Radio communication base station device and radio communication method used for multi-carrier communication

FIELD: physics, communications.

SUBSTANCE: invention relates to a base station device and a communication method used for multi-carrier communication. The station device includes: a selection unit for selecting a mobile station resource block using one of a first selection and a second selection, wherein the resource blocks, each comprising a plurality of subcarriers, are sequential in the frequency domain, are divided into a plurality of groups, each comprising a predefined number of resource blocks which are sequential in the frequency domain; and a transmitting unit for transmitting to the mobile station control information which includes both information of the difference between the first selection and the second selection and information indicating the selected resource block, where in the first selection said plurality of groups is divided into a plurality of sets which includes a first set comprising at least two groups which are part of said plurality of groups and are non-sequential in the frequency domain, and a second set comprising at least two groups which are different from said part of said plurality of groups and are non-sequential in the frequency domain.

EFFECT: preventing increase in overhead of allocation result report in frequency scheduling in a multi-carrier communication system.

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AREA of TECHNOLOGY

The present invention relates to an apparatus of a base station of radio communication and the way radio used to communicate with many carriers.

PRIOR art

Recently, in radio communication, and mobile communication in particular, are selected for transmission of various kinds of information such as image and data in addition to the speech signal. It is expected that the demand for higher-speed transmission will further increase in future, and will need to methods to broadcasts, which makes efficient use of limited frequency resources and realize high efficiency of transmission, to perform high-speed transmission.

One method of radio transmission that meets these requirements is OFDM (multiplexing with orthogonal frequency division multiplexing). OFDM is a method of communication with many of bearing data in parallel using many subcarriers, has features such as high frequency efficiency and reduced inter-symbol interference in a multipath propagation environment, and is known as an effective method of improving the transmission efficiency.

In the process of developing the study are related to the planning of frequencies, when OFDM is used in downlink, and the data for mn�deities-mobile radio stations (below, simply "mobile station") are assigned to the multiple subcarriers (e.g., see non-patent document 1). According to the planning of frequencies, the device of the base station radio (just below the "base station") adaptively allocates subcarriers to mobile stations based on the established qualities of frequency bands that the mobile stations so that you can achieve maximum effect multiplayer explode and communicate effectively.

Planning of frequencies, typically performed in units of resource blocks (RB) obtained by converting the sets of multiple subcarriers into blocks. In addition, there are two methods of allocation in the planning of frequencies, namely the localized allocation, which is the allocation in units of a plurality of consecutive subcarriers and a distributed allocation in which the allocation is performed for the inconsistent set of distributed subcarriers.

In addition, the result of the selection in the planning of frequencies, performed at a base station communicates with mobile stations using a shared control channel (SCCH). Additionally, the formulation is under study in relation to the result of allocating bandwidth to 5 MHz in one SCCH (for example, see non-patent document 2).

Non-patent document 1: R1-050604 "Downlink Channelization and Multiplexing for EUTRA" (Formation of channels in the downlink and mul�plexitube for EUTRA), 3GPP TSG-RAN WG1 Ad Hoc on LTE, Sophia Antipolis, France, 20-21 June 2005

Non-patent document 2: R1-060032, "L1/L2 Control Channel Structure for E-UTRA Downlink" (the Structure of the channel L1/L2 control for downlink in E-UTRA), NTT DoCoMo, 3GPP TSG-RAN WG1 LTE Ad Hoc Meeting contribution, 2006/01

Disclosure of the INVENTION

The problems that must be solved by the invention

Here, in order to enhance the effect of frequency diversity in the distributed allocation may expand bandwidth, intended for distributed allocation, i.e. increasing the number of subcarriers with the distributed allocation. However, increasing the number of subcarriers with the distributed allocation, causes an increase in the number of patterns of allocation and, accordingly, require more bits of signaling to report the results of the selection. This leads to increased costs for reporting the results of isolation using SCCH. As described above, in the frequency planning there is a relationship of compromise between the effect of frequency separation costs and to report the results of the selection.

Therefore, the objective of the present invention is to provide a base station and radio communication method to achieve the sufficient effect of frequency diversity in the planning of frequencies along with reduction of cost to the reporting of the results �of adelene.

Means for solving the problem

The base station according to the present invention used in a radio communication system, wherein the plurality of subcarriers forming a multi-frequency signal is divided into multiple resource blocks, employs a configuration having: a planning section that assigns data to a mobile station radio communication partial blocks of resources, equally extracted from the set of resource blocks; a section of the formation, which forms the control information messages for a mobile station of a radio communication of the result of allocation in the planning section; and a transmission section that transmits the control information of the mobile station radio communication.

USEFUL RESULT of the INVENTION

According to the present invention, it is possible to achieve a sufficient effect of frequency diversity in the planning of frequencies along with reduction of cost to the reporting of the results of the selection.

