KR20070115953A - Mobile communication system - Google Patents

Abstract

At a transmitting end, information data, which is data to be transmitted, is copied by a number of wireless transmission paths and then encoded. Each data is then subjected to a respective different pattern of puncture process and transmitted to a receiving end via a respective wireless transmission path. At the receiving end, dummy data is embedded into the punctured data and decoded. In this case, the puncture patters, at the transmitting end, for the respective different wireless transmission paths are prepared such that they are different from each other. In particular, the bits to be stolen are preferably different from each other among the different puncture patters. At the receiving end, if the decoding of the data for any wireless transmission path is failed, the data obtained from other wireless transmission paths are combined and decoded. In this way, the probability of decoding failure can be made small.

Description

Mobile communication system {MOBILE COMMUNICATION SYSTEM}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication system and is suitable for use when transmitting data to the same mobile station from different sectors and radio zones.

Diversity transmission (for example, intersector, radio zone diversity transmission) in the 3GPP system is realized by selective synthesis / replication distribution in the UE / RNC. That is, two or more wireless transmission paths transmit and receive the same data, and select the ones having good transmission path quality (the data arrived without error).

1 is an explanatory diagram of a diversity transmission (DHO: diversity handover) system between base stations.

In the downward direction, the base station controller RNC transmits the data to each base station Node B which has duplicated the data when transmitting the data to the mobile terminal in the soft handover state. Each base station performs error correction encoding processing such as convolutional coding (turbo coding) on the received data, and performs puncture processing to reduce the data amount, and then transmits the same transmission data to the mobile terminal UE. Send. The mobile terminal UE synthesizes and decodes data reached through each base station (three radio transmission paths in the example of FIG. 1).

Fig. 2 is a diagram showing how data amount is suppressed by puncture.

Using convolutional coding at a coding rate of 1/2, the data amount doubles, but it is possible to suppress this data amount by Puncture.

In other words, the data consisting of the first nine bits of X0 to X8 is convolutionally encoded to be, for example, data consisting of A0 to A8 and 18 bits of B0 to B8. By performing puncture, the bits of A2, A5, A8, B1, B4, and B7 are removed as shown in FIG. In this case, the data to be transmitted becomes data consisting of 12 bits. Therefore, 18 bits of data becomes 12 bits of data by Puncture, so that the data amount can be 3/4. Receiving the 12-bit data, the mobile terminal on the receiving side embeds dummy bits in these bit portions removed by Puncture and performs error correction decoding (for example, Viterbi decoding, turbo decoding, etc.). ), And decodes the data consisting of Y0 to Y8. Of course, these bits of Y0 to Y8 are the same as X0 to X8 unless a bit error occurs.

However, transmitting the same data through different radio transmission paths means that diversity gain is obtained, but it is not necessarily a benefit when strong error correction code / decoding processing is performed. In fact, in the H-ARQ method, different data is transmitted by different rate matching patterns, rather than the same data, in retransmission.

Patent Document 1 discloses a system in which different encoding methods are applied in accordance with transmission quality.

Patent Document 1: Japanese Patent Publication No. 2002-503918

One of the objects of the present invention is to provide an efficient communication system in consideration of error correction encoding and decoding processing.

The first mobile communication system of the present invention is a mobile communication system having a function of transmitting a radio signal to one mobile station from different sectors or different radio zones, and includes error correction for performing error correction encoding processing on transmission data. Encoding means, transmission means for puncturing the error corrected encoded data in a first puncture pattern, and transmitting the first corrected data to the mobile station from a first sector or a first wireless zone, and the error corrected encoded data in a second puncture pattern. And transmission means for puncturing and transmitting from the second sector or the second radio zone to the mobile station.

The second mobile communication system of the present invention is a mobile communication system having a function of transmitting a radio signal to one mobile station from different sectors or different radio zones, and performs error organization encoding processing on the transmission data, thereby organizing. Tissue encoding means for obtaining data, first redundant data, and second redundant data, and transmission means for transmitting a radio signal from the first sector or the first wireless zone to the mobile station based on the tissue data and the first redundant data. And transmission means for transmitting a radio signal to the mobile station from the first sector or the first radio zone based on the organization data and the second redundant data.

