Configuration of control channels in mobile communication system

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to a method, an apparatus and a system for configuring control channels in a mobile communication network and at a mobile station. The invention provides aligning the size of the control channel information of different formats with an equal number of coded control channel information bits and/or modulation symbols for each control channel. The control channels may contain scheduling-related control information. According to another aspect of the invention, a more flexible solution is proposed which allows taking different geometries of mobile stations in a cell into account. Similar to the aspect above, the size of the control channel information is aligned through modulation and/or coding, although the control channel information is aligned to one out of a set of numbers of coded control channel information bits and/or modulation symbols for each control channel.

EFFECT: improved control channel configuration scheme, particularly control channels relating to transmission of user data.

4 cl, 19 dwg, 14 tbl

 

Area of technology

The invention relates to a method, device and system for configuring control channels in a mobile communication network and mobile station.

The level of technology

Dispatching of packets and transmission of shared channel

In wireless communication systems, where applicable dispatching of packets, at least part of the resources of the radio interface is dynamically assigned to different users (mobile stations - MS). These dynamically allocated resources are typically displayed in at least one shared data channel (SDCH). The data channel for common use, for example, may have one of the following configurations:

- One or more codes in the system, CDMA (Multiple access code division) dynamically shared between multiple Ms.

- One or more subcarriers (subbands) in the system, OFDMA (Multiple access orthogonal frequency division) dynamically shared between multiple Ms.

- Combinations of the above in the system OFCDMA (orthogonal frequency-division multiplexing access with code division) or MC-CDMA (Multiple access code division on many carriers) are dynamically shared between multiple Ms.

The main advantages of dispatching packets are winning� from multi-user diversity by scheduling in the time domain (TDS) and dynamic adaptation speed of the user.

Assuming that the channel conditions of the users change over time due to fast (and slow) decay in a given time, the Manager can assign available resources (codes in case of CDMA, subcarriers/subbands in the case of OFDMA) to users having good channel conditions in scheduling in the time domain.

Features of the DRA and the transmission of the shared channel in OFDMA

In addition to the use of multiuser diversity in the time domain by scheduling in the time domain (TDS), OFDMA is also possible to use multi-user diversity in the frequency domain due to the scheduling in the frequency domain (FDS). The fact that the OFDM signal is constructed in the frequency domain of multiple narrowband subcarriers (usually grouped in sub-bands) that can be dynamically assigned to different users. Thus, a frequency-sensitive properties of the channel, due to multipath, can be used for scheduling users on the frequencies (subcarriers/subbands), which have good channel quality (multi-user diversity in the frequency domain).

As was mentioned briefly above, in real systems OFDM physical resources(A) (subcarriers in the frequency domain and OFDM symbols in the time domain) of ass�tsya in respect of sub-bands in the frequency domain and slots, podkatov, etc. in the time domain. For illustrative purposes, the following description uses the following definition (see also 3GPP TS 36.211 V0.2.1, "Physical Channels and Modulation (Release 8)", November 2006, available online at http://www.3gpp.org and incorporated herein by reference):

slot is defined in the time domain and covers theNsymconsecutive OFDM symbols

- podcat is defined in the time domain and covers theNslotsuccessive slots

- frame is set in the time domain and covers theNsfserial podkatov

a resource element (RE) sets the resource of one OFDM symbol in the time domain and one subcarrier in the frequency domain, which specifies one modulation symbol

- subrange is specified in the frequency domain and covers theNscconsecutive subcarriers

- physical resource block (PRB) covers one sub-band and one slot and contains theNsym×Nscelements of the resource

- block of virtual resources (VRB) has the same size as that of the PRB with respect to the elements of the resource, but is not related to the mapping to physical resources.

Fig.3 shows illustrative grid resources downlink OFDMA channel through which the structure of the resource blocks will be explained in more detail. For illustrative purposes, consider a-level�round frame, for example, proposed in 3GPP TR 25.814, “Physical layer aspects for evolved Universal Terrestrial Radio Access (UTRA), (Release 7)”, version 7.1.0, September 2006 (available at http://www.3gpp.org and are included here in order of reference) or 3GPP TS 36.211.

Accordingly, the frame may, for example, have a length (in time domain) of 10 MS and consists of 10 podkatov length of 1.0 MS. Each podcat can be divided into two slots, each of which contains the given numberof OFDM symbols in the time domain and spans the entire available bandwidth of the channel downlink (i.e., allsubcarriers, which shares the bandwidth of the channel downlink). Each OFDM symbol consists ofof modulation symbols or resource elements.

According to Fig.3, the resource block is formed with a specified number of resource elements or modulation symbols in the frequency range (specified bandwidthsubcarriers) and a given number of OFDM symbols in the time domain (or, more precisely, the modulation symbols from a given number of OFDM symbols in the frequency range specified in a bandwidth ofsubcarriers). Thus, the resource block may have a length podagra or slot podagra in the time domain. In addition, it can be assumed that the number of elements in the resource block of resource�owls (corresponding to the given number of modulation symbols from of OFDM symbols in the resource block) is reserved for signaling control, while the remaining resource elements are used for user data.

For 3GPP Long Term Evolution (see 3GPP TR 25.814), the system 10 MHz (normal cyclic prefix) may consist of 600 subcarriers with a width of 15 kHz subcarrier. Then 600 subcarriers can be grouped into 50 sub-bands of 12 adjacent subcarriers), each sub-band occupies a bandwidth of 180 kHz. Based on the fact that the slot has a duration of 0.5 MS, a resource block (RB) spans 180 kHz and 0.5 MS in this example.

Several physical channels and reference signals are displayed in the physical resources (RE, PRB). Below we will focus on the shared data channel (SDCH) and the control channels L1/L2, which carry the information management level 1 and level 2 to data at SDCH. For simplicity, the mapping of other channels and reference signals is not considered.

Typically, the physical resource block is the smallest unit of allocation of physical resources, which appears SDCH. In the case where the specified blocks of virtual resources, first SDCH may be displayed in a block of virtual resources, and then the block of virtual resources can either be displayed in one physical resource block (local display), or be distributed across multiple physical resource blocks�in (distributed mapping).

For the application of multiuser diversity and to achieve gains from scheduling in the frequency domain data of a particular user should be allocated to the physical resource blocks on which users have a good channel status (local display).

A local example of the display shown in Fig.1, where one podcat covers one slot. In this example, the adjacent physical resource blocks are assigned to four mobile stations (MS1 - MS4) in the time domain and in frequency domain.

Alternatively, users can be allocated in a distributed mode (DM), as shown in Fig.2. The user (mobile station) is allocated to multiple resource blocks that are distributed over a range of blocks of resources. In distributed mode are several possible implementation options. In the example shown in Fig.2, a pair of users (1/2 MS and MS 3/4) share the same resource blocks. Several possible additional illustrative variants of implementation can be found in 3GPP RAN WG#1 Tdoc R1-062089, "Comparison between RB-level and Sub-carrier-level Distributed Transmission for Shared Data Channel in E-UTRA Downlink", August 2006 (available at http://www.3gpp.org and incorporated herein by reference).

Note that multiplexing of local mode and distributed mode in potcake,where the amount of resources (RB), dedicated local mode and distributed mode, may be fixed, semi-static (constant over tens/hundreds of podkatov) or even dynamic (distinguished from podagra to podagra).

In local mode, as well as in distributed mode, in this potcake one or more blocks of data (which, incidentally, are called transport blocks) can be allocated separately to the same user (mobile station) on different resource blocks, which can belong or not to belong to one and the service or the process of automatic repeat request (ARQ). Logically, this can be viewed as the allocation of different users.

Adaptation of the communication line

In mobile communication systems the adaptation of the communication line is a technical solution allowing you to benefit from dynamic resource allocation. One method of adaptation of the communication line provides AMC (adaptive modulation and coding). The speed of data transmission to the data block or dispetcherskogo user dynamically adapts to the instantaneous channel quality of the respective allocated resource by dynamically changing the modulation scheme and coding (MCS) in accordance with channel conditions. This may require evaluation of the quality of the channel on the transmitter for the line tie� to the corresponding receiver. Usually methods a mixed ARQ (HARQ) are optional. In some configurations also may make sense to use fast/slow power control.

Alarm control L1/L2

To inform dispetcherizaciya users about their resource allocation status, transport format and other data associated with the user data (e.g., HARQ), alarm management level 1/level 2 (L1/L2) is transmitted in the downlink (for example, with the user data). Thus, we can assume that each user (or user group identified by group ID) is assigned to a single control channel L1/L2 for providing control information L1/L2 corresponding to(them) to the user(s).

In General, the information transmitted by the alarm control L1/L2, can be divided into the following two categories: information management for General use (SCI), supporting information cat. 1, and dedicated control information (DCI), supporting information cat. 2/3. The format of these types of information of the control channel is set, for example, for transmission of user data in the downlink in 3GPP TR 25.814:

Table 1
FieldSizeComment
cat. 1 (Indicated resource)ID (UE or group)[8-9]Indicates the UE (or UE group) who is to receive the data transfer
Assign resourcesFFSIndicates which (virtual) resource blocks (and levels in multilevel transmission) needs(HN) to demodulate UE.
The duration of destination2-3The period of the assignment, can also be used to control the TTI or permanent traffic control.
cat. 2 (transport format)Information related to multiple antennasFFSThe content depends on the selection of schemes for MIMO/ beamforming.
The modulation scheme2QPSK, 16QAM, 64QAM. In the case of layered transmission that can� to require multiple instances.
The payload size6Interpretation may depend, for example, modulation schemes and the number of assigned resource blocks (see HSDPA). In the case of multi-level transmission may require multiple instances.
cat. 3 (HARQ)If adopted mixed asynchronous ARQThe process number of a mixed ARQ3Specifies the process mixed ARQ, accesses the current transfer.
Version with redundancy2To support the increasing redundancy.
New indicator data1To implement a soft clearing of the buffer.
If adopted mixed synchronous ARQThe sequence number retransmission2Used to receive the redundancy version (to support increasing redundancy) and 'new indicator data' (for the implementation of the soft clearing of the buffer).

Similarly, 3GPP TR 25814 also provides the format of the alarm control L1/L2 for transmission of user data uplink:

Table 2
FieldSizeComment
Assign resourcesID (UE or group)[8-9]Indicates the UE (or UE group), targeting with your selection
Assign resourcesFFSSpecifies which resources are uplink, local or distributed, can use UE for data transmission on uplink.
The duration of destination2-3The period of the appointment. The use for other purposes, for example, to control permanent traffic control, operation 'for each process' or TTI length is FFS.
Transport Format (TF)Transmission parametersFFSTransmission parameters for uplink (modulation scheme, payload size, information associated with MIMO, etc.) that need to use UE. EU�and UE may select a transport format (part of), this field specifies the upper limit of the transport format selected UE.

As can be seen from the above tables 1 and 2, the number of bits of control information varies according to, for example, connection information of the control channel with the transmission of user data in uplink or in the downlink.

In addition, some field format information of the control channel may also depend on the MIMO transmission mode for the data. For example, if data is transmitted in a special mode MIMO (multiple inputs and many outputs), management information L1/L2 for the data may contain information associated with multiple antennas, whereas this information can be omitted for data transmission without MIMO. But also for different MIMO schemes (e.g., single-user (SU) MIMO or multi-user (MU) MIMO) and configurations (e.g., grade, number of threads) information on the control channel (before encoding) may be different (according to the number of bits).

For example, data on the allocated PRB can be transmitted to the UE using multiple code words. In this case, you may need a few times to signal information associated with HARQ, the size of the payload and/or modulation scheme. In addition, information associated with MIMO may include information associated with the prior encoded�eat where the required information is preliminary coding depends on the application single-user MIMO or multi-user MIMO, rank and/or from the number of threads.

Similarly, the format (and size) of the control information L1/L2 may also depend on whether information on the control channel to send data in a distributed or local mode OFDM transmission.

In traditional systems (e.g. high-speed access to the packet data UMTS-HSDPA) information management related to dispatching, usually transmitted using a fixed modulation scheme and coding (MCS), which is known to all mobile stations in radiate.

Use a fixed modulation scheme and coding for the alarm control L1/L2 leads to the fact that different resources have to be used for alarm control L1/L2 on the resources of the physical channel, which, however, is undesirable in view of the complexity UE, scheduling flexibility, etc.

Disclosure of the invention

One solution to mitigate this problem may consist in the provision of mobile stations map indicates, the use of resources of the control channels L1/L2 downlink for each podagra (e.g., in the form of so-called management information cat. 0). However, this approach can b�you unwanted, since it may require additional complication mobile station, may lead to additional delay in the processing of information on the control channel to mobile stations and may also require additional office overhead associated with sending a card indicating the use of resources of the control channels L1/L2 downlink.

Another solution may only allow the selection of a predetermined combination of a mobile station (e.g., a preset/th MIMO mode/configuration). However, this approach may impose an unacceptable restriction on dispatch function, and lead to a significant reduction in system throughput.

