JPH11284607A - Radio communication method, radio transmission method, and radio reception method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve transmission efficiency by reducing unnecessary retransmission in an ARQ(automatic retransmission request) transmission system. SOLUTION: This radio communication method transmits transmission data in specific data units from a transmission side to a reception side, certifies error estimation data sent from the reception side, and resends the transmission data only when an error can not be corrected on the reception side. If it can not be judged that the error estimation on the reception side is correct after certifying the error estimation data, data indicating that the error estimation is correct and the error can be corrected is sent back to the reception side. Further, when the transmission data are sent in a given data units from the transmission side to the reception side, CRC check bits and sequence numbers are added to the transmission data.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an automatic retransmission request (A
RQ: Automatic Repeat Request
The present invention relates to a wireless communication method and a wireless communication device that perform error control in data transmission by performing st).

[0002]

2. Description of the Related Art Conventionally, in this type of apparatus, St.
op And Wait ARQ (SW ARQ), Go Back N ARQ (GBN ARQ), and Selective Repeat ARQ (S
R ARQ) system is often used. These are because they can simplify the structure of the decoder and have higher reliability than the error correction method. An error control method in these conventional wireless communication devices will be described with reference to the drawings.

First, the SW ARQ method will be described with reference to FIG. FIG. 7 is a diagram illustrating a data transmission state in the SW ARQ scheme. In the SW ARQ scheme, the transmitting side has one codeword (packet or cell).
And the receiving side checks whether an error has occurred in the transmission path. If there is no error, the receiving side sends an acknowledgment signal (ACK) to the transmitting side using the return line to notify the transmitting side that the data information has been correctly received.

On the other hand, if an error is detected on the receiving side, this information is discarded and a retransmission request signal (NAK) is sent to the transmitting side.
Upon receiving the NAK, the transmitting side retransmits the previous data information stored in the transmission buffer. The transmitting side receives AC from the receiving side.
Continue to retransmit the same codeword until the K signal is received.

For example, in FIG. 7, when the transmitting side transmits the first codeword and the receiving side correctly receives the first codeword, an acknowledgment signal (AC
K) to the transmitting side. Upon receiving this ACK, the transmitting side transmits the next second codeword. However, since the receiving side has detected an error in the second codeword, it transmits a retransmission request signal (NAK) to the transmitting side. The transmitting side transmits a retransmission request signal (NA
When K) is received, the second codeword is transmitted again.
That is, unless the transmitting side receives an acknowledgment signal (ACK) from the receiving side, the transmitting side continues to transmit the same codeword as the previously transmitted codeword without transmitting the next new codeword.

[0006] As described above, the SW ARQ scheme is relatively widely used in many data transmissions since its processing is relatively simple. However, since the time spent waiting until the response signal is received is useless, the transmission efficiency is not good.

Next, the GBN ARQ scheme will be described with reference to FIG.
This will be described with reference to FIG. FIG. 8 is a diagram illustrating a data transmission state in the GBN ARQ scheme. As shown in FIG. 8, in the GBN ARQ scheme, the transmitting side continuously transmits a code word, and transmits the next data information without waiting for a response signal of the code word. Therefore, the response signal is received after the round-trip communication delay time. During this period, the transmitting side transmits N-1 (4 in FIG. 8) codewords. When the transmitting side receives the NAK, it retreats to the codeword (the second codeword in FIG. 8) for the signal stored in the transmission buffer, and retransmits N (5 in FIG. 8) codewords therefrom. I do. On the receiving side, all N-1 received codewords following the erroneously received codeword are discarded.

For example, in FIG. 8, the transmitting side transmits codewords continuously from the first. When the receiving side transmits an ACK signal indicating that the first codeword has been correctly received,
When transmitting the fifth codeword, the transmitting side transmits
Receive the signal. Since the transmitting side has received the ACK signal, the transmitting side transmits the sixth codeword, which is the next new codeword.

When the receiving side transmits a NAK signal indicating that the second codeword was erroneously received, the transmitting side receives the NAK signal when transmitting the sixth codeword. Since the transmitting side has received the NAK signal corresponding to the second codeword, after transmitting the sixth codeword, it starts transmitting again from the second codeword in order. On the receiving side, the second and subsequent codewords are discarded.

