JP2008244559A - Mobile station apparatus, base station apparatus, radio communication system, control information receiving method, control information transmitting method, and program - Google Patents

Abstract

In a mobile station apparatus that communicates with a base station apparatus using a resource block allocated by the base station apparatus, the mobile station apparatus suppresses a calculation amount for searching for control information addressed to the mobile station apparatus. A control information receiving unit for receiving resource block allocation information for each mobile station device identification information for identifying a mobile station device or a mobile station device group, and error check information for each identification information corresponding to each of the resource block allocation information, The error check result for the resource block allocation information received by the control information receiving unit and the error check information for each identification information corresponding to the information is the mobile station device identification information of the own device or the mobile station device group to which the own device belongs. An allocation information selection unit that selects resource block allocation information that matches the mobile station apparatus identification information, and the selected resource block allocation Based on the information Te, the mobile station apparatus characterized by comprising a communication block designating unit for designating the candidate resource block for communicating with the base station apparatus.
[Selection] Figure 8

Description

  The present invention relates to a mobile station device, a base station device, a radio communication system, a control information receiving method, a control information transmitting method and a program, and in particular, between a mobile station device and a base station device using a resource block allocated by the base station device. The present invention relates to a mobile station apparatus, a base station apparatus, a wireless communication system, a control information receiving method, a control information transmitting method, and a program.

  As a 3rd generation cellular mobile communication system, a W-CDMA (Wideband Code Division Multiple Access) communication standard standardized by 3GPP (3rd Generation Partnership Project), an international standardization project There is a mobile phone service based on the standard in each country. In 3GPP, as a new standard for such a third generation wireless communication system, a communication technology called EUTRA (Evolved Universal Terrestrial Radio Access Network) or EUTRAN (Evolved Universal Terrestrial Radio Access Network) is being studied.

  In EUTRA, an OFDM (Orthogonal Frequency Division Multiplexing) scheme is used for the downlink, and an adaptive modulation and error correction (Adaptive Modulation and Coding Scheme) based on adaptive radio link control such as channel coding is used for the OFDM scheme. ; AMCS) technology is applied. AMCS is an error correction method, error correction coding rate, data modulation multi-value number, time and frequency according to the propagation path condition of each mobile station apparatus in order to efficiently perform high-speed packet data transmission. This is a communication method for switching various radio transmission parameters such as the axis code spreading factor and the number of multicode multiplexing. For example, in data modulation, as the propagation path condition becomes better, QPSK (Quadrature Phase Shift Keying) to 16 QAM (16 Quadrature Amplitude Modulation), 64 QAM (64 Quadrature Amplitude Modulation). The maximum throughput of the communication system can be increased by switching to higher-efficiency multi-value modulation such as (Modulation: 64-value quadrature amplitude modulation).

  In addition, as a channel arrangement method in the OFDM scheme, two methods, a spread-OFDM scheme and a non-spread-OFDM scheme, have been proposed. In the spread-OFDM system, the physical control channel and the physical data channel are multiplexed in the same frequency band by spreading code multiplexing. On the other hand, in the non-spread-OFDM scheme, the physical control channel and the physical data channel are multiplexed in time and frequency using either TDM (time division multiplexing), FDM (frequency division multiplexing), or a combination of TDM and FDM. .

In EUTRA, a downlink radio frame based on the OFDM scheme is divided into a frequency direction and a time direction, and data to each mobile station apparatus is mapped to each of the divided blocks. In order to perform this mapping, by using mobile station apparatus identification information for identifying each mobile station apparatus, allocation information indicating allocation of the mobile station apparatus to each block is transmitted from the base station apparatus.
FIG. 20 shows a conventional downlink resource allocation method. 20 shows resource allocation information (downlink resource allocation information), Cat. 2 and 3, four items of CRC masked with C-RNTI and communication data are described. Here, C-RNTI (Cell Specific Radio Network Temporary Identity) is 16-bit identification information that uniquely identifies a mobile station device within the base station device, and is between the mobile station device and the base station device. It is assigned to a mobile station device when communication is started.
Here, when the system bandwidth of the base station apparatus is 5 MHz, the resource allocation information has 25 resource blocks from resource block RB # 1 to resource block RB # 25, and therefore a 25-bit bitmap. (The bits are arranged so that each bit represents the position of the resource block).

  Generally, there are three categories of downlink control information. The first category, Cat. 1 is used for resource allocation and includes mobile station apparatus identification information and resource allocation information (downlink resource allocation information). The second category, Cat. 2 indicates a transport format of a downlink shared data channel PDSCH (Physical Downlink Shared Channel) allocated to each mobile station apparatus, and includes modulation scheme, payload size, and MIMO (Multiple Input Multiple Output) related information. The third category, Cat. 3 is information on HARQ (Hybrid Automatic Repeat Request), which includes a process number and a retransmission number in the case of asynchronous HARQ, and a retransmission number in the case of synchronous HARQ. The above three categories are downlink control information, and are transmitted by a downlink shared control channel PSCCH (described later).

As described above, the mobile station apparatus identification information is Cat. In the conventional example shown in FIG. The mobile station apparatus identification information that should be included in 1 is the CRC masked with C-RNTI as Cat. 2 or Cat. 3 is arranged. Therefore, in this conventional example, the resource allocation information is referred to as Cat. 1 and Cat. 2 and Cat. 3 is a Cat. Let's call it 2,3.
Also, CRC masked with C-RNTI is encoded so that a bit string obtained by performing cyclic redundancy check (CRC) on a certain data sequence becomes C-RNTI which is mobile station apparatus identification information. Represents that.
The communication data means data transmitted from the base station apparatus side to the mobile station apparatus, and is transmitted through a downlink shared data channel PDSCH (described later).
Here, the CRC masked with C-RNTI is Cat. 2 and 3 (which may be included in either Cat.2 or Cat.3), and the subject of CRC masked with C-RNTI is Cat. 1 and Cat. All bits 2 and 3 together.

Next, specific operations of the conventional example will be described.
Conventionally, in a mobile station apparatus, first, Cat. 1 and Cat. The resource block designated by the resource allocation information in 1 is detected. Now, assuming that the resource allocation information is composed of a 25-bit bitmap {0, 1, 0, 1, 0, 0,..., 0}, two “RB # 2” and “RB # 4” It can be seen that one resource block is specified.
Next, the mobile station apparatus sets the Cat. 2 and 3, respectively, and simultaneously decodes information for demodulating communication data. 1 and Cat. C-RNTI is calculated by performing CRC masked with C-RNTI on all bits including 2 and 3, and matches the C-RNTI already assigned to the own station. Collate.

If the C-RNTI matches, it is determined that the resource block is addressed to the own station, and data is read from the communication data included in the resource block.
For example, there are Patent Documents 1 and 2 regarding the above-described conventional techniques.
JP 2001-237803 A JP 2004-297756 A

  However, in the conventional method, information to be transmitted as control information by the base station apparatus in the downlink includes downlink control information and uplink control information, and each control information includes: Resource allocation information for the number of mobile station devices and Cat. There are two and three. For this reason, as the number of mobile station apparatuses or resource blocks increases, the amount of control information increases, and in order to search for control information addressed to the own apparatus in the mobile station apparatus, CRC masked with C for all control information Since it is necessary to calculate −RNTI, there is a problem that the amount of calculation increases.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a base station apparatus, a mobile station apparatus, and control information in which the amount of calculation for searching for control information addressed to the mobile station apparatus is suppressed. The object is to provide a transmission method, a control information reception method, and a program.

  The present invention has been made to solve the above-described problem, and the mobile station apparatus of the present invention uses the resource block having a predetermined time zone and frequency band assigned by the base station apparatus, and uses the base station apparatus. Receiving resource block allocation information for each mobile station device identification information for identifying a mobile station device or a group of mobile station devices, and error check information for each identification information corresponding to each of the resource block allocation information Control information receiving unit, error checking is performed on the resource block allocation information received by the control information receiving unit and the error checking information for each identification information corresponding to the information, and the result of the error checking is Select resource block allocation information that matches the mobile station device identification information or the mobile station device identification information of the mobile station device group to which it belongs. And an allocation information selection unit that reduces processing load, and a communication block designation unit that designates resource block candidates to communicate with the base station apparatus based on the resource block allocation information selected by the allocation information selection unit. It is characterized by that.

As a result, the mobile station apparatus can select the resource block allocation information addressed to itself by performing the error check only on the resource block allocation information and the error check information for each identification information. And the amount of calculation for searching for control information addressed to the own apparatus can be suppressed.
In addition, when the mobile station apparatus identification information identifies a mobile station apparatus group, the number of resource block allocation information is reduced, so that the amount of error checking is reduced and the control information addressed to the own apparatus is searched. The amount of calculation can be suppressed.

  The mobile station apparatus of the present invention is the above-described mobile station apparatus, wherein the control information receiving unit further receives a communication parameter corresponding to each resource block, and the communication block designating unit is configured to transmit the resource block And specifying that communication is performed using the communication parameter corresponding to the resource block.

  Moreover, the mobile station apparatus of the present invention is the above-described mobile station apparatus, wherein the allocation information selection unit includes resource block allocation information received by the control information reception unit and error information for each identification information corresponding to the information. And error checking is performed, and resource block allocation information that matches the mobile station apparatus identification information of the mobile station apparatus group to which the own apparatus belongs is selected.

  As a result, the mobile station apparatus becomes resource block allocation information for each mobile station apparatus group. Therefore, by including resource block allocation for a plurality of mobile station apparatuses in one resource block allocation information, the number of resource block allocation information The amount of control information can be reduced, and excellent transmission efficiency can be obtained.

  Moreover, the mobile station apparatus of the present invention is the above-described mobile station apparatus, wherein the control information receiving unit corresponds to each resource block in addition to the resource block allocation information and the error check information for each identification information. The communication parameter and the block-by-block error check information are received, and the communication block specifying unit corresponds to the resource block specified by the resource block allocation information selected by the allocation information selecting unit among the communication parameters. And error checking information for each block, and a resource block whose result matches the identification information for identifying its own device is designated as a resource block that communicates with the base station device. Features.