BRIEF description of the DRAWINGS

Fig.1 is a block diagram showing the configuration of a base station according to embodiment of the present invention;

Fig.2 - example of format information SCCH, according to the embodiment of the present invention;

Fig.3 - example of multiplexing, according to an embodiment of the present invention;

Fig.4 is a block diagram showing the configuration Moby�the diesel station according to the embodiment of the present invention;

Fig.5 is an example of a PRB extraction (example 1 distributed allocation), according to an embodiment of the present invention;

Fig.6 is a configuration example of VRB (example 1 distributed allocation), according to an embodiment of the present invention;

Fig.7 - example of discharge alarm, according to an embodiment of the present invention;

Fig.8 is an example of a PRB extraction (example 2 distributed allocation), according to an embodiment of the present invention;

Fig.9 is a configuration example of VRB (example 2 distributed allocation), according to an embodiment of the present invention;

Fig.10 - example of extracting PRB (example 3 distributed allocation), according to an embodiment of the present invention;

Fig.11 is a configuration example of VRB (example 3 distributed allocation), according to an embodiment of the present invention;

Fig.12 - example of extracting PRB (example 4 distributed allocation), according to an embodiment of the present invention;

Fig.13 is a configuration example of VRB (example 4 distributed allocation), according to an embodiment of the present invention;

Fig.14 - example of extracting PRB (example 5 distributed allocation), according to an embodiment of the present invention;

Fig.15 - example us�Reiki VRB (example 5 distributed allocation), according to the embodiment of the present invention;

Fig.16 is a configuration example of VRB (example 6 distributed allocation), according to an embodiment of the present invention; and

Fig.17 - example of frequency planning, according to an embodiment of the present invention.

BEST mode of carrying out the INVENTION

Variant implementation of the present invention are described in detail below with reference to the accompanying drawings.

Fig.1 shows the configuration of base station 100 according to this embodiment of the. Base station 100 is a base station used in a radio communication system where multiple subcarriers constituting the OFDM symbol, which is a multi-frequency signal, divided into many RB, and performs frequency planning using many RB.

Base station 100 is configured with a section 101-1 to 101-n, encoding sections 102-1 to 102-n modulation in connection with n mobile stations (MS) that can interact with the base station 100.

The encoding section 101-1 to 101-n are performing encoding processing of data #1-#n to the mobile stations #1-#n, and the modulation section 102-1 to 102-n perform processing on the modulation coded data to generate data symbols.

The scheduler 103 performs frequency planning on the basis of indicators of channel quality (CQ) from mobile stations, assigns data to the mobile stations blocks RB resources and outputs the data in section 104 multiplexing. The examples are based on CQI planning method include the method of maximum CIR and method of proportional fairness. In addition, the scheduler 103 displays the results of allocation (indicating, for which mobile stations, the data symbols are assigned RB and subcarriers) in section 105 of the formation SCCH.

Section 105 of the formation generates SCCH control information (information SCCH) to report the results of allocation in the scheduler 103 to the mobile stations in accordance with the format shown in Fig.2. In shown in Fig.2 format identifier (ID) of the mobile station, which transmitted data symbol, is set to "mobile station ID", information indicating a localized allocation or a distributed allocation (e.g. "0" in the case of a localized allocation, "1" in the case of distributed allocation) is set in the "type selection", and information about virtual resource block (VRB), allocated mobile station, is set to "VRB allocation".

Section 106 performs encoding processing of encoding information SCCH, and section 107 performs modulation processing of the modulation encoded information SCCH, and outputs the resulting information SCCH in section 104 multiplexing.

Section 10 of the multiplexing multiplexes the data symbols, entered from the scheduler 103, the SCCH information and the pilot signals and displays the results in the section 108 IFFT (inverse fast Fourier transform). Here, the multiplexing SCCH information and pilot signals is performed based on the subframe, as shown, for example, Fig.3. Fig.3 shows a case where one subframe consists of seven OFDM symbols, and in this case, the pilot signals and the SCCH information is converted into the first and second OFDM symbols, and the data is converted to OFDM symbols from the third to the seventh.

Section 108 performs IFFT IFFT for a plurality of subcarriers are assigned SCCH information, pilot signals and data symbols to form the OFDM symbol, which is a signal with multiple carriers.

Section 109 adding a CP (cyclic prefix) adds the same signal as the rear end portion of the OFDM symbol to the header OFDM symbol as a CP.

Section 110 performs transmission processing of the transmission, such as digital to analog (D/A) conversion, amplification and conversion with increasing frequency over the OFDM symbol with a CP and transmits the OFDM symbol from antenna 111 to mobile stations.

Section 112 of the radio receives CQI transmitted from the mobile stations, via antenna 111, and performs receiving processing, such as conversion downconverter and analog-to-digital (A/D) conversion. These CQI are adopted, information about the spacecraft�ETS, reported from mobile stations. Then, each mobile station can measure the received quality on the basis of RB using a received SNR, received SINR, received CINR, received power, interference power, the frequency of bit errors, bandwidth and MCS, with the help of what can be achieved by a pre-set error rate. In addition, the CQI may also be called "CSI" (channel state).

Section 113 performs demodulation processing of demodulating CQI over after the reception processing section 114 performs decoding processing of decoding on the demodulated CQI, and outputs the decoded CQI to the scheduler 103.

Further, Fig.4 shows the configuration of mobile station 200 according to this embodiment of the.

In mobile station 200 section 202 of the radio receives the OFDM symbol transmitted from base station 100 (Fig.1) via antenna 201, performs reception processing such as conversion downconverter and analog-to-digital conversion and outputs the resulting OFDM symbol in a section 203 removal of CP.

Section 203 of the CP removal removes the CP added to the OFDM symbol, and outputs the resulting OFDM symbol in a section 204 FFT (fast Fourier transform).