Another solution may include sending cards, indicating the use of resources of the control channels L1/L2 downlink for each podagra (i.e. information cat. 0) not include a prior job. Thus, this approach requires that the mobile station tried to blindly decode all possible combinations of modulation schemes and coding and mapping to resource elements for reading control channels in potcake. Accordingly, this approach will lead to significant and potentially unwanted complexity to the mobile stations.

The main objective of the invention comp�it is, to suggest another improved scheme for configuring control channels, in particular control channels related to the transmission of user data.

The main task is solved by the subject matter of the independent claims. Preferential embodiments of the invention are subject of dependent claims.

One main aspect of the invention, therefore, provides for the alignment size information of the control channel different formats with equal number of bits of coded information of the control channel and/or modulation symbols for each control channel. The control channels can, for example, contain the information management related to dispatching, for example, the management information L1/L2. According to another aspect of the invention, provides a more flexible solution which allows to consider different geometries of mobile stations in a cell. Similarly to the above aspect, the size information of the control channel is aligned by means of modulation and/or encoding. However, in this illustrative aspect of the invention, the information of the control channel is aligned with one of the many numbers of bits of coded information of the control channel and/or modulation symbols for each control channel.

Another aspect �of subramania provides for the alignment size information of the control channel different formats with equal number of bits of coded information of the control channel and/or elements of the control channel for each control channel. Thus, the element of the control channel (CCE) corresponds to a given number of modulation symbols or resource elements. Thus, the terms “the CCE number and the given number of modulation symbols or resource elements” essentially equivalent from a technical point of view, since one CCE includes, in turn, the given number of modulation symbols or resource elements.

Accordingly, if the application refers to the alignment size information of the control channel different formats with equal number of bits of coded information of the control channel and/or modulation symbols for each control channel, this principle is also applicable to the alignment size information of the control channel different formats with equal number of elements of a control channel for each control channel.

One variant of the invention relates to a method that can be used to facilitate blind detection of multiple control channels in the communication system at the receiver side. It is assumed that provided multiple control channels, and the information of the control channel of the control channels have different formats, for example, differently structured and/or has a different length. According to this embodiment of the transmitting object communication system can be applied to each control channel with�him a modulation and coding associated with the format information of the control channel for the control channel. The use of modulation schemes and coding to control channel leads to a corresponding generation of an equal number of bits of coded information of the control channel (for example, output from the encoder to the modulation and/or modulation symbols (e.g., output by the modulator) for each control channel.

Generated whether it is equal to the number of bits of coded information of the control channel and the modulation symbols for each control channel or is generated if an equal number of modulation symbols for each control channel may, for example, depend on the processing information of the control channel and/or configuration of individual objects (such as encoders, modulators, multiplexers, etc.).

In yet another embodiment, different formats of information of the control channel of the control channels have different number of bits of information on the control channel. In the limiting case, each of the different formats of the control channel has a separate number of bits of information on the control channel.

In one embodiment, the implementation, the use of modulation schemes and coding includes coding information of the control channel of the coding rate given by the modulation scheme and coding related to the format of the control channel, and modulate� coded control channels according to the modulation scheme, issued by the modulation scheme and coding related to the format of the corresponding control channel. In addition, during the apply phase modulation schemes and coding, you can display the bits of coded information of the control channel or the modulation symbols of the control channels in the physical channel resource downlink for transmission. In one example, the modulation symbols can be subjected to OFDM modulation and then display in a physical channel for transmission.

In one possible illustrative and implement schemes modulation and coding is used according to the invention, all modulation schemes and coding associated with the formats of the control channel, give the same modulation scheme, but different coding rate. In this illustrative implementation, the encoder can thus, to adapt the encoding rate to equal the number of bits of coded information of the control channel and, due to the same modulation schemes all schemes modulation and coding, is also equal to the number of modulation symbols for each control channel generated by the modulator.

Information on the control channel may have a different structure/format. The format information of the control channel may, for example, depend on at least one of the following options:

- the relationship of the control channel to the scheme or MIMO schemes� of beamforming, used or to be used in the user data transmission,

- the relationship of the control channel to the transmission of user data uplink or downlink,

- the relationship of the control channel using OFDM transmission in local mode or in distributed mode for transmission of the user data.

Alternative or optional, the control channel may carry information relating to paging, or information relevant to answering procedure (random) access uplink.

In one illustrative embodiment of the at least one receiver (control channels) pre-configured with a specific MIMO scheme, and the receiver may detect mode blind detect whether the OFDM transmission in local mode or in distributed mode for transmission of user data, and whether the control channel to the transmission of user data uplink or downlink, for selecting an appropriate modulation scheme and coding for demodulating and decoding the control channel. For this reason, in this embodiment, the implementation, identifying the transmission mode and the attitude information of the control channel to the uplink or downlink, the receiver mo�et to determine the correct format of a control channel through blind detection, and can decode the information of the control channel of the control channels (note, what the receiver might need to process not all of the control channels - see below).

Alternatively, in another embodiment of the at least one receiver pre-configured for transmission in local mode or in distributed mode. In this case, the receiver may use blind detection to detect whether the control channel to the transmission of user data uplink or the downlink, and the scheme or MIMO scheme of beamforming is used for user data transmission, to select the correct modulation schemes and coding for demodulating and decoding the control channel.

In some embodiments, the control channels carry information relating to the transmission of user data. For example, this information may be an information management related dispatching, for example, the management information L1/L2. Accordingly, in this example, the control channel can also be called by control channels related to the dispatch or control channels L1/L2.

In yet another variant implementation, the control channel carries an indication of the resource user data, indication of the transport format of the user data and, optional�parameters information related to the retransmission Protocol used for transmitting user data. Alternative or optional, the control channel may also be a resource assignment for the user data and transmission parameters for uplink for user data and, optionally, information relating to the retransmission Protocol used for transmitting user data.

According to another embodiment of implementation, the control channels may carry information of the control channel related only to transmission in the downlink, information channel management related only to transmission on the uplink communication, or information of a control channel corresponding to transmission on the downlink and uplink.

Information on the control channel for the control channel can carry different types of information. For example, in the case where the control channels carry control information L1/L2, for example, information cat. 1, cat. 2, and, optionally, information cat. 3, different types of information carried by the control channel can be coded together.

In yet another variant implementation, the sending object may further transmit the control channels on the physical channel resource downlink. As indicated above, the receiving facility mho�et to carry out blind detection, at least a subset of physical resources, which displays the control channels (for example, on the physical resources on which tolerated a certain subset of the format information of the control channel). Thus, information available to the receiving object, the modulation schemes and coding associated with different formats of information of the control channel of the control channels, are used to limit the number of attempts of blind detection.

In addition, according to one illustrative embodiment of the, the number of bits of information on the control channel (or the format information of the control channel) control channel may be associated with one modulation scheme and encoding according to a preset configuration or according to the message configuration.

Illustrative species of this variant implementation, the preliminary configuration is achieved by sending a message to the higher level of the data channel to one or more receiving objects via a dedicated channel or shared channel. This message may prescribe appropriate receiving entity to perform a blind detection on only a subset of the physical resources, which displays the control channels, and/or on a subset of information formats� the control channel.

In alternative varieties embodiment, the configuration message may be, for example, a broadcast message transmitted on the broadcast channel for the indication to one or more receiving entities to perform a blind detection on only a subset of the physical resources, which displays the control channels, and/or on a subset of the format information of the control channel.

For example, the configuration message can be transmitted as a separate piece of control information over a separate control channel. In one illustrative implementation, the communication configuration and control channels are transmitted in each potcake or slot.

In yet another embodiment, one or more host objects may be prescribed to perform a blind detection on only a subset of the physical resources, which displays the control channels, and/or format information of the control channel, through pre-configuration and/or communications configuration.

Furthermore, in yet another variant implementation, the receiving object may be configured to blindly detect only a subset of the physical resources, which displays the control channels, and/or subsets of Fort�the ATA information of the control channel.

As indicated above, another aspect of the invention provides for more flexible configuration of control channels that do not lead in this case, for example, to excessively increase the required complexity of the mobile station, to reduce the flexibility of dispatching, etc. Accordingly, in yet another variant implementation, each format of the control channel is associated with the number N of modulation schemes and coding, where N>1. In this embodiment, modulation schemes and coding being applied to the control channels of the respective formats, respectively, to generate a given number of N different quantities of bits of coded information of the control channel and/or modulation symbols. In one illustrative embodiment, the implementation, the dimensions of the output are integer multiples of the smallest output size for ease of multiplexing control channels.

Accordingly, in the case of modulation schemes and coding for control channels, you can select one of the N modulation schemes and coding associated with the format of the control channel. This choice can be made, for example, on the basis of the geometry of the receiver in radiate or other parameters, for example, the intensity of the received signal, fading or frequency selectivity of the channel, the receiver type or available transmission power. The selected circuit module�tion and coding can be applied to information of the control channel for the control channel.

Another variant embodiment of the invention provides for mapping the control channels in different aggregation sizes, i.e. different number of modulation symbols or elements of the control channel. Bits of information of the control channel corresponding format of the control channel are displayed in at least one of a plurality of sizes of aggregation, in which each aggregation size is set by the number of modulation symbols or elements of the control channel.

Accordingly, in this display it is possible to consider additional constraints. For example, bits of information of the control channel corresponding format of the control channel can be displayed only on the size of the aggregation, which give the speed of encoding bits of information on the control channel that meet this criterion of reliability, for example, the desired maximum frequency of block errors. Additionally, or in order another example, bits of information of the control channel corresponding format of the control channel can also be displayed only on the size of the aggregation, which give the speed of encoding bits of information on the control channel above the minimum coding rate or below the maximum encoding speed. In another example, the size of aggregation differ from each other.

Another illustrative variant implemented�I provides system where to transfer, you can use different widths of strips. In these systems may be mainly, if the bits of information of the control channel in at least one format of the control channel will always be displayed in the same size of the aggregate or the same size of the aggregation, regardless of the bandwidth of the system.

In yet another embodiment of the invention, it is possible to configure a subset of the control channels for transferring control information associated with transmission of user data uplink, and a subset of control channels for transferring control information associated with the transfer of user data in the downlink. This may have the advantage that, for example, host objects, which only keep track of rooms downlink, may be required to process only the control channels that belong to the user data transmission in the downlink. Similarly, according to another embodiment of the implementation, you can configure a subset of the control channels for transferring control information for user data transmission with MIMO or in a particular MIMO mode.

In yet another embodiment, information of a control channel for the control channel contains identificato� format who can give the format information of the control channel corresponding to the control channel.

In alternative implementation, the information of the control channel for the control channel contains a format identifier that can give the format information of the control channel corresponding to the control channel, if for a given amount of bits of information on the control channel, there are multiple formats.

In addition, can be advantageously, if the control channels, which carry information on the control channel containing information MIMO is used, the modulation scheme and coding at a higher level (or just a higher encoding rate) than for the control channels, which carry information on the control channel, containing information of MIMO control.

In addition, can be advantageously, if the control channels, which carry information on the control channel, which contains more information MIMO is used, the modulation scheme and coding at a higher level (or just a higher encoding rate) than for the control channels, which carry information on the control channel containing less information MIMO control.

According to another embodiment of the invention, there is provided a base station for configuring multiple channels management in with�the mobile communication system. The base station may include transmitting the object applying to each control channel modulation scheme and coding associated with the format information of the control channel for the control channel, thereby respectively generating an equal number of bits of coded information of the control channel and/or modulation symbols for each control channel.

In some embodiments, the base station further comprises an encoder for encoding control information to the coding rate given by the modulation scheme and coding related to the format of the control channel, a modulator for modulating the coded control channels according to the modulation scheme, given by the modulation scheme and coding related to the format of the corresponding control channel, and a display unit for displaying the bits of coded information of the control channel or the modulation symbols of the control channels in the physical channel resource downlink for transmission.

According to variety variant implementation, the base station also includes a multiplexer for multiplexing the bits of coded information of a control channel for different control channels prior to their modulation by the modulator. Alternatively, the multiplexer may multiplex the bits of information channel� control for different control channels before encoding by the encoder.

According to another variant implementation is provided a base station which is able to exercise or participate in the implementation of the method steps to facilitate the blind detection of control channels according to one described herein in different embodiments and their variants.

According to another variant implementation is provided a mobile station for use in a mobile communication system. The mobile station may, for example, contain a receiver for receiving at least a subset of the plurality of control channels from a resource of the physical channel downlink, in which the control channels have different formats. Modulation scheme and coding associated with the format of the corresponding channel control applied to the corresponding control channel by the transmitting entity. In addition, the mobile station may include a processing unit for implementing blind detection of a subset of the control channels for the reconstruction of information on the control channel of the corresponding received control channel, in which modulation schemes and coding associated with different formats of information of the control channel of the control channels, are used to limit the number of attempts of blind detection.

