Radio communication device and radio communication method

Wireless communication device, wireless communication method {RADIO COMMUNICATION DEVICE AND RADIO COMMUNICATION METHOD}

The present invention, relates to a radio communication apparatus and reception quality reporting method, and particularly by using the adaptive modulation and scheduling of the wireless communication apparatus and reception quality reporting method for performing high-speed packet communication.

Conventionally, three in the HSDPA (High-Speed ​​Downlink Packet Access) of the GPP, the downlink for high-speed packet transmission, a radio (傳播 路) a modulation scheme depending on the situation by adaptively adaptive modulation and spread to control conditions is relatively It is scheduled to transmit a good user signal is used. beyond 3 G mobile communications for OFDM and MC-CDMA (for example, it is considered as a transmission scheme of the system, let (原), Kawabata (川端), stage (段), Sekiguchi (關口) Low (著) "frequency scheduling Using MC-CDM System "theological notation (信 學 技 報) RCS2002-129, 2002 July, see pp.61-pp.66), such as a multicarrier (multi carrier) in the transmission, a plurality of sub-carriers (sub and to realize high-speed transmission using a carrier). In such a transmission scheme, adaptive modulation and scheduling a has been studied to carry out every sub-carrier. The system in which this adaptive modulation and scheduling, a mobile station is a moment in the base station (moment happen to report the channel quality information of each sub-carrier (CQI (Channel Quality Indicator)) of a) is required.

Mobile station reports individual CQI for each sub-carrier for all sub-carriers to the base station. The base station according to a predetermined scheduling algorithm taking into consideration the CQI's from each mobile station, and determines the subcarrier, modulation scheme and coding rate used for each mobile station. Generally, the allocate to each sub-carrier is relatively good propagation conditions for each mobile station, and uses a modulation scheme and encoding rate satisfying a predetermined packet error might be in proportion to the propagation conditions. The base station, when transmitting at the same time to a plurality of mobile stations, and performs frequency scheduling using CQI's every sub-carrier from all users. In other words, the presence of 64 subcarriers, and each mobile station is required two days to report CQI 64. In this case, if the 5 bits to represent the CQI, one is the user per total × 5 = 320 bits required 64-yl, which is transmitted in each radio frame.

<Non-Patent Document 1> Note (原), Kawabata (川端), stage (段), Sekiguchi (口) that "MC-CDM system using frequency scheduling" theology Kibo (信 技 報) RCS2002-129, 2002 July May, pp.61-pp.66

<p num="0005">However, since discarding the in the conventional radio communication apparatus, it becomes a signal for CQI reporting amount massive, the interference on the other data channels and tasel the uplink increases, is capable of transmitting data capacity undesirably significant reduction is a problem have. In addition, because of the signal amount for CQI report bangdaehae load, the power consumption of the mobile station increases the life of the battery has a problem decreased.</p><p num="0006">An object of the present invention, by decreasing the control signal amount to be transmitted, it is possible to reduce the power consumption at the same time can increase the data capacity that can be transmitted, by reducing interference with other radio communication apparatus to increase the system capacity It would be to provide a radio communication apparatus and reception quality reporting method that.</p>

<p num="0007">According to one aspect of the invention, the radio communication apparatus, the reception quality of the plurality of sub-carriers in a from a received signal communication bandwidth and measurement means for measuring for each sub-carrier, the one of the plurality of sub-carriers, the predetermined condition relating to measured reception quality, selection means for selecting a sub-carrier satisfying and, and a reporting means for reporting the result of the selection by said selection means.</p><p num="0008">According to another aspect of the present invention, the base station apparatus selected modulation multi-level number is adaptively based on a communication destination apparatus a plurality of the selected selection result report from the sub-carrier of in the sub-carrier is the communication band that satisfies a predetermined condition relating to reception quality at, (變調 多 値 數, M-ary value) and modulation means for modulating the packet data to the adaptive encoding means for encoding the packet data to the selected coding rate and on the basis of the report, the predetermined on the basis of the reported and identifying the sub-carriers at the same time satisfying the conditions, as the reception quality of the identified sub-carrier modulation is a good size or coding rate and a scheduling means for performing scheduling of packets of data that are assigned.</p><p num="0009">According to a further aspect of the present invention, a method of reporting the reception quality is a reception quality of a plurality of sub-carriers in the received signal from the communication band and the measurement step of measuring for each sub-carrier, of the plurality of sub-carriers, some of the measured reception quality, and a selection step of selecting a sub-carrier satisfying the conditions, see the report of the result of the selection in the selecting step includes the step.</p>

<p num="0010">A wireless communication apparatus and reception quality reporting method according to the present invention, by decreasing the control signal amount to be transmitted at the same time can increase the data capacity that can be transmitted, and possible to reduce the power consumption for the other wireless communication device By reducing the interference has the effect of increasing the capacity of the system, it is useful to report the reception quality of the wireless communication device.</p>

Figure 1 is a block diagram showing the configuration of a radio communication apparatus according to Embodiment 1 of the present invention, 2 is a block diagram showing a configuration of a base station apparatus according to Embodiment 1 of the present invention, 3 is a view showing the arrangement of sub-carriers on the frequency axis according to the first embodiment of the present invention, 4 is a diagram showing a signal format according to the first embodiment of the present invention will, 5 is a diagram showing a signal format according to the first embodiment of the present invention will, 6 is a block diagram showing the configuration of a radio communication apparatus according to Embodiment 2 of the present invention, A block diagram showing the configuration of a wireless communication device according to Fig. 7, the third embodiment of the present invention, 8 shows, a block diagram showing a configuration of a base station apparatus according to Embodiment 3 of the present invention, 9 is a diagram showing a signal format according to the third embodiment of the present invention; Figure 10 is a block diagram showing the configuration of a radio communication apparatus according to Embodiment 4 of the present invention, 11 is a block diagram showing the configuration of a base station apparatus according to Embodiment 4 of the present invention, 12 is a diagram showing a signal format of Embodiment 4 of the present invention, Figure 13 is a, side showing a signal format according to Embodiment 4 of the present invention, 14 is a block diagram showing a configuration of a wireless communication apparatus according to Embodiment 5 of the present invention, 15 is a block diagram showing a configuration of a base station apparatus according to Embodiment 5 of the present invention.

With respect to the embodiment of the present invention below, with reference to the accompanying drawings will be described in detail.

(Embodiment 1)

Figure 1 is a block diagram showing the configuration of the radio communications apparatus 100 according to the first embodiment of the present invention.