Section 204 FFT converts the OFDM symbol into a frequency domain signal by performing FFT on the OFDM symbol, and outputs the SCCH information and the symbol� signal data in section 205 of the correction, and outputs the pilot signals in section 206 of the channel estimation.

Section 206 of the channel estimation estimates the channel characteristic on the basis of the subcarrier using the pilot signals, outputs the evaluation result in section 205 of the correction and also measures the received quality of each RB using pilot signals, and outputs the result of measurement in section 213 of the formation of CQI.

Section 205 of the correction compensates for the fluctuation of the channel SCCH information and data symbols on the basis of the result of evaluating the characteristics of the channel, and outputs the compensated SCCH information and the data symbols are in section 207 demultiplexing.

Section 207 demultiplexing demultiplexes SCCH information from the symbol data, and outputs the SCCH information in section 209 demodulation.

Section 209 performs demodulation processing of demodulating the SCCH information, and section 210 performs decoding processing of decoding the demodulated information SCCH, and outputs the decoded SCCH information in section 207 demultiplexing. Here section 208 SCCH processing section configured 209 demodulation and section 210 of decoding.

Then section 207 demultiplexing retrieves only the data symbol intended for a mobile station 200, from the character data entered from section 205 of the correction according to the decoded SCCH information, and outputs the extracted symbol data in seccio demodulation.

Section 211 demodulation demodulates the character data entered from section 207 demultiplexing, and outputs the demodulated data symbol section 212 decoding.

Section 212 of decoding decodes the demodulated data symbol. Thus obtained received data.

Section 213 of formation generates CQI CQI indicating a received quality of each RB, the measured section 206 of channel estimation, and outputs the CQI to section 214 encoding.

Section 214 performs encoding processing of encoding the CQI over, and the section 215 performs modulation processing by the modulation of the coded CQI, and outputs the modulated CQI in section 216 of the radio.

Section 216 performs radio transmission processing, such as digital to analog conversion, amplification and conversion with increasing frequency over modulated CQI and transmits the resulting CQI from antenna 201 to base station 100.

To further explain the example distributed allocation in the frequency planning performed in the scheduler 103 of base station 100. In the subsequent explanation, it is assumed that the OFDM symbol having a bandwidth of 10 MHz, consists of 96 subcarriers, and it is assumed that the radio system 96 subcarriers are divided into 24 physical resource block (PRB), and each contains four subcarriers.

EXAMPLE 1 DISTRIBUTED APPROPRIATION�DEPOSITS

In this example, data directed to the mobile station, allocated equally partial PRB, evenly extracted from PRB from 1 to 24.

In this example, as shown in Fig.5, only even are extracted from PRB PRB 1-24, having a bandwidth of 10 MHz, and in the scheduler 103 is formed and establishes a subband for distributed allocation with bandwidth of 5 MHz. By extracting only even-numbered PRB is possible to form a subband for distributed allocation, consisting of partial PRB, evenly extracted their PRB 1-24. In addition, you can also create a similar subband for distributed allocation by extracting only odd-numbered PRB.

Many PRB, forming a subband for distributed allocation, divided into VRB 1 and 12, as shown in Fig.6. For example, VRB 1 consists of the first subcarriers in PRB's 2, 8, 14 and 20, VRB 2 consists of the second subcarriers in PRB's 2, 8, 14 and 20, VRB 3 consists of the third subcarriers in PRB's 2, 8, 14 and 20 and VRB 4 consists of the fourth subcarriers in PRB's 2, 8, 14 and 20. In addition, VRB 5 consists of the first subcarriers in PRB 4, 10, 16 and 22, VRB 6 consists of the second subcarriers in PRB 4, 10, 16 and 22, VRB 7 consists of the third subcarriers in PRB 4, 10, 16 and 22 and VRB consists of 8 fourth subcarriers in PRB 4, 10, 16 and 22. The same applies to VRB 9 through 12.

The scheduler 103 selects one of VRB 1 to 12 one mobile station using the frequency planning and desig�denotes data for a mobile station multiple PRB, support allocated to VRB. For example, when the scheduler 103 allocates VRB 1 certain mobile station, the scheduler 103 assigns the data to the first mobile station subcarriers in PRB's 2, 8, 14 and 20. With such a selection can be evenly assign data to a mobile station multiple PRB, forming a subband for distributed allocation. In addition, the scheduler 103 outputs the result of selection in section 105 of the formation SCCH.

Section 105 of the formation SCCH sets the bits of the alarm associated with VRB allocated by the scheduler 103 in the VRB allocation" in Fig.2, as shown in Fig.Table 7. For example, when VRB 1 is allocated to a certain mobile station, section 105 of the formation SCCH writes "0001" in "the VRB allocation". In addition, in this case, section 105 of the formation SCCH records "distributed selection" in the "selection type".