As described above, the GBN ARQ system uses the SW
Although the transmission efficiency is higher than that of the ARQ scheme, many error-free codes following the codeword determined to be in error will be retransmitted. Therefore, if the round-trip communication delay time increases or the data transmission speed increases, the transmission efficiency increases. Gets worse.

Next, the SR ARQ scheme will be described with reference to FIG. FIG. 9 is a diagram illustrating a data transmission state in the SR ARQ scheme. In the SR ARQ scheme, codewords are continuously transmitted as in the GBN ARQ scheme. However, in this method, only the codeword that the receiving side has determined to be an error is retransmitted.

For example, in FIG. 9, the transmitting side continuously transmits codewords from the first one, and the receiving side checks for errors in the received codewords. Since the first codeword was correctly received, an ACK signal is transmitted. In order to receive the ACK signal when transmitting the fifth codeword, the transmitting side transmits the next new codeword, that is, the sixth codeword.

However, since the second codeword has an error, the receiving side transmits a NAK signal to the transmitting side. Since the code word is continuously transmitted from the transmitting side, the N
The transmitting side receives the AK signal when transmitting the sixth codeword. When transmitting the sixth codeword, the transmitting side receives the NAK signal from the receiving side, so that the sixth codeword is followed by the same codeword as the previously transmitted second codeword. Send again. After retransmitting the second codeword, the next new seventh and eighth codewords are transmitted.

On the other hand, the receiving side transmits an NAK signal because the fifth codeword has an error. On the sending side,
Since the NAK signal was received from the receiving side when transmitting the eighth codeword, the same codeword as the previously transmitted fifth codeword is transmitted again after the eighth codeword. After retransmitting the fifth codeword, transmit the next new ninth codeword.

As described above, in the SR ARQ scheme, the transmitting side continuously transmits codewords and retransmits only the codewords that have received NAKs. Therefore, the SR ARQ scheme has the highest transmission efficiency among the above three basic ARQ schemes. It is.

[0016]

However, in the above conventional communication system, retransmission must be performed many times on a communication path having a high error rate due to interference, distortion, attenuation, and the like.
There is a problem that retransmission efficiency becomes very poor. In particular, in a fading environment such as high-speed wireless communication,
There is a problem that the reliability of communication is reduced.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and a radio communication method and a radio communication apparatus capable of reducing unnecessary retransmission in an ARQ transmission system and improving transmission efficiency. The purpose is to provide.

[0018]

SUMMARY OF THE INVENTION The present inventor has focused on the fact that in a data transmission apparatus, it is necessary to avoid unnecessary retransmission in order to improve transmission efficiency, When an error is detected in the data, the position of the erroneous bit is estimated using an error estimation table, and information such as the estimated error bit position and the estimated value, and a codeword sequence number are added to the retransmission request signal (NAK). The transmitting side verifies the estimation of the error by the receiving side, and retransmits the transmission data only when the estimation is incorrect, thereby avoiding unnecessary retransmissions in the ARQ transmission scheme, and improving the transmission efficiency. Have been found to be able to be improved, and the present invention has been accomplished.

That is, the present invention is a wireless communication method for transmitting transmission data in a predetermined data unit from a transmission side to a reception side, wherein the transmission side sequentially transmits the transmission data to the reception side, Retransmitting only the necessary transmission data based on the error estimation data sent from the reception side for each transmission data, while the reception side receives the transmission data transmitted from the transmission side, An error estimation of each transmission data is performed, and the error estimation data is transmitted to the transmission side.

Thus, unnecessary retransmission in the ARQ transmission system can be avoided. That is, the present inventor has made it possible to solve the above-described problem and perform highly reliable wireless communication even in a fading environment.

[0021]

An embodiment of the wireless communication method according to the present invention is a wireless communication method for transmitting transmission data in a predetermined data unit from a transmission side to a reception side, wherein the transmission side includes the transmission side. While sequentially transmitting data to the receiving side, retransmitting only necessary transmission data based on error estimation data sent from the receiving side for each transmission data, the receiving side is transmitted from the transmitting side The received transmission data is received, and error estimation of each transmission data is performed, and the error estimation data is transmitted to the transmission side.

According to this configuration, unnecessary retransmission can be avoided, so that transmission efficiency can be improved and highly reliable communication can be realized even at a high moving speed.