  As a result, the mobile station apparatus performs error checking only on the resource block allocation information and the error checking information for each identification information, thereby selecting the resource block allocation information addressed to the group including the own apparatus, and adding the resource block allocation information to the resource block allocation information. By performing an error check on the communication parameters placed in the resource block specified by the user, it is possible to select communication parameters and resource blocks addressed to the device itself. The amount of calculation for searching for control information addressed to the apparatus can be suppressed.

  The mobile station apparatus of the present invention is the above-described mobile station apparatus, wherein the communication block designating unit is a resource block including communication data and block-by-block error check information, and the selected resource block allocation The resource block specified by the information is received, the communication data included in the resource block and the error check information for each block are checked, and the result of the error check matches the information for identifying the own device. In this case, the resource block is designated as a resource block that communicates with the base station apparatus.

  As a result, the mobile station apparatus performs error checking only on the resource block allocation information and the error checking information for each identification information, thereby selecting the resource block allocation information addressed to the group including the own apparatus, and adding the resource block allocation information to the resource block allocation information. By performing error checking on the communication data placed in the resource block specified by the user, it is possible to select communication parameters and communication data addressed to the device itself. The amount of calculation for searching for control information addressed to the apparatus can be suppressed.

  Further, the base station apparatus of the present invention allocates a resource block consisting of a predetermined time zone and frequency band to a mobile station apparatus, and in the base station apparatus for communication, resources allocated to one mobile station apparatus or mobile station apparatus group A mobile station apparatus or a group of mobile station apparatuses that generate resource block allocation information representing a block and whose error check result is targeted for the resource block allocation information and the error check information for each identification information. A scheduling unit for reducing the processing load of the mobile station apparatus by generating error check information for each identification information serving as mobile station apparatus identification information for identifying the mobile station apparatus, resource block allocation information generated by the scheduling unit, and errors for each identification information And a control information transmitting unit that transmits the inspection information.

  Moreover, the base station apparatus of the present invention is the above-described base station apparatus, wherein the scheduling unit generates a communication parameter used for communication with the mobile station apparatus for each resource block, and the control information transmission unit includes: The communication parameter is transmitted in a corresponding resource block.

  The base station apparatus of the present invention is the above-described base station apparatus, wherein the scheduling unit generates resource block allocation information representing a resource block allocated to one mobile station apparatus group, and the resource block allocation information And error check results for each identification information, and error check results for each identification information become mobile station device identification information for identifying mobile station device groups targeted by the resource block allocation information. Characterized by

  The base station apparatus of the present invention is the above-described base station apparatus, wherein the scheduling unit communicates an error check result for the communication parameter and the error check information for each block using the communication parameter. Generating error information for each block as identification information for identifying a mobile station apparatus to be transmitted, and the control information transmitting unit transmits the error information for each block in a corresponding resource block together with the communication parameter. Features.

  The base station apparatus according to the present invention is the above-described base station apparatus, wherein an error check result for communication data included in one resource block and the error check information for each block is a transmission destination of the communication data. A communication data transmitting unit that generates error checking information for each block, which is identification information for identifying the mobile station apparatus, and arranges and transmits the error data in a corresponding resource block together with the communication data.

  The wireless communication system of the present invention includes a base station device and a mobile station device that communicates with the base station device using a resource block having a predetermined time band and frequency band allocated by the base station device. In the wireless communication system provided, the base station device generates resource block allocation information indicating a resource block allocated to one mobile station device or a group of mobile station devices, and checks the error for each resource block allocation information and the identification information. A scheduling unit for generating error check information for each identification information, which is mobile station apparatus identification information for identifying a mobile station apparatus or a group of mobile station apparatuses for which the resource block allocation information is an error check result for information; The resource block allocation information generated by the scheduling unit and error check information for each identification information are transmitted. And a control information transmission unit, wherein the mobile station apparatus includes resource block allocation information for each mobile station apparatus identification information for identifying a mobile station apparatus or a group of mobile station apparatuses, and identification information corresponding to each of the resource block allocation information A control information receiving unit for receiving error check information, and error checking is performed on the resource block allocation information received by the control information receiving unit and the error check information for each identification information corresponding to the information. The allocation information selection unit that selects resource block allocation information that matches the mobile station device identification information of the own device or the mobile station device identification information of the mobile station device group to which the own device belongs, and the allocation information selection unit A communication block designating unit for designating resource block candidates to communicate with the base station apparatus based on the selected resource block allocation information; Characterized in that it Bei.

  Further, the control information receiving method of the present invention is a control information receiving method in a mobile station apparatus that communicates with the base station apparatus using a resource block consisting of a predetermined time zone and frequency band allocated by the base station apparatus. The mobile station apparatus receives resource block allocation information for each mobile station apparatus identification information for identifying a mobile station apparatus or a mobile station apparatus group, and error information for each identification information corresponding to each of the resource block allocation information. 1, and the mobile station apparatus performs an error check on the received resource block allocation information and the error check information for each identification information corresponding to the received information. Second selection of resource block allocation information that matches the station apparatus identification information or the mobile station apparatus identification information of the mobile station apparatus group to which the own apparatus belongs And process, the mobile station apparatus, based on the selected resource block allocation information, characterized by comprising a third step of specifying a candidate resource block for communicating with the base station apparatus.

  Also, the control information transmission method of the present invention is a control information transmission method in a base station apparatus that performs communication by allocating resource blocks having a predetermined time band and frequency band to a mobile station apparatus. A first step of generating resource block allocation information representing a resource block allocated to a mobile station device or a group of mobile station devices, and the base station device targets the resource block allocation information and the error check information for each identification information A second step of generating error check information for each identification information that becomes the mobile station apparatus identification information for identifying the mobile station apparatus or mobile station apparatus group to which the resource block allocation information is an object, The station apparatus comprises a third process of transmitting the resource block allocation information and the error check information for each identification information. .

  Further, the program of the present invention uses a resource block consisting of a predetermined time zone and frequency band assigned by a base station device, and a computer provided in the mobile station device that communicates with the base station device, A control information receiving unit that receives resource block allocation information for each mobile station device identification information for identifying a mobile station device group, and error check information for each identification information corresponding to each of the resource block allocation information, and the control information receiving unit includes: An error check is performed on the received resource block allocation information and the error check information for each identification information corresponding to the information, and the result of this error check is the mobile station device identification information of the own device or the mobile station to which the own device belongs. Allocation information selection unit for selecting resource block allocation information that matches mobile station apparatus identification information of the apparatus group, the allocation information selection There Based on the selected resource block allocation information, to function as the communication block designating unit for designating the candidate resource block for communicating with the base station apparatus.

  Further, the program of the present invention allocates a resource block having a predetermined time band and frequency band to a mobile station apparatus, and allocates a computer included in a communicating base station apparatus to one mobile station apparatus or mobile station apparatus group. A mobile station apparatus or a mobile station that generates resource block allocation information representing the resource block, and an error check result for the resource block allocation information and the error check information for each identification information is the resource block allocation information As a scheduling unit that generates error check information for each identification information serving as mobile station apparatus identification information for identifying a device group, and a control information transmission unit that transmits the resource block allocation information generated by the scheduling unit and the error check information for each identification information Make it work.

  According to the present invention, it is possible to suppress the amount of calculation for finding control information addressed to the mobile station device.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a configuration of a downlink radio frame used in a radio communication system according to first to third embodiments described below. In the figure, a downlink radio frame is composed of blocks called resource blocks PRB (Physical Resource Block) which are units of radio resources used in communication. One resource block PRB is defined as having a frequency width Bprb corresponding to one or more subcarriers and a time length (1 subslot) corresponding to one or more OFDM symbols.

  Here, in FIG. 1, with respect to the frequency axis, the frequency bandwidth Ball of the entire downlink is 5 MHz, the guard bandwidth is 0.5 MHz, the frequency bandwidth Bprb of one resource block PRB is 180 kHz, and the frequency bandwidth of the subcarrier Bsc is 15 kHz. As for the time axis, one radio frame length is set to 10 ms, and a unit transmission time (subframe) TTI (Transmission Time Interval) is set to 1 ms (millisecond). One subframe is composed of two subslots, and one subslot is composed of seven OFDM symbols (OFDM symbol length is Ts). In this radio frame configuration, one radio frame includes 25 resource blocks PRB in the frequency axis direction and 20 in the time axis direction, that is, a total of 500 resource blocks PRB. However, FIG. 1 does not show the guard band.

The data transmitted on the downlink includes the following, which are mapped in each subframe.
(A) User data used by the user (communication data)
(B) Mobile station apparatus identification information (UEID; User Equipment IDentity), modulation scheme, error correction scheme, information required for HARQ, downlink control information such as data length, and uplink control information (c) user data and downlink Known pilot signal used for channel estimation when demodulating control information and uplink control information

In addition, the following is mapped to the first subframe of the radio frame.
(D) Synchronization signal for synchronizing frames (e) Common control information for notifying the configuration of the entire frame and others are also mapped.
(F) Paging information (g) MBMS (Multimedia Broadcast Multicast Service) information

As channels for transmitting these data, the downlink physical channel includes the following seven channels.
Downlink shared data channel PDSCH (Physical Downlink Shared Channel)
Downlink shared control channel PSCCH (Physical Shared Control Channel)
Downlink pilot channel DPICH (Downlink Pilot Channel)
Synchronization channel SCH (Synchronization Channel)
Common control channel CCPCH (Common Control Physical Channel)
・ Paging channel PCH (Paging Channel)
Multicast channel MCH (Multicast Channel)

  The subframe shown in FIG. 1 is a subframe for transmitting data addressed to the mobile station apparatus. This subframe includes a downlink pilot channel DPICH, a downlink shared control channel PSCCH, and a downlink shared data channel PDSCH. And are included. In subslot 1 in the subframe, downlink pilot channel DPICH and downlink shared control channel PSCCH are allocated to the first OFDM symbol, and downlink shared control channel PSCCH is allocated to the second and third OFDM symbols. The downlink shared data channel PDSCH is arranged in the fourth and subsequent OFDM symbols. In subslot 2, downlink pilot channel DPICH and downlink shared data channel PDSCH are arranged in the first OFDM symbol, and downlink shared data channel PDSCH is arranged in the second and subsequent OFDM symbols.