Here, when the VRB are set for all PRB 1-24, as described above, the desired 24 VRB (VRB 1-24). In this case, five bits are required signaling bits, shown in Fig.7. On the other hand, in this example, the VRB are set for 12 PRB extracted from PRB 1-24. Therefore, according to this example, the signaling bits are only needed for four bits, as shown in Fig.7. Thus, in this example, it is possible to reduce the increase in the number of signaling bits by one bit in the allocation for a mobile station Therefore the whole message of the result selection it is possible to reduce the increase in the number of signaling bits a number of bits corresponding to the number of mobile stations that are assigned to these. Incidentally, in this example, the distributed allocation is performed for a sub-band consisting of partial PRB, which are evenly extracted from PRB 1-24, having a bandwidth of 10 MHz, so you can achieve a similar effect of frequency diversity, as in the case where the distributed allocation is performed for all PRB 1-24.

That is, according to this example, even when the bandwidth scheduled for the distributed allocation, extends from 5 MHz to 10 MHz to enhance the effect of frequency diversity in the distributed allocation, it is possible to achieve a sufficient effect of frequency diversity in frequency planning, along with reduced cost to the reporting of the results of the selection.

EXAMPLE 2 DISTRIBUTED ALLOCATION

Here are the only differences between the example 2, the distributed allocation and example 1 of the distributed allocation.

As shown in Fig.8, in this example, PRB 1-24, having a bandwidth of 10 MHz are divided into two groups PRB, each having a bandwidth of 5 MHz. That is, group 1 PRB PRB consists of 1-12, and group 2 PRB PRB consists of 13-24.

As shown in Fig.8, in this example, only the even-numbered PRB extract�Xia from PRB group 1 and only the odd-numbered PRB is extracted from PRB group 2, and in the scheduler 103 is formed and establishes a subband for distributed allocation with bandwidth of 5 MHz. Even with the help of this method of extraction is possible to form a subband for distributed allocation using partial PRB, evenly extracted from PRB 1-24. In addition, it is equally possible to form the same subband for distributed allocation by extracting only odd-numbered PRB from PRB group 1 and extracting only even-numbered PRB from PRB group 2.

Many PRB, forming a subband for distributed allocation, divided into VRB 1 and 12, as shown in Fig.9. For example, VRB 1 consists of the first subcarriers in PRB's 2, 8, 13 and 19, VRB 2 consists of the second subcarriers in PRB's 2, 8, 13 and 19, VRB 3 consists of the third subcarriers in PRB's 2, 8, 13 and 19, and VRB 4 consists of the fourth subcarriers in PRB's 2, 8, 13 and 19. In addition, VRB 5 consists of the first subcarriers in PRB 4, 10, 15 and 21, VRB 6 consists of the second subcarriers in PRB 4, 10, 15 and 21, VRB 7 consists of the third subcarriers in PRB 4, 10, 15 and 21, and VRB consists of 8 fourth subcarriers in PRB 4, 10, 15 and 21. The same applies to VRB 9 through 12.

Thus, according to this example, can be attained effects similar to those in example 1, the distributed allocation.

EXAMPLE 3 a DISTRIBUTED ALLOCATION

In this example, as shown in Fig.10, by further separating groups 1 and 2 PRB in when�'ere 2 distributed allocation into two groups PRB, each having a bandwidth of 2.5 MHz, PRB 1-24, having a bandwidth of 10 MHz are divided into four groups PRB, each having a bandwidth of 2.5 MHz. That is, in this example, are formed four groups PRB, including the group 1-1 PRB consisting of PRB 1-6, group 1-2 PRB consisting of PRB 7-12, group 2-1 PRB consisting of PRB 13-18, and group 2-2 PRB consisting of PRB 19-24.

Additionally in this example, one of the groups 1-1 and 1-2 PRB is extracted from PRB group 1 and one group 2-1 and 2-2 PRB is extracted from PRB group 2, and in the scheduler 103 is formed and establishes a subband for distributed allocation with bandwidth of 5 MHz. Fig.10 shows a case where the group 1-1 PRB is extracted from PRB group 1 and group 2-1 is extracted from PRB group 2. Here, when the group 1-1 PRB is extracted from PRB group 1, any of the groups 2-1 and 2-2 PRB can be extracted from PRB group 2. However, when the group 1-2 PRB is extracted from PRB group 1, group 2-2 is extracted from PRB group 2 PRB in order not to reduce the effect of frequency diversity.

Many PRB, forming a subband for distributed allocation, divided into VRB 1 and 12, as shown in Fig.11. For example, VRB 1 consists of the first subcarriers in PRB 1, 4, 13 and 16, VRB 2 consists of the second subcarriers in PRB 1, 4, 13 and 16, VRB 3 consists of the third subcarriers in PRB 1, 4, 13 and 16, and VRB 4 consists of the fourth subcarriers in PRB 1, 4, 13 and 16. In addition, VRB 5 consists of the first subcarriers in PRB's 2, 5, 14 and 17, VRB 6 consists� of the second subcarriers in PRB's 2, 5, 14 and 17, VRB 7 consists of the third subcarriers in PRB's 2, 5, 14 and 17, and VRB consists of 8 fourth subcarriers in PRB's 2, 5, 14 and 17. The same applies to VRB 9 through 12.

Thus, according to this example, a subband for distributed discharge is formed in units of PRB groups consisting of a plurality of consecutive subcarriers and consecutive PRB group are not retrieved, so you can easily take the localized allocation and distributed allocation at the same time, along with reduced suppression effect of frequency diversity.