The third mobile communication system of the present invention is a mobile communication system having a function of transmitting a radio signal to one mobile station from different sectors or different radio zones, and performs error organization encoding processing on the transmission data, thereby providing an organization. Tissue encoding means for obtaining data, first redundant data, and second redundant data, and transmitting a radio signal from the first sector or the first wireless zone to the mobile station based on a part of the tissue data and the first redundant data. And transmitting means for transmitting a signal from the first sector or the first radio zone to the mobile station based on the other part of the organization data and the second redundant data.

A first mobile station of the present invention is a mobile station having a function of receiving radio signals from different sectors or different wireless zones, wherein error correction coded data punctured in a first puncture pattern has a first sector or a first wireless zone. Receiving means for receiving a first radio signal transmitted from the second radio signal transmitted from the second sector or the second radio zone, and the error correction encoded data punctured in a second puncture pattern; And decoding means for performing error correction decoding processing based on data obtained by synthesizing the second radio signal.

The second mobile station of the present invention is a mobile station having a function of receiving radio signals from different sectors or from different wireless zones, the first sector being based on first redundant data obtained by tissue coding and tissue encoded data. Or a second radio signal transmitted from the second sector or the second radio zone based on the first radio signal transmitted from the first radio zone, the second redundant data obtained by the tissue encoding, and the tissue encoded data. And receiving means for receiving, and decoding means for performing error correction decoding processing based on data obtained by combining the first radio signal and the second radio signal.

1 is an image diagram of a base station DHO method.

Fig. 2 is a diagram showing how data amount is suppressed by puncture.

3 is a diagram illustrating a conventional problem.

4 is a diagram for explaining a first embodiment of the present invention.

5 is a view for explaining a method of notifying a puncture pattern.

Fig. 6 is a diagram showing the flow of data in the first embodiment of the present invention.

7 is a flowchart (No. 1) of a DHO unit on the transmitting side and the receiving side according to the first embodiment.

8 is a flowchart (part 2) of the DHO unit on the transmitting side and the receiving side according to the first embodiment.

9 is a diagram (1) illustrating the second embodiment.

FIG. 10: is a figure (2) explaining 2nd Embodiment.

11 is a diagram illustrating a flow of data of the second embodiment.

FIG. 12 is a flowchart (No. 1) showing processing of the DHO unit on the transmitting side and the receiving side according to the second embodiment.

FIG. 13 is a flowchart (No. 2) showing processing of the DHO unit on the transmitting side and the receiving side according to the second embodiment.

14 is a diagram illustrating the effect of puncture processing.

15 is a diagram illustrating a flow of data processing according to the third embodiment.

FIG. 16 is a flowchart (part 1) showing processing of the DHO unit on the transmitting side and the receiving side according to the third embodiment.

FIG. 17 is a flowchart (No. 2) showing processing of the DHO unit on the transmitting side and the receiving side according to the third embodiment.

Below, 1st Embodiment is described.

4 is a diagram for explaining a first embodiment of the present invention.

On the transmission side, after performing error correction coding processing such as convolutional coding processing or turbo coding processing on the transmission data, a plurality of types of coded data are obtained by performing puncture processing using different puncture patterns, respectively, where Wireless transmission through other wireless transmission paths.

Here, different puncture patterns are used because data portions not included in data received through one wireless transmission path can be acquired through another wireless transmission path.

Further, as the plurality of radio transmission paths, a radio transmission path is conceived through a first sector and a second sector formed by the same radio base station, or a first zone and a second zone formed by different radio base stations. .

On the receiving side, data decoding is possible by decoding data received through any one of the plurality of wireless transmission paths, but data is decoded after combining data received from each of the plurality of wireless transmission paths. You may carry out.

For example, first, each of the data received through each radio transmission path is independently decoded, and all of them fail (e.g., error detection encoding processing such as CRC encoding is performed before error correction encoding, and decoding is performed. When an error is detected for one data), data obtained by synthesizing the data received through the plurality of wireless transmission paths is decoded.

Here, in the synthesis, a portion deleted by puncturing with the first puncture pattern among the data received through the first wireless transmission path is punctured with a second puncture pattern among the data received through the second wireless transmission path. Complementary processing is performed using the remaining data portion.

For example, a portion of A2 of puncture data # 1 punctured by the first puncture pattern is filled in with a portion of A2 of puncture data # 1 punctured by the second puncture pattern.

The common data portion, for example, A0 or the like, may be synthesized by obtaining an average of likelihood information (information indicating that the data is 1 or 0).