The downlink pilot channel DPICH is a channel for transmitting the data of (c), and performs power measurement when performing cell search or handover, CQI (Channel Quality Indicator) measurement for performing adaptive modulation, And used for channel estimation for demodulating the downlink shared control channel PSCCH and the downlink shared data channel PDSCH.
The downlink shared control channel PSCCH is a channel for transmitting the data (b). Here, in the downlink control information of the downlink shared control channel PSCCH, the resource block in which the modulation scheme of the resource block PRB, the data length, and the data addressed to the mobile station apparatus are arranged as control information necessary for demodulation of communication data PRB position, information necessary for HARQ, and the like are included. Uplink control information includes power control, transmission timing control of resource block PRB, position of resource block PRB from which the mobile station apparatus transmits data, modulation scheme, The data length, HARQ ACK / NACK for data transmitted by the mobile station apparatus, and the like are included.

  The downlink shared data channel PDSCH is a channel for transmitting the data (a), that is, communication data. When demodulating this communication data, information on the modulation scheme and data length transmitted on the downlink shared control channel PSCCH is used. In addition, in order to demodulate the downlink shared control channel PSCCH, channel estimation is performed using the pilot signal of the downlink pilot channel DPICH. The downlink shared data channel PDSCH can be shared by a plurality of mobile station apparatuses.

  FIG. 2 shows one resource block PRB expressed by an array C (f, t). Here, f and t represent a subcarrier number and an OFDM symbol number, respectively. Since the frequency bandwidth Bprb of the resource block PRB is 180 kHz and the frequency bandwidth Bsc of the subcarrier is 15 kHz, one resource block PRB includes 12 subcarriers. Therefore, 1 ≦ f ≦ 12. One subslot is composed of seven OFDM symbols. This is a case of a Short CP (Short Cyclic Prefix) with an OFDM symbol length Ts of 0.07 ms. Also, it is possible to extend the guard interval length of the OFDM symbol to make a Long CP. In this case, for example, if the OFDM symbol length Ts is 0.08 ms, 6 OFDM symbols are included in one subslot. become. Therefore, in the case of the Short CP, 1 ≦ t ≦ 7, and in the case of the Long CP, 1 ≦ t ≦ 6.

Similarly to the downlink, uplink radio frames are blocks each having a predetermined frequency band and time band, and are composed of resource blocks that are radio resource units used in communication. Hereinafter, this block is referred to as PRU (Physical Resource Unit).
For example, the entire uplink bandwidth (uplink frequency bandwidth) is 5 MHz, the PRU bandwidth is 180 kHz, the subcarrier frequency bandwidth Bsc is 15 kHz, one radio frame length is 10 ms, and the user unit transmission time TTI (Transmission Time) When (Interval) is 1.0 ms (subframe) and the guard band is 0.5 MHz, one radio frame is composed of 25 PRUs in the frequency axis direction and 20 PRUs in the time axis direction, that is, 500 PRUs. Is done.
FIG. 3 is a diagram illustrating a configuration example of the uplink PRU. The PRU includes two SBs (Short Blocks) SB # 1 and SB # 2, and six LBs (Long Blocks) LB # 1 to LB # 6. SB and LB are determined from a subchannel as a frequency component corresponding to one or a plurality of subcarriers and a subslot as a time component corresponding to one or a plurality of OFDM symbols.

  FIG. 4 shows an overview of channel arrangement in the downlink. Here, one subframe corresponding to a frequency width of 5 MHz (including a guard band of 0.5 MHz not shown) is shown. One resource block PRB has a frequency bandwidth Bprb of 180 kHz, and 25 resource blocks PRB are included in one sub-slot and 5 MHz width. One subframe is composed of two subslots (subslot 1 and subslot 2). In the first OFDM symbol of each subslot, downlink pilot channel DPICH is arranged for every three subcarriers, that is, C (x, 1): x = 2,5,8,11. Further, the downlink shared control channel PSCCH is a region not used for the downlink pilot channel DPICH in the first OFDM symbol of the subslot 1, that is, C (x, 1): x ≠ 2, 5, 8, 11 And the second and third OFDM symbols in subslot 1, that is, C (x, 2): x = 1 to 12 and C (x, 3): x = 1 to 12. In the remaining areas of subslot 1 and subslot 2, downlink shared data channel PDSCH is arranged. In FIG. 4, the downlink shared data channel PDSCH is divided into areas allocated to the resource blocks PRB and indicated as resource blocks PRB1-1 to 1-25 and 2-1 to 2-25.

  The resource allocation to the mobile station apparatus is performed using the downlink shared control channel PSCCH arranged as described above. Here, as described above, the downlink shared control channel PSCCH is arranged only in the subslot 1, but the resource block PRB in the subslot 1 and the resource block PRB in the subslot 2 are associated in advance. When the resource block PRB in subslot 1 is designated to the mobile station apparatus by the downlink shared control channel PSCCH arranged in slot 1, the resource block PRB in subslot 2 is also automatically determined by the association. . For this reason, the load of control information can be reduced compared to the case where different resource allocation is performed for each subslot using the downlink shared control channel PSCCH in each subslot. In this way, for one subframe, resource allocation is specified for 25 resource blocks PRB.

FIG. 5 shows control information transmitted through the downlink shared control channel PSCCH. As described above, the downlink shared control channel PSCCH includes downlink control information or uplink control information.
The downlink control information includes three categories Cat. 1, Cat. 2, Cat. 3 pieces of information. Cat. 1 is used for resource allocation and includes mobile station apparatus identification information and downlink resource allocation information. Cat. 2 shows the transport format of the downlink shared data channel PDSCH allocated to each mobile station apparatus, and includes modulation scheme, payload size, and MIMO (Multiple Input Multiple Output) related information. Cat. 3 is information about HARQ, which includes a process number and a retransmission number in the case of asynchronous HARQ, and a retransmission number in the case of synchronous HARQ.

  Similarly, uplink control information includes three categories Cat. 1, Cat. 2, Cat. 3 pieces of information. Cat. 1 is used for resource transmission permission and includes mobile station apparatus identification information and resource allocation information for uplink data transmission. Cat. 2 indicates a transport format when each mobile station apparatus transmits uplink data, and includes a modulation scheme, a payload size, and MIMO related information. Cat. 3 is information on HARQ and includes a retransmission number in order to use synchronous HARQ in the uplink. The uplink control information further includes an uplink time synchronization signal. This uplink time synchronization signal is necessary for synchronization processing for adjusting the difference in data arrival time caused by the variation in the distance between the base station apparatus and the mobile station apparatus at the time of uplink transmission on the mobile station apparatus side. It is. Hereinafter, Cat. 2 and Cat. 3 together with the information of Cat. 2 and 3 (communication parameters).

Here, the data size of each piece of information is as follows. The mobile station apparatus identification information uses a unique 16-bit C-RNTI (Cell Specific Radio Network Temporary Identity) that can be identified in the base station apparatus.
The resource allocation information of the downlink control information uses a bit map of several resource blocks PRB and represents which resource block PRB the mobile station apparatus should use. Here, since there are 25 resource blocks PRB (see FIG. 3), resource allocation information requires 25 bits. FIG. 6 shows an example of resource allocation information. In this example, resource block PRB # 3 and resource block PRB # 24 are allocated to mobile station apparatus # 1, resource block PRB # 2 is allocated to mobile station apparatus # 2, and mobile station apparatus # 3 is allocated. Are assigned resource block PRB # 1 and resource block PRB # 25.

In the resource allocation information of the uplink control information, consecutive blocks are designated by a start block number (5 bits) and an end block number (5 bits). This is because in the uplink, since a single carrier transmitter is used, it is necessary to perform allocation in consecutive blocks.
The combination of the modulation scheme and the coding rate of the error correction code is QPSK modulation and coding rate 1/8, QPSK modulation and coding rate 1/4, QPSK modulation and coding rate 1/2, QPSK modulation and coding rate 1/2 2/3, 16QAM modulation and coding rate 1/2, 16QAM modulation and coding rate 2/3, 64QAM modulation and coding rate 1/2, 64QAM modulation and coding rate 3/5, 64QAM modulation and coding rate 2/3, 64QAM modulation and coding rate 3/4 can be used, and four of them are used. Therefore, 2 bits are required to identify the four combinations.

The payload size represents 6 bits of information amount of data transmitted on the downlink shared data channel PDSCH. The MIMO related information uses 2 bits to represent the number of antennas, the number of streams, and MIMO control information. The HARQ process number is information for identifying the HARQ process and requires 3 bits. The HARQ retransmission number indicates the order of retransmission within a certain HARQ process and is represented by 2 bits. The uplink time synchronization signal uses 1 bit to indicate a difference from the current synchronization time of the mobile station apparatus.
Thus, the total number of bits of the downlink control information is 56 bits, and the total number of bits of the uplink control information is 39 bits. Therefore, the control information of 95 bits in total is transmitted by the downlink shared control channel PSCCH.

[First Embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 7 illustrates a configuration of a downlink shared control channel PSCCH (resource allocation information, CRC masked with C-RNTI, Cat. 2, 3) and a downlink shared data channel PDSCH (communication data) in the present embodiment. In this embodiment, the system bandwidth of the base station apparatus is 5 MHz. Here, since each resource allocation information has a system bandwidth of the base station apparatus of 5 MHz and possesses 25 resource blocks PRB, the resource block PRB allocated to the mobile station apparatus corresponding to the resource allocation information. Is composed of a 25-bit bitmap indicating each bit.