EXAMPLE 4 a DISTRIBUTED ALLOCATION

In this example, as shown in Fig.12, by further separating groups 1 and 2 PRB in example 2, the distributed allocation into four groups PRB, each having a bandwidth of 1.25 MHz, PRB 1-24, having a bandwidth of 10 MHz are divided into eight groups PRB, each having a bandwidth of 1.25 MHz. That is, in this example formed by the PRB groups are group 1-1 PRB consisting of PRB 1-3, group 1-2 PRB consisting of PRB 4-6, group 1-3 PRB consisting of PRB 7-9, group 1-4 PRB consisting of PRB 10-12, group 2-1 PRB consisting of PRB 13-15, group 2-2 PRB consisting of PRB 16-18, group 2-3 PRB consisting of PRB 19-21, and a group of 2-4 PRB consisting of PRB 22-24.

Additionally in this example, two groups are extracted from PRB group PRB 1-1 through 1-4 in group 1 PRB, and two groups are extracted from PRB group PRB with 2-1 2-4 in group 2 PRB, � in the scheduler 103 is formed and establishes a subband for distributed allocation, having a bandwidth of 5 MHz. In this case, a subband for distributed discharge is formed by the combination of the different combinations of groups 1-3, 1-4, 2-1 and 2-2 PRB, in order not to reduce the effect of frequency diversity. Fig.12 shows a case where the retrieved group 1-1 and 1-3 in the PRB PRB group 1 and extracted group 2-2 and 2-4 in the PRB PRB group 2.

Many PRB, forming a subband for distributed allocation, divided into VRB 1 and 12, as shown in Fig.13. For example, VRB 1 consists of the first subcarriers in PRB 1, 7, 16 and 22, VRB 2 consists of the second subcarriers in PRB 1, 7, 16 and 22, VRB 3 consists of the third subcarriers in PRB 1, 7, 16 and 22, and VRB 4 consists of the fourth subcarriers in PRB 1, 7, 16 and 22. In addition, VRB 5 consists of the first subcarriers in PRB's 2, 8, 17 and 23, VRB 6 consists of the second subcarriers in PRB's 2, 8, 17 and 23, VRB 7 consists of the third subcarriers in PRB's 2, 8, 17 and 23, and VRB consists of 8 fourth subcarriers in PRB's 2, 8, 17 and 23. The same applies to VRB 9 through 12.

Thus, according to this example, can be attained effects similar to those in example 3, the distributed allocation and subband for distributed allocation can be formed with various combinations of PRB groups.

EXAMPLE 5 the DISTRIBUTED ALLOCATION

In this example, as shown in Fig.14, performed additional separation of groups 1 and 2 PRB into four groups PRB, each having a bandwidth of 1.25 MHz, �in person as well, as in example 4, the distributed allocation.

In this example, one group is extracted from PRB group PRB 1-1 through 1-4 in group 1 PRB, and three groups are extracted from PRB group PRB with 2-1 2-4 in group 2 PRB, and in the scheduler 103 is formed and establishes a subband for distributed allocation with bandwidth of 5 MHz. In this case, a subband for distributed discharge is formed through a combination different from the combination of group 1-4, 2-1, 2-2, 2-3 PRB, in order not to reduce the effect of frequency diversity. Fig.14 shows a case where the extracted group 1-1 PRB in PRB group 1 and extracted groups 2-1, 2-2 and 2-4 in the PRB PRB group 2.

Additionally, it is also possible to extract three groups of PRB group PRB 1-1 through 1-4 in the PRB group 1 and extract one group PRB from PRB groups 2-1 2-4 in group 2 PRB. However, a subband for distributed discharge is formed by the combination of the different combinations of groups 1-2, 1-3, 1-4, 2-1 PRB, in order not to reduce the effect of frequency diversity.

Many PRB, forming a subband for distributed allocation, divided into VRB 1 and 12, as shown in Fig.15. For example, VRB 1 consists of the first subcarriers in PRB 1, 13, 16 and 22, VRB 2 consists of the second subcarriers in PRB 1, 13, 16 and 22, VRB 3 consists of the third subcarriers in PRB 1, 13, 16 and 22, and VRB 4 consists of the fourth subcarriers in PRB 1, 13, 16 and 22. In addition, VRB 5 consists of the first subcarriers in PRB's 2, 14, 17 and 23, VRB consists of 6 second Sain�things in PRB 2, 14, 17 and 23, VRB 7 consists of the third subcarriers in PRB's 2, 14, 17 and 23, and VRB consists of 8 fourth subcarriers in PRB's 2, 14, 17 and 23. The same applies to VRB 9 through 12.

Thus, according to this example, can be attained effects similar to those in example 4, the distributed allocation.

EXAMPLE 6 a DISTRIBUTED ALLOCATION

In this example, only the even-numbered PRB are extracted from PRB 1-24 for the formation of sub-band 1 for distributed allocation with bandwidth of 5 MHz (Fig.6), and only odd are extracted from PRB PRB 1-24 for the formation of sub-band 2 for distributed allocation with bandwidth of 5 MHz (Fig.16), and these sub-bands are set in scheduler 103. Additionally, set SCCH 1 and 2 in connection with the sub-bands 1 and 2, respectively. That is, although one SCCH in 5 MHz is used in examples 1-5 distributed allocation, in this example, SCCH uses two 5 MHz, the allocation of sub-band 1 for distributed allocation reported using SCCH 1, and the result of the allocation of sub-band 2 for distributed allocation reported using SCCH 2.