That is, the transmission data (Infomation Data) consisting of X0 to X8 is encoded at a coding rate 1/2 to obtain encoded data consisting of A0 to A8 and B0 to B8. Then, two pieces of data (puncture data # 0 and puncture data # 1) having different puncture processing are obtained from the first and second puncture patterns on the encoded data. Here, puncture data # 0 (see left side of the encoded data in Fig. 4) performs puncture processing to remove the bit portions indicated by A2, A5, A8, B1, B4, and B7. Right side of encoded data) A puncture process is performed to remove the bit portions indicated by A1, A4, A7, B2, B5, and B8. The Puncture data # 0 is transmitted from the first wireless transmission path, and the Puncture data # 1 is transmitted from the second wireless transmission path. The first wireless transmission path and the second wireless transmission path are transmission paths that can be separated by at least one of a spreading code, a frequency, and a time.

Here, the pattern of puncture performed in each radio transmission path is negotiated between the mobile terminal and the base station for each radio transmission path in advance. The data transmitted to the first wireless transmission path # 0 and the second wireless transmission path # 1 are independently decoded to be decoded data Y0 to Y8.

As described above, if no error is detected in the decoding result for the data received through any one of the wireless transmission paths, the data is output as the decoding result, and the special data for the data received through the two wireless transmission paths is output. Synthesis is unnecessary.

However, if an error is detected in the decoding result for the data received through all the wireless transmission paths, the data received through the wireless transmission path # 1 is combined with the data received through the wireless transmission path # 0 (the average of the likelihoods). May be taken, but it is only supplemented here) and then decoded again. Alternatively, the data received via the wireless transmission path # 0 is synthesized with the data received via the wireless transmission path # 0 (the likelihood may be averaged, but only supplemented here), and then decoding is performed again. For the complementary state, refer to the block on the left side (compensating the data on the wireless transmission line # 0 side) and the block on the right side (compensating the data on the wireless transmission line # 1 side) in the second row below in FIG.

Error detection coding, error correction coding, and different punctures may be performed by a DHO processing unit in an RNC (base station control apparatus) connected to a plurality of base stations and functioning as an apparatus higher on the base station. You may carry out. Apart from this encoding, of course, the error correction encoding process may be further performed in the base station or the like in order to further enhance the resistance to transmission path errors.

FIG. 5 is a diagram for explaining a puncturing pattern notification method that can be used as a form of negotiation of a puncturing pattern.

The puncture pattern in each radio transmission path needs to negotiate in advance on the data transmission / reception side. It is also possible to notify the receiving side of the puncture pattern generated on the transmitting side through the in channel. When notifying in-channel, information to be provided to the encoded data is defined, and the puncture pattern is notified in accordance with this information.

As a method of notifying in-channel, there is a method of adding to transmission data as shown in Fig. 5 (a), or a method of notifying as control information in another channel (Figs. Fig. 5A is a header of a frame for transmitting encoded data, which adds puncture pattern information, and the receiving side performs complementary processing using data received through another wireless transmission path based on the added puncture pattern information. will be. 5B illustrates an example in which the control channel and the data channel are separate channels. In particular, in FIG. 5B, the DPDCH is a data channel and a channel through which coded data is transmitted. For example, the DPDCH can be transmitted through an I channel and a Q channel, respectively. At that time, the spreading process may be performed after spreading using different spreading codes. The DPCCH is a control channel, and bits such as Pilot, TFCI, FBI, and TPC are sent, and puncture pattern information is sent embedded in empty bits. 5 (c) shows a case where the multiple scheme is time multiplex, and DPDCH and DPCCH are embedded in one slot by time division. Here, the puncture pattern information is stored in an empty area of the control channel that stores the TPC, PILOT bits, and the like.

Preferably, the puncture pattern for both the first puncture pattern and the second puncture pattern of data transmitted through the first radio transmission path and the second radio transmission path from the sector (zone) forming the first radio transmission path. Send the information.

By defining identification data (ID) for each puncture pattern, and transmitting ID information multiplexed in the order of the first wireless transmission path and the second wireless transmission path, the receiving side forms a sector (zone) that forms the first wireless transmission path. ), Both the first puncture pattern and the second puncture pattern can be obtained with a smaller data amount.

6 is a diagram showing an example of the flow of data according to the first embodiment of the present invention.

