CN102315919A - Method and equipment for combining hybrid automatic repeat request (HARQ) data - Google Patents

Abstract

The embodiment of the present invention discloses a method and equipment for combining HARQ data, which are used to solve the problem that the performance of the combined data will drop sharply when the performance of the received retransmission data suddenly deteriorates in the CHASE combining in the existing HARQ technology. The method includes: determining the weight value of each slot according to the performance parameter value of each slot in the first HARQ data and the second HARQ data, wherein the first HARQ data is HARQ data that cannot be decoded correctly, and the second HARQ data is HARQ data retransmitted for the first HARQ data; combining the slots in the same position in the first HARQ data and the second HARQ data according to the determined weight. Therefore, it is possible to flexibly adjust the weight of the received HARQ data when combined, thereby improving the performance of the combined HARQ data.

Description

A method and device for combining HARQ data

technical field

The present invention relates to the technical field of wireless communication, in particular to a method and equipment for combining HARQ data.

Background technique

When transmitting digital signals on a wireless channel, due to the unsatisfactory channel transmission characteristics and the influence of additive noise, errors will inevitably occur in the digital signals received by the receiving end. In order to improve the digital signal quality and decoding accuracy at the receiving end, HARQ (Hybrid Automatic Repeat request) technology can be used. HARQ technology combines the advantages of ARQ (Automatic Repeat request, automatic repeat request) technology and FEC (Forward Error Correction, forward error correction) technology, which reduces the decoding complexity of FEC mode to a certain extent and avoids the information of ARQ mode Disadvantages of poor transmission continuity. Specifically, each data packet sent contains parity bits for error correction and error detection. If the number of error bits in the received packet is within the error correction capability, the error will be corrected by itself; when the error is serious, it has exceeded When the error correction capability of FEC is low, the originator is allowed to retransmit.

A commonly used combining technique in the HARQ technology at present is Chase Combining (CHASE).

In catch-up combining, after the sending end makes a retransmission decision, it will resend all or part of the data frame sent last time. The receiving end does not simply discard the data frame that cannot be decoded correctly like ARQ. Instead, it is saved first, and after the retransmitted data frame is received, it is merged with the wrongly decoded data frame just saved, and then decoded, so that the signal-to-noise ratio of the combined signal may decrease If the signal-to-noise ratio is higher than that of the signal received for the first time, the probability of correct decoding is high. Even though each received data frame may not be able to be decoded correctly individually, the more data frames are received, the greater the probability of the combined result being correctly decoded.

In practical applications, for catch-up combining, it is assumed that the bit error rate of the data received at the previous receiving end is λ ₁ , and the bit error rate of the currently received data is λ ₂ , but λ ₂ may be much greater than λ ₁ due to channel mutations. The data bit error rate λ obtained after the direct equal combination may also be much larger than λ ₁ . In this way, not only the receiving end cannot decode correctly this time, but also the data this time is used as the basis for subsequent merging, which may also cause subsequent data to be incorrectly decoded.

To sum up, in the existing HARQ technology, when the performance of the CHASE combination of the received retransmission data suddenly deteriorates, the performance of the combined data will drop sharply.

Contents of the invention

Embodiments of the present invention provide a method and device for combining HARQ data, which are used to solve the problem that the performance of combined data will drop sharply when the performance of received retransmission data suddenly deteriorates in CHASE combining in the existing HARQ technology.

A method for combining HARQ data provided by an embodiment of the present invention includes:

Determine the weight of each slot according to the performance parameter value of each time slot slot in the first HARQ data and the second HARQ data, wherein the first HARQ data is HARQ data that cannot be decoded correctly, and the second HARQ data is for the second HARQ data. HARQ data for retransmission of HARQ data;

The slots in the same position in the first HARQ data and the second HARQ data are combined according to the determined weight.

A hybrid automatic repeat request HARQ data merging device provided in an embodiment of the present invention includes:

The determination module is used to determine the weight value of each slot according to the performance parameter value of each slot in the first HARQ data and the second HARQ data, wherein the first HARQ data is HARQ data that cannot be decoded correctly, and the second HARQ data is the HARQ data retransmitted for the first HARQ data;

The merging module combines the slots in the same position in the first HARQ data and the second HARQ data according to the determined weight.