Reception radio processing section 102 (hereinafter referred to as "GI"), the antenna 101, down-converts the data received from the base band (baseband) frequency from a radio frequency (down-convert) the guard interval and the like removal and outputs (103).

GI removal section 103 removes the GI from the received signal inputted from reception radio processing section 102, and fast Fourier transform (hereinafter "FFT; Fast Fourier Transform" referred to), and outputs it to the unit 104.

FFT unit 104, the GI removal unit 103 from the input signal received from a serial data format and converts the parallel data format, FFT by control information extraction section 105, user data extraction section 108 and pilot and it outputs the signal extraction unit 112.

In the control information extraction section 105 receives signal input from the FFT unit 104, extracts the control information including the CQI transmitted from the base station number information and outputs it to the demodulator 106.

Demodulation section 106 demodulates the control information inputted from control information extracting section 105, and outputs it to the decoding unit 107.

It said decoding section 107, demodulation section 106 demodulates control information input at the same time as the control information output Sikkim by decoding from the selected sub-carrier the CQI number information included in the control information unit (hereinafter referred to as "SC selecting section" be) to the output (127).

User data extraction section 108 extracts the user data from the received signal inputted from FFT section 104, and outputs it to the demodulator 109.

Demodulation section 109 and outputs the user data extracting unit demodulates the reception data input from the user (108) HARQ (Hybrid Automatic Repeat Request) section 110,.

Reception HARQ section 110, if the user data is new data received from the demodulator 109, and at the same time preserves all or a portion of the user data, and outputs the user data to decoding section 111. If the reception HARQ section 110, demodulating section 109, the user data is retransmitted (再送) data inputted from the storage that was user data retransmitted and at the same time preserved after the synthesized data, decodes the user data synthesizer and outputs (111).

Decoding unit 111 decodes the user data input from the reception HARQ section 110 and outputs the user data. Further, the decoding unit 111, subjected to error detection decoding to output the ACK / NACK generation section 119. Error detection may be used a CRC (Cyclic Redundancy Check). In addition, error detection may be applied to any error detection method is not limited to CRC,.

The pilot signal output to the extraction unit 112 extracts the pilot signal from the received signal inputted from FFT section 104, reception quality measurement unit (113-1 ~ 113-N).

Reception quality measuring unit (113-1 ~ 113-N) are installed by the number of available sub-carriers, using the pilot signal inputted from pilot signal extraction section 112, measures the reception quality of each subcarrier on all the subcarriers and outputs the measurement value information indicating a reception quality of each subcarrier measured on a CQI generation section 114 and SC selecting section 127. To measure information for each subcarrier measured CIR (Carrier to Interference Ratio) or SIR (Signal to Interference Ratio) and any such measure can be used.

Reception quality information generation means, CQI generation section 114, SC selecting section 127 from the input identification information of a subcarrier number (hereinafter referred to as "SC number" that is), the information of sub-carriers in respect, the reception quality measuring unit 113 according to the measurement value and the reception quality information received from the comparison for CQI selection threshold is set to a (second threshold value), a plurality, and to select the sub-carrier generated by CQI. In other words, CQI generating section 114, for each of a plurality of predetermined areas of a measurement value indicating the reception quality been separated by a threshold value for CQI selection, different CQI's have a reference table, and keep the information for the CQI selection is assigned, using the measured value information input from reception quality measurement unit 113 by referring to information for CQI selection selects a CQI. CQI generating section 114 generates, one CQI for one subcarrier, and generates the CQI of sub-carriers of the indicated number. And, CQI generating section 114 outputs the generated CQI to encoding section 115,. Further, not limited to the case of generating the CQI after the selected sub-carriers, after generating CQI for every sub-carrier, may be selected, and generates a CQI based on the CQI information number.

Encoder 115 encodes the CQI of sub-carriers in the number of instructions received from the CQI generation section 114, and outputs it to the modulator 116.

Modulation section 116 modulates the CQI is input from the encoder 115, and outputs it to the central (122).

Coding section 117 encodes the SC number information inputted from SC selecting section 127, and outputs it to the modulator 118.

Modulation section 118 modulates SC number information are inputted from the coding unit 117, and outputs it to the central (122).

ACK / NACK generation section 119, decoding section from the error detection result information received from the (111), re-sending (再送) if necessary to create an error detection signal is a NACK signal, and when the retransmission is not required, the error detection to generate a signal of the ACK signal, and outputs a NACK signal or ACK signal generated by the encoder 120.

Coding section 120, ACK / NACK generation section 119 codes the input from the ACK signal or NACK signal, and outputs to modulating section 121.

Modulation section 121 outputs to the encoding unit modulates a NACK signal or ACK signal inputted from the 120 central 122.

The multiplexer 122 is input from the modulator (116) CQI, a modulation section (118), SC number information inputted from, and the modulation unit 121 to multiplex the input NACK signal or ACK signal from the generated transmission data and it outputs the generated transmission data to S / P (hereinafter referred to as "S / P") converter 123.

S / P conversion unit 123, and converts the transmission data input from the central (122) in a parallel data form from the serial data format, an inverse fast Fourier transform (hereinafter "IFFT; Inverse Fast Fourier Transform" is referred to as portion 124) and outputs it to.

The IFFT unit 124 is output to the GI insertion unit 125 converts the transmission data inputted from IFFT-S / P conversion unit 123, a.

GI insertion section 125 inserts a GI in the transmission data inputted from IFFT section 124 and outputs to transmission wireless processing section 126.

The transmitting radio processing section 126 is transmitted via an antenna 101 to the up-conversion from baseband frequency to radio frequency, such as the transmission data inputted from GI insertion section 125.

Selection means SC selecting section 127, the number of CQI input from decoding section 107 and reception quality measuring unit information (113-1 ~ 113-N) by reading information that is input from the number indicated by the CQI information The reception quality of the number of sub-carriers in order to select preferred. And, SC selecting section 127 outputs the CQI generating section 114 and encoding section 117, the selected sub-carriers as SC number information. Thus, the SC selecting section 127 selects a sub-carrier of the number indicated by the control station apparatus. In addition, SC selecting section 127, the reception quality is good in order not only to the case of selecting a sub-carrier, sets a predetermined threshold value and reception quality of which is indicated in the threshold value or more sub-carriers, by the CQI number information may be selected for any of a number of sub-carriers.

Next, the configuration of the parent station apparatus is a base station of a wireless communication device 100 will be described with reference to two. 2 is a block diagram showing the configuration of base station apparatus 200.