First, transmission data (Information Data) is convolutionally coded (preferably, the transmission data is already subjected to an error detection encoding process) and copied in two. Each is punctured with a different puncture pattern, turbo coded, and transmitted to a wireless transmission path. Upon receiving them at the receiving end, turbo decoding is performed to obtain a decoding result.

Then, a depuncture process corresponding to a process opposite to that of the different puncture process is performed on the decoding result corresponding to each radio transmission path, and decoding is performed by Viterbi decoding or the like.

However, at the time of these decoding, the complement by data received from another radio transmission path is not performed.

As described above, each of the turbo-decoded data is synthesized to perform Viterbi decoding. In this decoding, complementation is performed by data received from other radio transmission paths.

Finally, among the decoding results, decoded data for which no error is detected is selected, and Information Data is obtained from the receiving side.

7 and 8 are flowcharts of a transmitting side and a receiving side according to the first embodiment.

In the processing on the transmitting side of FIG. 7, in step S10, the DHO unit (a portion for performing diversity handover, which is here referred to as the RNC) receives the transmission data (the error detection encoded transmission data), and the step In S11, convolutional coding is performed. In step S12, puncture is performed. At this time, the puncture pattern uses a different one for each transmission path. In step S13, the punctured data is transmitted.

In the processing on the receiving side in FIG. 8, in step S15, the reception of data is awaited. Upon receiving the data, in step S16, dummy bits are inserted for each of the transmitted paths (that is, data received through other transmission paths is not inserted here). In step S17, Viterbi decoding is performed, and in step S18, it is determined whether or not the decoding succeeded. If the determination in step S18 is YES, the data is transmitted to the subsequent processing unit in step S22. If the determination in step S18 is no, then in step S19, data from each radio transmission path is synthesized (that is, data received through another radio transmission path is used) and decoded. In step S20, it is determined whether or not the decoding was successful. If it is determined in step S20 that the decoding is successful, the data is transmitted to the subsequent processing unit in step S22. If it is determined in step S20 that it has failed, the data is discarded and the upper layer is notified of the fact.

Next, a second embodiment of the present invention will be described.

In the second embodiment, after performing the tissue encoding (for example, turbo encoding) processing, the transmitting side assigns and transmits redundant redundant data to each of the wireless transmission paths.

In the first wireless transmission path, the tissue code and the first redundant data (for example, redundant data obtained by convolutional coding of the tissue code and do not include the second redundant data) are transmitted. And the redundancy code and the second redundant data (for example, redundancy data obtained by interleaving the tissue code and then convolutionally encoding the first redundancy data).

On the receiving side, data decoding on a single transmission path is possible, but when data decoding on each wireless transmission path fails, data decoding is performed by synthesizing (combining) different redundant data received from each wireless transmission path. do.

Synthesis is the meaning described above. For example, the data is supplemented or the likelihood is averaged.

Data amount reduction processing such as puncture or the like may be performed on data having different redundant codes. Further, the first embodiment may be applied to the original data. For example, it is also possible to interleave data to implement different punctures for each transmission path.

9 and 10 are diagrams describing the second embodiment.

9 is a structural example of a turbo encoder used in the second embodiment. The input data is input to the multiplexer 10. The input data is input to the recursive systematic convolutional (RSC) coder RSC1, encoded, and then input to the multiplexer 10. In the multiplexer 10, input data and RSC encoded data are multiplexed to become output data A. The input data is also input to the multiplexer 11. The input data is further interleaved by the interleaver 12, and then encoded by the RSC encoder RSC2 and input to the multiplexer 11. In the multiplexer 11, input data and data interleaved and RSC encoded are multiplexed to be output data B. The output data A and the output data B become different redundant data, respectively.

10 is a diagram illustrating an operation of the second embodiment.

Data A, which is Information Data (preferably error detection coded data), is encoded by the encoder of FIG. 9, and redundant redundancy data X0 and X1 are added to data A, respectively, and are composed of Data # 0 and Data # 1. Data # 0 and Data # 1 are independently decoded on the receiving side using redundant data X0 and X1, respectively. If this decoding fails, redundant data X1 of Data # 1 is added to Data # 0, redundant data X0 of Data # 0 to Data # 1, and data A is stored using redundant data, X0, X1. Decrypt By doing in this way, the possibility of failure of decoding can be made small.

It is also possible to decode by using both Data # 0 and 1 (complementary or synthesized) from the beginning.

