JP2006211593A - Radio receiving device and reception processing program therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce power consumption and to accelerate reception processing by performing processing from the extraction of format identification information to the determination of a transport format with a reduced computational amount. <P>SOLUTION: Soft determination decoding is performed only on TFCIs extracted from a first frame and a second frame for each TTI, and a most likelihood TFCI is determined based on a soft determination output. A rate matching parameter is set to a rate matching processing unit 37 based on the determined TFCI, the number of data of a transport channel is set to a channel decoding unit 38, and thereafter, rate matching, error-correcting decoding and CRC check are performed on all the frames contained in the TTI under that conditions. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a radio receiving apparatus used for a mobile station and its reception in a system adopting, for example, a W-CDMA (Wideband-Code Division Multiple Access) system as a radio access system between a base station and a mobile station. It relates to a processing program.

  A W-CDMA system is known as one of radio access systems used in mobile communication systems. In the W-CDMA system, the physical channel configuration used in the downlink from the base station to the mobile station is defined as follows. FIG. 7 is a diagram showing the frame configuration.

  That is, the physical channel multiplexes 15 slots # 0 to # 14 to form one radio frame. One radio frame length is set to 10 msec, for example. On the other hand, the transport channel (TrCH) transmitted by the physical channel forms a basic unit called TTI (Transmmssion Timing Interval) by multiplexing a plurality of the radio frames. The number of frames to be connected is set to 2, 4, or 8, for example. FIG. 7 illustrates a case where 1 TTI is 40 msec.

  In the slots # 0 to # 14, DPDCH (Dedicated Physical Data CHannel) and control information DPCCH (Dedicated Physical Control CHannel) are set. The DPDCH is used for transmitting transport channel data Data1 and Data2. The DPCCH is used to transmit control information TPC, TFCI, and Pilot. Of these, TPC is transmission power control information, and Pilot is a pilot code.

  A TFCI (Transport-Format-Combination Indicator) indicates a combination of formats of data (DPDCH) transmitted through a transport channel (TrCH), and is transmitted after being encoded by Reed-Muller. Since the physical channel is completed in one radio frame, the TFCI is reproduced by connecting the corresponding information inserted in the slots # 0 to # 14 in the same manner as TPC and Pilot.

  FIG. 8 shows an example of the format of the transport channel (TrCH). In this example, a case where two transport channels multiplexed (CCTrCH: Coded Composite Transport CHannel) is received is shown. DCH0 (DCH: Dedicated CHannel) has a TTI of 40 msec, and DCH1 has a TTI. Is set to 80 msec. DCH0 has three types (TF0, TF1, TF2) of formats (TF; Tranport Format) constituting TTI, and DCH1 also has two types of TF. These formats are called TFS (Transport Format Set).

  The TFCI specifically includes a number indicating a combination of TFs, and is set as shown in FIG. 9 for the TrCH format shown in FIG. For example, TFCI = 4 means that DPDCH is configured by a combination of DCH0 being TF2 and DCH1 being TF0.

  The basic technology of W-CDMA is described in the 3GPP recommendation. In particular, the frame structure of the downlink physical channel is shown in TS25.211 as 5.3.2 Dedicated downlink physical channel as Figure 9: Frame structure for downlink DPCH.

By the way, in the case of receiving data on a transport channel (TrCH), the mobile station radio receiving device needs to determine the TFCI for each TTI and decode the determined TFCI to recognize the format of the transport channel. There is.
Therefore, conventionally, for example, the following wireless communication apparatus has been proposed. That is, for the transport channel transmitted from the base station, first, TFCI is extracted from all frames included in this TTI every interleave period (TTI). Each of the extracted TFCIs is decoded to determine a transport format combination. Next, a plausible one is selected from the determination results, and reception processing for each frame of the TTI is performed based on the combination of the selected transport formats. (For example, see Patent Document 1).
JP 2003-37583 A

  However, in the above-described conventional apparatus, it is necessary to determine the combination of transport formats in the TTI by extracting TFCI from all frames included in the TTI and then decoding and comparing the decoding results. For this reason, much time and power consumption are required for the TFCI decoding process. In addition, for the TFCI decoding process and the like, the received codes of all frames included in the TTI must be stored in a buffer. For this reason, a large-capacity buffer is required, which increases the size and cost of the apparatus. All of these problems are extremely undesirable for a portable wireless receiver in which miniaturization and weight reduction of the device and extension of battery life are the most important issues.