In yet another variant implementation, the mobile with�ance uses the following means for a mobile station for implementing blind detection. The demultiplexing unit (demultiplexer) can be used to demultiplex a received signal of the respective received control channels to the modulation symbols. In addition, the mobile station may include a demodulator for demodulation of the modulation symbols in the values of the soft decision and build the code words consisting of a given number of bits of coded information of the control channel, and a decoder for decoding coded bits of information on the control channel (also called a code word) to get bits of information on the control channel. Thus, at least one of the demultiplexing unit, demodulator and decoder uses the information possessed by the mobile station, the modulation schemes and coding associated with different formats of information of the control channel of the control channels that are used to limit the number of attempts of blind detection.

The mobile station according to another illustrative embodiment of the invention is able to exercise or participate in the implementation of the method steps to facilitate the blind detection of the control channel according to one described herein of the various embodiments and their variants.

According to another embodiment of the invention, before�therein a mobile communication system for transmitting multiple channels of control having different formats. This system may contain the transmitting entity (e.g., described herein the base station) applying to each control channel modulation scheme and coding associated with the format information of the control channel for the control channel, thereby respectively generating an equal number of bits of coded information of the control channel and/or modulation symbols for each control channel, and at least one receiving object (for example, described herein is a mobile station for receiving the at least a subset of control channels.

Brief description of the drawings

Below follows a more detailed description of the invention with reference to the accompanying drawings. Similar or corresponding elements in the drawings are indicated in the same way.

Fig.1 is an illustrative data transmission to users in the OFDMA system in the local mode (LM) having a distributed mapping of alarm control L1/L2.

Fig.2 is an illustrative data transmission to users in the OFDMA system distributed mode (DM) having a distributed mapping of alarm control L1/L2.

Fig.3 is an illustrative grid resources of the slot structure of the OFDM channel according to 3GPP TS 36.211.

Fig.4 - illustrative grid resources podagra OFDM channel according to the embodiment of the invention.

Fig.5 is illustrative �reamer configuration of a control channel using a common modulation schemes and encoding for all control channels in the grid resources, shown in Fig.4.

Fig.6 and 7 are illustrative examples of the configuration of control channels in the grid resources, as shown in Fig.4, according to various illustrative embodiments of the invention.

Fig.8 and 9 - two illustrative patterns of information processing on the control channel for multiple control channels on the physical layer according to different embodiments of the invention.

Fig.10 in accordance with an illustrative variant implementation of the invention, the use of two different modulation schemes and coding with a common modulation scheme to equalize the number of bits of coded control information for the information of the control channel for control channels, where the information of the control channel has different formats.

Fig.11 in accordance with an illustrative variant implementation of the invention, the use of two different modulation schemes and coding to equalize the numbers of symbols of the modulation information of the control channel for control channels, where the information of the control channel has different formats.

Fig.12 in accordance with an illustrative variant implementation of the invention, the use of different modulation schemes and coding to equalize the numbers of symbols of the modulation information of the control channel of the control channels with two amounts of modulation symbols,where the information of the control channel has different formats.

Fig.13 in accordance with an illustrative variant implementation of the invention, the use of different modulation schemes and coding to equalize the numbers of symbols of the modulation information of the control channel for the control channel with two amounts of modulation symbols, where the information of the control channel has different formats, for example based on the information quality of the channel.

Fig.14 - several different formats of information of the control channel and displayed in the code block by means of modulation and coding according to an illustrative embodiment of the invention.

Fig.15 - several different formats of information of the control channel and display them in two different size of the code block by means of modulation and coding according to an illustrative embodiment of the invention.

Fig.16 is a mobile communication system according to one embodiment of the invention, which can implement the ideas of the invention.

Fig.17 is another illustrative variant implementation of the invention, where the formats of information of the control channel are displayed in different amounts of coded information of the control channel and/or modulation symbols depending on the format size.

Fig.18 is another illustrative variant implementation of the invention, where the formats of the control channel information� appear in different number of coded information of the control channel and/or modulation symbols depending on the format size and optionally, another parameter, for example, the quality of the channel.

Fig.19 - two illustrative grid resources podagra OFDM channel according to various embodiments of the invention, where in the left grid resources control channel are displayed in distributed mode and right in the grid resources, the control channel are displayed in the local mode the resources of the OFDM channel.

The implementation of the invention

Below are described various embodiments of the invention. For illustration purposes, most of the embodiments described in connection with (advanced) communication system UMTS according to SAE/LTE, discussed above in the section "prior art". Note that the invention can advantageously be used, for example, in connection with the mobile communication system, for example, the above-described communication system SAE/LTE, but the invention is not limited to use in this specific illustrative communications network.

The following description is based mainly on the structure of the channel downlink, explained in the section "prior art". In addition, in connection with the explanations given in the section "prior art", it may be assumed for illustrative purposes that the two (or more) of the slot form podcat, whereas the number of podkatov, in turn, forms a frame on the channel. Fig.4 shows illustrative grid re�ursov podagra OFDM channel according to the embodiment of the invention, which is used to illustrate the structure podagra intended for illustrative purposes in the most described here variants of implementation. As can be seen from Fig.4, it is assumed that the two slots form podcat in the time domain. For this reason, we can assume that podcat on channel OFDM downlink consists of two resource blocks in the time domain; and each resource block is formed by the given numbersubcarrier or subband in the frequency domain and the given numberof OFDM symbols in the time domain. In addition, the number of OFDM symbols or elements of the resource/modulation symbols on podckaji can be reserved for alarm management (for example, alarm management associated with scheduling for user data in the user data section podagra). According to option implementation, shown in Fig.4, for illustrative purposes it is assumed that the control channels are provided in the first three OFDM symbols podagra (i.e., in this example, the first three OFDM symbols of the first slot podagra). However, note that you can use other display control signals to physical resources in potcake.

As described in the section "prior art", the use of fixed schema modulation coding for control channels L1/L2 may be unfavorable, since the information of the control channel will be displayed in a different number of modulation symbols and, thus, use a different number of physical radio resources for transmission depending on the size information of the control channel. This illustrative scenario is shown in Fig.5 (note that different patterns of resource elements in the OFDM symbols associated with the control channel, are designed to illustrate the control channels for different users). According to Fig.5 for illustrative purposes, it is assumed that the first three OFDM symbol of a resource block reserved for control channels users. For this reason, depending on the size of the corresponding format information of the control channel, the number of physical resources (modulation symbols) for the respective control channels is variable. The disadvantage of this approach is that for a blind detection for the reception of control channels from a mobile station may have a very difficult receiver to mobile stations. This is due to the fact that the possible positions of the control channels to be decoded, depend on the formats of the control channel. Therefore, in this potcake, the receiver will need to blindly decode all possible combinations and the provisions of the formats of the control channel.

One of the main aspects� of the invention provides for the alignment size information of the control channel different formats with equal number of bits of coded information of the control channel, the modulation symbols and/or elements of the control channel (CCE) for each control channel (CCE corresponds to a given number of modulation symbols, which can alternatively be referred to as resource elements). Thus, the number of times of blind detection of control channels can be reduced, because the position of the control channels to physical resources may be known to the mobile stations (or there is at least a limited number of possible positions).

Alignment information of the control channel according to different formats, for example, be achieved using different modulation schemes and coding for different control channels depending on the format information of the control channel to the corresponding channel. If, for example, the modulation scheme for all the control channels are the same, this may indicate that the encoding rate of the encoder may be configured to output the same number of bits of coded information of the control channel for each control channel, the information of the control channel of each control channel is also mapped to an equal number of modulation symbols. If the modulation scheme is varied to control channels, encoding rate and modulation scheme can be selected for the corresponding format information of the control channel, whereby in�armacia channel control all of the control channels is displayed in the same number of modulation symbols or CCE.

Fig.6 shows an example of a possible configuration of control channel resources in the grid shown in Fig.4, according to an illustrative embodiment of the invention. According to Fig.5, different patterns of resource elements in the OFDM symbols associated with the control channel, illustrate the control channels of different users. Unlike Fig.5, the use of different modulation schemes and coding for control channels of different users according to the format information of the control channel of the respective channels allows to align the use of different physical resources of the control channels, i.e. all channels are displayed in one number of elements of the resource/modulation symbols (6 items resource/modulation symbols/CCE in the example of Fig.6).

This may facilitate blind detection of control channels on the receiver side, since the relative position of the channels in the frame is known at the receiver, thus, as a minimum, the number of available modulation schemes and coding for the different formats of information of the control channel is to be tested to find the corresponding modulation schemes and encoding and decoding of the corresponding control channel. As will be explained in more detail below, the number of times of blind detection can be further reduced, e.g., by additional�tion (pre -) configuration of the receivers. Thanks to the implementation according to this aspect of the invention, it is possible to ensure flexibility in using different modulation schemes and coding for signaling control, while at the same time, the number of times of blind detection of control channels can be limited to a number less than or equal to the number of different formats of information of the control channel. This differs from a potentially much larger number of attempts, if necessary, in a blind detection of the location of control channels to physical resources.

According to another aspect of the invention, provides a more flexible solution which allows to consider different geometries of mobile stations in a cell. Obviously, encoding rate for the control channel depends on the number of bits of information on the control channel to the given number of modulation symbols/resource elements and used modulation schemes. Accordingly, the encoding rate increases with the number of bits of information on the control channel, if the modulation scheme and the number of modulation symbols/elements of the resource are not changed. This, in turn, can give the coding rate for some control channels that is unrealistic in terms of their performance, for example for transmitting a control channel with a given frequency block error (BLER) to a mobile station on the border of honeycombs, �academies in conditions of high noise and/or low intensity of the received signal (mobile station low geometry).

Similarly to the above aspect, the size information of the control channel is aligned by means of modulation and/or encoding. However, in this illustrative aspect of the invention, the information of the control channel is aligned with one of the many numbers of bits of coded information of the control channel, the modulation symbols and/or CCE for each control channel. In some illustrative embodiments, the dimensions of the output are integer multiples of the smallest output size, allowing, for example, to simplify the multiplexing of control channels.

For this reason, for example, again, in the case of fixed modulation schemes for all of the control channels, the encoder can output the number of N1or N2bits of coded information of the control channel for all formats of information of the control channel carried by the control channels, which, in turn, are modulated in M1or M2the modulation symbols. Alternatively, if the modulation scheme is also changed, the encoder can choose the encoding speed so that N coded bits of the channel information is output to the modulator for each channel of the control, whereas the modulator may use different modulation schemes (for example, depending on the geometry of the mobile stations) to modulate N coded bits of info�data channel in M 1or M2the modulation symbols. For this reason, in one illustrative embodiment, a different number of coded bits, symbols, modulation, and/or CCE format information of the control channel is a multiple of the smallest number of coded information of the control channel, the modulation symbols and/or CCE (e.g., M2=n×M1where n is a positive integer) that may have an advantage, because it allows to simplify the multiplexing of control channels.

Additionally, this aspect of the invention may provide for additional restrictions. For example, you can require that the size of the output M1or M2the modulation symbols (also called aggregation sizes) correspond to 2nthe smallest size of output (where n is an integer, e.g.or). The size of the CCE can be set so that the smallest dimension of the channel output control was equal to one CCE, which corresponds to the case n=0 in the above example.

Fig.7 shows an example of one possible configuration of control channel resources in the grid shown in Fig.4, according to an illustrative embodiment of the invention, and used to illustrate additional aspects of the invention. According to Fig.5 and Fig.6, different templates elementalists in the OFDM symbols, associated with the control channel illustrate the control channels of different users. Instead of displaying information on the control channel in different formats in the same amount of coded information of the control channel and/or modulation symbols according to Fig.6, it is possible to define at least two different amounts of coded information of the control channel and/or modulation symbols. Accordingly, each of the format information of the control channel may be associated with the modulation scheme and coding, which displays the information of the control channel format to the first or second number of coded information of the control channel, the modulation symbols and/or CCE. Alternative or optional, at the least, some formats may be associated with two modulation schemes and coding to display information on the control channel format to the first or second number of coded information of the control channel and/or modulation symbols. According to Fig.7, it can be assumed for illustrative purposes that the information of the control channel is displayed in the three elements of the resource/symbol modulation or six elements of the resource/modulation symbols depending on various factors. These factors may include the geometry, the intensity of a received signal, a frequency and/or time selectivity of the channel for a mobile station (UE), �otoroy is intended information control.

Similarly, embodiments of the invention, considered according to Fig.6, this configuration of the control channels may still allow single-blind detection at the receivers. Although the complexity is slightly increased due to different amounts of coded information of the control channel and/or modulation symbols, which may display information on the control channel, the number of attempts is relatively small compared to testing all possible positions of the control channels to physical resources, when using the only known modulation schemes and coding for all of the control channels, since it is assumed that the number of different formats of information of the control channel is greater than the number specified dimensions of the control channel (modulation symbols).