CRC masked with C-RNTI is a data sequence obtained by performing cyclic redundancy check CRC by linking the data sequence (CRC masked with C-RNTI itself) to the target data sequence. The CRC masked with C-RNTI is represented by Cat. 1 included. That is, in this embodiment, Cat. 1 includes resource allocation information and CRC masked with C-RNTI, and is arranged at the head of the subframe as shown in FIG. In FIG. 7, only one set of resource allocation information and CRC masked with C-RNTI is arranged at the head of the subframe, but there are a plurality of sets of resource allocation information and CRC masked with C-RNTI. May exist. The subject of CRC masked with C-RNTI is Cat. 1 (resource allocation information), and when the cyclic redundancy check CRC is performed on the resource allocation information and the CRC masked with C-RNTI, the result is the C-RNTI of the mobile station apparatus targeted by the resource allocation information It becomes. Cat. 2 and 3 are arranged at the head of the corresponding resource block PRB as shown in FIG. That is, Cat. Which is a communication parameter used for transmission / reception of the resource block PRB. 2 and 3 are arranged in the corresponding resource block PRB. In FIG. 7, the illustration of DPICH is omitted.
The above three categories (Cat. 1 and Cat. 2, 3) are downlink control information and are transmitted by the downlink shared control channel PSCCH. Further, communication data transmitted from the base station apparatus to the mobile station apparatus is transmitted through the downlink shared data channel PDSCH.

Next, configurations of a base station apparatus and a mobile station apparatus that realize the wireless communication system according to the present embodiment described above will be described.
FIG. 8 is a schematic block diagram showing the configuration of the base station apparatus 10. The base station apparatus 10 includes a data control unit 101, a data modulation unit 102, an OFDM modulation unit 103, a radio unit 104, a channel estimation unit 105, and DFT-S-OFDM (Discrete Fourier Transform-spread-OFDM: discrete). (Fourier transform spread OFDM) demodulation section 106, data demodulation section 107, control data extraction section 108, scheduling section 109, and radio resource control section 110.

Communication data and control data for each mobile station apparatus (mobile station apparatus 20 in FIG. 9 described later) and control data are input to the data control unit 101. In response to an instruction from the scheduling unit 109, the data control unit 101 maps the control data to the common control channel CCPCH, the synchronization channel SCH, the paging channel PCH, the downlink pilot channel DPICH, and the downlink shared control channel PSCCH, and transmits the communication data to the downlink. Map to link shared data channel PDSCH. Also, the data control unit 101 arranges a CRC for PDSCH in the PDSCH of the same resource block PRB.
Here, the data control unit 101 includes a PSCCH generation control unit (control information transmission unit) 113. The PSCCH generation control unit 113 includes resource allocation information received from the scheduling unit 109, CRC masked with C-RNTI, Cat. 2 and 3 are arranged in the downlink shared control channel PSCCH as shown in FIG. 7, and the downlink shared control channel PSCCH is mapped according to the frequency scheduling information from the scheduling unit 109.

Data modulation section 102 modulates the data of each channel input from data control section 101 according to the data modulation scheme and encoding scheme of MCS information instructed from scheduling section 109 and outputs the result to OFDM modulation section 103.
The OFDM modulation unit 103 performs OFDM signal processing such as serial / parallel conversion, IFFT (Inverse Fast Fourier Transform) processing, CP (Cyclic Prefix) insertion, and filtering on the input signal from the data modulation unit 102. To generate an OFDM signal and output it to the radio section 104.
The radio unit 104 up-converts the data from the OFDM modulation unit 103 to a radio frequency and transmits it to the mobile station apparatus via the antenna in the downlink. On the other hand, for uplink, when data is received from the mobile station device via the antenna, it is down-converted to a baseband signal and output to channel estimation section 105 and DFT-S-OFDM demodulation section 106.

Channel estimation section 105 estimates radio channel characteristics from the uplink pilot signal that is data input from radio section 104, and outputs the estimation result to DFT-S-OFDM demodulation section 106 and scheduling section 109.
The DFT-S-OFDM demodulation unit 106 performs filtering, CP removal, DFT processing, and IFFT processing on the received data from the radio unit 104, and performs DFT- based on the radio channel estimation result from the channel estimation unit 105. After performing S-OFDM demodulation, the data is output to the data demodulator 107.
Data demodulating section 107 demodulates the received data input from DFT-S-OFDM 106 in accordance with uplink MCS information specified by scheduling section 109 and outputs the demodulated data to control data extracting section 108.

  The control data extraction unit 108 separates the received data into communication data and control data (uplink data related control information and uplink data non-related control information) and passes them to the upper layer. The uplink data related control information includes information such as the transport block size, and the uplink data non-related control information includes downlink CQI feedback information and downlink HARQ ACK / NACK information. The control data extraction unit 108 also passes downlink CQI information of the control data to the scheduling unit 109.

The scheduling unit 109 includes a DL (Down Link) scheduling unit 111 that performs downlink scheduling and a UL scheduling unit 112 that performs uplink (Up Link) scheduling.
The DL scheduling unit 111 is based on CQI information received from the mobile station device, information on resource blocks PRB that can be used by each mobile station device notified from the radio resource control unit 110, control information such as intermittent transmission / reception cycles, and buffer status. Then, scheduling processing for mapping communication data (user data) to each downlink channel and calculation of MCS information for modulating each data are performed.
The UL scheduling unit 112 includes uplink radio channel estimation results notified from the channel estimation unit 105, information on PRUs usable by each mobile station device notified from the radio resource control unit 110, intermittent transmission / reception cycles, buffer status Based on the control information such as, the mobile station apparatus performs scheduling processing for mapping communication data to each uplink channel, and calculates MCS information for modulating each data.

Scheduling section 109 generates resource allocation information and CRC masked with C-RNTI for each mobile station apparatus based on the scheduling processing result of DL scheduling section 111, and based on the calculation result of MCS information and the retransmission request from the mobile station apparatus. Cat. For each resource block PRB. 2 and 3 are generated. Scheduling section 109 includes these resource allocation information, CRC masked with C-RNTI, Cat. 2 and 3 are notified to the data control unit 101 and transmitted.
In the present embodiment, the data control unit 101, the data modulation unit 102, the OFDM modulation unit 103, and the radio unit 104 function as a control information transmission unit.
Also, the radio resource control unit 110 notifies the scheduling unit 109 of control information such as information on the resource block PRB or PRU that can be used by each mobile station apparatus, intermittent transmission / reception cycle, and buffer status.

  FIG. 9 is a schematic block diagram showing the configuration of the mobile station device 20 in the present embodiment. The mobile station apparatus 20 includes a transmission unit 21, a reception unit 22, a radio unit 201, a scheduling unit 202, a radio resource control unit 203, and a radio control unit 204. The transmission unit 21 includes a data control unit 211, a data modulation unit 212, and a DFT-S-OFDM modulation unit 213. The reception unit (control information reception unit) 22 includes a channel estimation unit 221 and an OFDM A demodulator 222, a data demodulator 223, and a control data extractor 224 are provided.

  Communication data and control data (uplink data related control information and uplink data unrelated control information) are input to the data control unit 211. In response to an instruction from the scheduling unit 202, the data control unit 211 maps the input communication data and control data to an uplink block (PRU; Physical Resource Unit) and outputs the result to the data modulation unit 212.

Data modulation section 212 modulates each data input from data control section 211 according to the data modulation scheme and coding scheme of MCS information instructed from scheduling section 202, and outputs the data to DFT-S-OFDM modulation section 213 To do.
The DFT-S-OFDM modulation unit 213 performs serial / parallel conversion, multiplication processing of spreading codes and scrambling codes, DFT (Discrete Fourier Transformation) conversion, subcarrier mapping processing on the data input from the data modulation unit 212 , IFFT processing, CP insertion, filtering and other DFT-spread OFDM signal processing are performed to generate a DFT-spread OFDM signal and output it to the radio section 201. In this embodiment, the DFT-spread OFDM scheme is used for the uplink communication scheme, but other schemes can be applied. For example, a single carrier scheme such as the VSCRF-CDMA scheme is applicable. A multi-carrier scheme such as the OFDM scheme may be used.

  The radio unit 201 up-converts the data from the DFT-S-OFDM modulation unit 213 to the radio frequency specified by the radio control unit 204, and uplinks from the antenna to the base station apparatus (base station apparatus 10 in FIG. 8). Send with. On the other hand, for the downlink, radio section 201 receives a signal from base station apparatus 10 via an antenna, down-converts it to a baseband signal, and outputs it to channel estimation section 221 and OFDM demodulation section 222.

  Channel estimation section 221 estimates the radio channel characteristics using downlink pilot channel DPICH from radio section 201, and passes the estimation result to OFDM demodulation section 222. Channel estimation section 221 converts the radio channel estimation result into CQI information, and outputs the CQI information to data control section 211 and scheduling section 202. This CQI information is used to notify the base station apparatus 10 of the radio propagation path estimation result.

The OFDM demodulator 222 performs OFDM signal processing such as CP removal, filtering, and FFT processing on the reception data from the radio unit 201, and performs OFDM demodulation based on the radio channel estimation result from the channel estimation unit 221. And output to the data demodulator 223.
The data demodulator 223 demodulates the received data according to the downlink MCS information extracted by the control data extractor 224 and outputs the demodulated data to the control data extractor 224.

  The control data extraction unit (communication block designation unit) 224 separates the received data into communication data (downlink shared data channel PDSCH) and control data (downlink shared control channel PSCCH), and passes them to the upper layer. In addition, the PSCCH reception control unit (assignment information selection unit) 225 of the control data extraction unit 224 performs a cycle for resource allocation information and CRC masked with C-RNTI (error check information for each identification information) among the separated control data. The redundancy check CRC is performed, and the resource allocation information whose result is the C-RNTI of the own device is selected as the information of the own device. Next, the PSCCH reception control unit 225 performs Cat. From the resource block PRB specified by the previously selected resource allocation information. 2 and 3 (communication parameters) are acquired, and the control data extraction unit 224 instructs the data demodulation unit 223 and the OFDM demodulation unit 222 to receive the PDSCH of the resource block PRB specified by the resource allocation information. At this time, the control data extraction unit 224 receives the Cat. 2 and 3, downlink MCS information and retransmission information are acquired and passed to data demodulator 223 and OFDM demodulator 222. Also, the PSCCH reception control unit 225 passes uplink MCS information and resource allocation information to the scheduling unit 202.