  The present invention has been made paying attention to the above circumstances, and the purpose of the present invention is to enable processing from extraction of format identification information to determination of transmission format with a small amount of calculation, thereby reducing power consumption. An object of the present invention is to provide a wireless reception device that can speed up reception processing.

  In order to achieve the above object, the present invention multiplexes M (an integer greater than or equal to 3) frames constituting a physical channel and uses this as a basic unit of a transport channel, and transmits data through this transport channel. In the wireless receiver used in the system for transmitting the format identification information indicating the transmission format of the data transmitted by the transport channel for each frame, the basic unit is configured for each basic unit of the transport channel. From the M frames to be selected, N (an integer greater than or equal to 2) frames smaller than the M frames are selected, and the format identification information is extracted from each of the selected N frames. Then, based on the likelihood of the extracted N format identification information, appropriate format identification information is selected from the N format identification information, and the corresponding format identification information is applicable. A reception process is performed on M frames constituting the basic unit.

  Therefore, according to the present invention, the format identification information is extracted only for a small number of N frames selected from the M frames constituting the basic unit of the transport channel. Then, the most probable format identification information is selected from the extracted format identification information, and reception processing for all the M frames is performed based on the selected format identification information. For this reason, compared with the case where format identification information is always extracted and decoded from all frames, the amount of calculation is greatly reduced, and it becomes possible to reduce power consumption and speed up reception processing. Moreover, since the likelihood is selected when the format identification information is selected, the format identification information with high reliability can be selected even though the extraction target frames of the format identification information are limited to a small number of frames. .

  That is, according to the present invention, it is possible to perform a process from extraction of format identification information to determination of a transmission format with a small amount of calculation, thereby reducing a power consumption and speeding up a reception process. Can be provided.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a functional block diagram showing an embodiment of a radio receiving apparatus according to the present invention. This wireless reception apparatus includes an antenna 1, a wireless unit 2, a baseband reception processing unit 3, and an application processing unit 4.

  The wireless unit 1 includes a receiver 20 and an analog / digital (A / D) converter. The receiver 20 amplifies and demodulates the W-CDMA radio signal received by the antenna 1 and outputs a baseband received signal. The A / D converter converts the baseband reception signal into a digital signal and inputs the digital signal to the baseband reception processing unit 3.

  The baseband reception processing unit 3 has a RAKE receiving unit 31. The RAKE receiving unit 31 performs despreading processing on a plurality of signals with different transmission paths (paths) included in the baseband received signal using spreading codes. Then, the signals of the respective paths subjected to the despreading process are phase-adjusted and then symbol-combined, thereby outputting physical channel data. The physical channel data is de-interleaved by the second de-interleaver 32 and then input to the segment synthesis unit 33, where a plurality of physical channel data are segment-synthesized and restored to the original signal sequence.

  When a plurality of transport channels are multiplexed, the transport channel (TrCH) demultiplexer 34 divides the data of the signal series for each transport channel. The divided data for each transport channel is de-interleaved by the first de-interleaver 35 and then input to the rate matching processing unit 37 via the transport channel (TrCH) data buffer 36. Then, the data is supplied from the rate matching processing unit 37 to the data processing unit 40 in the application processing unit 4 after passing through the channel decoding unit 38 and the CRC check unit 39.