According to a second aspect of the present invention, there is provided a wireless transmission method for transmitting transmission data in a predetermined data unit from a transmission side to a reception side, and verifying error estimation data transmitted from the reception side. The transmission data is retransmitted only when the error estimation on the receiving side cannot be determined to be correct. Further, the invention of the wireless transmission device according to claim 12 is
A transmitting unit that transmits transmission data in a predetermined data unit from the transmitting device to the receiving device, an estimation verifying unit that verifies the error estimation data transmitted from the receiving device, and a result of the verification, A retransmission unit that retransmits transmission data only when the error estimation cannot be determined to be correct is adopted.

With these configurations, the error estimation data transmitted from the receiving side is verified, and the transmission data is retransmitted only when the error estimation on the receiving side cannot be determined to be correct. Retransmission can be avoided, and transmission efficiency can be improved.

According to a third aspect of the present invention, in the wireless transmission method according to the second aspect, if the error estimation data on the receiving side can be determined to be correct as a result of verifying the error estimation data, Adopt a configuration that does not perform retransmission. According to a thirteenth aspect of the present invention, in the wireless transmission apparatus according to the twelfth aspect, if the error estimation data is verified to be correct as a result of verifying the error estimation data, retransmission of the transmission data is performed. The configuration that does not perform is adopted.

With these configurations, if the receiving side can determine that the error estimation is correct even if there is an error in the received transmission data, the transmitting side does not perform retransmission, so that data that does not need to be retransmitted is transmitted. Transmission efficiency can be improved, so that transmission efficiency can be improved.

According to a fourth aspect of the present invention, in the wireless transmission method according to the second aspect, if the error estimation data on the receiving side can be determined to be correct as a result of verifying the error estimation data, Is returned to the receiving side to the effect that it can be determined that the data is correct. According to a fourteenth aspect of the present invention, in the invention of the twelfth aspect, as a result of verifying the error estimation data,
When it can be determined that the error estimation in the receiving device is correct, a configuration is employed in which data indicating that the error estimation is determined to be correct is returned to the receiving device.

According to these configurations, it becomes clear that the receiving side can correct even if there is an error in the received transmission data, so that the processing for correcting the error can be reliably performed, and appropriate reception data is output. It becomes possible.

According to a fifth aspect of the present invention, in the wireless transmission method according to any one of the second to fourth aspects, transmission data is transmitted in a predetermined data unit from the transmission side to the reception side. In this case, a configuration is adopted in which a CRC check bit and a sequence number are added to transmission data.

According to these configurations, the process of detecting which packet has an error becomes easy only by recognizing the CRC check bit and the sequence number attached to the transmission data.

According to a sixth aspect of the present invention, there is provided a radio receiving method comprising: receiving transmission data transmitted in a predetermined data unit from a transmission side; performing error estimation on each of the received transmission data; A configuration for transmitting to the transmitting side is adopted.

With this configuration, the receiving side transmits the error estimation data to the transmitting side, and if the estimation is correct, there is no need to transmit a retransmission request signal to the transmitting side, and the transmitting side avoids unnecessary retransmissions. Therefore, transmission efficiency can be improved.

According to a seventh aspect of the present invention, in the wireless receiving method according to the sixth aspect, an error check is performed on the received transmission data, and as a result of the error check, an error can be estimated. In this case, error estimation is performed and the error estimation data is transmitted to the transmitting side. On the other hand, when error estimation is not possible, a retransmission request signal is transmitted to the transmitting side. Further, the invention of a wireless receiving apparatus according to claim 15 is a receiving section for receiving transmission data transmitted from the transmitting apparatus in a predetermined data unit, an error checking section for performing an error check on the transmission data, As a result of this test,
When error estimation is possible, a configuration is provided that includes error estimation means for performing error estimation, and transmission means for transmitting the error estimation data or the retransmission request signal to the transmission device.

With these configurations, the receiving side estimates an error, and if the estimation is correct, there is no need to transmit an unnecessary retransmission request signal, so that transmission efficiency can be improved. If the error cannot be estimated, a retransmission request signal can be transmitted.