The scheduling unit 202 sends communication data and control data to the data control unit 211, the data modulation unit 212, and the DFT-S-OFDM modulation unit 213 according to the uplink MCS information and scheduling information received from the base station apparatus. Instruct to map to physical channel.
The radio resource control unit 203 manages usable resource block PRB or PRU information, intermittent transmission / reception cycles, etc., and passes these management information to the transmission unit 21, the reception unit 22, the scheduling unit 202, and the radio control unit 204. The entire mobile station apparatus 20 is controlled.

Processing contents in the base station apparatus will be described.
The base station apparatus uses a Cat. With CRC masked with C-RNTI as a downlink shared control channel PSCCH. 1 and Cat. 2 and 3 and the downlink shared data channel PDSCH is transmitted. Here, CRC masked with C-RNTI means Cat. 1 is a CRC code associated with C-RNTI. In this embodiment, Cat. 1 is obtained by taking an exclusive OR of a CRC code (a remainder obtained by dividing Cat.1 by a CRC generator polynomial) obtained by performing normal cyclic redundancy check CRC on 1 and C-RNTI.
Control in the series of base station apparatuses is performed by Cat. 1 and Cat. 2 and 3, and the PSCCH generation control unit 113 performs these transmissions.

Here, the specific processing content in the mobile station apparatus 20 is demonstrated using FIG. 7 and FIG.
The C-RNTI is composed of 16 bits, and when performing the following processing, the C-RNTI is already notified to the mobile station device 20 from the base station device 10 side, and is stored in the storage unit included in the mobile station device 20. It is assumed that
In the mobile station apparatus 20, the Cat. 1 (Sa1), the PSCCH reception control unit 225 receives the Cat. Cyclic redundancy check is performed for all 1 (bits including resource allocation information and CRC masked with C-RNTI) (Sa2). As a result, when it matches the C-RNTI assigned to the own station (Sa3), the PSCCH reception control unit 225 detects the resource block PRB specified by the resource assignment information. For example, if the resource allocation information is composed of a 25-bit bitmap of {0, 1, 0, 1, 0, 0,..., 0}, 2 “RB # 2” and “RB # 4” It can be seen that two resource blocks PRB are designated.

  Next, in accordance with the designation by the resource allocation information, the control data extraction unit 224 performs Cat.1 from “RB # 2” and “RB # 4”. 2 and 3 are demodulated and acquired by the OFDM demodulator 222 and the data demodulator 223 (Sa4). At this time, Cat. Since the cyclic redundancy check CRC is not assigned to 2 and 3, the processing is executed without interruption until the demodulation of the downlink shared data channel PDSCH of the resource block PRB. The control data extraction unit 224 includes a Cat. After decoding the MCS information and retransmission information for demodulating the downlink shared data channel PDSCH from 2 and 3, the data demodulation unit 223 and the OFDM demodulation unit 222 receive data from the PDSCH using these MCS information and retransmission information. To instruct. In response to this instruction, the data demodulating unit 223 and the OFDM demodulating unit 222 receive data from the PDSCH (Sa5), and the control data extracting unit 224 determines the consistency of the data received from the PDSCH, and the cyclic redundancy check CRC of the PDSCH. (Sa6).

At this time, the CRC grant on the downlink shared data channel PDSCH includes a method of scrambling data specific to each mobile station apparatus after adding the CRC to the PDSCH, and a downlink shared control channel PSCCH (Cat. 1). Similarly, there is a method of using CRC masked with C-RNTI. In the case of mobile station device specific scrambling, the mobile station device performs a CRC check after performing descrambling processing designated in advance by the base station device.
As described above, Cat. 1 with CRC masked with C-RNTI. 1 is periodically monitored, and only the mobile station device 20 having the same C-RNTI is set to Cat. Therefore, it is sufficient to demodulate the second and third parts and the PDSCH part, and the processing load on the mobile station apparatus 20 can be reduced.

Cat. 1 in Cat. 2 and 3 are arranged, and the remaining Cat. A configuration in which 2 and 3 are extracted from the resource block PRB is also possible. Furthermore, Cat. Header information indicating the presence or absence of 2, 3 You may comprise so that it may arrange | position in 1. FIG.
Furthermore, Cat. 2 and 3, Cat. A part of the information in 1 may be arranged.

[Second Embodiment]
The second embodiment of the present invention will be described below with reference to the drawings. FIG. 11 shows the configuration of the downlink shared control channel PSCCH (resource allocation information, CRC1, CRC2, Cat.2, 3) and the downlink shared data channel PDSCH. In this embodiment, the system bandwidth of the base station apparatus is 5 MHz. Here, since each resource allocation information has 25 resource blocks PRB when the system bandwidth of the base station apparatus is 5 MHz, any mobile station apparatus belonging to the group corresponding to the resource allocation information Is composed of a 25-bit bitmap in which each bit indicates the resource block PRB allocated to.

  CRC1 represents a CRC masked with group ID, and CRC2 represents a CRC masked with short ID. Here, the CRC masked with group ID is a data sequence in which the data sequence (CRC masked with group ID itself) is connected to the target data sequence and the bit sequence obtained by performing the cyclic redundancy check CRC is a group ID. Represents. Group ID is identification information for specifying a group in which a plurality of mobile station devices are grouped. Each resource assignment information designates a resource block PRB assigned to a mobile station apparatus belonging to a specific group ID by a bitmap.

  The CRC masked with short ID represents a data sequence in which the data sequence (CRC masked with short ID itself) is connected to the target data sequence and a cyclic redundancy check CRC is performed to form a short ID. . Here, the short ID is identification information that can uniquely identify the mobile station device within the group defined by the group ID.

  The CRC masked with group ID is Cat. 1 and CRC masked with short ID is Cat. 2 and 3. In addition, the object of CRC masked with group ID in this embodiment is Cat. 1 (resource allocation information), and the subject of the CRC masked with short ID is Cat. 1 (resource allocation information + CRC1) and Cat. 2 and 3 (not including CRC2 itself). That is, in this embodiment, Cat. Reference numeral 1 includes resource allocation information for each group ID and a CRC masked with group ID for each resource allocation information, and is arranged at the head of the subframe as shown in FIG. In FIG. 11, only one set of resource allocation information and CRC1 (CRC masked with group ID) is arranged at the head of the subframe, but there are a plurality of sets of resource allocation information and CRC1. Also good. Cat. 2 and 3 and CRC masked with short short ID are arranged at the head of the resource block PRB allocated to the corresponding mobile station apparatus as shown in FIG.

The above three categories are downlink control information and are transmitted by the downlink shared control channel PSCCH.
Communication data transmitted from the base station apparatus side to the mobile station apparatus is transmitted by the downlink shared data channel PDSCH.

  FIG. 12 is a schematic block diagram illustrating the configuration of the base station device 30 in the present embodiment. In the figure, parts (102 to 108, 110) corresponding to the parts in FIG. The base station apparatus 30 includes a data control unit 121, a data modulation unit 102, an OFDM modulation unit 103, a radio unit 104, a channel estimation unit 105, a DFT-S-OFDM demodulation unit 106, a data demodulation unit 107, , A control data extraction unit 108, a scheduling unit 129, and a radio resource control unit 110. The radio resource control unit 110 of the base station performs group management of the mobile station device using RRC signaling with the radio resource control unit (radio resource control unit 203 of FIG. 13 described later) of each mobile station device. In the group management of the radio resource control unit 110 of the base station, the Group ID and short ID assigned to the mobile station are managed. In the mobile station, these IDs are stored in a storage unit and used for the CRC calculation.

  Communication data and control data for each mobile station apparatus (mobile station apparatus 40 in FIG. 13 described later) and control data are input to the data control unit 121. In response to an instruction from the scheduling unit 129, the data control unit 121 maps the control data to the common control channel CCPCH, the synchronization channel SCH, the paging channel PCH, the downlink pilot channel DPICH, and the downlink shared control channel PSCCH, and transmits the communication data to the downlink. Map to link shared data channel PDSCH. In addition, the data control unit 121 arranges a CRC for PDSCH in the PDSCH of the same resource block PRB.

  Here, the data control unit 121 includes a PSCCH generation control unit 133. The PSCCH generation control unit 133 includes the resource allocation information received from the scheduling unit 129, CRC masked with group ID, Cat. 2 and 3, CRC masked with short IDs are arranged in the downlink shared control channel PSCCH as shown in FIG. 11, and the downlink shared control channel PSCCH is mapped according to the frequency scheduling information from the scheduling unit 129.

The scheduling unit 129 includes a DL scheduling unit 111 that performs downlink scheduling and a UL scheduling unit 112 that performs uplink scheduling.
Based on the scheduling processing result of the DL scheduling unit 111, the scheduling unit 129 generates the resource allocation information regarding the group of each mobile station apparatus and the CRC masked with group ID corresponding to the group ID of the group, the calculation result of the MCS information, Based on the retransmission request from the mobile station apparatus, Cat. 2, 3 and CRC masked with short ID. The scheduling unit 129 includes the resource allocation information, CRC masked with group ID, Cat. 2, 3 and the CRC masked with short ID are notified to the data control unit 121 and transmitted.

  FIG. 13 is a schematic block diagram showing the configuration of the mobile station device 40 in the present embodiment. In the figure, parts (21, 201 to 204, 221 to 223) corresponding to the respective parts in FIG. The mobile station device 40 includes a transmission unit 21, a reception unit 42, a radio unit 201, a scheduling unit 202, a radio resource control unit 203, and a radio control unit 204. The transmission unit 21 includes a data control unit 211, a data modulation unit 212, and a DFT-S-OFDM modulation unit 213, and the reception unit 42 includes a channel estimation unit 221, an OFDM demodulation unit 222, and a data A demodulator 223 and a control data extractor 244 are provided.