The baseband reception processing unit 3 includes a TFCI detection unit 41, a TFCI determination unit 42, and a rate matching control unit 43.
The TFCI detection unit 41 extracts the TCFI from the DPCCH for each physical channel (radio frame) output from the RAKE reception unit 31. The TFCI determination unit 42 first decodes the TFCI extracted from the first frame located at the head of the TTI and the subsequent second frame in accordance with the start timing of the TTI supplied from the timing control unit 30. Soft decision decoding is used as the decoding method. Next, based on the decoding result, the TFCI of the first frame and the second frame having the highest likelihood is selected as the TFCI of the TTI.

  The rate matching control unit 43 first reproduces the transport channel data format information TFI by decoding the selected TFCI, and determines the number of data of the transport channel included in each radio frame constituting the TTI. This number of data is set in the channel decoding unit 38.

Further, the rate matching control unit 43 is necessary for the rate matching process according to the recommendation (TS25.212 4.2.7 Rate matching) based on the calculated number of data of the transport channel and the number of data included in the physical channel. The correct parameters.
In general, the rate matching process is performed in order to match the data rate of the transport channel with the format (transmission rate) of the physical channel. Specifically, the puncture process is performed when the number of data in the transport channel is larger than the number of data included in the physical channel, and the repetition (repetition) process is performed when the number is smaller.
Therefore, the rate matching control unit 43 calculates a bit position for performing the puncturing process or the repetition process as the parameter, and gives the calculated parameter to the rate matching processing unit 37.

  The rate matching processing unit 37 performs puncturing (repetition) processing or repetition (repetition) processing on the data of all frames included in the corresponding TTI according to the parameters given from the rate matching control unit 43, thereby The data rate of the transport channel is matched with the transmission rate of the physical channel.

  A plurality of transport channel data obtained by the rate matching process is input to the channel decoding unit 38. The channel decoding unit 38 performs error correction decoding on the transport channel data for each TTI based on the number of data notified from the rate matching control unit 43. The CRC check unit 39 detects errors remaining in the transport channel data subjected to the error correction decoding.

  The protocol / modem control unit 44 controls the communication protocol and the operation of the modem as a whole, and the transport channel data checked by the CRC check unit 39 according to the service type (for example, voice or video). And distributed to the corresponding data processing unit 40 in the application processing unit 4. Each data processing unit 40 of the application processing unit 4 stores or reproduces the input audio and video according to the application program.

The transport channel (TrCH) data buffer 36 determines the TFCI by the TFCI determination unit 42, sets parameters from the rate matching control unit 43 to the rate matching processing unit 37 based on the determination result, and the channel. Until the setting of the number of data in the decoding unit 38 is completed, the transport channel data output from the first deinterleaver 35 is held in units of frames.
The timing control unit 30 establishes synchronization using a CPICH (common pilot channel) or the like, and supplies the timing of each slot, the timing of each radio frame, the head timing of the TTI, and the like to each of the above functional units.

  Of the functional units constituting the baseband receiving unit 3, the timing control unit 30, the RAKE receiving unit 31, the second deinterleaver 32, the segment combining unit 33, the TrCH demultiplexer 34, and the first deinterleaver. 35, TrCH data buffer 36, rate matching processing unit 37, channel decoding unit 38, CRC check unit 39 and TFCI detection unit 41 are realized by hardware, while protocol / modem control unit 44, TFCI determination unit 42 and rate matching control The unit 43 is realized by firmware using a DSP (Digital Signal Processor).

Next, the reception processing operation of the apparatus configured as described above will be described.
The baseband reception processing unit 3 performs the following reception processing control for each radio frame period according to the timing signal generated from the timing control unit 30. 2 and 3 are flowcharts showing the control procedure and control contents.

  That is, the TFCI determination unit 42 first determines whether or not the frame is the first frame of the TTI every time the data of the physical channel (radio frame) is output from the RAKE reception unit 31 in step 2a. The determination is based on the start timing of the TTI supplied from 30. If the output frame is the first frame of the TTI, the TCFI flag is cleared in step 2b, and the stored TFCI decoding result and likelihood information in the previous TTI is cleared.