Note that the position of the control channel of Fig.5, 6 and 7 show a logical representation of a display on the control channel in the modulation symbol, an element of the CCE resource or to visualize the size. The actual display of this control channel can be distributed in time and/or frequency domain, for example, at the level of the modulation symbols, elements of the resource or CCE.

The number of bits of coded information of the control channel, the modulation symbols and/or CCE, in which is shown the control channel, carrier� information management of a defined format, through the modulation and encoding, for example, may depend on one or more different parameters.

For example, formats that have a size exceeding a certain threshold number of bits of control information that can be displayed in a larger number of coded information of the control channel, the modulation symbols and/or CCE than formats with a size of less than or equal to the threshold number of bits of control information. This may be of advantage in cases where the size of the formats of management information varies greatly, since this can guarantee a certain degree of reliability alarm management and/or maintaining an acceptable level of spectral efficiency. Illustrative variant implementation is shown in Fig.17.

Optionally or alternatively, another criterion for deciding which of the available quantities of coded information of the control channel, the modulation symbols and/or CCE is subject to display information on the control channel for the control channel (i.e. user or group of users, respectively), may also depend on the geometry of the user(s). For example, in the case of low channel quality of the user (for example, measured by the signal-to-noise ratio (SNR), signal-to-interference (SIR), signal-to-interference plus noise (SINR), etc.) (e.g.�EP, below the threshold) and large size format of the control channel for that user in comparison with other formats, modulation scheme and coding with high spectral efficiency, likely associated with the format information of the control channel display control channel in a given amount of coded information of the control channel and/or modulation symbols. However, in view of the geometry of a user in a cell, the modulation scheme and coding may not provide the desired frequency of bit error for the information of the control channel. This alternative or optional criterion and the resulting display of information on the control channel in different formats in different sizes illustrative code block shown in Fig.18.

In the two following tables (Tables 3 and 4) examples of different sizes of information on the control channel and the resulting velocity encoding, and for illustrative purposes it is assumed that the control channels are transmitted with QPSK modulation. In the examples, it is also assumed for illustrative purposes that the size of the encoded control channel (dimensions of aggregation) that are specified in the modulation symbols (resource elements (RE)) or CCE, 8, 4 or 2 times the smallest dimension (the rightmost column, 1 KO). In table 3 it is assumed that the CCE consists of 36 RE, i.e. the smallest size to�rovannogo control channel (the size of the CCE aggregation) is $ 36 RE 1 or CCE. In table 4 it is assumed that the CCE consists of 24 RE, i.e. the smallest size of the encoded control channel (the size of the CCE aggregation) is 24 RE 1 or CCE.

Note that the size information of the control channel may represent different formats of the control channel, for example, information of a control channel of size 1 may, for example, correspond to the allocation of downlink without MIMO and uplink without MIMO or multi-user MIMO allocation uplink, and information on the control channel of size 4 may fit the single-player allocation of MIMO downlink with 1 codeword allocation and multiuser MIMO downlink. The encoding speed can be calculated by the formula:

speedencoding=bitsinformationchannelmanagementbitsencodedchannelmanagement=bitsinformationchannelmanagementthe number REnumberbitsin RE I.e., for example, encoding rate for the size 2 format information of the control channel (CCI), using 4 CCE (according to Table 3, i.e. 36 RE on CCE and QPSK modulation) is calculated as follows:

CKopoCtbKodandpoinanandI(pazmep2,4CCE)=38144RE2bandtaRE=0,13

In both the following tables are for illustrative purposes it is assumed that the coding rate QPSK, smaller, such as 0.10, is not required because the encoding rate, such as 0.10 sufficient to achieve the UE at the cell border. Similarly, the coding rate, exceeding, for example, 0,80, are not required because, for example, the decoding performance (achievable BLER) is impossible, because the minimum level decoding errors). For this reason, the shaded areas in the tables indicate that the size information to�cash management does not appear in the corresponding size of the encoded control channel.

By analogy with the above Tables 3 and 4, the Table 5 it is also assumed for illustrative purposes QPSK modulation information of the control channel of the CCI. Unlike the above Tables 3 and 4, table 5 shows the case when you have different formats of the control channel (see column “Format”), and some of the available formats carry the same number of bits of information on the control channel, i.e. have the same size information of the control channel. Similar to the example provided above in Tables 3 and 4, it can be assumed that the coding rate is below or above this threshold are not used. In addition, as can be seen, for example, in lines (Size 2, 3), (Size 4, Format 6) or (Size 4, Format 7), display in a defined size of the CCE aggregation may be prohibited. For example, such a limitation of displaying only a subset of the available size of the CCE aggregation is possible if, for example, only a specific coding rate to transmit information of the control channel in this format is necessary to ensure the desired degree of reliability of transmission, for example, due to the need to align with a given BLER for the UES at the cell border (the lower limit velocity encoding) or to avoid a minimum level oshie�Ki decode (restriction of higher rate encoding). Taking into account combinations (Size 5, 8 Format), control data on the control channel may require, for example, a high level of protection, which is used only encoding rate of 0.15, i.e. CCI format of the control channel is always displayed in 8 CCE.

Limit the allowed size of the CCE aggregation for data formats can also help reduce the number of blind detections required for UE. For example, if the UE is required to decode the format 7 (but not formats 5 and 6), it needs to perform blind decoding on only 2 the size of the CCE aggregation (4, 2 CCE), and not at all the size of the CCE aggregation. If the UE is required to decode the formats 6 and 7 (but not 5), he still needs to perform blind decoding on 4 and 2 CCE. If the UE is required to decode the formats 5, 6 and 7, it will require a blind decoding of 8, 4 and 2 CCE.

As will be discussed in more detail below, the formats of information of the control channel corresponding format of the control channel can optionally include an identifier that allows the receiving entity to distinguish between different formats.

In one illustrative embodiment, the implementation, the different formats of the control channel is defined in 3GPP Tdoc. R1-074906, “PDCCH payload formats, sizes and CCE aggregation”, 3GPP TSG-RAN WG1 Meeting #51, November 2007 (available at http://www.3gpp.org and included in this OPI�C as reference):

Format 1: purpose uplink (UL)

Format 2: assign downlink without MIMO compact DL assignment) (DL-C)

Format 3: assigning a single-user MIMO downlink (1 code word) (DL-SU1)

Format 4: assigning a single-user MIMO downlink (2 code words) (DL-SU2)

Format 5: appointment of multiuser MIMO downlink (DL-MU)

Format 6: appointment explode downlink with beamforming or transmission in open loop (DL-BF/OLT)

In this illustrative variant implementation, you can apply the following mechanisms:

- MIMO formats (Formats 3, 4 and 5) is preferably applied to the mobile stations (UE) in a high geometry (near the center of the cell /under conditions of only a small noise), this means that these formats are preferable to transmit with higher speed encoding, i.e. the transmission of low-speed encoding is not required

format without MIMO and format of the UL (Formats 1 and 2) can be applied to all UE in the system, for example, needed to cover at the border of a cell and is necessary for the UE in the center of the cell without MIMO transmission, i.e., these formats can be transferred in a wide range of speeds encoding

Format 6 may not be required or may rarely be required for UE in the center of the cell and, hence�, it is preferable to transmit low-speed encoding.

Depending on the size information of the control channel corresponding format this will lead to different size of the CCE aggregation. Display example corresponding to the size information of the control channel and formats shown in the following table 6 (although the SU2 Format must be transmitted displayed at high speed encoding, there may be a limit on the smallest permissible encoding rate, as noted above, due to the minimal error level):

When working with different formats of the control channel having the same size information of the control channel, thus removing the advantage of the possibility of having two or more different quantities of coded information of the control channel and/or modulation symbols (CCE) for the corresponding format information of the control channel associated with the modulation schemes and coding different spectral efficiency, which allows also to take into account the geometry of the user.

The choice of the number of coded information of the control channel and/or modulation symbols, which are subject to display information on the control channel format, you can optionally or alternatively be implemented, for example, on the basis �other parameters for example, the intensity of the received signal of the control channels, fading or frequency selectivity of the channel downlink, the available transmit power, or just the receiver type.

note that, in General, the control channels can, for example, contain the information management related to dispatching, i.e., the control channel can also be called by control channels associated with traffic control. In some illustrative embodiments, the control channels are control channels L1/L2 for supply users (mobile stations) management information L1/L2, associated with the data transmission on uplink and/or downlink, the shared channel. In some illustrative embodiments, each control channel contains information on the control channel L1/L2 associated with data transmission via uplink and/or downlink, the shared channel to/from a particular user/mobile station. Alternative or optional, the control channel may optionally also carry information associated with a search call, or information associated with a response to the procedure (random) access uplink.

Fig.8 shows an illustrative structure of an information processing channel control�need for multiple control channels on the physical layer according to the embodiment of the invention. For illustrative purposes only, shows the processing of two control channels (of course, in real systems can exist normally for more than two control channels provided in potcake). In addition, although not shown in Fig.8, may be a unit speed negotiation between block coding and modulator for adapting the coding rate block encoding to the desired coding rate (e.g., by puncturing or repetition).

Each information of the control channel has a specific format (or structure), i.e., the management information may contain different fields and options. In one embodiment, the implementation, the management information may have the formats shown in Fig.14, Fig.15 and in Table 14 or table 1 and table 2 in the section "prior art". Due to the different formats, we can also assume that every format information of the control channel has a particular size, expressed in number of bits.

Another variant implementation of the invention involves the design of a communication scheme for the control channels for LTE design that is not dependent on the bandwidth of the system. This design is the bandwidth of the illustrative system shown below in table 7 (see also the above-mentioned 3GPP Tdoc. R1-074906):

Table 7
BW1.4 MHzThe 1.6 MHz3 MHzA 3.2 MHz5 MHz10 MHz15 MHz20 MHz22 MHz
RB671516255075100110
The payload size 1
[35 bits]
UL
DL-BF/OLT
DL-SU1
UL
DL-BF/OLT
The size of the payload 2
[39 bit]
DL-SU1UL
DL-BF/OLT
DL-SU1
UL
DL-BF/OLT
UL
DL-C
The size of the payload 3
[43 bit]
DL-MU
DL-SU2
DL-MU
DL-SU2
DL-SU1DL-BF/OLTUL
DL-C
UL
DL-C
UL
DL-C
UL
DL-C
The payload size 4
[49 bit]
DL-MU
DL-SU2
DL-MU
DL-SU2
DL-SU1
DL-MU
DL-BF/OLT
DL-SU1
DL-BF/OLT
The size of the payload 5
[56 bits]
DL-SU2DL-MU
DL-SU2
DL-SU1
DL-MU
DL-SU2
DL-BF/OLT
The payload size 6
[65 bit]
DL-SU1
DL-MU
DL-SU2
DL-BF/OLT
DL-SU1
DL-MU
DL-SU2

As can be seen from table 7, this format (e.g. the format of the DL-C) has a different size information of the control channel depending on the bandwidth of the system. This is due to the field of allocation of resource blocks (RB), which depends on the bandwidth of the system, resulting in different formats, for example, the format of the UL (or DL Format-C) and the format of the DL-SU2 having different sizes for the same bandwidth of the system have the same size information of the control channel for different bandwidths of the system. For example, for bandwidths of 10 MHz (50 RB) or more, the format of the UL (or DL Format-C) is displayed on size 3 (payload) size information of the control channel. The same size is used for the format of the DL-SU2 (and also the format of the DL-MU) for bandwidths of system 1.4 and 1.6 MHz.

Similarly, the format of the DL-SU2 (and also the format of the DL-MU) for bandwidths of system 3.0 and 3.2 MHz is displayed on a size 4 payload, which is also used for the format of the DL-BF/OLT for bandwidths of 10 and 15 MHz.

Additionally, the format of the DL-SU2 for band width of the system from 5 to 15 MHz is displayed on the payload size 5, which is also used for the format of the DL-BF/OLT to the bandwidth of the system is 20 MHz.

Applying the principles set�introduced in table 5 and 6 (formats, displayed at the same size, appear in different sizes CCE aggregation) for different bandwidths of the system, for example, you can set the display according to the following table 8.

In yet another embodiment, the size of the CCE may depend on the bandwidth of the system, and the size usually increases with increasing bandwidth of the system. Examples are shown in tables 9 and 10. The use of numerology CCE from table 9 to the formats and the size of the CCE aggregation from table 8 gives a different coding rate, as shown in table 11. As you can see, for example, to format DL-SU2, the same size of the CCE aggregation (2 and 4) are used for this format in all the widths of the bands of the system. This feature can simplify the base station and UE in the sense that the blind detection of the format of the control channel is facilitated by a limited number of size of the CCE aggregation, which may display format.

Table 9
BW1.4 MHzThe 1.6 MHz3 MHzA 3.2 MHz5 MHz10 MHz15 MHz 20 MHz22 MHz
RB671516255075100110
size CCE [RE]242424242436363636

Table 10
BW1.4 MHzThe 1.6 MHz3 MHzA 3.2 MHz5 MHz10 MHz15 MHz20 MHz22 MHz
RB671516255075 100110
size CCE [RE]161620202436364848

Table 12 shows another example of the use of numerology CCE from table 10 to the formats and the size of the CCE aggregation table 8.