Since the method for combining HARQ data provided by the embodiment of the present invention includes: determining the weight of each slot according to the performance parameter value of each slot in the first HARQ data and the second HARQ data, wherein the first HARQ data cannot be decoded correctly The HARQ data, the second HARQ data is the HARQ data retransmitted for the first HARQ data; the slots in the same position in the first HARQ data and the second HARQ data are combined according to the determined weight. Therefore, it is possible to flexibly adjust the weight of the received HARQ data when combined, thereby improving the performance of the combined HARQ data. The times of retransmitting data are further reduced, thereby improving decoding efficiency.

Description of drawings

FIG. 1 is a schematic diagram of a method for combining HARQ data in an embodiment of the present invention;

FIG. 2 is a schematic diagram of grouping slots in first HARQ data and second HARQ data in an embodiment of the present invention;

3 is a schematic diagram of a method for combining HARQ data in an OFDMA system in an embodiment of the present invention;

Fig. 4 is a schematic diagram of equipment for combining HARQ data in an embodiment of the present invention.

Detailed ways

The inventor noticed during the invention process that, in essence, the main problem of CHASE merging is that it cannot guarantee whether the merging effect of retransmitted data on old data is a positive gain or a negative gain. This is due to the limitations of the CHASE mechanism itself. The CHASE mechanism requires the sending end to resend the same data packet every time, and adopts the same modulation and coding method. After such data reaches the receiving end, its bit error rate depends completely on the channel conditions passively, and the performance is poor. For Incremental Redundancy (IR), another combination technology of HARQ technology, regardless of its complicated implementation process, its purpose is to reduce the proportion of channel noise data in the entire useful transmission information. ratio, thereby reducing the influence of channel noise data on the combined data. If we learn from the idea of IR in CHASE, that is, consider reducing the proportion of channel noise data in the entire useful transmission information in CHASE merging, we can realize a new merging method that combines CHASE and IR ideas at the physical layer .

A method for combining HARQ data provided by an embodiment of the present invention determines the weight of each slot according to the performance parameter value of each slot in the first HARQ data and the second HARQ data, wherein the first HARQ data is not correct For the decoded HARQ data, the second HARQ data is HARQ data retransmitted for the first HARQ data; the slots in the same position in the first HARQ data and the second HARQ data are combined according to the determined weight. Therefore, it is possible to flexibly adjust the weight value of the received HARQ data when combined, thereby improving the performance of the combined HARQ data; further reducing the number of times of retransmitting data, and improving decoding efficiency.

The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

As shown in FIG. 1, a method for combining HARQ data provided by an embodiment of the present invention includes:

Step 101, according to the performance parameter value of each slot in the first HARQ data and the second HARQ data, determine the weight value of each slot, wherein the first HARQ data is HARQ data that cannot be decoded correctly, and the second HARQ data is for The first HARQ data is the HARQ data for retransmission.

Step 102, combining the slots in the same position in the first HARQ data and the second HARQ data according to the determined weight.

In step 101, the performance parameter value may be CINR (Carrier to Interference and Noise Ratio, carrier to interference and noise ratio) value, correct bit rate value, useful power value and other parameter values that can characterize the performance of the slot.

It should be emphasized that the performance parameter values are not limited to the above parameter values, and other parameter values that can characterize slot performance are also applicable to the embodiments of the present invention.

The first HARQ data may be HARQ data sent for the first time, or combined HARQ data.

Wherein, the HARQ data sent for the first time refers to the HARQ data that is saved and waits to be combined with the next retransmission data because it cannot be decoded correctly in the data sent for the first time.

The merged HARQ data refers to the HARQ data that cannot be correctly decoded after being merged and is kept waiting to be merged with the next retransmission data. For example, the HARQ data sent for the first time and the retransmitted HARQ data cannot be merged Correctly decoded HARQ data; or HARQ data that cannot be correctly decoded after combining the combined HARQ data (after at least one combination) and the retransmitted HARQ data.

Specifically, the slots in the first HARQ data and the second HARQ data are divided into multiple groups, wherein the slots in each group have the same position in the HARQ data, and the performance parameter value of the slot is divided by the values of all slots in the group where the slot is located The sum of performance parameter values, the obtained value is used as the weight of the slot.

According to different performance parameters, the method of determining the weight value of the slot is described in detail.

Method 1. The performance parameter value is the CINR value of the slot.