  Subsequently, the TFCI determination unit 42 determines whether or not the TFCI flag is “ON” in Step 2c. If not, the TFCI determination unit 42 proceeds to Step 2d, and the output frame is a TFCI determination target frame. It is determined whether or not. If it is a TFCI determination target frame, decoding processing is performed on the TFCI extracted from the determination target frame in step 2e, and the decoding result and likelihood information are stored.

  For example, it is assumed that the first frame is output from the RAKE receiving unit 31 in a state where the first frame located at the head in the TTI and the second frame following the first frame are set as TFCI determination target frames. In this case, since the frame output from the RAKE receiving unit 31 is the first frame, the TFCI determination unit 42 performs soft decision decoding on the TFCI extracted from this frame, and stores the soft decision output and likelihood information. . If the output frame is other than the first and second frames, step 2e is passed.

  When the decoding / saving process of the TFCI to be determined is completed, the TFCI determining unit 42 determines whether or not the acquisition of the TFCI soft determination output and the likelihood information has been completed for all the TFCI determination target frames in Step 2f. judge. If it has not been acquired, the process is terminated and input of a subsequent frame is awaited.

  When the subsequent radio frame is output from the RAKE receiving unit 31, the TFCI determining unit 42 executes the TFCI determining process from step 2a to step 2f again. If the radio frame data output from the RAKE receiver 31 is the second frame data, the TFCI extracted from the second frame is soft-decision decoded, and the decoding result and likelihood information are stored.

  Now, by repeating the TFCI determination process from Step 2a to Step 2f described above, it is assumed that the acquisition of the TFCI soft determination output and the likelihood information is completed for all the TFCI determination target frames. Then, the TFCI determination unit 42 proceeds to Step 2g. In step 2g, first, the obtained TFCI likelihood information of the first and second frames is compared with each other, and the TFCI with the higher likelihood is selected.

  For example, as shown in FIG. 4, when the TTI is 40 msec, that is, when the transport channel DCH0 including 4 frames in 1 TTI is received, the TFCI determination unit 42 determines the first frame of the 4 frames included in the TTI as the first frame. Subsequent decoding of the TFCI of the second frame is performed to obtain a soft decision output. If the obtained soft decision outputs are “0.1” and “0.2” as shown in the figure, in this case, since both soft decision outputs are close to “0”, the TFCI of the TTI is “0”. Is determined.

  On the other hand, as a result of the decoding, it is assumed that the soft decision outputs are “0.9” and “0.4” as shown in the figure. In this case, as shown in FIG. 5, since the soft decision output “0.4” is closer to “0”, it is determined to be “0”. However, the determination result at this time has a distance (uncertainty) of 0.4 to the true value “0”. On the other hand, since the soft decision output “0.9” is closer to “1”, it is determined to be “1”, and the uncertainty is 0.1. Accordingly, in this case, the smaller uncertainty, that is, “1” determined based on the soft decision output “0.9” is determined as the TFCI of the TTI.

  When the TFCI determination result is obtained, the rate matching control unit 43 calculates parameters necessary for the rate matching process in step 2h. That is, the transport channel data format information TFI is reproduced by first decoding the TFCI determination result. Then, the number of transport channel data included in each radio frame constituting the TTI is determined. Next, parameters necessary for the rate matching process are calculated based on the determined number of data of the transport channel and the number of data included in the physical channel.

  Specifically, as described above, a bit position where puncture processing or repetition processing is performed is calculated, and the calculated parameter is set in the rate matching processing unit 37. At the same time, the rate matching control unit 43 sets the number of transport channel data included in the determined TTI in the channel decoding unit 38 in step 2i.