With regard to the processing information of the control channel of the transmitting object information of the control channel of the corresponding first control channel is subjected to the coding and modulation by the encoder and modulator. The encoder encodes the information of a control channel in a given coding rate (e.g., in the range of 0,1 to 1). Different encoding speed can be generated, for example, by puncturing or repetition of the output bits of the encoder with a given source encoding rates. The coded bits (also called encoded information of the control channel) is then subjected to a modulation in the modulator. The modulator receives the groups of encoded bits (the so-called code words) or forms a code word of input encoded bits. Each Kodo�second word is then displayed by the modulator in the modulation symbol. The number of coded bits of the codeword, thus, depends on the level modulation schemes (forM-bit code words need a modulation scheme with 2Mdifferent modulation symbols). For example, the modulator may use a modulation scheme BPSK, QPSK, 16QAM, 64QAM, etc. the Modulator outputs the modulation symbols. For example, the modulation symbols are formed by in-phase and quadrature components in the plane I-Q.

As explained above, each format information of the control channel may be associated with at least one modulation scheme and coding. The modulation scheme and coding typically contains the encoding rate used by the encoder and the modulation scheme used by the modulator. The scheme(s) of modulation and coding associated(s) with corresponding format information of the control channel are selected to align the size information of the control channel different formats with an equal number (or equal numbers) bits of coded information of the control channel and/or modulation symbols for each control channel.

For this reason, in this example, modulators, modulating the coded bits of the two channels of control output is equal to the number of modulation symbols. The modulation symbols may then multiplicious multiplexer and processed by the OFDM modulation section that outputs OFDM symbols. These OFD symbols carry the information of the control channels and resources are displayed in the physical channel, for example, as shown in Fig.4, for transmission.

On the receiver side (here, the mobile stations corresponding one of the OFDM symbols back displays of physical channel resources in time and is fed to the OFDM demodulation section that demodulates the OFDM symbols to obtain a plurality of modulation symbols. The demultiplexer demultiplexes the modulation symbols and, thus, tries to restore individual control channels. Demuxed the modulation symbols of the corresponding control channel is then fed to the demodulator, which demodulates the symbols to generate a sequence of codewords. These code words are received at the decoder, which attempts to recover the information of the control channel corresponding to the control channel.

In this illustrative embodiment, the implementation assumes that the modulation scheme and coding for control channels is not known to the host objects (with the exception of host objects, which is a known relationship between the modulation schemes and coding and appropriate formats of the control channel, but not the actual formats of information of the control channel of the channels). For this reason, the receiving entity may perform blind detection of modulation schemes and coding control channels. Note that, in General, with�line embodiment of the invention, certain parameters used for OFDM demodulation, demultiplexing, demodulation and decoding, can be known to the receiving object, for example, due to (pre -) configuration; however, not all parameters necessary for the conversion processing of the physical layer, so some stages of processing physical channel to the receiver is necessary to find suitable parameters by trial and error, i.e., the blind detection.

One example of blind detection is that the receiver (mobile station) demodulates the received signal and attempts to decode the control channels using one of a variety of modulation schemes and coding that were specified for the format information of the control channel. The mechanism of blind detection for use in one embodiment of the invention similar to that described in section 4.3.1 and Annex A to 3GPP TR 25.212: "Multiplexing and channel coding (FDD)", release 7, version 7.1.0, June 2006 and in 3GPP TSG-RAN WG1 #44 R1-060450, "Further details on HS-SCCH-less operation for VoIP traffic", February 2006 or 3GPP TSG-RAN WG1 #44bis R1-060944 "Further Evaluation of HS-SCCH-less operation", March 2006 (all three documents are available at the address http://www.3gpp.org and incorporated herein by reference).

Fig.9 shows another illustrative structure of information processing on the control channel for multiple control channels on the f�man's physical level according to the embodiment of the invention. In essence, provided the same processing steps for the control channels, and Fig.8.

First, information on the control channel for all relevant control channels individually coded by means of the encoder (block coding). By analogy with Fig.8, may be a unit speed negotiation between block coding and modulator for adapting the coding rate block encoding to the desired coding rate (e.g., by puncturing or repetition). Unlike the processing of the physical layer in Fig.8, the coded bits of the channels output by the encoding are multiplexed in this embodiment, the implementation, and the multiplexed encoded bits of control channel subjected to a modulation by the modulation unit. For this reason, in this illustrative variant implementation, the modulation scheme for all the control channels are the same. Accordingly, to align the size information of the control channel different formats, encoding rate, the modulation scheme and coding associated with the corresponding control channel should be selected so that the block encoding deduced an equal amount of coded information of the control channel for all control channels. (Thanks to the use of the same modulation schemes for all of the control channels in this example, the modulation encoding�bathrooms bits of each control channel also leads, thus, it is equal to the number of modulation symbols/resource items for each control channel).

The modulation symbols for control channels output from the modulation unit, are subjected to OFDM modulation and mapping to the physical channel as explained above according to Fig.8. Accordingly, the reverse processing on the receiver side, similar to that described with reference to Fig.8, except that the demodulation symbols provides a stream containing code words all of the control channels, which need to demux for receiving code words corresponding control channels. On code words of the respective control channels been tried decoding to recover information on the control channel for all of the respective control channels.

Alternatively, the multiplexing at the transmitter can also be performed after modulation. Accordingly, the receiver must also be capable of demultiplexing to decode. In addition, in another embodiment, the transmitter can be optional stages to display in a physical channel, for example, scrambling, interleaving, etc. Similar measures on the treatment effect of the respective phases shall be provided, respectively, to the receiver. In addition,in the event that when the control channels are displayed in CCE, can be provided optionally, the steps associated with displaying in CCE and multiplexing at the transmitter, and corresponding stages (demultiplexing and removal of display) on the receiver.

Fig.10 shows, in accordance with an illustrative variant implementation of the invention, the use of two different modulation schemes and coding with a common modulation scheme, to equalize the number of bits of coded control information for the information of the control channel for control channels, where the information of the control channel has different formats. In this example, for illustrative purposes we consider two different formats of information of the control channel format 1 and format 2, with different sizes. It is assumed that a format 1 control channel for a first control channel has a size of 12 bits, and a format 2 control channel for a second control channel has a size of 18 bits. (Note that the above table 1, table 2 and table 3, and figs.14 and Fig.15 it follows that in a real implementation, the formats of information of the control channel usually have more than they are quite a small number of bits, and that variants of implementation, described according to Fig.10-Fig.13, should be regarded as an illustration of the idea). The size of the two different formats of information of the control channel needs �be aligned in this example. To this end, each of the two formats is associated with a modulation scheme and coding. Format 1 is associated with a modulation scheme and encoding {encoding rate: 1/3; modulation scheme: 16QAM} and Format 2 is associated with the modulation scheme and encoding {encoding rate: 1/3; modulation scheme: 16QAM}. Accordingly, the modulation scheme of the control channels can, for example, pre-configured in this example. For this reason, to align the size information of the control channel, encoding rate corresponding to modulation schemes and coding for format 1 and format 2 was chosen so that the encoding was equal to the number of coded bits. 12 bits format 1 is encoded at the coding rate of 1/3, resulting in a 36 coded bits. Similarly, 18 bits format 2 is encoded at the coding rate of½, the result of which is also obtained 36 coded bits.

Because you are using 16QAM modulation, when the modulation code words of 4 bits are displayed in a single modulation symbol. For this reason, in this example, when the modulation 36 coded bits of the respective control channels, turns 9 modulation symbols for each control channel. Note that it is possible, of course, include more than two control channels for transmission in a given time, and that you can also provide more d�wow format information of the control channel. Accordingly, it is necessary to provide a modulation scheme and coding for each format information of the control channel (assuming that the formats are different in size).

In yet another embodiment, at least two of the format information of the control channel of the possible formats of information of the control channel have the same size. Accordingly, to display these at least two pieces of data control channel in an equal number of coded bits or symbols of the modulation, it is necessary to ensure that the modulation schemes and coding for these formats of equal size differed from each other.

If one parameter modulation schemes to be used for all formats (for example, a common modulation scheme to be used for all control channels regardless of format), the same modulation scheme and coding will be used for these formats of information of the control channel of equal size. For this reason, to still be able to identify the correct format of the control channel, in yet another variant implementation, the receivers can decode the information of the control channel and can compare the resulting information of the control channel formats of equal size to identify the correct format. Alternatively, in another�nom variant of implementation, may advantageously include a format identifier (for example, the format information of the control channel) information in the control channel or the encoded bits (by the encoder) to uniquely identify the format information of the control channel. Note that the format identifier of the control channel can also be used by default, i.e. no matter whether the formats of the control channel of equal size, or different if the number of coded bits or modulation symbols are displayed formats of information of the control channel.

If all formats of information of the control channel are different sizes (measured in number of bits) modulation scheme and coding for the relevant formats will all be different, so the ID is not required.

Additionally, the selected formats of information of the control channel can be the same size, however, the mobile station may not need to decode all formats. Instead, the mobile station can use only one of them. In this case, the format identifier is not required. It can be implemented, for example, by pre-configuring a mobile station (UE) to receive only the control channels for single-user MIMO mode downlink. Accordingly, the mobile station does not need to�about to decode other formats for example, without MIMO or multi-user MIMO. Thus, even if the formats are the same size, the mobile station only needs to know how to interpret the contents of the control channel, and in this case does not require the format ID.

Alternatively, if different formats of information of the control channel have the same size, they can be displayed on the exceptional size of the CCE aggregation. In this case, the format identifier also may not be required, since the format is known from the size of the CCE aggregation. It is illustrative shown in table 13.

Alternative or optionally, in another embodiment of the invention, different formats of the control channel can also be distinguished by applying different schemes interleave and/or scrambling of information in the control channel, depending on the appropriate format of the control channel. For example, each of the different formats of the control channel may be associated with different schemes interleave data for the information of the control channel. Additionally, there is a unique mapping between the format of the control channel and the corresponding scheme of alternation, i.e., the formats of the control channel may be associated with mutually different patterns of alternation.

Similarly, different scramblers codes can,�reamer, to apply to information of the control channel, and applicable scramblase code is selected based on the format of the control channel for the information of the control channel. Optionally, you can provide a unique mapping between the format of a control channel and corresponding scramblers code, i.e., the formats of the control channel may be associated with mutually different skremblirovanie codes.

Note that the selected(th) interleave scheme or scramblase code may additionally depend on other parameters, for example, the size of the CCE aggregation, the cell identity (cell ID), radiosity where the mobile station (UE) and/or mobile station identifier (UE ID).

Furthermore, note that according to one illustrative embodiment of the invention, different patterns of alternation are obtained using the same interleave algorithm, the algorithm is initiated with different values of the initialization parameter.

Similarly, different scramblers codes can, for example, be generated using a General algorithm to generate scramblers codes and initialization of this algorithm with different values of the initialization parameter depending on the format of the control channel.

Fig.11 shows, in accordance with an illustrative variant implementation of the invention, used�e two different modulation schemes and coding to equalize the numbers of symbols of the modulation information of the control channel for the control channels, where information on the control channel has different formats and sizes. In this illustrative variant implementation, the modulation scheme for different formats is not set in advance. Accordingly, is not required (but still possible) that the number of coded bits for different formats match.

In this illustrative version of the implementation, again, we considered two different formats of the control channel format 1 and format 2, for illustrative purposes. Format 1 control channel associated with the modulation scheme and encoding {encoding rate: 1/3; modulation scheme: 16QAM}, and the 2 format information of the control channel is associated with a modulation scheme {encoding rate: 1/2; modulation scheme: QPSK}.

Accordingly, 12 bits format 1 first encoded at ½ speed, resulting in a 36 coded bits. Then, these encoded bits are subjected to 16QAM modulation (size code word: 4 bits) to obtain 9 modulation symbols. Similarly, 9 bit format 2 is encoded at ½ speed, resulting in 18 coded bits. These coded bits are QPSK (size code word: 2 bits), resulting in 9 is also obtained modulation symbols, as for format 1.

Thus, in Fig.10 and Fig.11 shows an illustrative stage of coding and modulation in the processing of the control channels on the physical Uro�not, it is shown, for example, Fig.8. Although in the example of Fig.10 the number of coded bits matches one of the number of coded bits for all formats of the control channel of Fig.11 shows an example where the number of modulation symbols for all formats of information of the control channel are the same.

As indicated above, another aspect of the invention relates to a more flexible configuration of channel control, which can facilitate blind detection of control channels to physical resources for downlink without further complications of host objects.