According to an eighth aspect of the present invention, in the radio receiving method according to the sixth or seventh aspect, when a predetermined time has elapsed after receiving the transmission data or when the estimation from the transmitting side is correct. If you receive the data to the effect
It is assumed that the transmission data received from the transmission side is not retransmitted, and the transmission data is output as valid data.

With these configurations, it is clear that the estimation of the error is correct at an early stage, so that the processing efficiency can be improved.

According to a ninth aspect of the present invention, in the wireless reception method according to any one of the sixth to eighth aspects, an error estimation is performed on the received transmission data, and the error estimation data is obtained. If there is no retransmission of transmission data from the transmission side after a predetermined time has elapsed after transmission to the transmission side, a configuration for correcting the error is adopted. Claim 1
According to a sixth aspect of the present invention, in the invention of the wireless receiving apparatus according to the fifteenth aspect, after transmitting the error estimation data to the transmitting apparatus, if there is no retransmission of the transmission data from the transmitting apparatus even after a predetermined time elapses, A configuration for correcting the error is adopted.

With these configurations, it is possible to judge that the error estimation is correct when a predetermined time has elapsed, so that the error is corrected based on the estimation and an unnecessary retransmission request signal is transmitted to the transmitting side. This eliminates the need and improves transmission efficiency.

The invention according to claim 10 is the same as the invention according to claim 6.
In the invention of the wireless reception method according to any one of claims 8 to 10, after performing error estimation on the received transmission data and transmitting the error estimation data to the transmission side, the error estimation is correct from the transmission side. When receiving the data indicating that the error has been determined, a configuration is adopted in which the error is corrected as in the error estimation. Further, according to the invention of claim 17, in the invention of the wireless receiving apparatus according to claim 15, after transmitting the error estimation data to the transmission apparatus, the data indicating that the error estimation can be determined to be correct from the transmission apparatus. Is received,
A configuration for correcting an error according to the error estimation is employed.

According to these configurations, the error can be corrected when data indicating that the error estimation has been determined to be correct is received from the transmission side, so that the correction process can be performed reliably.

The eleventh aspect of the present invention is the sixth aspect of the present invention.
In the wireless receiving method according to any one of claims 10 to 10, error estimation is performed on the received transmission data, and if there is an error, the error information is detected using a memory table recorded in advance. A configuration is employed in which it is determined whether the error is an error for which an error pattern can be estimated. The invention according to claim 18 is the invention according to claims 15 to 1
8. The wireless receiving apparatus according to claim 8, wherein the error checking means includes a memory table in which error information is recorded in advance, and when there is an error in the transmission data received from the transmitting apparatus, Is used to determine whether the detected error is an error for which an error pattern can be estimated.

According to these configurations, the position where the error occurs can be detected, so that the error can be easily estimated.

According to a nineteenth aspect of the present invention, there is provided a mobile station apparatus according to any one of the twelfth to fourteenth aspects, and a wireless reception apparatus according to the fifteenth to eighteenth aspects. A configuration including an apparatus is adopted.

With this configuration, unnecessary transmission of a retransmission request signal to the base station apparatus is eliminated, so that transmission efficiency can be improved.

According to a twentieth aspect of the present invention, there is provided a base station apparatus according to any one of the twelfth to fourteenth aspects, and the wireless reception apparatus according to the fifteenth to eighteenth aspects. A configuration including an apparatus is adopted.

According to this configuration, unnecessary retransmission of transmission data to the mobile station device can be avoided, so that transmission efficiency can be improved.

Further, the invention of a communication system according to claim 21 comprises a mobile station device according to claim 19 and a base station device according to claim 20.

With this configuration, the transmission efficiency can be improved and the throughput can be improved, so that the number of users who can communicate simultaneously can be increased.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an outline of an overall configuration of a transmitting side and a receiving side in a wireless communication apparatus according to an embodiment of the present invention. On the transmitting side, the input information data is added with a CRC check bit by the CRC adding section 101, and is sent out on the uplink channel 103 by the transmitting section 102. This transmission signal is received by the reception unit 104 on the transmission side, and after being subjected to a CRC check by the CRC check unit 105, an error is determined by the error estimation unit 106.
A confirmation signal ACK is sent back to the transmitting side using.