  When the setting of the parameter in the rate matching processing unit 37 and the setting of the number of data in the channel decoding unit 38 are completed, the TFCI determination unit 42 finally sets the TFCI flag to “ON” in step 2j, and the TFCI determination process Exit.

Next, operations after rate matching processing will be described.
First, in the rate matching processing unit 37, the following rate matching processing is executed in step 2k. That is, puncturing (repetition) processing or repetition (repetition) processing is performed on the data of all frames included in the corresponding TTI according to the parameters given from the rate matching control unit 43. Thus, the data rate of the transport channel is matched to the transmission rate of the physical channel.

  Therefore, from the rate matching processing unit 37 to the channel decoding unit 38, duplicate bits are deleted in the repetition process, and empty bits are filled in the thinned bit positions in the puncture process. Data of the number of bits of the original transport channel is output. The channel decoding unit 38 assigns a maximum likelihood code to an empty bit assigned to the punctured bit position.

  Next, in step 2m, the channel decoding unit 38 performs error correction decoding on the data of the transport channel for each frame based on the number of data notified from the rate matching control unit 43. The CRC check unit 39 determines whether an error remains in the transport channel data subjected to the error correction decoding.

  The data for which the error correction decoding and CRC check have been completed are distributed by the protocol / modem control unit 44 to the corresponding data processing unit 40 in the application processing unit 4 according to the service type (for example, voice or video). Each data processing unit 40 of the application processing unit 4 stores or reproduces the input audio or video according to the application program. Thus, the data reception process for one frame received and input is completed.

  Note that once the TFCI flag is set to “on” in step 2j, the TFCI determination process and the rate matching control process in steps 2c to 2j are omitted for subsequent frames included in the same TTI received thereafter. Then, rate matching processing, channel decoding processing, and error detection processing of transport channel data in steps 2k to 2n are performed. Therefore, the power consumption by the baseband reception processing unit 3 is reduced by the amount that the TFCI determination process and the rate matching control process are omitted.

  As described above, in this embodiment, soft decision decoding is performed only for the TFCI extracted from the first frame and the second frame for each TTI, and the most probable TFCI is determined based on the soft decision output. To do. Then, based on the determined TFCI, a rate matching parameter is set in the rate matching processing unit 37, and the number of transport channel data is set in the channel decoding unit 38. Rate matching, error correction decoding, and CRC check are performed for all included frames.

  Therefore, compared with the case where TFCI is extracted from all frames included in the TTI and decoded, the amount of calculation is greatly reduced, and it becomes possible to reduce power consumption and speed up the reception process. In addition, since attention is paid to the likelihood when TFCI is determined, the TFCI determination accuracy can be kept high even though the TFCI determination target frame is limited to two frames. Furthermore, since the determination target frame of the TFCI is the first frame located at the head of the TTI and the second frame subsequent thereto, the storage capacity of the transport channel data buffer 36 is reduced, thereby reducing the circuit scale of the apparatus. And cost reduction.

  The present invention is not limited to the above embodiment. For example, in the above embodiment, the case where one transport channel is transmitted has been described as an example. However, the present invention can also be applied to a case where a plurality of transport channels having different TTIs are multiplexed and transmitted.

  FIG. 6 is a diagram for explaining another embodiment as an example. In this embodiment, it is assumed that the transport channel DCH0 in which the TTI is set to 40 msec and the transport channel DCH1 in which the TTI is set to 80 msec are multiplexed and transmitted. The TFCI determination unit 42 selects the shorter one of the two transport channels DCH0 and DCH1, that is, DCH0. Then, for each TTI (= 40 msec) of the selected transport channel DCH0, TFCI is extracted from the first frame located at the head and the subsequent second frame, and soft decision decoding is performed. Subsequently, the most probable TFCI is selected based on the two soft decision outputs, and the transmission formats TF0 to TF2 for each TTI (= 40 msec) are determined by decoding the selected TFCI.