Control information extraction section 205, demodulating section 206, decoding section 207, coding section 209, transmission HARQ section 210, modulating section 211, encoding section 212 and modulating section 213 constitute a transmission data processing unit (221-1 ~ 221-N). Transmission data processing unit (221-1 ~ 221-N) is, as installed as the number of users, each transmission data processing unit (221-1 ~ 221-N), the first performs the processing of the transmission data to be transmitted to the user. Further, encoding section 212 and modulating section 213 constitute control data transmission processing section 220, a.

Reception radio processing section 202 to the down-converted to a baseband frequency, such as the data received via the antenna 201 to the radio frequency, and outputs to GI removal section 203.

GI removal unit 203, removes the GI from the received signal inputted from reception wireless processing section 202 and outputs to FFT section 204.

FFT section 204 and converts the parallel data format the received signal inputted from GI removing section 203 from serial data format, and separates the receiving signal of each user and outputs to respective control information extraction section 205 .

Control information extraction section 205 extracts the control information from the received signal inputted from FFT section 204, and outputs it to the demodulator 206.

Demodulation section 206 demodulates the control information inputted from control information extracting section 205, and outputs it to the decoding unit 207.

Decoding unit 207, decodes the received signal inputted from demodulating section 206 and outputs the CQI of each sub-carrier of a number of instructions contained in the received signal to the control unit 208. Further, the decoding unit 207, decodes the received signal inputted from demodulating section 206 and outputs SC number information included in the received signal to the control unit 208. Further, the decoding unit 207, decodes the received signal inputted from demodulating section 206 and outputs a NACK signal or ACK signal included in the received signal to transmission HARQ section 210.

From the CQI, and SC number information of the scheduling means of the control unit 208, a decoding unit 207 for each user of the wireless communication apparatus 100 inputted from the scheduling algorithm, and at the same time carry out the scheduling on the basis of the modulation multi-level number ( M-ary value) and an MCS (Modulation Coding Schemes) and the coding rate is selected adaptively. That is, the control unit 208, from the CQI, and SC number information of each subcarrier received from each user of the wireless communication device 100, it is possible to determine the reception quality of each sub-carrier of each wireless communication device 100, each and select MCS according to the reception quality of each sub-carrier of the wireless communication device 100. Control unit 208, and it determines the number of available sub-carriers, the transmission data to be transmitted to each wireless communication device 100 within the scope of the available sub-carriers are allocated for each sub-carrier. At this time, the control unit 208, the reception quality for sub-carriers that is the CQI is not transmitted from the radio communication apparatus 100 will be assigned as the worst. Then, the control unit 208, outputs the coding rate information selected for each sub-carrier to encoding section 209, and at the same time output to the modulator 211, the selected modulation information for each subcarrier, using the scheduling a sub-carrier information allocated to each wireless communication device 100 and outputs it to the sub-carrier allocation section 215.

Encoding unit 209, based on the coding rate information received from the controller 208, encodes the input transmission data, and outputs the transmission HARQ section 210.

The HARQ transmission section 210 temporarily holds transmission data outputted to the encoding unit 209 modulates the transmission data inputted from the output unit and, at the same time in 211, modulator 211,. Then, when the transmission HARQ section 210 have been decoding unit 207 from the NACK signal is input, the wireless communication device, because a retransmission is requested by the 100, temporarily hold, and that the transmission data output is ended The re-output to the modulator 211. On the other hand, transmission HARQ section 210, when the ACK signal is received from the demodulator 207, and outputs new transmission data to modulation section 211.

Modulation section 211 based on modulation scheme information inputted from the control unit 208, modulates the transmission data inputted from the HARQ transmission unit 210, and outputs it to the central (214).

Coding section 212 encodes control data to the upper station apparatus is received from the control station apparatus (not shown) and the number of CQI information of the base station apparatus 200, and outputs it to the modulator 213. In addition, the number of CQI information is not limited to the case where the input from the control station apparatus, base station apparatus 200 may be set. In addition, the number of CQI information may be set in consideration of the number of users or traffic (traffic) capacity. And each mobile station may set the value for the reception power of the mobile station.

Modulation section 213 modulates control data and CQI is the number of information sent from the encoder 212, and outputs it to the central (214).

The multiplexer 214 multiplexes each data to be sent to the modulator 211, the control data and CQI number information inputted from modulation section 213 and the transmission data input from each user of the wireless communication device 100, and outputs to the subcarrier allocation unit 215. CQI information is the number of information specific to the wireless communication apparatus 100 of each user.

Sub-carrier assignment section 215, and based on sub-carrier information for each wireless communication apparatus 100 inputted from control unit 208, and change the order of the multiple signals received from the central (214) S / P conversion section (216 ) and outputs it to.

S / P conversion unit 216, the transmission data inputted from the sub-carrier allocation section 215 from serial data format to parallel data format and outputs the converted to the IFFT unit 217.

IFFT section 217 and outputs to GI insertion section 218 to the transmission data inputted from IFFT S / P conversion section 216,. Transmission data is transmitted to each wireless communication apparatus 100 of IFFT in IFFT section 127 is assigned to the scheduling sub-carriers in the frequency control unit 208.

GI insertion unit 218 inserts the GI in the transmission data inputted from IFFT section 217 and outputs to transmission wireless processing section 219.

The transmitting radio processing section 219 to the up-conversion from baseband frequency to radio frequency, such as the transmission data inputted from GI insertion section 218, transmitted via an antenna 201.

Next, the format of a transmission signal for transmission of CQI of the method and the selected sub-carrier to select a sub-carrier of the wireless communication device 100, FIG. 3 to be described with reference to FIG.

Figure 3 shows the 64 subcarriers to be allocated within the range of a predetermined communication bandwidth F1,. The base station apparatus 200, using the sub-carriers to 1 to 64 times, and transmits the high speed packet data to the wireless communication apparatus 100 of all users. If the result of the reception quality measured in reception quality measurement unit (113-1 ~ 113-N), one sub-carrier 11 to 21 and 34 - the reception quality of 41 sub-carriers preferred single, SC selecting section 127, 11 selects a single sub-carrier, and 34 to 21 times to 41 times the subcarrier. And, CQI generating section 114, a CQI only 11 to 21 single sub-carrier, and 34 to 41 single sub-carrier at the same time as generation, generating the SC number information of 11 - 21 single sub-carrier, and 34 to 41 times the subcarrier The. On the other hand, CQI generating section 114, CQI and SC number information for the sub-carriers other than sub-carrier 11 to 21 times and 34 times to 41 times the subcarrier is not produced.