On the other hand, if there is an error, the error estimating unit 10
Error estimation is performed in step 6, and if estimation is possible, the position of the error bit, transmission content, and sequence number are added to the NAK signal as an estimation result and transmitted to the transmission side.
If estimation is impossible, a NAK signal is returned.

On the transmitting side, the estimation verifying unit 108 checks the error estimation information sent from the receiving side. If the estimation is correct, a message indicating that retransmission is not to be performed or the estimation is accurate is performed using the control channel. Send. If they do not match the estimation results, retransmission processing is performed by retransmission processing section 109, and retransmission is performed in the same manner as when a normal NAK signal is received.

Next, a detailed configuration of the transmitting side in the wireless communication apparatus according to one embodiment of the present invention will be described with reference to FIG. FIG. 2 is a block diagram showing the overall configuration on the transmitting side of the wireless communication device according to one embodiment of the present invention. The input information data is packetized by the data input unit 201, added with a CRC check bit by the CRC adding unit 202, and written into the transmission buffer 203.
The transmitter 204 converts an output signal of the transmission buffer 203 into a code suitable for a communication channel, and transmits the code to an uplink channel.

On the other hand, ACK or NA sent from the receiving side
The K signal is received by the receiver 205 and received by the reception buffer 20.
6 and transmitted to the estimation verification unit 207. This estimation verification unit 207 confirms the error estimation information. If the estimation is correct, no retransmission is performed, or only a message indicating that the estimation is accurate is transmitted using a control channel (not shown). If the result does not match the estimation result, retransmission processing is performed in retransmission processing section 208, and only the codeword of the erroneous sequence number is retransmitted via ARQ buffer 209, as in the case of normal NAK.

As described above, the radio communication apparatus according to the embodiment of the present invention performs estimation verification on the transmission side, and does not perform retransmission if the estimation on the reception side is correct, thereby avoiding unnecessary retransmission. And transmission efficiency can be improved.

Next, details of the receiving side of the radio communication apparatus according to one embodiment of the present invention will be described with reference to FIG. FIG. 3 is a block diagram showing an overall configuration on the receiving side of the wireless communication device according to one embodiment of the present invention. The codeword with CRC transmitted from the uplink channel is received by the receiver 301 and subjected to a CRC check by the CRC check means 302, and then an error check is made by the error check means 303. If there is no error here, the data is transferred to the data output unit 304, and an acknowledgment signal ACK is returned to the transmission side using the downlink channel.

On the other hand, if there is an error, the error estimator 306 estimates the error using the error estimation table 305. If a match exists in the error estimation table 305, the position of the error bit, the transmission content, and the sequence number are added to the NAK signal as an estimation result and sent to the transmission side via the forwarding means 308 and the transmitter 309. If no match exists, it is determined that estimation is impossible, and is returned to the transmitting side as a general NAK signal.

After receiving the message that the estimation is accurate or waiting for a certain time (one round-trip delay), the receiving side considers that there is no retransmission data, and replaces the codeword corresponding to the corresponding sequence number (SN) with the codeword. Transmit it forward as accurate data.

As described above, the radio communication apparatus according to one embodiment of the present invention performs error estimation on the receiving side,
If the estimation is correct, the received word is corrected, so that it is not necessary for the transmitting side to retransmit the codeword, and the transmission efficiency can be improved.

Next, the operation of the wireless communication apparatus according to one embodiment of the present invention will be described with reference to FIG. FIG.
FIG. 3 is a diagram showing a data transmission state of the wireless communication device according to one embodiment of the present invention.

On the transmitting side, codewords are transmitted in order according to the sequence number (SN). Since the first codeword 401 has been transmitted correctly, the ACK signal 402 is returned from the receiving side to the transmitting side. Next, the second, fifth, seventh, tenth,
Since an error occurred in the twelfth and thirteenth codewords,
Error estimation is performed on the receiving side, and a NAK message 403 with the estimation result is returned to the transmitting side. Error estimation verification is performed on the transmission side, and retransmission of the second, seventh, tenth, and twelfth codewords is not performed because the error estimation is correct. However, for the fifth and thirteenth codewords, the error estimation is incorrect, and the transmitting side immediately retransmits these codewords.

As described above, only when the error estimation is incorrect, the transmitting side retransmits the codeword, so that unnecessary retransmission can be avoided and transmission efficiency can be improved.