Fig.12 shows, in accordance with an illustrative variant implementation of the invention, the use of different modulation schemes and coding to equalize the numbers of symbols of the modulation information of the control channel of the control channels with two amounts of modulation symbols, where the information of the control channel has different formats. In this illustrative variant implementation, for illustrative purposes, there are three different formats of information of the control channel of a different size. It is assumed that the 1 format information of the control channel has a size of 12 bits and is associated with the modulation scheme and encoding {encoding rate: 1/3; modulation scheme: 16QAM}. It is assumed that the 2 format information of the control channel has a size of 9 bits and is associated with schemes�th modulation and encoding {encoding rate: 1/2; the modulation scheme: QPSK}. It is assumed that the 3 format information of the control channel has a size of 18 bits and is associated with the modulation scheme and encoding {encoding rate: 1/2; modulation scheme: QPSK}. For this reason, format 2 and format 3 are associated with the same modulation scheme and coding, but the resulting number of modulation symbols will be different due to different sizes of the two formats.

In the case of scheme 1 to modulation and coding format and format 2 corresponding to information of the control channel, 9 modulation symbols will for formats 1 and 2 information on the control channel. For format 3 information on the control channel, encoding 18 bits at a coding rate of 1/2 gives 36 coded bits, and subsequent modulation QPSK 18 generates modulation symbols. For this reason, in this illustrative embodiment, the implementation, the use of modulation schemes and coding associated with different formats of information of the control channel, information of a control channel for control channels leads to the generation of 9 modulation symbols or 18 characters modulation.

As explained above, there may be various reasons for the generation of two different amounts of modulation symbols (or coded bits) for different formats of the control channel. One reason may be that for generation 9 of modulation symbols d�I format 3, requires a modulation scheme with high spectral efficiency (for example, {encoding rate: 1/2; modulation scheme: 16QAM}). However, this modulation scheme and coding may be too unreliable to transport information of the control channel (for example, due to channel conditions) or may be a modulation scheme and coding, which is simply not allowed for use with alarm control, so you cannot use it. For this reason, you can specify a second number of coded bits or modulation symbols, which may be agreed upon information on the control channel.

Although in Fig.12 it is assumed that different formats of information of the control channel are assigned the same modulation scheme and coding, in yet another variant implementation, the different formats of information of the control channel can be assigned to two (or more) modulation schemes and coding, thereby selectively different, but the data/known number of coded bits or modulation symbols may be generated for all formats of information of the control channel. For example, the system can be set to three the number of modulation symbols, denoted by M1, M2and M3. Accordingly, different formats of information of the control channel can be assigned at least one and a maximum of up to three different�x modulation schemes and coding to display information on the control channel of the respective formats into one or a combination of M 1, M2and M3the modulation symbols. For example, format 1 may be associated with the two schemes modulation and coding displaying the information management of this format in M1or M2symbols of the modulation format 2 may be associated with three modulation schemes and coding displaying the information management of this format in M1, M2or M3of modulation symbols, and format 3 may be associated with the two schemes modulation and coding displaying the information management of this format in M2or M3the modulation symbols. In one embodiment, the implementation, the number of M1, M2and M3you can choose so that (provided that M1is the smallest number M2=n×M1and M3=m×M1(n and m are different positive integers). CCE may be defined as a set of M1of modulation symbols, and therefore, aggregation of n (m) CCE will give M2(M3) modulation symbols. Alternatively, the size of the CCE can be set so that M1the modulation symbols asked k CCE, so the aggregation of k×n (k×m) CCE will give M2(M3) modulation symbols.

This flexible assignment of different numbers of coded bits or modulation symbols that can be aligned in different formats of information of the control channel, allows the use of adaptive modulation and coding for �anals of management, so, for example, to respond to changing channel conditions, as will be explained later referring to Fig.13. Fig.13 shows, in accordance with an illustrative variant implementation of the invention, the use of different modulation schemes and coding to equalize the numbers of symbols of the modulation information of the control channel for the control channel with two amounts of modulation symbols (CCE), where information on the control channel has different formats. The decision as to whether to display the information of the control channel in the first number of modulation symbols or the second number of modulation symbols may be based on, for example, channel quality or geometry of the user for whom information on the control channel is transmitted, as mentioned above. Another option to such solutions can also be the format information of the control channel, which is displayed in the size information of the control channel. For example, in this embodiment of the invention, two (or more) modulation schemes can be set for the format of the control channel. Depending on the channel quality of a physical channel downlink carrying control channels, can be selected, respectively, one of the schemes modulation and coding formats. For example, if the channel quality is below a certain threshold value, the modulation scheme and code�of duplication can be used for the information of the control channel format which provides a lower spectral efficiency/data transfer rate than the second modulation scheme and coding for the information of the control channel format which is used, if the channel quality is above or equal to the threshold level. In yet another embodiment, adaptive modulation and coding and power control can be applied to the control channels L1/L2, i.e. alarm control L1/L2 to the mobile station that is located near the center of the cell (high geometry/SINR) must be transmitted with low power and/or high MCS level (smaller number of modulation symbols or CCE), whereas alarm control L1/L2 on the MS, located near the border of a cell (low geometry/SINR) to be transmitted at high power level and/or low MCS level (a large number of modulation symbols or CCE).

Accordingly, if more than two modulation schemes and coding, i.e. N schemes modulation and coding set to the proper format, you can specify N-1 thresholds to distinguish different ranges of level of quality of the channel, which are subject to different modulation schemes and coding. Also, it may be advantageous to choose the level of modulation scheme and coding is directly proportional to the quality of the channel, i.e., to select a modulation scheme and coding more neskoromny (i.e. providing a lower data rate/spectral efficiency) for low quality of the channel and the modulation scheme and coding at a higher level (i.e., providing a higher data rate/spectral efficiency) for a higher quality channel.

Fig.14 shows several different formats of information of the control channel and displayed in the code block by means of modulation and coding according to an illustrative embodiment of the invention. Fig.14 shows six different illustrative formats of information of the control channel. In General, it should be understood that the portion of information of the control channel can be seen as a pointer to the location of the data block containing user data for an individual user in terms of data podagra (or several consecutive podkatov). In other words, the control data may indicate the user is assigned(s) whether a mobile station (user) and, if Yes, which one(s), block(and) resources which transport format (adaptation of the communication line is used to transmit user data destined for a mobile station, etc.

According to some embodiments of the invention, the structure or format of the information transferred to the control channels, mo�but divided into categories: information management for General use (SCI) and dedicated control information (DCI).

Part SCI signaling control information may include information associated with resource allocation (also referred to as information cat. 1). Part SCI may contain a user identifier (UE ID field that identifies the user (or user group), which allocates resource allocation information of RB, indicating the resources (block(and) resources) allocated to a user. Field resources can specify the block(s) of the resources allocated for the user data transmission on the uplink connection on the data channel uplink or alternatively, the block(and) resources subject to(e) used for user data transmission in the downlink to the corresponding mobile station or group of mobile stations identified by the ID field UE on the shared channel downlink (for example, the shared channel downlink (DSCH) for SAE/LTE). The number of resource blocks allocated to the user may be dynamic. In addition, SCI may additionally include an indication of the duration of the appointment, if the appointment is for multiple podkatom (or TTI) is possible in the system.

Part of the DCI signaling control information may include information associated with a transmission format (also known as information cat. 2) data transmitted to the scheduled user (s�the tel, specified information cat. 1. In addition, in the case of (mixed) ARQ, DCI may also carry information associated with the retransmission Protocol, (also known as information cat. 3), for example, information (H)ARQ. DCI needs to decode only the users are scheduled according to the cat. 1.

Information cat. 2 in DCI may, for example, contain information about at least one of the modulation schemes, the size (or coding rate) of the transport block (payload), information associated with MIMO, etc. Information cat. 3 may contain the information associated with HARQ, for example, the process number of a mixed ARQ, version with redundancy, the sequence number retransmission. Note that either the size of the transport block (payload size) or encoding rate can be signaled in information cat. 2. In any case, the size of the payload and encoding rate can be calculated from each other using the information of the modulation scheme and information resource (the number of allocated resource blocks).

In the case when the MIMO scheme is used or to be used for transmission of user data, you may need to provide several information elements in the information of the control channel for each of the MIMO streams. Accordingly, some information elements�s can provide several times in the illustrative control information L1/L2, for example, for each stream MIMO. In addition, there is a possibility that some of the various parameters (e.g., payload size, modulation scheme, etc.) shall use all or a subset of MIMO streams.

The first illustrative format shown in Fig.14, it is a simple format information of the control channel, which can be used on control channels for users that are not using any special MIMO scheme (e.g., SISO - single input, single output, or simple schemes explode transmission and/or reception that do not require additional information associated with the antenna). This format may, for example, contain only the information of RB allocation, user identification(s) for which(s) is the management information (e.g., via UE ID field or by implicit identification, for example, CRC-dependent UE), the size of the payload (respectively transport format, as explained above), the data modulation scheme and HARQ.

The second illustrative format can be used, for example, for transmission of user data using the MIMO scheme. By analogy with the first format shown in Fig.14, this format also contains information RB allocation, user identification(s) for which(s) is the management information, the size of the payload (resp�tstone transport format), information of the modulation scheme and HARQ. In addition, the format may further include information elements, including the number of MIMO streams and information pre-coding (for example, the number of MIMO streams and the vector of pre-coding or the index value indicating a pre-configured vector pre-encoding). As only one of a plurality of information items associated with the size of the payload information of the modulation scheme and HARQ, it may mean that all of the threads specified in the number of threads that use the same payload size and modulation scheme, and that all threads can be processed in a single HARQ process. Alternatively, the payload size, modulation scheme, etc. configure only a subset (e.g., one) from multiple threads, and the additional streams are transmitted separately.

The third format information of the control channel shown in Fig.14, contains the same information elements as the second example, except that it is assumed that more information related to advanced encoding, included in the management information (for example, more vector pre-coding, for example, the index reflecting a larger index space).

Then, the fourth example forms�the information of the control channel also refers to the use of 2-stream MIMO schemes. In this example, different sizes of the payload are used for corresponding MIMO streams, so these two fields the size of the payload included in the format. By analogy with the previous examples, the same modulation scheme can be used for both MIMO streams, and streams can be processed in a single HARQ process. Alternatively, the information modulation and HARQ can configure one stream, and information about the second stream is transmitted separately, for example, on a different control channel.

Fifth illustrative format of Fig.14, substantially similar to the fourth example, except that you use two separate HARQ processes for the respective streams of the MIMO scheme. Similarly, the sixth illustrative format of the control information L1/L2, shown in Fig.14 involves two different payload size and two different modulation schemes for the two MIMO streams, although both streams are processed in a single HARQ process.

In General, information on the control channel can be partially or completely contain information for multiple MIMO streams for different MIMO configurations.

As the illustrative information of the control channel shown in Fig.14, the format of the control information on the control channels may vary depending on the configuration used to transmit user data.Accordingly, different formats can differ in its content, i.e. the information elements contained in the appropriate format and/or size (measured in number of bits) formats. The format information of the control channel may, for example, depend on at least one of the following options:

- communication on the control channel with a MIMO scheme or the scheme of beam forming, used or to be used in the user data transmission,

- communication on the control channel with the transmission of user data uplink or downlink,

- communication on the control channel using OFDM transmission in local mode or in distributed mode for transmission of the user data.

Note that the examples shown in Fig.14 and 15 are intended for illustrative to visualize on an abstract level that there may be various other formats of the control channel, leading to different sizes of information on the control channel. There may be additional fields that are defined for specific formats (e.g., control commands power for the different channels, information associated with the multi-user MIMO, format identifiers, etc.) that are not shown.

In addition, some fields may be omitted, because their information can the strip�and from other fields (for example, because fields are combined into other fields or because the corresponding information is transmitted on a different channel or pre-configured). Some examples of how you can get the individual parameters information of a control channel from each other below for illustrative order:

- information modulation schemes can be derived from the size of the payload and information allocation RB

the HARQ information may not be required for certain formats of the control channel

- the number of MIMO streams can be derived from some other fields of the control channel and/or may be pre-configured

In addition, certain fields of information on the control channel can have different sizes in different formats of the control channel, for example:

- field information of the RB allocation may be less than the first format to support this format of the control channel as small as possible (to improve coverage since the small size of the format gives a lower encoding rate/higher gains from encoding). However, this may create some limitations regarding the flexibility of RB allocation.

- for the control channel uplink, “the information field of the RB allocation may be less than for some of the control channels downlink

For this reason, according to Fig.14, with�him of modulation and coding for the respective control channels can be selected on the basis of the format control information to the corresponding control channel, to align the size information of the control channel in the physical resource. According to another embodiment of implementation, the different formats of the control channel, as shown in Fig.14 and Fig.15, can also be displayed in two different size of the code block (i.e. the number of bits of coded control information), as shown in Fig.15.

The following table shows the illustrative definition and overview of the contents of the control channels according to an illustrative embodiment of the invention. Note that the size of the corresponding fields specified only for illustrative purposes.