  For example, assume that the soft decision output is “1.4” and “2.8” as shown in the figure. In this case, since the soft decision output “1.4” is closer to “1”, it is determined as “1”. However, the determination result at this time has a distance (uncertainty) of 0.4 to the true value “1”. On the other hand, since the soft decision output “2.8” is close to “3”, it is determined as “3”, and the uncertainty is 0.2. Therefore, in this case, the smaller uncertainty, that is, “3” determined based on the soft decision output “2.8” is determined as the TFCI of the TTI. Also, if the soft decision outputs are “4.9” and “5.4” as shown in the figure, in this case, since both soft decision outputs are close to “5”, the TFCI of the TTI is “5”. judge.

  Therefore, in this embodiment, as in the previous embodiment, soft decision decoding is performed only for the TFCI extracted from the first frame and the second frame for each TTI, and the most reliable is based on the soft decision output. A likely TFCI is determined. For this reason, the amount of calculation required for the TFCI determination process is significantly reduced, and it is possible to reduce power consumption and speed up the reception process. Moreover, in this embodiment, attention is paid to the likelihood when determining the TFCI, so that the TFCI determination accuracy is kept high even though the TFCI determination target frame is limited to two frames. be able to. Furthermore, since the determination target frame of the TFCI is the first frame located at the head of the TTI and the second frame subsequent thereto, the storage capacity of the transport channel data buffer 36 is reduced, thereby reducing the circuit scale of the apparatus. And cost reduction.

  As an algorithm for determining the TFCI based on the soft decision output, an average value of the soft decision output is calculated and calculated in addition to comparing the likelihood of the soft decision output and selecting the maximum likelihood. Various other algorithms can be applied, such as a method for determining TFCI based on a value.

  In the above embodiment, the case where the first frame located at the head of the TTI and the second frame subsequent thereto are selected as the TFCI determination target frame has been described. However, the present invention is not limited to this, and a plurality of frames that are not adjacent to each other may be selected as TFCI determination target frames. For example, an odd-numbered frame or an even-numbered frame may be selected, or the first frame and the last frame may be selected.

  When multiple frames that are not adjacent to each other are selected as TFCI judgment target frames in this way, when used under conditions where burst errors often occur across multiple frames due to the effects of fading, etc. In this case, the influence of the burst error is reduced, and the TFCI determination accuracy can be increased.

  Furthermore, in the above-described embodiment, the case where the number of TFCI determination target frames is fixed has been described. However, the present invention is not limited to this. For example, according to the change in the service type of the transport channel, the TFCI determination target frame The number of selections may be adaptively variably set in units of TTI. Also, the selection position of the TFCI determination target frame may be adaptively variably set according to, for example, transmission path quality.

Further, in the above-described embodiment, each functional unit of the baseband reception processing unit 3 is realized by using both hardware and software. However, all the functions may be realized only by hardware or only by software. .
In addition, the selection position and number of frames to be determined by the TFCI, the number of multiplexed transport channels, the length of the TTI, the type and configuration of the wireless receiver, the TFCI determination processing procedure and contents, etc. Various modifications can be made without departing from the scope of the present invention.

  In short, the present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the components without departing from the scope of the invention in the implementation stage. Moreover, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above embodiments. For example, some components may be deleted from all the components shown in each embodiment. Furthermore, you may combine suitably the component covering different embodiment.