Divide the slots in the first HARQ data and the second HARQ data into multiple groups, wherein the slots in each group have the same position in the HARQ data, refer to Figure 2 for details, and divide the slots in the first HARQ data and the second HARQ data respectively The slots in the same position as the slot form a group, such as: slot1 and slot1' form a group, slot2 and slot2' form a group, etc.;

Divide the CINR value of the slot by the sum of the CINR values of all slots in the group where the slot belongs, and the obtained value is used as the weight of the slot.

For example, assuming that both the first HARQ data and the second HARQ data include M slots, the CINR value of the mth (m is a natural number less than or equal to M, the same below) bit slot of the first HARQ data is C _i (i is a natural number, The same below), the CINR value of the mth slot in the second HARQ data is C _j (j is a natural number, the same below), then:

The sum of the CINR values of the m-th slot is (C _i +C _j ),

The weight of the mth slot in the first HARQ data is W _i =C _i /(C _i +C _j ),

The weight of the mth slot in the second HARQ data is W _j =C _j /(C _i +C _j ).

Mode 2, the performance parameter value is the correct bit rate value of the slot.

Wherein, the correct bit rate can be obtained according to the bit error rate of the slot, for example, the bit error rate of the slot is λ, and the correct rate is (1-λ). The specific process of determining the slot weight in the second method is similar to the method of determining the slot weight according to the CINR in the first method, and will not be repeated here.

Method 3: The performance parameter value is the useful power value of the slot. The specific process of determining the slot weight in mode 3 is similar to the way in which the slot weight is determined according to the CINR in mode 1, and will not be repeated here.

It should be emphasized that the manner of determining the slot weight according to the performance parameter of the slot is not limited to the above three manners, and other manners capable of determining the slot weight according to the performance parameter of the slot are also applicable to the embodiments of the present invention.

For the first method, the performance parameter value is the CINR value of the slot, and the CINR value of each slot in the first HARQ data and the second HARQ data needs to be determined.

Specifically, if the first HARQ data is the HARQ data sent for the first time, the CINR value C _m of the mth slot in the first HARQ data can be determined according to the following formula 1:

C _m =P _sm /P _nm ......... Formula 1.

Wherein, P _sm is the sum of useful powers of multiple carriers of the mth slot, and P _nm is the sum of useless powers of multiple carriers of the mth slot.

Since m can take different values, the CINR value of each slot in the first HARQ data can be determined according to Formula 1.

If the first HARQ data is combined HARQ data, the CINR value C of the m-th slot in the first HARQ data can be determined according to Formula 2:

C=(CiN+Cj)/(N+1)... Formula 2.

Wherein, N is the number of times of combining (the same below), C _i is the CINR value of the mth slot in the first HARQ data, and C _j is the CINR value of the mth slot in the second HARQ data.

Since m can take different values, the CINR value of each slot in the first HARQ data can be determined according to Formula 2.

In addition, the second HARQ data is HARQ data retransmitted for the first HARQ data, so the second HARQ data is data that has not been combined, so the CINR value of each slot in the second HARQ data can also be determined according to Formula 1.

It should be noted that the method for determining the CINR value of the slot in the first HARQ data and the second HARQ data is not limited to the above formula, and other methods that can determine the CINR value of the slot in the first HARQ data and the second HARQ data are also the same Applicable to the embodiment of the present invention.

The step of specifically determining the CINR value of the slot in the first HARQ data and the second HARQ data may be performed in any step before the CINR value of the slot needs to be used.

After step 102, the combined soft information value of each slot can also be determined.

Assuming that the soft information value of the mth slot in the first HARQ data is V _i , the weight corresponding to the mth slot in the first HARQ data is W _i ; the soft information value of the mth slot in the second HARQ data is V _j , the weight corresponding to the mth slot in the second HARQ data is W _j , and the combined soft information value V of the mth slot can be calculated according to Formula 3:

V=(V _i W _i N+V _j W _j )/(N+1)............Formula 3.

Since m can take different values, the soft information value of each slot in the combined HARQ data can be determined according to Formula 3.

After the combined soft information value of each slot is determined, the soft information value of each slot in the combined HARQ data may also be saved, and the saved soft information value may be sent to the decoder for decoding.

As shown in Figure 3, a preferred embodiment of the method for the combination of HARQ data provided by the present invention, its specific application system is an OFDMA system, the method includes the following steps:

Step 301. From the received baseband signal, extract the subcarriers required for decoding the currently processed decoded data block.

Step 302, perform channel estimation and channel compensation on subcarriers.

Step 303, demodulate the channel-compensated subcarrier data to obtain initial soft information data.