Table 14
FieldSizeComment
cat. 1
(Indicated resource)
ID (UE or group)8Indicates the UE (or UE group) who is to receive the data transmission; indication may be implicit, for example, in the form of CRC

Assign resources6Specifies how�e (virtual) resource blocks (and levels in multilevel transmission) needs(HN) to demodulate UE.
The duration of destination2The period of the assignment, can also be used to control the TTI or permanent traffic control.
cat. 2
(transport format)
Information associated with multiple antennas0-20The content depends on the selection of schemes for MIMO/beamforming.
The modulation scheme2QPSK, 16QAM, 64QAM. In the case of multi-level transmission may require multiple instances.
The payload size6Interpretation may depend, for example, modulation schemes and the number of assigned resource blocks (see HSDPA). In the case of multi-level transmission may require multiple instances.
cat. 3
(HARQ)
If adopted mixed asynchronous ARQThe process number of a mixed ARQ3Specifies the process mixed AQ accesses the current transfer.
Version with redundancy2To support the increasing redundancy.
New indicator data1To implement a soft clearing of the buffer.

If adopted mixed synchronous ARQThe sequence number retransmission2Used to receive the redundancy version (To support increasing redundancy) and 'new indicator data' (For the implementation of the soft clearing of the buffer).

Other embodiments of the invention relate to limiting the number of attempts a blind detection to further simplify the configuration of the control channel. To limit/reduce the number of attempts of blind detection by the receiver (mobile station, UE), the receiver can, for example, to attempt to detect only a subset of the possible set of formats and sizes (resources) alarm control L1/L2.

This may require some configuration. Corresponding configurations�I mainly affects the receiver, but maybe, in some cases, to affect the transmitter.

In one illustrative embodiment, the implementation, the receiver configured in such a way that it attempts to accept only a subset of the formats and/or a subset of the dimensions (the MCS levels for specific formats). The receiver can optionally or alternatively, be configured to attempt to receive the control channels only on some of the physical resources used for control channels.

In one illustrative scenario, the receiver can be pre-configured in MIMO mode 1 for downlink and thus, he tries to accept only the format specified for the MIMO mode 1. Additionally, this mobile station can attempt to take only a certain size of the code block for this format 1 MIMO mode information of the control channel. In addition, the mobile station may also try to adopt this format 1 mode MIMO only on the subset of the resources of the control channel.

In another illustrative scenario, the mobile station can operate in uplink and downlink. This mobile station may, therefore, take the control channels uplink on the first subset of all resources of the control channel and also can accept the control channels of the descending line� connection on the second subset of all resources of the control channel.

In many cases this operation may imply that the transmitter has limited flexibility with respect to the specific display formats of the control channel only in certain resources. This can be seen as the configuration of the transmitter. In General, the flexibility of the transmitter may be limited by the complexity of the receiver (UE) (number of blind detection).

In one illustrative embodiment, the configuration of the receivers is performed by the network (by the transmitter). The configuration can be General information for all receivers that can broadcast to the access network. Alternatively, a configuration may be allocated to an individual receiver or group of receivers. In this alternative, you can use a dedicated signaling to transmit the configuration to the receiver(s). The General configuration can be transmitted, e.g., broadcast channel, and the selected information can be transmitted, for example, via a dedicated channel or shared channel. In some cases you can use a combination of shared and dedicated configurations. For example, the receiver can be initialized by basic common configuration (via broadcast) and can be re-configured by dedicated signaling.

In addition, the configuration can�usestatic dynamically for each podagra. In one illustrative embodiment of the so-called control channel cat. 0 can be configured in the communication system to provide information about the transmitted at the moment of formats, sizes and/or resources of a control channel. For example, in this potcake information cat. 0 may specify that only transmits the control channels associated with the transmission of user data uplink (or, alternatively, transfer of user data in the downlink), so that only the interested receivers may require the reception of control channels. In another example, information cat. 0 may indicate that the control channels only contain information on the control channel (and thus the corresponding formats of the control channel) for a specific MIMO modes. In another example, the management information cat. 0 may indicate that the control channels are transmitted only on certain resources of a control channel or may indicate that the control channels carry only the information of the control channel of a certain size.

Information cat. 0 not necessarily be transferred for each podagra. It can also be sent in a larger time scale, and the information may be valid for a certain period of time.

As in�options for carrying out the invention providing multiple sizes of the code block from the unified format of the control channel (see for example Fig.7, Fig.12, Fig.13 and Fig.15), we can consider the status of the mobile stations is determined by the geometry/SINR (signal-to-interference plus noise). For example, mobile stations MS1 and MS2 can be on the border radiosity, and therefore it can be assumed that the quality of the radio channel is lower than the quality for mobile stations MS3 and MS4, which, presumably, are closer to the center radiosity. For the safe transfer of signalling control stations MS1 and MS2, thus, is assigned more resources to the control channel, i.e., a format 1 control channel is modulated and encoded to generate larger code block (i.e., the amount of coded information of the control channel) or a larger number of modulation symbols, while MS3 and MS4, which has a higher channel quality, take the alarm control with a higher MCS level, i.e., a format 1 control channel is modulated and encoded to generate smaller code block (i.e., the amount of coded information of the control channel) or smaller number of modulation symbols.

In yet another embodiment, alarm management (i.e., information of a control channel for control channels) and user yeah�nye can multiplicious. It can be implemented, for example, through TDM (multiplexing with time division), as shown in Fig.6 and Fig.7, FDM (multiplexing frequency division), CDM (multiplexing code division) or the allocation of time-frequency resources in potcake. In addition, different control channels themselves can multiplicious in the CDM mode, TDM and/or FDM. In one illustrative embodiment, the implementation, the multiplexing of user data is performed through a combination of TDM and FDM, i.e., the multiplexing can be performed on the element level of the resource, whereas the control channels are multiplexed through a combination of CDM and FDM. This illustrative version of the implementation shown in Fig.19. In the left side of the figure shows the mesh resources podagra OFDM channel in which the control channels of two sets appear in a physical resource in a distributed mode. In the right side of the figure shows the mesh resources podagra OFDM channel in which the control channels of two sets appear in a physical resource in the local mode.

In the example of Fig.1 management information L1/L2 is transmitted across multiple control channels L1/L2. According to one illustrative embodiment of the, the control channels L1/L2 can be displayed on a portion of physical resource blocks and uniformly races�to regularise on all blocks of physical resources. In the General case, the mapping of the control channels L1/L2 on the physical resource blocks may be performed in different ways. For example:

The control channels can be divided evenly across all physical resource blocks (as shown in Fig.1).

The control channels may be unevenly distributed across all blocks of physical resources.

The control channels can (not)evenly distributed on the selected physical resource blocks (for example, as shown in Fig.19).

A separate part of the control information L1/L2 can be encoded in different ways. According to one illustrative embodiment of the, information cat. 1, cat. 2, and cat. 3 is encoded jointly for each mobile station. Another option is to encode information cat. 1, separately from information cat. 2, and cat. 3 for each mobile station.

The details regarding the encoding and display in potcake for different categories of alarm control L1/L2 for use in another illustrative embodiment, can also be found in 3GPP RAN WG#1 Tdoc. R1-061672: "Coding Scheme of L1/L2 Control Channel for E-UTRA Downlink", June 2006, available online at http://www.3gpp.org and incorporated herein by reference.

In some embodiments, information management (L1/L2) is transmitted more reliably than the user data, since PR�priate decoding control information may be a precondition for the beginning of the demodulation and decoding of user data. This usually means that the target frequency of block errors for alarm management should be lower than the target frequency of block errors for user data. In the case of (mixed) ARQ, this assumption applies to the target frequency of block errors for the first transmission.

Furthermore, note that the principles of the invention shown in the various illustrative embodiments, can advantageously be used in mobile communication system described in Fig.16. The mobile communication system may have an "architecture of two nodes, consisting of at least one Access gateway and Core Gateway (ACGW) and Node B. ACGW can perform the functions of the core network, for example, to route calls and data connections to external networks, and also may implement some features RAN. Thus, ACGW can be viewed as a combination of functions implemented by the GGSN and SGSN in modern 3G networks, and functions of the RAN, for example, management of radio resources (RRC), header compression, encryption/integrity protection and external ARQ. The node B may perform functions such as segmentation/concatenation, scheduling and allocation of resources, multiplexing and physical function level. For illustrative purposes only, shows the nodes eNode B, the control of only one radiosity. Obviously, using directional antennas and/or and�and other methods nodes eNode B can manage multiple radiotime or logical radiotime.

In this illustrative network architecture, the data channel shared use can be used for communication on uplink and/or downlink on the radio interface between mobile stations (UE) and base stations (eNode B). This data channel shared use may have the structure shown in Fig.3 or Fig.4. Thus, the channel can be viewed as a concatenation of podkatov, illustratively shown in Fig.6 or Fig.7. According to an illustrative embodiment of the invention, the data channel shared use can be set as in the section "prior art", as in 3GPP TR 25.814 or HS-DSCH specified in 3GPP TS 25.308: "High Speed Downlink Packet Access (HSDPA); Overall description; Stage 2", version. 5.3.0, December 2002, available online at http://www.3gpp.org and incorporated herein by reference. The shared channel in downlink can be used for transfer of control channels to individual users (UE).

Furthermore, note that the different dimensions of information control channel, shown here in different tables are for illustrative purposes only. Note that the exact number of bits of the respective formats, and number formats specified for the control channels may differ from the examples shown in the�x here in the various tables and figures. Nevertheless, the principles outlined here are applicable.

According to another embodiment of the invention, provides for the implementation of the above described various embodiments using hardware and software. It is obvious that various embodiments of the invention can be implemented or performed using computing devices (processors). Computing device or processor may for example be a General purpose processor, a digital signal processor (DSP), a specialized integrated circuit (ASIC), gate arrays, field programmable (FPGA) or other programmable logic device, etc. Various embodiments of the invention can also be implemented or realized through a combination of these devices.

In addition, various embodiments of the invention can also be implemented by software modules that are executed by a processor or directly in hardware. In addition, the combined implementation of software modules and hardware. The software modules may be stored on any machine-readable media such as RAM, EEPROM, EEPROM, flash memory, registers, hard disks, CD-ROM, DVD, etc.

Previously have described the different options for implementation�ia of the invention and their various varieties. Specialists in this field of technology can offer numerous variations and/or modifications of the present invention, as shown in specific embodiments, without deviating from the essence and scope of the invention described in summary form.

It should also be noted that most of the variants of the implementation described in relation to 3GPP communication system and the terminology used in the previous sections mainly relates to the 3GPP terminology. However, the terminology and description of various embodiments according to the 3GPP architectures are not intended to limit the principles and ideas of the inventions to such systems.

The detailed description given above in the section "prior art", is intended for better understanding described here are the most relevant to 3GPP illustrative variants of implementation, and should not be considered limiting the invention to the described specific implementations of processes and functions in the mobile communication network. However, in the present description of the constraint can be easily applied to the architectures described in the section "prior art". Furthermore, the principles of the invention also can be easily used in LTE RAN, currently discussed in 3GPP.

1. Method of receiving control information format of the control information on the control channels� in mobile communication system, in which each of the control channels configured according to one of a plurality of formats of the control information, wherein the number of bits, the method contains the stages at which:
take the number of elements in the physical resource containing the modulated information to control at least one of the control channels,
demodulate the modulated control information of at least one control channel using the modulation scheme to obtain coded bits of the control information of the control channels, and
decode the bits of the encoded control information of at least one control channel,
get the number of bits of coded control information, which is an integer multiple of the smallest allowable number of bits of coded information management for all formats of information management.

2. A method according to claim 1, wherein the modulated control information is transmitted to the resource elements of the physical control channels downlink, and the method further comprises a stage on which to perform a blind detection on only a subset of elements of a physical resource that may be displayed modulated information management, and/or on only a subset of information management.

3. A method according to claim 1 or 2, wherein �] is the object of the receiving party, communicates with the base station.

4. A method according to claim 3, in which the object of the receiving side is a mobile station.



 

Same patents:

FIELD: radio engineering, communication.

SUBSTANCE: group of inventions relates to means for flexible spectrum allocation in communication systems. Disclosed is a method for flexible allocation of a shared frequency spectrum to a plurality of users which comprises steps of assigning one or more clusters from a set of clusters of subcarriers identified by an identifier and associated with a sector to a user, wherein the set of clusters of subcarriers is allocated for channel sensitive scheduling (CSS), and wherein users of a first group are fixedly assigned clusters in a first group and channel quality does not change significantly over time; and assigning one or more other clusters from another set of clusters of subcarriers associated with a sector to another user, wherein the other set of clusters of subcarriers is allocated for frequency hopping (FH) scheduling and wherein users of a second group are assigned clusters in the second group and users of the second group can hop frequency within the assigned group of clusters.

EFFECT: improved frequency diversity of interference in communication systems.