Figure 4 represents the format of the signal to be transmitted to the base station device 200 from the wireless communication device 100. A six-bit SC number information and five bits of CQI are a pair is composed of control information of one sub-carrier. And, the control information outputted from the central 122, as shown in Figure 4, CQI generating section of each subcarrier pair of control information and 1-bit CQI is generated by the (114) ACK / NACK signal is a time division multiplexing The signal.

5 is a diagram showing another example of the format of the signal to be transmitted to the base station device 200 from the wireless communication device 100. SC number information and five bits of CQI of one bit is composed of control information of one sub-carrier. Then, the for each sub-carrier CQI is generated by the central as the control information outputted from 122 is shown in Figure 5,, SC number information of 64 for each sub-carrier of the 64 bits from the head, CQI generating section 114 CQI and the 1-bit ACK / NACK signal is a time division multiplexed signal. SC number information, 64 as sub-carrier # 1 from the sub-carriers in the order of time-division multiplexing, SC number information for sub-carriers that is the CQI is generated, and as "1", SC number information for sub-carrier CQI is not generated, " It is referred to as 0 ". Thus, the first bit, second bit to 10-th bit, 22-th bit to 33-th bit and the 42-th bit to 64 by-th bit is "0", 11-th bit to 21-th bit and the 34-th bit to 41-bit "1" is up to second.

In this CQI and SC base station device receiving the code information 200, the control unit 208 as a, 11 times and 21 times the subcarrier, and 34 to 41 times, such as subcarrier the priority assigned to each wireless communication device 100 for, the scheduling can be performed for each sub-carrier. In addition, with respect to the sub-carriers, the data that needs to reduce the error is conceivable to map (e.g., a high priority control data or retransmission data, and so on).

In this way, you can according to the first embodiment, the reception quality of the number instructed from the base station, select the preferred sub-carriers, and because the transmission to generate a CQI for the selected sub-carriers, by reducing the amount of signal transmitted by the uplink transmission, and that at the same time to increase the data capacity, it is possible to reduce the power consumption and by reducing interference with other radio communication apparatus can improve the system capacity. In addition, according to the first embodiment, because it generates only the CQI of the selected sub-carriers, it is possible to shorten the processing time to generate a CQI. In addition, according to the first embodiment, the instruction of selecting the sub-carriers to generate the CQI is because only by the base station apparatus transmits the index information indicating the number of CQI,, in the downlink, the amount of signal to be transmitted It can be reduced without increasing the signal amount to be transmitted in the uplink.

(Embodiment 2)

Figure 6 is a block diagram showing a configuration of radio communication apparatus 600 according to the second embodiment of the present invention.

Wireless communication device 600 according to the second embodiment, in the radio communications apparatus 100 according to the first embodiment shown in Fig. 1, as shown in Figure 6, except for the SC selecting section 127, a threshold Add the determination unit 601. It is noted that in FIG. 6, FIG. 1 and the same constituent parts are designated by the same reference numerals and a description thereof will be omitted. In addition, since the configuration of the base station apparatus, Figure 2 the same configuration except that of transmitting the CQI threshold value information instead of transmitting the CQI information number, and a description thereof will be omitted.

Decoding unit 107 outputs the threshold value determining section (601) CQI threshold value information contained in the control information to the output and, at the same time, the control information, decodes the input demodulated control information from the demodulator 106, .

CQI generating section 114, the measurement value information inputted from the reception quality measurement unit 113, and generates a CQI for each sub-carrier for all sub-carriers. In other words, CQI generating section 114, for each of a plurality of predetermined areas of a measurement value indicating the reception quality been separated by the threshold value for CQI selection, different CQI's have a reference table, and keep the information for the CQI selection is assigned, receiving using the measured value information input from the quality measurement unit 113 by referring to information for CQI selection selects a CQI. And, CQI generating section 114 outputs the generated CQI to the threshold value determining section 601,. In addition, CQI generating section 114 is not limited to the case of generating CQI's for all sub-carriers, the CQI may be generated after sub-carriers selected by determining the reception quality of each subcarrier threshold.

The selection means the threshold value determining section 601 has a first threshold, the CQI threshold value information inputted from the CQI generating section (114), CQI and the decryption unit 107, inputted from the reception quality less than the threshold CQI only choice, and at the same time and outputs the selected CQI to encoding section 115, and outputs SC number information for the selected CQI to the coding unit 117. Specifically, when using an 8-stage CQI to level 1-8, and, if the threshold level of 5 or above, selecting only the level 5 or more CQI, and only the level 4 or higher CQI in the case when the threshold level of 4 or more Select. A threshold value determining section 601, a method for outputting the information of the step 8 to select the CQI is indicating that the level of the 8 levels of level 1 to 8, or, for example, in the case of the threshold level of 5 or higher, and the case where the generated CQI is level 7, and a method of outputting relative value information and outputting the relative value of 2 for a threshold may be employed. When 8 have adopted a method of outputting information in the step, while the need 1-8 Step 3 bits to represent the, in case of adopting the method of outputting relative value information, if the difference between the threshold 0-3 Since the amount of information of 2 bits, the relative value information in the case of transmission it is possible to reduce the amount of signal transmission. In the case to employ a method of outputting relative value information, and the base station apparatus stores the common threshold information and the wireless communication device 600. As for the format of a transmission signal of a method for selecting CQI's for wireless communication apparatus 600 and transmits the selected CQI to, Figure 3 to Figure 5, so that the same description will be omitted.

In this way, according to the second embodiment, selecting the sub-carriers satisfying the above reception quality threshold value indicated from base station apparatus, so that the transmission to generate a CQI for the selected sub-carriers, by reducing the amount of signal to be transmitted in the uplink, transmission at the same time to increase the data capacity that can be in, it is possible to reduce the power consumption and by reducing interference with other radio communication apparatus can improve the system capacity.

In addition, according to the second embodiment, the direction of a to select the sub-carriers to generate the CQI, since from the base station simply by transmitting a command information indicative of a threshold value, in the downlink, increasing the amount of signal to be transmitted It can be reduced without making the signal amount to be transmitted in the uplink.

(Embodiment 3)

Figure 7 is a block diagram showing a configuration of radio communication apparatus 700 according to the third embodiment of the present invention.

Wireless communication device according to the third embodiment 700 is in the radio communications apparatus 100 according to the first embodiment shown in Fig. 1, as shown in Figure 7, the encoder 117, modulator 118, and the SC selecting section 127 subtracts a threshold value determining section 701, used sub-carrier and adding the selection section 702 and spreading section 703. Further, in FIG. 7, FIG. 1 and the same constituent parts are designated by the same reference numerals and a description thereof will be omitted.