Encoding may be performed by the DHO processing unit in the RNC (base station control apparatus), or may be performed by the base station side. Of course, apart from this encoding, further error correction encoding processing may be performed to further enhance the resistance to transmission path errors.

11 is a diagram illustrating a flow of data of the second embodiment.

Information data which is transmission data is copied and distributed for each radio transmission path.

Here, two radio transmission paths are assumed. Information data for each radio transmission path is encoded by the encoder of FIG. 9, and different redundant data x and y are added, respectively. Then, the encoded data is sent to the receiving side via the wireless transmission path and received. The receiving side decodes the information data using redundant data x, y, and both x and y. Then, the selector selects the data having the smallest error rate to obtain original information data.

12 and 13 are flowcharts showing processes of the DHO unit on the transmitting side and the receiving side according to the second embodiment.

12 is a flow on the transmitting side. When the DHO unit receives the data to be transmitted in step S25, in step S26, turbo encoding is performed for each transmission path using the encoder of FIG. 9, and redundant redundant data are generated for each transmission path. In step S27, the encoded data is transmitted.

13 is a flow on the receiving side. In step S30, it waits until data is received. In step S31, the received data is decoded by Viterbi. In step S32, it is determined whether or not the decoding succeeded. If it is determined in step S32 that the method is successful, the flow advances to step S36 to transfer data to the subsequent processing unit. If it is determined in step S32 that it has failed, in step S33, data from each transmission path is synthesized, redundant data used in each transmission path is synthesized, and the data is decoded using this. In step S34, it is determined whether or not the decoding succeeded. If it is determined that the result of the determination in step S34 is successful, the data is transmitted to the subsequent processing unit in step S36. If it is determined in step S34 that the decoding has failed, in step S35, the data is discarded and the upper layer is notified of the fact.

Below, 3rd Embodiment is described.

After performing the turbo encoding process, the transmitting side assigns redundant redundant data to each of the wireless transmission paths and transmits them. However, unlike the second embodiment, the first interleave processing is performed on the tissue data (original data A before turbo coding) as the processing before data transmission. Further, the first interleaved data is divided into respective radio transmission paths, and redundant data generated when the above-described encoding process is performed is applied thereto. However, redundant redundant data is different for each transmission path. In addition, the second interleaving process is performed on the entire data to which the redundant code is assigned.

In the division, it is also possible to divide without duplication in each of the wireless transmission paths, or may be divided so that duplication does not become the same data.

The receiving side performs a second interleaving process on the data received from each radio transmission path. Thereafter, the combining process of the divided original data is performed. A first deinterleaving process is performed on the combined data to obtain original data. This data is decoded by combining one or more of the correction codes transmitted from each radio transmission path.

In the case of combining the original data, if there is no duplication, it is simply combined, and in the case of duplication, the duplication may be performed without combining the duplicated portions (or combining the different portions while averaging the duplicated portions).

A data amount reduction process such as a puncturer may be performed on data having different redundant codes. However, when the present embodiment is implemented by the base station control device and data is distributed to each base station, the puncture process is effective for compressing the data amount between the base station control device and the base station.

14 is a diagram illustrating the effect of puncture processing.

In this example, turbo encoding is performed at the time of encoding, so that the data amount is tripled, the puncturing amount is 2/3, and the transmission paths are two. If the length of the original data is 90, redundant data 1 and 2 of length 90 are generated by the encoding. Therefore, the total length becomes 270. After interleaving, the data length becomes 45 when data is segmented (segmented) rather than redundant data to be assigned to the transmission path. When the data and redundant data are punctured, the data length is 30, the redundant data 1 and 2 are respectively 60, and the data length to be transmitted to one transmission path is 90. In the case of not puncturing, since the data length 45 plus the redundant data length 90 becomes the data length to be transmitted to one transmission path, it can be seen that the amount of data to be transmitted is considerably reduced.

15 is a diagram illustrating a flow of data processing according to the third embodiment.

Information data A as transmission data is encoded to generate different redundant data X0 and X1. Then, only the data A portion is first interleaved to generate data B. Next, to classify data into two transmission paths, data B is divided into data B1 and B2, and redundant data X0 and X1 are added to each. Then, the second interleave is performed only on the original data portion and sent to the transmission path. On the receiving side, B1 and B2 are subjected to second interleaving processing corresponding to the second interleaving process, data B1 and B2 are combined, and redundant data X0 and X1 are added. First deinterleaving processing corresponding to the first interleave is performed on B1 + B2 to obtain data A. By decoding the data A using redundant data X0 and X1, data A which is the first Information Data is obtained.