36 cl, 3 dwg

Resource allocation // 2528020

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to communication engineering and can be used in wireless communication systems. In an encoding method, a resource allocation bit combination is transmitted to all users along with a resource identifier for each user. Each user then identifies their allocated subcarriers using the received allocation bit combination and the received resource identifier. Another encoding method employs a code tree to generate a value representing subcarrier allocation. A user device then uses the code tree to determine subcarrier allocation from the signalled value.

EFFECT: high efficiency of encoding resource allocation data that are signalled to a series of user devices in a communication system.

49 cl, 12 dwg, 2 tbl

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to a wireless communication system. Bandwidth for transmission to an access terminal is limited by a preset bandwidth which is less than the bandwidth available for transmission to an access terminal, and precoding information relating to subcarriers within the limited bandwidth is provided at the transmitting device. Precoding information relating to the subcarriers within the limited bandwidth provides feedback information on channel characteristics of the direct link with respect to different subbands and can be transmitted in reverse direction over the channel associated with the bandwidth.

EFFECT: improved performance in a wireless communication system using segments referred to as subbands and using precoding.

30 cl, 6 dwg

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to communication engineering and can be used in wireless communication systems. For more effective support for asymmetric traffic loads in the downlink, a wireless transmit/receive unit (WTRU) is configured with multiple carriers with unpaired downlink carrier(s). The unpaired downlink carrier is an active downlink carrier that does not have a corresponding active uplink carrier. For transmission of feedback information for the unpaired downlink carrier, a feedback channel may be allocated on a distinct non-overlapping resource region on the uplink carrier so that the network may determine which downlink carrier the received feedback information is for based on the resource region. Alternatively, a different feedback channel may be allocated for the unpaired downlink carrier. Alternatively, the feedback information may be transmitted via medium access control (MAC) encoded feedback.

EFFECT: high throughput of transmission channels.

26 cl, 9 dwg, 10 tbl

Resource allocation // 2510579

FIELD: radio engineering, communication.

SUBSTANCE: in one method of encoding a bit combination, resource allocation is transferred to all users together with a resource identifier for each user. Each user then identifies their allocated subcarriers using the received allocation bit combination and the received resource identifier. Another encoding method employs a code tree to generate a value representing subcarrier allocation. The user device then uses the code tree to determine subcarrier allocation from the signalled value.

EFFECT: high efficiency of the resource signalling mechanism using the least possible frequency-time resources to support a large number of user devices.

33 cl, 12 dwg

Resource allocation // 2510139

FIELD: radio engineering, communication.

SUBSTANCE: described are efficient encoding methods for encoding resource allocation data that must be signalled to multiple user devices in a communication system. In one encoding method, a resource allocation bit combination is transmitted to all users along with a resource identifier for each user. Each user then identifies their allocated subcarriers using the received allocation bit combination and the received resource identifier. Another encoding method employs a code tree to generate a value representing subcarrier allocation. The user device then uses the code tree to determine subcarrier allocation from the signalled value.

EFFECT: high efficiency of using communication with a large number of users.

34 cl, 10 dwg

FIELD: information technologies.

SUBSTANCE: in accordance with one version of realisation, a method for signals transfer is provided. Forms of signals are sent at least from two appropriate sectors. At least two appropriate sectors are at least in two different sets from an expanded set of sectors. Transmitted forms of signals include signal forms, which are at least almost mutually orthogonal at least by a separate dimension of a signal.

EFFECT: reduction of mutual signal noise.

65 cl, 9 dwg

FIELD: information technology.

SUBSTANCE: respective demodulation reference signals (DM RS) of a user bandwidth can be cyclically shifted with respect to each other. An uplink scheduling grant may include an index for a DM RS resource having a cyclic shift and an orthogonal cover code or interleaved frequency division multiple access (IFDMA) comb, wherein use of the orthogonal cover or IFDMA comb may be configured using a radio resource control message. Use of the orthogonal cover or IFDMA comb may additionally be tied statically into DM RS resources. At least some of respective demodulation reference signals of at least two user bandwidths may be mutually orthogonal.

EFFECT: efficient use of multiband transmission in a multiple-input and multiple-output system.

23 cl, 8 dwg

FIELD: information technology.

SUBSTANCE: techniques for mapping virtual resources to physical resources in a wireless communication system are described. In an aspect, a virtual resource (e.g., a virtual resource block) may be mapped to a physical resource in a selected subset of physical resources based on a first mapping function, which may map adjacent virtual resources to non-adjacent physical resources in the selected subset. The physical resource in the selected subset may then be mapped to an allocated physical resource (e.g., a physical resource block) among a plurality of available physical resources based on a second mapping function. In one design, the first mapping function may include (i) a re-mapping function which maps an index of the virtual resource to a temporary index and (ii) a permutation function (e.g., a bit-reversed row-column interleaver) which maps the temporary index to an index of the physical resource in the selected subset.

EFFECT: reduced volume of transmitted overhead information.

29 cl, 9 dwg, 5 tbl

FIELD: information technology.

SUBSTANCE: described are methods and apparatus for transmitting coded information blocks of different size in a sectored wireless communication cell. Information may be classified and formed into large, medium and small coded blocks which may include error correction code bits based on the number of bits representing the information, time criticality of the information and tolerable level of interference. Channels with full tone overlap between adjacent sectors, channels with no tone overlap between adjacent sectors, and channels with partial tone overlap between adjacent sectors are used for blocks of different size. Large transmission blocks are transmitted using full tone overlap channels; medium transmission blocks are transmitted using partial tone overlap channels; small transmission blocks are transmitted without using transmission tone overlap in adjacent sectors.

EFFECT: providing different levels of balancing frequency band and transmission reliability.

23 cl, 7 dwg

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to a method of data transmission in a wireless communication system with hybrid automatic request for repetition (HARQ). Assessment bias compensation CQI is performed by processing of HARQ receipts (7), a signal-code sequence (SCS) is chosen based on compensated assessment CQI, coding of a data batch (6) is performed by its help, after that, the first attempt of transmission of the batch of coded data to a receiver (4) is performed via a forward channel (2), the success of which is determined as per the type of HARQ receipt (7) received from the receiver (4) via a backward channel (3) in response to this attempt. In case the received HARQ receipt (7) is not positive, repeated attempt of batch transmission is performed via the forward channel (2). In order to provide the adaptive compensation of bias of assessment CQI, the first measure (S) is determined using at least two last HARQ receipts and based on it there determined is a value of a factor of coarse compensation, the second measure (T) is determined using at least one of the last HARQ receipts and based on it there determined is a value of a factor of fine compensation, a reset operation of the value of the fine compensation factor is performed till the initial value at the change of the current value of the coarse compensation factor and CQI assessment is changed considering values of the obtained values of the coarse compensation factor and the fine compensation factor.

EFFECT: providing control of the level of successful delivery of data from the first try of transmission; improving the efficient use of radio resources and speed of data transmission in a wireless communication system as a whole.

17 cl, 5 dwg

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to a method for wireless transmission of data and control information using a plurality of transmission levels. The method includes determining the number of bits in one or more codewords (122) of user data to be transmitted during a subframe, and calculating the number of control vector symbols (124) for allocation for control information during said subframe. The number of control vector symbols (124) is calculated based at least in part on the number of bits in one or more codewords (122) of user data to be transmitted during said frame, and estimation of the number of vector symbols (124) to which one or more codewords (122) of user data are to be mapped. Estimation of the number of vector symbols (124) depends at least in part on the number of control vector symbols (124) to be allocated for control information. The method also includes mapping one or more control codewords (120) to a calculated number of control vector symbols (124) and transmitting the vector symbols (122) of user data and control vector symbols (124) on a plurality of transmission levels during said subframe.

EFFECT: providing optimum allocation of transmission resources when there is need to transmit a large amount of control information.

30 cl, 7 dwg

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to a method for wireless transmission of data and control information using multiple of transmission layers. The method includes determining the number of bits in one or more codewords of user data (122) transmitted in a subframe and calculating, for each control signal from M, transmitted in the subframe, a value (Q') based at least in part on the number of bits in one or more codewords of user data (122) and estimating the number of vectors of symbols of user data (124) to which one or more codewords of user data (122) are mapped. Estimation of the number of vectors of symbols of user data (124) for a specific control signal from M depends at least in part on the number of control vectors of symbols (124) allocated to one or more other control signals from M. The method also includes determining the number of control vectors of symbols (124) for mapping each control signal from M based on the corresponding value 'Q', calculated for said control signal, mapping said control signal and transmitting the control vectors of symbols.

EFFECT: providing optimum allocation of transmission resources when there is need to transmit a large amount of control information.

34 cl, 7 dwg

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to a method for wireless transmission of data using a plurality of transmission levels. The method includes steps of: estimating the number of vector symbols (124) to be allocated for transmission of user data codewords (122) during a subframe; and determining the number of bits in a plurality of user data codewords (122) to be transmitted during a subframe. The method also includes a step of calculating the number of control vector symbols (124) for allocation for control information based, at least in part, on the estimated number of vector symbols (124) and the determined number of bits. Further, the method includes steps of: displaying the control codewords (120) in the calculated number of control vector symbols (124) and transmitting the vector symbols (124), which transfer the user data codewords (122) and control codewords (120) on a plurality of transmission levels during a subframe.

EFFECT: optimum allocation of transmission resources between control information and user data.

26 cl, 7 dwg

FIELD: radio engineering, communication.

SUBSTANCE: method includes the following steps, performed at a base station (eNB): performing channel encoding of information bits (ST 802), performing a process of matching the rate of encoded bits after interleaving (ST 804), and transmitting the transmitted data corresponding to the length of the encoded bits after rate matching to a mobile terminal (UE) (ST 806); and the following steps, performed in a mobile terminal (UE): receiving transmitted data (ST 807), performing channel decoding of the received data (ST 810), and discarding part of the received data according to the soft buffer memory size of the mobile terminal (UE) and storage thereof in the soft buffer memory (ST 812 and ST 813).

EFFECT: reduced deterioration of transmission characteristics when transmitting data even when there is insufficient soft buffer memory in a mobile terminal to control retransmission.

17 cl, 14 dwg

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to a channel state information (CSI) feedback method. A transmitter transmits a frame containing at least part of determined CSI. CSI is fed back in a very-high throughput (VHT) wireless communication system.

EFFECT: high data channel throughput, determining CSI parameters based on information included in a request.

73 cl, 34 dwg, 3 tbl

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to means of transmitting data packets. The method comprises encapsulating a data segment for a higher layer data packet in a lower layer data packet, wherein the higher layer data packet includes logical link control (LLC) protocol data units (PDU) and the lower layer data packet includes radio link control (RLC) data blocks for transmission over an enhanced general packet radio service (EGPRS) network; adding a new packet indicator set to a predetermined value to the lower layer data packet header if the data segment comprises the beginning of a new higher layer data packet to indicate the start of a new higher layer data packet; adding a length indicator to the lower layer data packet header if the data segment comprises the end of a higher layer data packet, wherein adding a new packet indicator includes adding a new packet indicator to a lower layer data packet only when the lower layer data packet begins from the new higher layer data packet segment.

EFFECT: reduced errors when segmenting and merging data packets.

12 cl, 8 dwg

FIELD: radio engineering, communication.

SUBSTANCE: device includes a unit transmission pulse counter, a transmission control unit, a transmission memory unit, a transmission parameter determining unit, a digital transmission system, a unit reception pulse counter, a reception control unit, a reception memory unit, a reception parameter determining unit, a comparator, transmission frame analysis units and a reception frame analysis unit.

EFFECT: high reliability of detecting single and multiple errors in a variable-length Ethernet frame and detecting alternating single and multiple failures in the digital data transmission system under analysis.

3 cl, 4 dwg

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to methods of reporting channel quality indicator (CQI) in a wireless communication network. A CQI request may be sent in a first subframe. The CQI may be measured for a second subframe having a first offset from the first subframe, and a corresponding CQI report is sent in a third subframe having a second offset from the first subframe.

EFFECT: reduced use of signalling resources.

30 cl, 2 tbl, 12 dwg

FIELD: radio engineering, communication.

SUBSTANCE: device contains the first, the second and third validity increase units, the first and the second data transmission channels, a repeated request signal output and information output, the first and the second input units, five NOT elements, four AND elements, four keys, and an OR element. The first outputs of validity increase units are informational, and the second ones are the control signal of codogram receiving correctness. The OR element output is the device information output, and the fourth AND element output is the device repeated request output.

EFFECT: channel bandwidth increase due to the lower number of repeated requests owing to better information receiving accuracy.

1 dwg

FIELD: communications.

SUBSTANCE: device has multiple cascade registers and multiple adders. During receipt of control information series operator forms a series of check connection bits and sends it to adders. After finishing of receipt operator serially adds given input bit to output bits of last register and outputs a result. Source value controller sends to registers a value selected from two source values.

EFFECT: higher efficiency, broader functional capabilities.

8 cl, 7 dwg, 2 tbl

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