Next, the error estimation table 305 in the radio communication apparatus according to one embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG. FIG. 5 shows the error residue pattern and 1
5 is a chart showing a correspondence relationship between bit error patterns, which is created in advance by a generator polynomial G (X), a codeword length n, and the like. This error estimation table 305
Performs a check using the error remainder pattern as an address,
The occurrence position of the 1-bit error is output as the determination result. Since the error occurrence probability of 2 bits or more is generally very small, only a 1-bit error which is easy to process is estimated here. The effect is shown in FIG.

FIG. 6 is a diagram showing characteristics of the retransmission probability of the radio communication apparatus according to the embodiment of the present invention. In FIG. 6, the code length n = 80, the information bit length k = 64, the CRC bits m = 16, and the average error rate p of the transmission path p = 0.01 / 0.
001 is an evaluation example. The reduction in the retransmission probability when compared with the SR ARQ scheme is 65.6 when P = 0.01.
%, 96.1% when P = 0.001. As is apparent from FIG. 6, the radio communication apparatus according to the embodiment of the present invention has an excellent effect in reducing the probability of ARQ retransmission.

When the error probability of 2 bits or more cannot be ignored in a very bad situation, the present invention and the error correction technique can be used in combination. For example, it is possible to realize an application example in which the error estimation ARQ means of the present invention is implemented after performing 1-bit or 2-bit error correction.

As described above, according to the radio communication apparatus according to the embodiment of the present invention, an error is estimated on the receiving side, and if the error is correctly estimated, the transmitting side does not retransmit the codeword. Since the receiving side corrects the error, unnecessary retransmission of the codeword can be avoided, and the transmission efficiency can be improved.

[0066]

As is apparent from the above description, according to the present invention, unnecessary retransmission can be avoided.
The transmission efficiency can be improved, and highly reliable communication can be realized even at a high moving speed. Further, since the throughput can be improved, it is possible to increase the number of users who can communicate simultaneously.

[Brief description of the drawings]

FIG. 1 is a block diagram schematically showing an overall configuration of a transmitting side and a receiving side in a wireless communication apparatus according to an embodiment of the present invention.

FIG. 2 is a block diagram showing an overall configuration of a transmission side of the wireless communication apparatus according to the embodiment.

FIG. 3 is a block diagram showing an overall configuration of a receiving side of the wireless communication apparatus according to the embodiment.

FIG. 4 is a diagram showing a data transmission state of the wireless communication apparatus according to the embodiment.

FIG. 5 is a diagram showing an error estimation table in the wireless communication device according to the embodiment.

FIG. 6 is a diagram showing an effect evaluation of data transmission efficiency of the wireless communication device according to the embodiment.

FIG. 7 is a diagram showing a data transmission state of the conventional Stop And Wait ARQ.

FIG. 8 is a diagram showing a data transmission state of the conventional Go Back N ARQ.

FIG. 9 shows a conventional Selective Repeat A.
Diagram showing RQ data transmission status

[Explanation of symbols]

 Reference Signs List 101 CRC adding section 102 Transmitting section 104 Receiving section 105 CRC checking means 106 Error estimating section 108 Estimating verifying section 109 Retransmission processing section 201 Data input means 202 CRC adding section 203 Transmit buffer 204 Transmitter 205 Receiver 206 Receiving buffer 207 Estimating verifying section 208 Retransmission processing unit 209 ARQ buffer 301 Receiver 302 CRC checking unit 303 Error determination unit 304 Data output unit 305 Error estimation table 306 Error estimation unit 307 Error correction unit 308 Forwarding unit 309 Transmitter

Claims (21)