Many PRB forming subband 1 for distributed allocation, divided into VRB 1 and 12, as shown in Fig.6. Many PRB forming subband 2 for distributed allocation, divided into VRB 1 and 12, as shown� in Fig.16.

The scheduler 103 selects one of VRB 1 through 12 in the sub-band 1 or 2 for the distributed allocation of the one mobile station using the frequency planning and assigns the data to the mobile station lot PRB, support allocated to VRB. For example, when the scheduler 103 allocates VRB 1 in subband 1 for distributed allocation of a certain mobile station, the scheduler 103 assigns the data to the first mobile station subcarriers in PRB's 2, 8, 14 and 20. In addition, for example, when the scheduler 103 allocates VRB in the sub-band 1 2 distributed allocation of a certain mobile station, the scheduler 103 assigns the data to the first mobile station subcarriers in PRB 1, 7, 13 and 19. Then the scheduler 103 outputs the result of the selection to the section 105 of the formation SCCH.

As described above, section 105 of the formation SCCH sets the bits of the alarm in communication with the VRB allocated by the scheduler 103, the VRB allocation" in Fig.2. For example, when VRB 1 in subband 1 for distributed allocation is allocated to a certain mobile station, section 105 of the formation generates SCCH SCCH 1, in which "0001" is recorded in the "VRB allocation". In addition, for example, when VRB 1 in the sub-band 2 is allocated to a certain mobile station, section 105 of the formation generates SCCH SCCH 2, in which "0001" is recorded in the "VRB allocation".

Thus, according to this example are formed two podia�of azone for distributed allocation, each having a bandwidth of 5 MHz, and the results of the allocation are reported using two SCCH associated with these two sub-bands for distributed allocation, so you can identify all PRB 1-24, having a bandwidth of 10 MHz, for distributed allocation, along with the establishment of the signaling bits in the VRB allocation" is the same as in examples 1-5 distributed allocation.

Although the case is described with the example where SCCH 1 and 2 installed in two different frequency bands are associated with sub-bands 1 and 2 respectively, so that the subbands 1 and 2 are identified from SCCH 1 and 2, you can also add information for identifying the sub-bands 1 and 2 for the SCCH information shown in Fig.2 to identify the sub-bands 1 and 2.

The above explained examples 1-6 distributed allocation.

Further, due to frequency planning, which take into account as a distributed allocation and localized allocation. Here, assume that a mobile station And to which is applied a distributed allocation, and the mobile station In which to apply the localized allocation.

As shown in Fig.17, for mobile station And the scheduler 103 performs a distributed power allocation for arbitrary VRB in Fig.6 on the basis of example 1, the distributed allocation. Here assume that the VDRB (virtual raspredelenie�th resource block), dedicated mobile station And is composed of the first subcarriers in PRB's 2, 8, 14 and 20.

On the other hand, for a mobile station In assuming that group 1 PRB (Fig.8) defined in example 2, the distributed allocation is for localized sub-band allocation. Additionally, the scheduler 103 performs the localized allocation, as shown in Fig.17. Here assume that the VLRB (localized virtual resource block) allocated to the mobile station, PRB consists of 9, 10 and 11.

Thus, a subband for distributed discharge is formed using PRB 5 MHz, evenly extracted to achieve a sufficient effect of frequency diversity, whereas the sub-band for localized discharge is formed by a sequential PRB 5 MHz to achieve a sufficient effect of frequency planning. Thus, it is possible to make the number of signaling bits in the result selection in the distributed allocation of the same as the number of signaling bits in the result selection in localized allocation. In addition, when, and distributed allocation, and the localized allocation are performed simultaneously in the frequency planning, PRB, due to the distributed allocation, are not made of overlapping with PRB to be localized to the allocation.

The current 3GPP LTE standardization studies system mobile�Oh communication based on OFDM, which can be used with many mobile stations having mutually different widths of frequency bands. More specifically, research for mobile communication system having a bandwidth of 20 MHz, which can be used a number of mobile stations having a bandwidth of 10 MHz, 15 MHz and 20 MHz. In such a mobile communication system bandwidth 5 MHz × 2 (10 MHz) of bandwidth 20 MHz is allocated to mobile station having a throughput in 10 MHz (10 MHz mobile station), and a bandwidth of 5 MHz × 3 (15 MHz) of bandwidth 20 MHz mobile station is allocated with the bandwidth of 15 MHz 15-MHz mobile station). In addition, the mobile station having the bandwidth of 20 MHz (20-MHz mobile station) may use a bandwidth of 5 MHz × 4 (20 MHz). Therefore, given that the present invention is applied to such a mobile communication system in this embodiment implementation, the bandwidth of a subband for distributed allocation, consisting of partial PRB is set to 5 MHz. Thus, it is possible to perform the aforementioned distributed allocation for a 10-MHz mobile station, a 15-MHz mobile station and a 20-MHz mobile station.

Variant implementation of the present invention are explained as above.

�abundant station can also be called "UE" (user equipment), a base station Node B (node b) and subcarrier - "tone". In addition, RB may be called the "subchannel", "subcarrier block", "sub-band" or "portion." In addition, CP can be called "defensive interval (GI)".