  The control data extraction unit (communication block designating unit) 244 separates the received data into communication data (downlink shared data channel PDSCH) and control data (downlink shared control channel PSCCH) and passes them to the upper layer. In addition, the PSCCH reception control unit (assignment information selection unit) 245 of the control data extraction unit 244 performs cyclic redundancy on resource allocation information and CRC masked with group ID (error check information for each identification information) among the separated control data. The inspection CRC is performed, and the resource allocation information whose result is a group ID to which the own apparatus belongs is selected as information of the own apparatus.

  Next, the control data extraction unit 244 executes Cat. From the resource block PRB specified by the previously selected resource allocation information. 2 and 3 (communication parameters) and CRC masked with short short ID (block-by-block error check information). 2 and 3 and the CRC masked with short ID are performed, and a resource block PRB whose result is the short ID of the own device is selected as a resource block PRB addressed to the own device. The control data extraction unit 244 further instructs the data demodulation unit 223 and the OFDM demodulation unit 222 to receive the PDSCH of the selected resource block PRB. At this time, Cat. 2 and 3, downlink MCS information and retransmission information are acquired and passed to data demodulator 223 and OFDM demodulator 222. The PSCCH reception control unit 245 passes uplink MCS information and resource allocation information to the scheduling unit 202.

Processing contents in the base station apparatus will be described.
In the base station apparatus, Cat. With a CRC masked with group ID is assigned as the downlink shared control channel PSCCH. 1 with CRC masked with short ID. 2 and 3 and the downlink shared data channel PDSCH is transmitted. Here, CRC masked with group ID is Cat. 1 is a CRC code associated with a group ID. In this embodiment, Cat. 1 is obtained by taking an exclusive OR of a CRC code (a remainder obtained by dividing Cat.1 by a CRC generator polynomial) obtained as a result of performing a cyclic redundancy check CRC on 1 and a group ID. The CRC masked with short ID is the Cat. CRC codes associated with short IDs for 1, 2, and 3. In this embodiment, Cat. An exclusive OR of the CRC code obtained by performing the cyclic redundancy check CRC on 1, 2, 3 (the remainder obtained by dividing Cat.1, 2, 3 by the CRC generator polynomial) and the short ID is obtained. Is.
The control in the series of base stations is performed by the scheduling unit 129 using the Cat. 1 and Cat. 2 and 3, and the PSCCH generation control unit 133 performs these transmissions.

Specific processing contents in the mobile station apparatus 40 will be described with reference to FIGS. 11 and 14.
Here, it is assumed that C-RNTI and group ID are composed of 16 bits, and short ID is composed of 4 bits. In performing the following processing, these three pieces of identification information are transmitted to mobile station apparatus 40. It is assumed that the notification has already been given from the base station device 30 side and is stored in the storage unit included in the mobile station device 40.

  In the mobile station device 40, the Cat. 1 (Sb1), the PSCCH reception control unit 245 of the mobile station apparatus 40 receives the Cat. Cyclic redundancy check CRC is performed on all 1 (bits including resource allocation information and CRC masked with group ID). As a result, when the ID matches the group ID assigned to the own station (Sb3), the resource block PRB specified by the resource assignment information is detected. For example, if the resource allocation information is composed of a 25-bit bitmap of {0, 1, 0, 1, 0, 0,..., 0}, 2 “RB # 2” and “RB # 4” It can be seen that two resource blocks PRB are designated and these are addressed to the group to which the own station belongs.

  Next, the PSCCH reception control unit 245 performs Cat.1 from “RB # 2” and “RB # 4”, respectively. 2 and 3 are read (Sb4), and a cyclic redundancy check is calculated in each resource block PRB (Sb5). In the present embodiment, this CRC masked with short ID is Cat. 1 and Cat. 2 and 3 includes cyclic redundancy check CRCs for all bits. You may be comprised by CRC with respect to 2 and 3. If the result of the cyclic redundancy check matches the short ID assigned to the own station (Sb6), it is understood that the resource block PRB is addressed to the own station.

  The control data extraction unit 244 is provided with a Cat. After decoding the MCS information and retransmission information for demodulating the downlink shared data channel PDSCH from 2 and 3, the data demodulation unit 223 and the OFDM demodulation unit 222 receive data from the PDSCH using these MCS information and retransmission information. To instruct. In response to this instruction, the data demodulator 223 and the OFDM demodulator 222 receive data from the PDSCH (Sb7). Further, the control data extraction unit 244 checks the consistency of the data received from the PDSCH by the cyclic redundancy check CRC of the PDSCH (Sb8).

In this embodiment, Cat. Although description has been made assuming that CRC masked with short ID is included in 2 and 3, CRC masked with C-RNTI may be included here. In this case, in each resource block PRB, a CRC masked with C-RNTI check is performed, and the output C-RNTI is a comparison target with the already assigned C-RNTI.
Furthermore, in the description of the CRC masked with short ID in this embodiment, Cat. Although arranged as a few CRCs, Cat. It is possible to adopt a configuration in which a few CRC checks are not performed. That is, Cat. The short ID itself may be arranged in 2 and 3.

As described above, Cat. By putting a CRC masked with group ID in 1, resource allocation can be performed in units of groups, and the information amount of resource allocation information can be reduced and efficient resource allocation can be performed.
Further, by first allocating resources in units of groups, only the mobile station apparatuses belonging to the group need only perform the subsequent processes (acquisition of Cat.2, 3 and PDSCH demodulation). The load can be reduced.

[Third Embodiment]
This embodiment will be described in detail with reference to FIGS. 15 and 18. FIG. 15 illustrates a configuration of the downlink shared control channel PSCCH (resource allocation information, CRC1, CRC2, Cat.2, 3) and the downlink shared data channel PDSCH. In this embodiment, the case where the system bandwidth of a base station apparatus is 5 MHz is demonstrated.
Here, when the system bandwidth of the base station apparatus is 5 MHz, the resource allocation information has 25 resource blocks PRB, so that any mobile station apparatus belonging to the group corresponding to the resource allocation information The allocated resource block PRB is composed of a 25-bit bitmap indicating each bit.

  CRC1 represents a CRC masked with group ID, and CRC2 represents a CRC masked with C-RNTI. Here, the meanings of CRC masked with group ID and CRC masked with C-RNTI are the same as those in the second embodiment. In the present embodiment, the CRC masked with group ID is Cat. 1 and CRC masked with C-RNTI is included in the downlink shared data channel PDSCH. In FIG. 15, only one set of resource allocation information and CRC1 (CRC masked with Group ID) is arranged at the head of the subframe. However, there may be a plurality of sets of resource allocation information and CRC1. good. In addition, the object of CRC masked with group ID in this embodiment is Cat. 1 (resource allocation information), and the subject of CRC masked with C-RNTI is PDSCH.

The above three categories are downlink control information and are transmitted by the downlink shared control channel PSCCH.
Further, data transmitted from the base station apparatus side to the mobile station apparatus is transmitted by the downlink shared data channel PDSCH.

  FIG. 16 is a schematic block diagram showing the configuration of the base station device 50 in the present embodiment. In the figure, parts (102 to 108, 110) corresponding to the parts in FIG. The base station device 50 includes a data control unit 141, a data modulation unit 102, an OFDM modulation unit 103, a radio unit 104, a channel estimation unit 105, a DFT-S-OFDM demodulation unit 106, a data demodulation unit 107, A control data extraction unit 108, a scheduling unit 149, and a radio resource control unit 110. The radio resource control unit 110 of the base station performs group management of the mobile station device using RRC signaling with the radio resource control unit (radio resource control unit 203 of FIG. 17 described later) of each mobile station device. In the group management of the radio resource control unit 110 of the base station, the Group ID assigned to the mobile station is managed. In the mobile station, these IDs are stored in a storage unit and used for the CRC calculation.

  Communication data and control data for each mobile station device (mobile station device 60 in FIG. 17 to be described later) and control data are input to the data control unit (communication data transmission unit) 141. In response to an instruction from the scheduling unit 149, the data control unit 141 maps the control data to the common control channel CCPCH, the synchronization channel SCH, the paging channel PCH, the downlink pilot channel DPICH, and the downlink shared control channel PSCCH, and transmits the communication data to the downlink. Map to link shared data channel PDSCH.

  Here, the data control unit 141 includes a PSCCH generation control unit 153. The PSCCH generation control unit 153 includes the resource allocation information received from the scheduling unit 149, the CRC masked with group ID, the Cat. 2 and 3 are arranged in the downlink shared control channel PSCCH as shown in FIG. 15, and the downlink shared control channel PSCCH is mapped according to the frequency scheduling information from the scheduling unit 149. In addition, the data control unit 141 calculates a CRC masked with C-RNTI for the PDSCH, and arranges it in the PDSCH of the same resource block PRB.

The scheduling unit 149 includes a DL scheduling unit 111 that performs downlink scheduling and an UL scheduling unit 112 that performs uplink scheduling.
Based on the scheduling processing result of the DL scheduling unit 111, the scheduling unit 149 generates resource masking information for the group of each mobile station apparatus and a CRC masked with group ID corresponding to the group ID of the group, and the calculation result of the MCS information and Based on the retransmission request from the mobile station apparatus, Cat. 2 and 3 are generated. The scheduling unit 109 includes the resource allocation information, CRC masked with group ID, Cat. 2 and 3 are notified to the data control unit 141 and transmitted.