CQI generating section 114, the measurement value information inputted from the reception quality measurement unit 113, and generates a CQI for each sub-carrier for all sub-carriers. In other words, CQI generating section 114, for each of a plurality of predetermined areas of a measurement value indicating the reception quality been separated by the threshold value for CQI selection, different CQI's have a reference table, and keep the information for the CQI selection is assigned, receiving with the measured value information sent from the quality measurement unit 113 by referring to information for CQI selection selects a CQI. And, CQI generating section 114 outputs the generated CQI to the threshold value determining section 701,. In addition, CQI generating section 114 is not limited to the case of generating CQI's for all sub-carriers, the CQI may be generated after sub-carriers selected by determining the reception quality of each subcarrier threshold.

The selection means the threshold value determining section 701 with the CQI threshold value information inputted from the CQI and the decryption unit 107, input from the CQI generation section 114, reception quality is selected, only least CQI threshold, the selected CQI at the same time and the outputs to the coding section 115, and outputs it to the SC number information for the selected CQI sub-carrier selecting unit 702. A threshold value determining section 701, similarly to the threshold determination unit 601 in the second embodiment, how to select the CQI is to output information in Step 8 indicating that the level of the 8-step level 1-8 , or by adopting either of the method of outputting relative value information, it is possible to determine the threshold.

Using subcarrier selection section 702 selects the threshold value determining unit 701 sub-carrier or the resulting CQI is from SC number information inputted from the sub-carriers corresponding to the advance one-to-one to the sub-carriers as transmission sub-carriers, the CQI and it outputs it to spreading section 703.

The spreading unit 703 allocates the subcarriers allocated from the sub-carrier selecting section 702 spread processing using the spreading code for each CQI CQI input from the selection using the CQI signal sub-carrier 702, central ( 122) and outputs it to. A spreading code for the CQI, while the other spreading codes for each user in each wireless communication device 700, and utilizes the same spreading code for all sub-carriers and CQI for each user of the wireless communication device 700.

In addition, because no transmission is SC number information, the spreading unit 703 it does not process the spread for the SC number information.

The multiplexer 122, and outputs the spread modulation part and the input CQI from 703 multiplexing unit the NACK signal or ACK signal inputted from 121 to S / P conversion unit 123, a. The transmitted signal is multiplexed in the central 122, doedeunji CQI of each subcarrier is assigned to its sub-carrier, or the CQI of each sub-carrier is the state of any one sub-carrier allocated to doedeunji associating in a one-to-one. In addition, as will be described later in detail how the sub-carrier assignment.

Next, the configuration of a base station apparatus according to the third embodiment, will be described with reference to FIG. 8 is a block diagram showing the configuration of base station apparatus 800.

The base station apparatus 800 according to the third embodiment the base station 200 according to the first embodiment shown in Fig. 2, as shown in Figure 8, despreader 801 and sub-carrier determining section 802. It adds. Further, in Fig. 8, Fig. 2 has the same configuration as the portion designated by the same reference numerals, and a description thereof will be omitted.

Control information extraction section 205, demodulating section 206, decoding section 207, coding section 209, transmission HARQ section 210, modulating section 211, encoding section 212, modulating section 213, , de-spreading section 801 and sub-carrier determining section 802, constitutes a transmission data processing unit (803-1 ~ 803-N). Transmission data processing unit (803-1 ~ 803-N) is, as installed as the number of users, each transmission data processing unit (803-1 ~ 803-N), the first performs the processing of the transmission data to be transmitted to the user.

Despreader 801, the base station apparatus 800 is configured to store a plurality of spreading code used in the wireless communication device 700 performs a communication of the first user. Then, despreading section 801 for all of the subcarriers inputted from control information extracting unit 205, a storage despreading with a spreading code and outputs the sub-carrier determining section 802. Further, each wireless communication device 700 because it uses a different spreading code, the despreading unit 801 of each of transmission data processing unit (803-1 ~ 803-N) stores a different spreading code, .

Sub-carrier determining section 802, the station determines spreader 801 despreads the output less than the threshold value, the subcarrier inputted from the said selected sub-carriers in a wireless communication device 700 and, SC number information of the reception quality is less than the threshold subcarriers and outputs to the control unit 208 and a demodulator 206. Also, sub-carrier determining section 802, as is from the radio communication apparatus 700, SC number information is not sent, and is stored in advance the wireless communication device 700 and SC number information are common. Further, in consideration of reception quality due to fading fluctuation degree (fading), the reception quality is a relative value to the reception quality of the pilot signal.

Decoding unit 207, decodes the received signal inputted from demodulating section 206 and outputs the CQI of each sub-carrier of a number of instructions contained in the received signal to the control unit 208. Further, decoding section 207 outputs a decode the received signal inputted from demodulating section 206 and NACK signals or ACK signal included in the received signal to transmission HARQ section 210,.

Control unit 208 has a SC number information of the CQI and sub-carrier determining section 802. Each user's wireless communication device 700 is input from each user's wireless communication device 700, it received from the decoding unit 207, a scheduling at the same time doing the scheduling on the basis of the algorithm, to select the MCS and the modulation and coding rate adaptively dimensions. That is, the control unit 208, using the SC number information for each user of the wireless communication device CQI and sub-carrier plate of each on a subcarrier is transmitted from a (700) section (802) of each of the user input from the wireless communication device 700 and, it is possible to determine the reception quality of each sub-carrier of each wireless communication apparatus 700, and selects an MCS for the reception quality of each sub-carrier of each wireless communication device 700. The control unit 208 is a preferred sub-carriers, the reception quality at each wireless communication apparatus 700, and may allocate data to be transmitted to the wireless communication device 700. Control unit 208, and it determines the number of available sub-carriers, the transmission data to be transmitted to each wireless communication apparatus 700 within the range of usable sub-carriers is assigned to each sub-carrier. At this time, the control unit 208, the reception quality for sub-carriers that is the CQI is not transmitted from the wireless communication device 700, as assigned to the worst. Then, the control unit 208, outputs the coding rate information selected for each sub-carrier to encoding section 209, modulation scheme information selected for each sub-carrier and at the same time output to the modulator 211, each wireless scheduling and outputs the sub-carrier information allocated to the communication apparatus 700 to sub-carrier allocation section 215.