16 and 17 are flowcharts showing processing of the DHO unit on the transmitting side and the receiving side according to the third embodiment.

Fig. 16 shows processing on the transmitting side. When the DHO unit receives the data to be transmitted in step S40, turbo encoding is performed on this data in step S41, and in step S42, the first interleave process is performed only on the original data. In step S43, the data after the interleave process is divided. In step S44, the redundant data and redundant data generated at the time of encoding are combined, and in step S45, the combined data is subjected to the second interleaving process. In step S46, data is transmitted for each transmission path.

17 shows processing on the receiving side. In step S47, it waits until data is received. If data is received in step S47, only the original data is subjected to the second deinterleave process in step S48. In step S49, the data received from each transmission path are assembled, and in step S50, only the original data is first deinterleaved, and in step S51, the data after the deinterleave processing and the redundant data are used for error correction. To perform decoding. In step S52, it is determined whether or not the decoding succeeded. If it is determined in step S52 that success has occurred, the data is transmitted to the subsequent processing unit in step S54. If it is determined in step S52 that it has failed, in step S53, the data is discarded and the upper layer is notified of the fact.

Since the DHO method of embodiment of this invention has a high DHO effect compared with the current DHO method (selective synthesis method), it is possible to suppress transmission power. Thereby, the finite radio capacity can be utilized more effectively.

Conventionally, when data on both wireless transmission paths cannot be decoded due to radio quality deterioration, a determination is made as a data error. However, in this system, data decoding can be attempted again using error data. Error tolerance is high.

In the second and third embodiments, since the amount of data to be transmitted is smaller than the present phenomenon, redundant data for error correction is distributed and transmitted to a plurality of wireless transmission paths), whereby an increase in radio capacity and suppression of transmission power can be expected.

Claims (5)

A mobile communication system having a function of transmitting a radio signal to one mobile station from different sectors or different radio zones, Error correction encoding means for performing error correction encoding processing on the transmission data; Transmitting means for puncturing the error-correction-coded data in a first puncture pattern and transmitting it from the first sector or the first radio zone to the mobile station; Transmitting means for puncturing the error-correction-coded data in a second puncture pattern and transmitting it from the second sector or the second radio zone to the mobile station; Mobile communication system comprising a. A mobile communication system having a function of transmitting a radio signal to one mobile station from different sectors or different radio zones, Tissue encoding means for performing error tissue encoding processing on the transmission data to obtain tissue data, first redundant data, and second redundant data; Transmitting means for transmitting a radio signal to the mobile station from a first sector or a first radio zone based on the tissue data and the first redundant data; Transmission means for transmitting a radio signal from the first sector or the first radio zone to the mobile station based on the tissue data and the second redundant data; Mobile communication system comprising a. A mobile communication system having a function of transmitting a radio signal to one mobile station from different sectors or different radio zones, Tissue encoding means for performing error tissue encoding processing on the transmission data to obtain tissue data, first redundant data, and second redundant data; Transmitting means for transmitting a radio signal to the mobile station from a first sector or a first radio zone based on a part of the tissue data and the first redundant data; Transmitting means for transmitting a radio signal from the first sector or the first radio zone to the mobile station based on the other part of the tissue data and the second redundant data; Mobile communication system comprising a. A mobile station having a function of receiving radio signals from different sectors or different radio zones, The first wireless signal transmitted from the first sector or the first wireless zone with the error correction encoded data punctured with the first puncture pattern, and the error correction encoded data with the second puncture pattern punctured with the second sector or second Receiving means for receiving a second radio signal transmitted from the radio zone; Decoding means for performing error correction decoding processing based on data obtained by combining the first radio signal and the second radio signal A mobile station comprising a. A mobile station having a function of receiving radio signals from different sectors or different radio zones, The first redundant data obtained by tissue coding, the first radio signal transmitted from the first sector or the first wireless zone based on the tissue encoded data, the second redundant data obtained by the tissue coding, and the tissue coding Receiving means for receiving a second radio signal transmitted from a second sector or a second radio zone based on the data; Decoding means for performing error correction decoding processing based on data obtained by combining the first radio signal and the second radio signal A mobile station comprising a.

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