In addition, the result of the allocation in the frequency planning can be communicated to a mobile station using a physical control channel downlink (PDDCH) instead SCCH.

In addition, the definition of a subband for distributed allocation can be installed in the base station and the mobile station, or may be communicated from the base station to the mobile station. This message may be performed using the broadcast channel or each SCCH subframe.

Although with the above-mentioned variant implementation describes an example where PRB 5 MHz are extracted from the bandwidth of 10 MHz, the present invention may also be implemented in the same way, as indicated above, even when PRB 10 MHz are extracted from the bandwidth of 20 MHz.

In addition, in the above-mentioned variant implementation, although VRB are set by combining the set of resources obtained by dividing one PRB into four parts, the number of divisions of one PRB is not limited to four.

In addition, although the above-mentioned variant implementation is described an exemplary case where the extracted even-numbered PRB or odd PRB, i.e., �de is retrieved every second PRB, can be removed every third or every fourth PRB.

Although with the above-mentioned variants of the implementation described in case of example in which the present invention is implemented with hardware, the present invention may be implemented using software.

In addition, each functional block used in the description of each of the aforementioned embodiments may typically be implemented as an LSI (LSI) consisting of an integrated circuit. These may be individual chips or partially or fully enclosed in a single chip. Here adopted "LSI", but it also can be called "IC", "system LSI", "super LSI" or "ultra LSI" depending on differing extents of integration.

Furthermore, the method of circuit integration is not limited to LSI, and also a possible implementation using a dedicated circuit or General-purpose processors. After manufacturing LSI is also possible to use FPGA (field programmable gate arrays) or processor with configurable that can be reconfigured the connection and setting cell circuits in the LSI.

In addition, if you receive the integrated circuit technology to replace LSI's as a result of the progress of semiconductor technology or other derivative technology, eating�governmental also possible to integrate the functional blocks using this technology. Also possible is the use of biotechnology.

The disclosure of the patent application of Japan No. 2006-126454, registered on April 28, 2006, including the specification, drawings and abstract, is incorporated into this document by reference.

INDUSTRIAL APPLICABILITY

The present invention is applicable to a mobile communication system or similar.

1. The base station device, comprising:
an allocation module configured to allocate the resource block to a mobile station by using one of the first allocation and the second allocation, wherein resource blocks, each of which contains many sub-carriers, which are consecutive in the frequency domain, are divided into many groups, each of which contains a predefined number of resource blocks that are consecutive in the frequency domain; and
transmission module configured to transmit to the mobile station of control information including both information about the difference between the first allocation and the second allocation and information indicating the resource block allocated to a mobile station,
moreover, in the first allocation mentioned many groups is divided into many sets, including the first set, which contains at least two groups that are part of the aforementioned plurality of groups � which are inconsistent in the frequency domain, and the second set containing at least two groups that differ from the mentioned part of the said plurality of groups and which are inconsistent in the frequency domain, and the mobile station is allocated the resource block in said at least two groups that are contained within the selected set of said plurality of sets;
in the second mobile station, the resource block is allocated in units of a plurality of resource blocks that are consecutive in the frequency domain; and
the information indicating the allocated resource block in the control information has the same number of bits in the first allocation and the second allocation.

2. The base station device according to claim 1, wherein the management information includes information indicating a group including the allocated resource block.

3. The base station device according to claim 1, wherein the management information includes information indicating one mentioned a selected set of said plurality of sets, in the first allocation.

4. The base station device according to claim 1, wherein the information about the difference between the first allocation and the second allocation is represented by 1 bit.

5. The base station device according to claim 1, wherein each of said plurality of groups includes the same predetermined kiloblock resources.

6. The base station device according to claim 1, in which mentioned predetermined number is variable.

7. The base station device according to claim 1, wherein the resource block included in each of these, at least two of groups is allocated to a mobile station in a first allocation.

8. The base station device according to claim 1, in which mentioned many of the groups mentioned is divided into many sets so that the said at least two groups which are contained in the first set, and mentioned at least two groups which are contained in the second set, formed in the frequency domain one by one.

9. The base station device according to claim 1, wherein the resource blocks, which are part of at least one of said plurality of groups and which are consecutive in the frequency domain are allocated to the mobile station in the second allocation.

10. The mobile station device, comprising:
a receiving module, configured to receive control information including both information indicating the resource block allocated to the mobile station device by using one of the first allocation and the second allocation and information about the difference between the first allocation and the second allocation, wherein resource blocks, each of which contains multiple�of subcarriers which are consecutive in the frequency domain, are divided into many groups, each of which contains a predefined number of resource blocks that are consecutive in the frequency domain; and
a decoding module configured to decode received data based on the control information;
moreover, in the first allocation mentioned many groups is divided into many sets, including the first set, which contains at least two groups that are part of the aforementioned plurality of groups and which are inconsistent in the frequency domain, and the second set containing at least two groups that differ from the mentioned part of the said plurality of groups and which are inconsistent in the frequency domain, and the mobile station device is allocated the resource block in said at least two groups that are contained within the selected set of said plurality of sets;
in the second allocation to the mobile station device is allocated the resource block in units of a plurality of resource blocks that are consecutive in the frequency domain; and
the information indicating the allocated resource block in the control information has the same number of bits in the first allocation and the second allocation.

11. Devices� mobile station according to claim 10, in which the control information includes information indicating a group including the allocated resource block.