Next, the format of the transmission signal of the CQI to be transmitted by selecting the CQI and the selected method of allocating the sub-carriers of the wireless communication device 700 will be described with reference to FIG. 3 and FIG. As the allocation of sub-carriers, there may be employed a method, or the two ways of the method of allocating the CQI of each sub-carrier to another sub-carriers that correspond one to one to allocate the CQI of each sub-carrier in their subcarriers.

First, the CQI of each subcarrier will be described a method for assigning to their sub-carrier. 3, the result of the reception quality measured in reception quality measurement unit (113-1 ~ 113-N), when 11 to 21 sub-carriers and one 34 - the reception quality of the single sub-carrier 41 is good, the threshold value determining section ( 701) is 11 to 21 times the subcarrier, and 34 ~ 41 times subcarrier selecting the CQI at the same time, used sub-carrier selecting unit 702, 11 to 21 single CQI is also allocated to the 11 to 21 single subcarriers At the same time, the CQI of 34 to 41 sub-carriers are assigned to one single sub-carrier 34 to 41. On the other hand, threshold value determining section 701, CQI and SC number information for sub-carriers other than sub-carrier 11 to 21 times and 34 times to 41 times the subcarrier is not selected.

Next, a description will be given of a method for allocating CQI of each sub-carrier to another sub-carrier for associating in a one-to-one. 3, the reception quality measurement result of the reception quality measurement unit (113-1 ~ 113-N), if the reception quality is good, a single sub-carrier 11 to 21 and sub-carriers 34 to 41 times, the threshold value determining section 701, 11 to 21 single sub-carrier, and 34 to 41 single CQI to and at the same time the selection of sub-carriers, used sub-carrier selecting unit 702, which correspond to 11 to 21 single CQI in a one-to-one 22 and at the same time assigned to a single sub-carrier to 32 times, and allocates the CQI of sub-carriers 34 to 41 times to 51 times to 57 times that corresponding sub-carriers in a one-to-one. On the other hand, threshold value determining section 701, CQI and SC number information for sub-carriers other than sub-carrier 11 to 21 times and 34 times to 41 times the subcarrier is not selected. In addition, the sub-carrier with a one-to-one corresponding to that sub-carrier is generated by the CQI, the wireless communication apparatus 700 and by the base station apparatus 800, placing beforehand in mind between a base station apparatus 800 a CQI of a received CQI which subcarriers It may recognize that.

Figure 9 shows the format of the signal to be transmitted to the base station device 800 from the wireless communication device 700. As shown in Figure 9, the control information composed of each CQI and ACK signal or NACK signal of 5 bits for the selected sub-carriers as a threshold determined in the threshold determining section 701 is time division multiplexed and transmitted.

In this way, according to the third embodiment, select the sub-carriers satisfying reception quality than a threshold value indicated from base station apparatus, so that the transmission to generate a CQI for the selected sub-carriers, by reducing the amount of signal to be transmitted in the uplink, transmission at the same time can increase the data capacity that can be, and the power consumption can be reduced, by reducing the interference to other radio communication device can increase the system capacity. In addition, according to the third embodiment, since the reception quality is assigned to the selected CQI to the preferred sub-carriers, the base station apparatus 800, the quality can be used to obtain a good CQI. In addition, according to the third embodiment, the CQI generated for each sub-carrier, so that produced the CQI is assigned to its sub-carriers, even if not send the SC number information, the base station apparatus 800 determines the CQI if either sub to be due to that, it is possible to reduce the transmission amount of the amount of signal is not transmitted by the SC number information. Also, since the duplex (複信) method is substantially equal to the propagation path characteristics from the uplink downlink if TDD, is also able to use up a good quality of the downlink sub-carrier receiving circuit. That is, it is possible to transmit the CQI by using a signal with high transmission.

In addition, according to the third embodiment, the direction of a to select the sub-carriers to generate the CQI, since the base station apparatus to be just to transmit the index information indicating the threshold value, in the downlink, increasing the amount of signal to be transmitted It can be reduced without making the signal amount to be transmitted in the uplink. In addition, according to the third embodiment, since the process spread the subcarriers and the CQI with a unique spreading code to the wireless communication apparatus 700 of each user, it transmits the CQI to the same sub-carrier from the multi-user wireless device 700 In the whole case, the base station apparatus 800 can distinguish whether the user which of the transmitted from the wireless communication device 700.

(Embodiment 4)

10 is a block diagram showing a configuration of wireless communication apparatus 1000 according to Embodiment 4 of the present invention.

Wireless communication apparatus 1000 according to the embodiment 4, in the radio communications apparatus 100 according to the first embodiment shown in Fig. 1, as shown in Figure 10, CQI generating section 114, coding section (115 ) and minus the modulation unit 116. Further, in FIG. 10, FIG. 1 and the same constituent parts are designated by the same reference numerals and a description thereof will be omitted.

SC selecting section 127 is instructed from the reception quality measurement value information inputted from decoding section CQI information input from the number 107 and a reception quality measurement unit (113-1 ~ 113-N), by the number of CQI information, It selects a sub-carrier of good reception quality as the number of order. And, SC selecting section 127 is outputs to coding section 117, the selected sub-carriers as SC number information.

The multiplexing 122, modulation section 118 generates a multi-year transmission data a NACK signal or ACK signal inputted from the input SC number information and the modulation unit 121 from and generated transmission data to S / P conversion and outputs it to the unit 123.

Next, the configuration of base station apparatus 1100 according to the fourth embodiment, will be described with reference to Figure 11. 11 is a block diagram showing the configuration of base station apparatus 1100,. Further, in Fig. 11, Fig. 2 of the same configuration portions are denoted by the same reference numerals and a description thereof will be omitted.

And outputs it to the decoding section 207, demodulation section 206, control the SC number information included in the received signal by decoding the received signal from 208. Further, the decoding unit 207 outputs a NACK signal or ACK signal included in the received signal and decodes the received signal inputted from demodulating section 206 to transmission HARQ section 210,.

Control unit 208, from the SC number information for wireless communication apparatus 1000 of each user inputted from decoding section 207, since the receiving quality in the wireless communication apparatus 1000 of each user can see the good subcarriers and a scheduling based on a scheduling algorithm such that the reception quality is the transmission data is assigned to the preferred sub-carriers SC number. That is, the control unit 208, since the reception quality is good then SC number is arranged to be the scheduling to allocate a transmission data sequence from the head of the SC number. Then, the control unit 208 outputs the sub-carrier information for use in transmission to sub-carrier allocation section 215.

Encoder 209 encodes the transmission data at a fixed encoding rate set in advance and outputs to transmission HARQ section 210.

Modulator 211, and modulates the transmission data transmission HARQ section 210 inputted from the fixed modulation method set in advance and outputs it to the central (214).