  FIG. 17 is a schematic block diagram showing the configuration of the mobile station device 60 in the present embodiment. In the figure, parts (21, 201 to 204, 221 to 223) corresponding to the respective parts in FIG. The mobile station device 60 includes a transmission unit 21, a reception unit 62, a radio unit 201, a scheduling unit 202, a radio resource control unit 203, and a radio control unit 204. The transmission unit 21 includes a data control unit 211, a data modulation unit 212, and a DFT-S-OFDM modulation unit 213, and the reception unit 42 includes a channel estimation unit 221, an OFDM demodulation unit 222, and a data A demodulator 223 and a control data extractor 264 are provided.

  The control data extracting unit (communication block designating unit) 264 separates the received data into communication data (downlink shared data channel PDSCH) and control data (downlink shared control channel PSCCH) and passes them to the upper layer. Further, the PSCCH reception control unit (assignment information selection unit) 265 of the control data extraction unit 264 performs cyclic redundancy check on resource assignment information and group ID masked CRC (error check information for each identification information) among the separated control data. CRC is performed, and resource allocation information whose result is a group ID to which the own apparatus belongs is selected as information of the own apparatus.

  Next, the control data extraction unit 264 instructs the data demodulation unit 223 and the OFDM demodulation unit 222 to receive and demodulate the resource block PRB specified by the previously selected resource allocation information. At this time, Cat. 2 and 3, downlink MCS information and retransmission information are acquired and passed to data demodulator 223 and OFDM demodulator 222. The control data extraction unit 264 extracts the Cat. 2, 3 and communication data arranged in PDSCH and CRC masked with C-RNTI (error check information for each block) are obtained, and cyclic redundancy check CRC is performed on these obtained data sequences. The resource block PRB that is the C-RNTI of the device is selected as the resource block PRB addressed to the own device. Also, the PSCCH reception control unit 265 passes uplink MCS information and resource allocation information to the scheduling unit 202.

Processing contents in the base station apparatus will be described.
In the base station apparatus, Cat. With a CRC masked with group ID is assigned as the downlink shared control channel PSCCH. 1 and Cat. 2 and 3, and further transmits a downlink shared data channel PDSCH with CRC masked with C-RNTI. Here, CRC masked with group ID is Cat. 1 is to attach a CRC associated with the group ID. In this embodiment, Cat. 1 is obtained by taking an exclusive OR of a CRC code (a remainder obtained by dividing Cat.1 by a CRC generator polynomial) obtained as a result of performing a cyclic redundancy check CRC on 1 and a group ID. CRC masked with C-RNTI is to attach a CRC associated with the C-RNTI to the PDSCH. In this embodiment, the exclusive OR of the CRC code (the remainder obtained by dividing PDSCH by the CRC generator polynomial) and C-RNTI obtained as a result of performing the cyclic redundancy check on PDSCH is obtained.

Specific processing contents in the mobile station apparatus 60 will be described with reference to FIGS. 15 and 18.
Here, it is assumed that the C-RNTI and the group ID are composed of 16 bits. In performing the following processing, the C-RNTI and the group ID are already notified to the mobile station device 60 from the base station device 50 side. It is assumed that the data is stored in a storage unit included in the mobile station device 60.

  In the mobile station device 60, the Cat. 1 (Sc1), the PSCCH reception control unit 265 of the mobile station apparatus 60 performs Cat. Cyclic redundancy check is performed on all 1 (bits including resource allocation information and CRC masked with group ID) (Sc2). As a result, when it matches the group ID assigned to the own station (Sc3), the resource block PRB specified by the resource assignment information is detected. For example, if the resource allocation information is composed of a 25-bit bitmap of {0, 1, 0, 1, 0, 0,..., 0}, the second and fourth on the bitmap are “1”. Therefore, it can be seen that two resource blocks PRB, the second “RB # 2” and the fourth “RB # 4” are designated, and these are addressed to the group to which the own station belongs. I understand that.

  Next, the control data extraction unit 264 performs “Cat.” From “RB # 2” and “RB # 4”, respectively. 2 and 3 are acquired (Sc4). At this time, Cat. Since CRC is not assigned to 2 and 3, processing is performed without interruption until demodulation of the downlink shared data channel PDSCH of the same resource block PRB (Sc5). At this time, the control data extraction unit 264 performs Cat. After detecting information for demodulating the PDSCH from 2 and 3, communication data and CRC masked with C-RNTI are acquired from the PDSCH using the information. The control data extraction unit 264 checks the consistency of the PDSCH communication data and the CRC masked with C-RNTI using the cyclic redundancy check CRC (Sc6).

  At this time, there are two methods for granting CRC on the PDSCH: a method of scrambling data specific to each mobile station device after granting a CRC to the PDSCH and a method of using CRC masked with C-RNTI. In the case of mobile station device specific scrambling, the mobile station device performs a CRC check after performing descrambling processing designated in advance by the base station device. Here, assuming that the CRC masked with C-RNTI is used, the control data extraction unit 264 determines whether or not the result of the cyclic redundancy check CRC in step Sc6 matches the C-RNTI of the own station ( Sc7) When they match, the resource block PRB is recognized as being addressed to the own station, and the acquired communication data is output as received data (Sc8).

In the present embodiment, the downlink shared data channel PDSCH has been described as including the CRC masked with C-RNTI. However, the short ID itself and the PDSCH CRC may be included.
As described above, Cat. By putting the CRC masked with group ID in 1, resource allocation in units of groups becomes possible, and the number of resource allocation information is reduced, so that the amount of information can be suppressed and efficient resource allocation can be performed. Further, by first allocating resources in units of groups, only the mobile station apparatuses belonging to the group need only perform the subsequent processes (Cat. 2, 3 acquisition and PDSCH demodulation). The load can be reduced.

Further, in the second embodiment and the third embodiment described above, the resource allocation processing procedure in units of groups has been described. However, the resource allocation information based on C-RNTI (for each mobile station apparatus) and the second or The resource allocation information in units of groups described in the third embodiment can coexist. Also, the mobile station apparatus can belong to a plurality of groups.
An example of the operation of the mobile station apparatus in this case is shown in the flowchart shown in FIG. For example, it is assumed that the mobile station apparatus belongs to two groups. The mobile station apparatus includes C-RNTI, Group ID1, short ID1 (in-group ID for Group ID1), Group ID2, short ID2 ( It is assumed that an intra-group ID for Group ID2 is assigned.

First, the mobile station apparatus receives the Cat. CRC is calculated when 1 is received (Sd1). At this time, it is assumed that the mobile station apparatus does not know whether the CRC is a CRC masked with C-RNTI or a CRC masked with group group ID. At this time, the mobile station apparatus checks in the order of C-RNTI and Group ID.
That is, the mobile station apparatus first calculates CRC masked with C-RNTI and checks whether it matches the already assigned C-RNTI (Sd2). If they match, the C-RNTI-based processing of FIG. 10 shown in the first embodiment is performed (Sd3). If they do not match, the process proceeds to step Sd4 (to the calculation of CRC masked with group ID) without performing the C-RNTI-based processing.

Next, the mobile station apparatus calculates a CRC masked with group ID. As a result, it is verified whether or not it matches the Group ID 1 assigned to the own station (Sd4). If they match, the Group ID-based processing shown in the second or third embodiment is performed (Sd5).
Next, the mobile station apparatus determines whether or not all group IDs have been detected (Sd7). Here, since it has Group ID2, it determines that it has not ended, and updates the Group ID ( Sd6), the process returns to step Sd4 to calculate the CRC masked with group ID. Whether this result matches Group ID2 is checked (Sd4), and if it matches, Group ID-based processing shown in the second and third embodiments is further performed (Sd5). The process for detecting all the Group IDs has been completed (the process has been completed for the number of Group IDs assigned to the mobile station apparatus) (Sd7), and the process is terminated.

At this time, in the mobile station apparatus, when C-RNTI-based resource allocation is performed, when group ID-based resource allocation is performed, when C-RNTI and group ID-based resource allocation are used together, 3 There can be two cases. This increases the flexibility of scheduling of the base station device.
In the first to third embodiments described above, the cyclic redundancy check CRC is used as the error check method, but other methods such as a checksum and a hash value may be used.

  The program that operates in the base station apparatus and mobile station apparatus related to the present invention is a program (a program that causes a computer to function) that controls the CPU and the like so as to realize the functions of the above-described embodiments related to the present invention. Information handled by these devices is temporarily stored in the RAM at the time of processing, then stored in various ROMs and HDDs, read out by the CPU as necessary, and corrected and written.

As a recording medium for storing the program, a semiconductor medium (for example, ROM, nonvolatile memory card, etc.), an optical recording medium (for example, DVD, MO, MD, CD, BD, etc.), a magnetic recording medium (for example, magnetic tape, Any of a flexible disk etc. may be sufficient.
In addition, by executing the loaded program, not only the functions of the above-described embodiment are realized, but also based on the instructions of the program, the processing is performed in cooperation with the operating system or other application programs. The functions of the invention may be realized.

  In the case of distribution in the market, a program can be stored and distributed in a portable recording medium, or transferred to a server computer connected via a network such as the Internet. In this case, the storage device of the server computer is also included in the recording medium of the present invention.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes design and the like within a scope not departing from the gist of the present invention.

  The present invention is suitable for use in a wireless communication system such as a mobile phone, but is not limited thereto.