The functional block diagram which shows one Embodiment of the radio | wireless receiving apparatus concerning this invention. The flowchart which shows the first half part of the reception processing procedure by the baseband reception processing unit of the radio | wireless receiver shown in FIG. 1, and the processing content. The flowchart which shows the latter half part of the reception processing procedure by the baseband reception processing unit of the radio | wireless receiver shown in FIG. 1, and a processing content. The figure for demonstrating the TFCI determination processing operation by the baseband reception processing unit of the radio | wireless receiver shown in FIG. The figure for demonstrating an example of the soft decision process used by the TFCI decision process shown in FIG. The figure for demonstrating the TFCI determination processing operation in other embodiment of the radio | wireless receiver concerning this invention. The figure which shows the frame structure of the downlink physical channel used with a W-CDMA system. The figure which shows an example of the format of a transport channel. The figure which shows an example of TFCI.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Antenna 1, 2 ... Wireless unit, 3 ... Baseband reception processing unit, 4 ... Application processing unit, 20 ... Receiver, 30 ... Timing control part, 31 ... RAKE receiving part, 32 ... 2nd de-interleaver, 33 ... Segment combiner 34 ... Transport channel (TrCH) demultiplexer 35 ... First de-interleaver 36 ... Transport channel (TrCH) data buffer 37 ... Rate matching processor 38 ... Channel decoder 39 ... CRC check section, 40 ... Data processing section, 41 ... TFCI detection section, 42 ... TFCI determination section, 43 ... Rate matching control section, 44 ... Protocol / modem control section.

Claims (8)

M (integer greater than or equal to 3) frames constituting a physical channel are multiplexed and used as a basic unit of a transport channel, and data is transmitted by the transport channel and data transmitted by the transport channel is also transmitted. In a wireless receiver used in a system that transmits format identification information representing a transmission format for each frame,
For each basic unit of the transport channel, N (an integer greater than or equal to 2) frames smaller than the M frames are selected from the M frames constituting the basic unit, and the selected N frames Means for extracting said format identification information from each frame;
Means for selecting appropriate format identification information from the N format identification information based on the likelihood of the extracted N format identification information;
A radio receiving apparatus comprising: means for performing a receiving process on M frames constituting the corresponding basic unit based on the selected format identification information. When multiple transport channels with different basic unit lengths are multiplexed and transmitted,
The means for extracting the format identification information includes:
Means for selecting a transport channel having the shortest basic unit length among the plurality of transport channels;
For each basic unit of the selected transport channel, N frames smaller than the number of frames are selected from the M frames constituting the basic unit, and each of the selected N frames is selected. The wireless receiving apparatus according to claim 1, further comprising means for extracting format identification information.   The means for extracting the format identification information selects N consecutive frames from the top of the M frames constituting the basic unit, and extracts the format identification information from the selected N frames, respectively. The radio reception apparatus according to claim 1 or 2, wherein   The means for extracting the format identification information selects N frames that are not adjacent to each other from the M frames constituting the basic unit, and extracts the format identification information from each of the selected N frames. The radio reception apparatus according to claim 1 or 2, characterized in that The means for extracting the format identification information includes:
Means for determining a service type of data transmitted by the transport channel;
3. The radio receiver according to claim 1, further comprising means for variably setting the number N of extracted frames according to the determined service type.   The means for selecting the format identification information compares the likelihoods of the extracted N format identification information, and the format with the highest likelihood is selected from the N format identification information based on the comparison result. 6. The radio receiving apparatus according to claim 1, wherein identification information is selected. The means for selecting the format identification information is:
Means for calculating an average value of likelihood of the extracted N format identification information;
6. The apparatus according to claim 1, further comprising: means for selecting format identification information closest to the average value from the N format identification information based on the calculated average value. The wireless receiving device described. M (integer greater than or equal to 3) frames constituting a physical channel are multiplexed and used as a basic unit of a transport channel, and data is transmitted by the transport channel and data transmitted by the transport channel is also transmitted. A reception processing program used in a wireless reception device including a computer, used in a system that transmits format identification information representing a transmission format for each frame,
Selecting, for each basic unit of the transport channel, N (an integer greater than or equal to 2) frames smaller than the M frames from among the M frames constituting the basic unit;
Extracting the format identification information from each of the selected N frames;
Selecting appropriate format identification information from the N format identification information based on the likelihood of the extracted N format identification information;
A reception processing program that causes the computer to execute a reception process for M frames constituting the corresponding basic unit based on the selected format identification information.

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