Next, a format of a transmission signal of a method for selecting CQI's for wireless communication apparatus 1000, and when transmitting selected CQI, will be described below with reference to FIG. 3 and to Fig.

3, the results of the reception quality measurement unit (113-1 ~ 113-N) from the reception quality measurement, when the single sub-carrier 11 to 21 and 34 - the reception quality of 41 sub-carriers preferred single, SC selecting section (127 ), the outputs SC number information unique sub-carriers 11 to 21 times and 34 times to 41 times the subcarrier. On the other hand, SC selecting section 127, SC number information for sub-carriers other than sub-carrier 11 to 21 times and 34 times to 41 times the subcarrier is not output.

Figure 12 shows the format of the signal to be transmitted to the base station apparatus 1100 from the radio communication device 1000,. The control information is output from the central 122, as shown in FIG. 12, and SC number information and one bit of ACK / NACK signal is a time division multiplexed signal consisting of 6 bits of the selected sub-carriers from SC selecting section 127 .

13 is showing another example of the signal format to be transmitted to the base station apparatus 1100 from the radio communication device 1000,. The control information is output from the central 122 is as shown in Fig. 13, SC 64, each sub-carrier number of the 64-bit information of 1 bit from the head of the ACK / NACK signal is a time division multiplexed signal. SC number information as being time-division multiplexed in sequence from the first subcarrier of 64 subcarriers,, SC number information for the selected sub-carriers, and as "1", SC number information for sub-carriers that are not selected is referred to as "0". Thus, the first bit, second bit to 10-th bit, 22-th bit to 33-th bit and the 42-th bit to 64 by-th bit is "0", 11-th bit to 21-th bit and the 34-th bit to 41-bit "1" is up to second.

In this way, according to this embodiment 4, the reception quality of the designated number from the base station, select the preferred sub-carriers, so that the transmission of SC number information for the selected sub-carrier, the uplink in comparison with the case of transmitting both the CQI and the SC number information. By reducing the amount of signal to be transmitted to the line, that can increase the data capacity that can be transmitted can be reduced at the same time the power consumption and, by reducing interference with other radio communication apparatus can improve the system capacity. In addition, according to the fourth embodiment, the instruction of selecting the sub-carriers to generate the CQI is because only by the base station apparatus transmits the index information indicating the number of CQI,, in the downlink, the amount of signal to be transmitted It can be reduced without increasing the signal amount to be transmitted in the uplink. In addition, according to the fourth embodiment, the base station apparatus, pre-fixed to be using the coding rate is set for encoding and modulation scheme, etc. Since performed for, due to that can be a simple processing such as encoding processing and modulation processing circuit and at the same time and that can reduce the size of the device, the manufacturing cost can be reduced.

(Embodiment 5)

14 is a block diagram showing a configuration of a wireless communication apparatus 1400 according to Embodiment 5 of the present invention.

Wireless communication device according to the embodiment 5, 1400 in the radio communications apparatus 100 according to the first embodiment shown in Fig. 1, as shown in Figure 14, encoder 115, modulator 116, the coding unit 117, except for the modulator 118, and SC selecting section 127, the threshold determination unit 1401, a spreading code generator for CQI (1402), used sub-carrier selecting section 1403 and spreading section 1404 adds. Further, in FIG. 14, FIG. 1 and the same constituent parts are designated by the same reference numerals and a description thereof will be omitted.

Selecting means of a threshold value determining section 1401, using the inputted CQI threshold value information from the CQI generating section 114, the reception quality information of CQI and decoding unit 107 for selecting the input from the reception quality threshold selecting only the CQI or more and, at the same time, and outputs the selected CQI spreading code generating section 1402 is for CQI, and outputs it to the SC number information for the selected CQI sub-carrier selecting section 1403. A threshold value determining section 1401, similarly to the threshold determination unit 601 in the second embodiment, how to select the CQI is for outputting 8 operation information indicating that the level of the 8 levels of level 1 to 8, or by employing either the method of outputting relative value information may be a threshold value is determined. In addition, any of not only a case of selecting the threshold value or more CQI from the CQI of sub-carriers, prior to generating the CQI reception quality is less than the threshold value, select the sub-carriers, and CQI may be generated only in the selected sub-carriers.

Generating spreading codes of the spreading code selecting means for CQI unit 1402, and has a reference table that preserves the CQI information for the selected screen a relationship that a spreading code of spreading codes for CQI spreading code information. So that the spreading code generating section 1402 is for CQI, with the CQI input from the threshold determination unit 1401 with reference to a spreading code information for CQI selecting a spreading code, to the selected spreading code information spread unit 1404 output. Spreading codes in the spreading code information for CQI, while the other code in a wireless communication apparatus 1400 of each user, and a different code for each CQI.

The allocating means using sub-carrier selecting section 1403 allocates an error detection signal is an ACK signal or NACK signal inputted from modulation section 121, the sub-carriers selected from the SC number information inputted from the threshold value determining section 1401, and it outputs it to spreading section 1404. Here, the used sub-carrier selecting section 1403, when a plurality of SC number information are inputted from threshold value determining section 1401, allocates an ACK signal or NACK signal to a plurality of sub-carriers as SC number information notification.

Spreading section 1404, used for the sub-carrier selection unit (1403), ACK signal or NACK signal is allocated sub-carriers input from the spreading code generating section 1402 is the spread process using the spread code input from a CQI and outputs it to the central (122).

Next, a configuration of a base station apparatus according to the fifth embodiment, will be described with reference to FIG. 15. 15 is a block diagram showing the configuration of base station apparatus 1500,.

The base station apparatus 1500 according to the embodiment 5, the base station apparatus 200 according to the first embodiment shown in Fig. 2, as shown in Figure 15, the despreader 1501, and determine the state 1502 add. Further, in Fig. 15, Fig. 2 of the same configuration portions are denoted by the same reference characters and a description thereof will be omitted.

Control information extraction section 205, demodulating section 206, decoding section 207, coding section 209, transmission HARQ section 210, modulating section 211, encoding section 212, modulating section 213, , despreading section 1501 and determination section 1502, constitutes the transmission data processing unit (1503-1 ~ 1503-N). Transmission data processing unit (1503-1 ~ 1503-N) as being installed by a number of users, each of transmission data processing unit (1503-1 ~ 1503-N) is the processing of the transmission data to be transmitted to one user.