12. The mobile station device according to claim 10, wherein the management information includes information indicating one mentioned a selected set of said plurality of sets, in the first allocation.

13. The mobile station device according to claim 10, in which information about the difference between the first allocation and the second allocation is represented by 1 bit.

14. The mobile station device according to claim 10, wherein each of said plurality of groups includes the same predetermined number of blocks of resources.

15. The mobile station device according to claim 10, in which the mentioned predetermined number is variable.

16. The mobile station device according to claim 10, wherein the resource block included in each of these, at least two of groups is allocated for the mobile station device in a first allocation.

17. The mobile station device according to claim 10, in which the said set of groups mentioned is divided into many sets so that the said at least two groups which are contained in the first set, and mentioned at least two groups which are contained in the second set, formed in the frequency domain alternately.

18. The mobile device� station according to claim 10, in which the resource blocks, which are part of at least one of said plurality of groups and which are consecutive in the frequency domain are allocated to the mobile station device in the second allocation.

19. The method of communication, comprising stages on which:
perform the allocation of the resource block to a mobile station by using one of the first allocation and the second allocation, wherein resource blocks, each of which contains many sub-carriers, which are consecutive in the frequency domain, are divided into many groups, each of which contains a predefined number of resource blocks that are consecutive in the frequency domain; and
transmit to the mobile station, control information including both information about the difference between the first allocation and the second allocation and information indicating the resource block allocated to a mobile station,
moreover, in the first allocation mentioned many groups is divided into many sets, including the first set, which contains at least two groups that are part of the aforementioned plurality of groups and which are inconsistent in the frequency domain, and the second set containing at least two groups that differ from the parts mentioned of many groups and Allaudin� inconsistent in the frequency domain, and the mobile station is allocated the resource block in said at least two groups that are contained within the selected set of said plurality of sets;
in the second mobile station, the resource block is allocated in units of a plurality of resource blocks that are consecutive in the frequency domain; and
the information indicating the allocated resource block in the control information has the same number of bits in the first allocation and the second allocation.

20. The method of communication, comprising stages on which:
accept control information including both information indicating the resource block allocated to a mobile station by using one of the first allocation and the second allocation and information about the difference between the first allocation and the second allocation, wherein resource blocks, each of which contains many sub-carriers, which are consecutive in the frequency domain, are divided into many groups, each of which contains a predefined number of resource blocks that are consecutive in the frequency domain; and
decoded by the decoding module, the received data on the basis of control information;
moreover, in the first allocation mentioned many groups is divided into many sets, including �first set, which contains at least two groups that are part of the aforementioned plurality of groups and which are inconsistent in the frequency domain, and the second set containing at least two groups that differ from the mentioned part of the said plurality of groups and which are inconsistent in the frequency domain, and the mobile station is allocated the resource block in said at least two groups that are contained within the selected set of said plurality of sets;
in the second mobile station, the resource block is allocated in units of a plurality of resource blocks that are consecutive in the frequency domain; and
the information indicating the allocated resource block in the control information has the same number of bits in the first allocation and the second allocation.

21. Integrated circuits for process control, comprising:
the allocation of the resource block to a mobile station by using one of the first allocation and the second allocation, wherein resource blocks, each of which contains many sub-carriers, which are consecutive in the frequency domain, are divided into many groups, each of which contains a predefined number of resource blocks that are consecutive in the frequency domain; and
transmission to the mobile station �sending information including information about the difference between the first allocation and the second allocation and information indicating the resource block allocated to a mobile station,
moreover, in the first allocation mentioned many groups is divided into many sets, including the first set, which contains at least two groups that are part of the aforementioned plurality of groups and which are inconsistent in the frequency domain, and the second set containing at least two groups that differ from the mentioned part of the said plurality of groups and which are inconsistent in the frequency domain, and the mobile station is allocated the resource block in said at least two groups that are contained within the selected set of said plurality of sets;
in the second mobile station, the resource block is allocated in units of a plurality of resource blocks that are consecutive in the frequency domain; and
the information indicating the allocated resource block in the control information has the same number of bits in the first allocation and the second allocation.

22. Integrated circuits for process control, comprising:
receiving control information including both information indicating the resource block allocated to a mobile station using�th one of the first allocation and the second allocation, and information about the difference between the first allocation and the second allocation, wherein resource blocks, each of which contains many sub-carriers, which are consecutive in the frequency domain, are divided into many groups, each of which contains a predefined number of resource blocks that are consecutive in the frequency domain; and
decoding, via a decoding module, the received data on the basis of control information;
moreover, in the first allocation mentioned many groups is divided into many sets, including the first set, which contains at least two groups that are part of the aforementioned plurality of groups and which are inconsistent in the frequency domain, and the second set containing at least two groups that differ from the mentioned part of the said plurality of groups and which are inconsistent in the frequency domain, and the mobile station is allocated the resource block in said at least two groups that are contained within the selected set of said plurality of sets;
in the second mobile station, the resource block is allocated in units of a plurality of resource blocks that are consecutive in the frequency domain; and
the information indicating the allocated resource block � control information, has the same number of bits in the first allocation and the second allocation.



 

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9 cl, 24 dwg

Receiver // 2539880

FIELD: radio engineering, communication.

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2 dwg

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