to multiple OFDM symbols, each of the sets of resource management is distributed across all OFDM symbols.

35. The user device according to item 30, wherein the additional portion of information management, for which the realized channel coding, distributed in the resource block control or part of unit resources management assigned to the shared data channel;
moreover, the main part of the control information, for which the realized channel coding, and an additional piece of information management, for which the realized channel coding are decoded separately.



 

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6 dwg

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