Despreading section 1501, the base station apparatus 1500 and stores the plurality of spreading code used in the wireless communication apparatus 1400 of one user performs a communication. Then, despreading section 1501 for all of the subcarriers inputted from control information extracting unit 205, a storage despreading with a spreading code and outputs to determining section in 1502. Further, each wireless communication apparatus 1400 because it uses a different spreading code, despreading section 1501 of each of transmission data processing unit (1503-1 ~ 1503-N) is stored, and the different spreading codes, .

Judgment unit 1502, at the same time and that has a reference table to keep the spreading code and CQI for the spreading code information which screen related to CQI, 1 user of the wireless communication device 1400 is stored all of the spreading codes in use, and have. Further, each wireless communication device 1400, because it uses a different spreading code, the determination 1502 of each of transmission data processing unit (1503-1 ~ 1503-N), respectively, and storing the different spreading codes. The spreading code is common for CQI information and spreading code generation section 1402, a CQI,. Judgment unit 1502, obtaining despread outputs of the received signal inputted from despreading section 1501 every sub-carrier, and compares the largest de-spreading output with a threshold value (a third threshold value) every sub-carrier. Then, the determination unit 1502 has a spreading code with the largest de-spreading outputs are greater than the subcarrier to the threshold value it is determined that the selected sub-carriers in a wireless communication apparatus 1400, and the back diffusion of the largest de-spreading outputs, CQI Referring to the spreading code information for the largest de-spreading outputs are greater than the threshold value, select the CQI of sub-carriers, and outputs the selected CQI to the control unit 208. At this time, the de-spread output in consideration of the reception power fluctuation due to fading shown by the relative value of the pilot reception power.

Demodulation unit 206 demodulates the ACK signal or the NACK signal received as input from determination section 1502, and outputs it to the decoding unit 207.

Decoding unit 207, decodes the demodulation result of the ACK signal or NACK signal inputted from demodulating section 206 and outputs to transmission HARQ section 210.

Control unit 208, the plate from the CQI of each user of the wireless communication device (1400) received from the state 1502, and at the same time doing the scheduling based on the scheduling algorithm, the modulation adapting the MCS, such as multi-level number and the coding rate enemy It is selected. That is, the control unit 208, the plate from the CQI of each subcarrier inputted from the state 1502, it is possible to determine the reception quality of each sub-carrier for each wireless communication apparatus 1400, for each wireless communication apparatus 1400 to select the MCS for the reception quality of each subcarrier. Control unit 208, and it determines the number of available sub-carriers, the transmission data to be transmitted to each wireless communication apparatus 1400 within the range of usable sub-carriers and allocation for each subcarrier. At this time, the control unit 208, the reception quality for sub-carrier CQI is not input from the determining unit 1502, as assigned to the worst. Then, the control unit 208, outputs the coding rate information selected for each sub-carrier to encoding section 209, modulation scheme information selected for each sub-carrier and at the same time output to the modulator 211, each wireless scheduling and outputs the information of the sub-carriers allocated to the communication unit 1400 to the sub-carrier allocation section 215.

Next, the method of selecting the sub-carriers in the radio communication apparatus 1400 will be described using FIG.

Uses sub-carrier selecting section 1403 allocates an ACK signal or NACK signal on the 11th and 21 th subcarrier, and the 34th ~ 41st subcarriers. And, the control information is multiplexed in the central (122) is a plurality of ACK signals or NACK signals are time-division multiplexed signal. By the way, in the case of Figure 3, there is to transmit multiple ACK signal or a NACK signal, because it requires five bits, while the CQI is an ACK signal or NACK signal is 1 bit, the whole signal amount can be reduced.

In this way, according to the fifth embodiment, the reception quality is selected, the preferred sub-carriers, and because the transmission by allocating an ACK signal or a NACK signal to the selected sub-carriers, by reducing the amount of signal to be transmitted in the uplink, that is capable of transmitting data size and that at the same time can increase, it is possible to reduce the power consumption and by reducing interference with other radio communication apparatus can improve the system capacity.

In addition, according to the fifth embodiment, whether or not a request for re-transmission of an ACK signal or a NACK signal present and to combine the reception quality information corresponding to the CQI at the same time, since the CQI and SC number information is not transmitted, the uplink It can be reduced to the limit for the amount of signal transmission.

In addition, according to the fifth embodiment, the instruction of selecting the sub-carriers to generate the CQI is because only by the base station apparatus transmits the index information indicating the number of CQI,, in the downlink, the amount of signal to be transmitted It can be reduced without increasing the signal amount to be transmitted in the uplink.

In the embodiment 5, the wireless communication apparatus 1400, but to select a user-specific spreading code to spread the subcarriers allocated to the ACK signal or NACK signal, it in not limited to, a user-specific scrambling (scramble) code is selected, and may be scrambled with the selected scrambling code to the one assigned to the ACK signal or NACK signal subcarrier.

In the above Embodiment 1 to Embodiment 5, but by allocating the 64 subcarriers within communication band F1, so one does not, it is possible to allocate an arbitrary number of sub-carriers other than 64. The radio communication apparatus of the above Embodiment 1 to Embodiment 5 is applicable to a communication terminal device. It is noted that in the embodiment 3 to the embodiment 5, but determined by the sub-carrier to select a threshold determination of the reception quality of each sub-carrier, may be selected as the number of subcarriers which is notified from the host station as the first embodiment.

In addition, each functional block used in the description of each embodiment is typically realized as an integrated circuit LSI. These may be a single chip individually, or may be single chip to include a part or all.

Here, though in LSI, depending on differences in integration, IC, system LSI, super LSI, ultra LSI may also be referred to as.

The technique of integrated circuit is not limited to LSI, not, may be implemented as a dedicated circuit or a general-purpose processor. After LSI manufacture, capable FPGA (Field Programmable Gate Array) or a program, may be used to reconfigure the connection and setting of the LSI internal circuit cell as reconfigurable processor (Reconfigurable Processor).

In addition, when advanced by a separate technology for the semiconductor technology or a derivative of an integrated circuit technique that replaces an LSI appearance, of course, the integration of functional blocks may be achieved by using the technology. Such as the adaptation of biotechnology may be a possibility.

According to the present invention as described above, by reducing the amount of signal to be transmitted at the same time it can increase the data capacity that can be transmitted, and possible to reduce the power consumption, by reducing interference with other wireless communication device it is possible to increase the system capacity.

Herein it is based on a patent application 2003-288162 filed August 06, 2003,. Put all this information, incorporated by reference herein.

105: control information extraction section 108: user data extraction unit 112: pilot signal extraction unit 113-n: reception quality measuring unit 127: SC selecting section 114: CQI generating unit