It is a figure which shows the structure of the downlink radio frame used with the radio | wireless communications system by the 1st-3rd embodiment of this invention. It is a figure expressing the resource block PRB in the same embodiment by the arrangement | sequence C (f, t) of an OFDM symbol. It is a figure which shows the structural example of the uplink PRU in the same embodiment. It is the figure which showed the outline | summary of arrangement | positioning of the channel in the downlink in the same embodiment. It is a figure which shows the control information transmitted by the downlink shared control channel PSCCH in the same embodiment. It is a figure which shows an example of the resource allocation information in the same embodiment. It is a figure which shows schematic structure of the downlink shared control channel PSCCH and downlink shared data channel PDSCH by 1st Embodiment of this invention. It is a schematic block diagram which shows the structure of the base station apparatus 10 in the embodiment. FIG. 3 is a schematic block diagram showing a configuration of a mobile station device 20 in the same embodiment. 4 is a flowchart illustrating an operation of the mobile station device 20 in the same embodiment. It is a figure which shows schematic structure of the downlink shared control channel PSCCH and downlink shared data channel PDSCH by 2nd Embodiment of this invention. It is a schematic block diagram which shows the structure of the base station apparatus 30 in the same embodiment. 3 is a schematic block diagram showing a configuration of a mobile station device 40 in the same embodiment. FIG. 7 is a flowchart for explaining the operation of the mobile station device 40 in the embodiment. It is a figure which shows schematic structure of the downlink shared control channel PSCCH and downlink shared data channel PDSCH by 3rd Embodiment of this invention. It is a schematic block diagram which shows the structure of the base station apparatus 50 in the embodiment. 3 is a schematic block diagram showing a configuration of a mobile station device 60 in the same embodiment. FIG. 5 is a flowchart for explaining the operation of the mobile station device 60 in the same embodiment. It is a flowchart explaining the operation | movement of the mobile station apparatus in embodiment which combined 2nd and 3rd. It is a figure which shows schematic structure of the downlink shared control channel PSCCH and downlink shared data channel PDSCH of the conventional downlink. It is a flowchart explaining operation | movement of the conventional mobile station apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 21 ... Transmission part 22, 42, 62 ... Reception part 101, 121, 141 ... Data control part 102 ... Data modulation part 103 ... OFDM modulation part 104 ... Radio | wireless part 105 ... Channel estimation part 106 ... DFT-S-OFDM demodulation part 107 Data demodulator 108 Control data extractor 109, 129, 149 Scheduling unit 110 Radio resource control unit 111 DL scheduling unit 112 UL scheduling unit 113, 133, 153 PSCCH generation control unit 201 Radio unit 202 Scheduling unit 203 ... Radio resource control unit 204 ... Radio control unit 211 ... Data control unit 212 ... Data modulation unit 213 ... DFT-S-OFDM modulation unit 221 ... Channel estimation unit 222 ... OFDM demodulation unit 223 ... Data demodulation unit 224,244 264 ... Control Data extraction unit 225, 245, 265 ... PSCCH reception control unit

Claims (15)

In a mobile station device that communicates with the base station device using a resource block consisting of a predetermined time zone and frequency band assigned by the base station device,
A control information receiving unit for receiving resource block allocation information for each mobile station device identification information for identifying a mobile station device or a mobile station device group, and error information for each identification information corresponding to each of the resource block allocation information;
An error check is performed on the resource block allocation information received by the control information receiving unit and the error check information for each identification information corresponding to the information, and the result of the error check is the mobile station device identification information of the own device or the own information. An allocation information selection unit that reduces processing load by selecting resource block allocation information that matches mobile station apparatus identification information of a mobile station apparatus group to which the apparatus belongs;
A mobile station apparatus comprising: a communication block designating unit that designates a resource block candidate that communicates with the base station apparatus based on the resource block allocation information selected by the allocation information selecting unit. The control information receiving unit further receives a communication parameter corresponding to each resource block,
The mobile station apparatus according to claim 1, wherein the communication block designating unit designates communication using the communication parameter corresponding to the resource block together with designation of the resource block.   The allocation information selection unit performs an error check on the resource block allocation information received by the control information reception unit and the error check information for each identification information corresponding to the information. The mobile station apparatus according to claim 1, wherein resource block allocation information that matches mobile station apparatus identification information of a mobile station apparatus group to which the mobile station apparatus belongs is selected. The control information receiving unit receives, in addition to the resource block allocation information and the identification information error check information, a communication parameter corresponding to each resource block and a block error check information,
The communication block designating unit performs an error check on the communication parameter corresponding to the resource block designated by the resource block assignment information selected by the assignment information selecting unit and the block-by-block error check information among the communication parameters. 4. The mobile station apparatus according to claim 3, wherein a resource block whose identification result identifies the identification block identifying the own apparatus is designated as a resource block that communicates with the base station apparatus. The communication block specifying unit is a resource block including communication data and block-by-block error check information, receives a resource block specified by the selected resource block allocation information, and includes communication data included in the resource block And error checking information for each block, and if the result of this error checking matches the information identifying the own device, the resource block is designated as a resource block communicating with the base station device The mobile station apparatus according to claim 3. In a base station device that communicates by allocating resource blocks consisting of a predetermined time zone and frequency band to a mobile station device,
Resource block allocation information representing a resource block allocated to one mobile station device or a group of mobile station devices is generated, and an error check result for the resource block allocation information and the error check information for each identification information is the resource block A scheduling unit for reducing the processing load of the mobile station device by generating error check information for each identification information serving as mobile station device identification information for identifying the mobile station device or mobile station device group targeted by the allocation information;
A base station apparatus, comprising: a control information transmission unit that transmits resource block allocation information generated by the scheduling unit and error check information for each identification information. The scheduling unit generates communication parameters used for communication with the mobile station device for each resource block,
The base station apparatus according to claim 6, wherein the control information transmission unit transmits the communication parameter arranged in a corresponding resource block.   The scheduling unit generates resource block allocation information representing a resource block allocated to one mobile station apparatus group, and an error check result for the resource block allocation information and the error check information for each identification information is the resource check 7. The base station apparatus according to claim 6, wherein error check information for each identification information that is mobile station apparatus identification information for identifying a mobile station apparatus group targeted by the block allocation information is generated. The scheduling unit generates block-by-block error check information in which an error check result for the communication parameter and the block-by-block error check information is identification information for identifying a mobile station apparatus that communicates using the communication parameter. ,
The base station apparatus according to claim 8, wherein the control information transmission unit arranges and transmits the block-by-block error check information together with the communication parameter in a corresponding resource block. Generate error checking information for each block in which the error checking result for the communication data included in one resource block and the error checking information for each block becomes identification information for identifying the mobile station apparatus to which the communication data is transmitted. The base station apparatus according to claim 8, further comprising: a communication data transmission unit that arranges and transmits the communication data in a corresponding resource block. In a wireless communication system comprising a base station device and a mobile station device that communicates with the base station device using a resource block consisting of a predetermined time zone and frequency band assigned by the base station device,
The base station device
Resource block allocation information representing a resource block allocated to one mobile station device or a group of mobile station devices is generated, and an error check result for the resource block allocation information and the error check information for each identification information is the resource block A scheduling unit that generates error check information for each identification information serving as mobile station apparatus identification information for identifying a mobile station apparatus or a group of mobile station apparatuses targeted by the allocation information;
A control information transmission unit for transmitting resource block allocation information generated by the scheduling unit and error check information for each identification information;
The mobile station device
A control information receiving unit for receiving resource block allocation information for each mobile station device identification information for identifying a mobile station device or a mobile station device group, and error information for each identification information corresponding to each of the resource block allocation information;
An error check is performed on the resource block allocation information received by the control information receiving unit and the error check information for each identification information corresponding to the information, and the result of the error check is the mobile station device identification information of the own device or the own information. An allocation information selection unit that selects resource block allocation information that matches mobile station apparatus identification information of a mobile station apparatus group to which the apparatus belongs;
A wireless communication system comprising: a communication block designating unit for designating resource block candidates to communicate with the base station apparatus based on the resource block allocation information selected by the allocation information selecting unit. In a control information receiving method in a mobile station device that communicates with the base station device using a resource block consisting of a predetermined time zone and frequency band assigned by the base station device,
The mobile station apparatus receives resource block allocation information for each mobile station apparatus identification information for identifying a mobile station apparatus or a mobile station apparatus group, and error information for each identification information corresponding to each of the resource block allocation information. 1 process,
The mobile station apparatus performs an error check on the received resource block allocation information and error check information for each identification information corresponding to the information, and the result of the error check is the mobile station apparatus identification information of the own apparatus or A second step of selecting resource block allocation information that matches mobile station apparatus identification information of a mobile station apparatus group to which the own apparatus belongs;
A control information receiving method comprising: a third step in which the mobile station apparatus designates resource block candidates to communicate with the base station apparatus based on the selected resource block allocation information. In a control information transmission method in a base station device that performs communication by allocating resource blocks consisting of a predetermined time zone and frequency band to a mobile station device,
A first step in which the base station apparatus generates resource block allocation information representing a resource block allocated to one mobile station apparatus or mobile station apparatus group;
A mobile station in which the base station apparatus identifies a mobile station apparatus or a group of mobile station apparatuses targeted by the resource block allocation information based on an error check result for the resource block allocation information and the error check information for each identification information A second step of generating error check information for each identification information serving as device identification information;
A control information transmission method comprising: a third process in which the base station apparatus transmits the resource block allocation information and identification information error check information. A computer provided in a mobile station device that communicates with the base station device using a resource block consisting of a predetermined time zone and frequency band assigned by the base station device,
A control information receiving unit for receiving resource block allocation information for each mobile station device identification information for identifying a mobile station device or a mobile station device group, and error check information for each identification information corresponding to each of the resource block allocation information,
An error check is performed on the resource block allocation information received by the control information receiving unit and the error check information for each identification information corresponding to the information, and the result of the error check is the mobile station device identification information of the own device or the own information. An allocation information selection unit that selects resource block allocation information that matches the mobile station apparatus identification information of the mobile station apparatus group to which the apparatus belongs;
A program that functions as a communication block designating unit that designates resource block candidates that communicate with the base station apparatus based on the resource block allocation information selected by the allocation information selecting unit. A computer provided in a base station apparatus that communicates by allocating resource blocks consisting of a predetermined time zone and frequency band to a mobile station apparatus,
Resource block allocation information representing a resource block allocated to one mobile station device or a group of mobile station devices is generated, and an error check result for the resource block allocation information and the error check information for each identification information is the resource block A scheduling unit that generates error check information for each identification information serving as mobile station apparatus identification information for identifying a mobile station apparatus or a group of mobile station apparatuses targeted by allocation information;
A program that functions as a control information transmission unit that transmits resource block allocation information generated by the scheduling unit and error check information for each identification information.

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