[Claims] 1. A wireless communication method for transmitting transmission data in a predetermined data unit from a transmission side to a reception side, wherein the transmission side sequentially transmits the transmission data to the reception side and transmits each transmission data. Retransmits only necessary transmission data based on the error estimation data sent from the reception side, and the reception side receives the transmission data transmitted from the transmission side and estimates the error of each transmission data. And transmitting the error estimation data to the transmitting side. 2. A transmission data is transmitted from a transmission side to a reception side in a predetermined data unit, error estimation data transmitted from the reception side is verified, and it cannot be determined that the error estimation on the reception side is correct. A wireless transmission method wherein retransmission of transmission data is performed only in a case. 3. The radio transmission method according to claim 2, wherein as a result of verifying the error estimation data, if it is determined that the error estimation on the receiving side is correct, retransmission of the transmission data is not performed. 4. If the error estimation data cannot be determined to be correct on the receiving side as a result of verifying the error estimation data, data indicating that the error estimation is correct and an error can be corrected is returned to the receiving side. The wireless transmission method according to claim 2, wherein: 5. The transmission apparatus according to claim 2, wherein when transmitting transmission data in a predetermined data unit from the transmission side to the reception side, a CRC check bit and a sequence number are added to the transmission data. The wireless transmission method according to any one of the above. 6. A wireless communication apparatus comprising: receiving transmission data transmitted in a predetermined data unit from a transmission side; performing error estimation on each of the received transmission data; and transmitting error estimation data to the transmission side. Receiving method. 7. An error check is performed on the received transmission data, and as a result of the error check, if error estimation is possible, error estimation is performed and the error estimation data is transmitted to the transmission side. On the other hand, if error estimation is not possible,
The radio reception method according to claim 6, wherein a retransmission request signal is transmitted to the transmission side. 8. When a predetermined time elapses after receiving the transmission data or when data indicating that the estimation is correct is received from the transmission side, the received transmission data is regarded as not retransmitted from the transmission side, 8. The wireless reception method according to claim 6, wherein the transmission data is output as valid data. 9. After performing error estimation on the received transmission data and transmitting the error estimation data to the transmission side,
9. The radio receiving method according to claim 6, wherein the error is corrected when there is no retransmission of transmission data from the transmitting side even after a predetermined time has elapsed. 10. Performing error estimation on the received transmission data, transmitting the error estimation data to the transmission side, and then receiving data from the transmission side indicating that the error estimation can be determined to be correct. 9. The radio receiving method according to claim 6, wherein an error is corrected according to the error estimation. 11. An error estimation is performed on the received transmission data. If there is an error, whether an error detected using a memory table in which error information is recorded in advance is an error for which an error pattern can be estimated. The radio reception method according to claim 6, wherein the determination is performed. 12. A transmission unit for transmitting transmission data in a predetermined data unit from a transmission device to a reception device, an estimation verification unit for verifying error estimation data transmitted from the reception device, and a result of the verification. And a retransmitting means for retransmitting transmission data only when the error estimation in the receiving device cannot be determined to be correct. 13. A result of verifying the error estimation data,
13. The radio transmission apparatus according to claim 12, wherein when it is determined that the error estimation in the reception apparatus is correct, retransmission of transmission data is not performed. 14. A result of verifying the error estimation data,
13. The radio transmitting apparatus according to claim 12, wherein when it is determined that the error estimation in the receiving apparatus is correct, data indicating that the error estimation is correct and the error can be corrected is returned to the receiving apparatus. 15. A receiving unit for receiving transmission data transmitted in a predetermined data unit from a transmission device, an error checking unit for checking an error of the transmission data, and an error estimation is possible as a result of the checking. In the case of (1), the radio receiving apparatus comprises: an error estimating means for performing error estimation; and a transmitting means for transmitting the error estimation data or the retransmission request signal to the transmitting apparatus. 16. The transmission apparatus according to claim 15, wherein after transmitting the error estimation data to the transmission apparatus, if there is no retransmission of transmission data from the transmission apparatus within a predetermined time, the error is corrected. The wireless receiving device according to claim 1. 17. After transmitting the error estimation data to the transmitting device, when receiving data from the transmitting device indicating that the error estimation can be determined to be correct, correcting the error according to the error estimation. The wireless receiving device according to claim 15, wherein: 18. The error estimating means includes a memory table in which error information is recorded in advance, and when there is an error in transmission data received from the transmitting device, the detected error is detected using the memory table. 19. The radio receiving apparatus according to claim 15, wherein it is determined whether or not the error pattern can be estimated. 19. A mobile station device comprising: the wireless transmission device according to claim 12; and the wireless reception device according to any one of claims 15 to 18. 20. A base station device comprising: the wireless transmission device according to claim 12; and the wireless reception device according to any one of claims 15 to 18. 21. A communication system comprising the mobile station device according to claim 19 and the base station device according to claim 20.