Step 304, determine the CINR value of each slot in the HARQ data sent for the first time or the HARQ data retransmitted.

Step 305, perform initial soft information data extraction and basic FEC processing.

Step 306 , judging whether it is the retransmitted HARQ data, if yes, go to step 307 , otherwise go to step 309 .

Step 307: Determine the weight of each slot according to the CINR value of each slot in the first HARQ data and the second HARQ data, wherein the first HARQ data is HARQ data that cannot be decoded correctly, and the second HARQ data is for the second HARQ data For the HARQ data for retransmission of the first HARQ data, the slots in the same position in the first HARQ data and the second HARQ data are combined according to the determined weight.

Step 308, determine the CINR value and soft information value of the merged slot.

Step 309: Save the CINR value and soft information value of each slot in the HARQ data and send the HARQ data to the decoder for decoding, where the HARQ data is the HARQ data sent for the first time or the combined HARQ data.

Step 310, judging whether all the HARQ data has been processed. If yes, end the process; otherwise, go to step 301.

It should be noted that the determination of the CINR value of each slot in the HARQ data sent for the first time or in the retransmitted HARQ data is not limited to step 304 in FIG. It is determined at any step before the CINR value of the slot in the HARQ data. Determining the CINR value of the combined slot is not limited to step 308 in FIG. 3 , and may be determined at any step before using the CINR value of the combined slot.

As shown in FIG. 4 , the device for combining HARQ data provided by the embodiment of the present invention includes: a determining module 401 and a combining module 402 .

The determination module 401 is configured to determine the weight of each slot according to the performance parameter value of each slot in the first HARQ data and the second HARQ data, wherein the first HARQ data is HARQ data that cannot be decoded correctly, and the second HARQ data The data is HARQ data retransmitted for the first HARQ data.

The combining module 402 combines the slots in the same position in the first HARQ data and the second HARQ data according to the determined weight.

Wherein, the performance parameter value may be a CINR value, a correct bit rate value, a useful power value, and other parameter values that can characterize the performance of the slot.

It should be emphasized that the performance parameter values are not limited to the above parameter values, and other parameter values that can characterize slot performance are also applicable to the embodiments of the present invention.

The first HARQ data may be HARQ data sent for the first time, or combined HARQ data.

The combined HARQ data refers to the data after combining the HARQ data sent for the first time and all the retransmitted HARQ data. However, since the merged data may still not be correctly decoded, it is saved and waits to be merged with the retransmitted data.

The determining module 401 is specifically configured to: divide the slots in the first HARQ data and the second HARQ data into multiple groups, wherein the slots in each group have the same position in the HARQ data, and divide the performance parameter value of the slot by the group where the slot is located The sum of the performance parameter values of all slots in , and the obtained value is used as the weight of the slot.

According to different performance parameters, the method of determining the weight value of the slot is described in detail.

Method 1. The performance parameter value is the CINR value of the slot:

The determination module 401 divides the slots in the first HARQ data and the second HARQ data into multiple groups, wherein the slots in each group have the same position in the HARQ data; divide the CINR value of the slot by the CINR of all slots in the group where the slot is located The sum of the values, the obtained value is used as the weight of the slot.

For example, assuming that both the first HARQ data and the second HARQ data include M slots, the CINR value of the mth (m is a natural number less than or equal to M, the same below) slot of the first HARQ data is C _i (i is a natural number, The same below), the CINR value of the mth slot in the second HARQ data is C _j (j is a natural number, the same below), then:

The sum of the CINR values of the m-th slot is (C _i +C _j ),

The weight of the mth slot in the first HARQ data is W _i =C _i /(C _i +C _j ),

The weight of the mth slot in the second HARQ data is W _j =C _j /(C _i +C _j ).

Mode 2, the performance parameter value is the correct bit rate value of the slot.

Wherein, the correct bit rate can be obtained according to the bit error rate of the slot, for example, the bit error rate of the slot is λ, and the correct rate is (1-λ). The specific process of determining the slot weight in the second method is similar to the method of determining the slot weight according to the CINR in the first method, and will not be repeated here.

Method 3: The performance parameter value is the useful power value of the slot. The specific process of determining the slot weight in mode 3 is similar to the way in which the slot weight is determined according to the CINR in mode 1, and will not be repeated here.

It should be emphasized that the manners of determining the slot weight according to the performance parameters of the slots by the determining module 401 are not limited to the above three manners, and other manners capable of determining the slot weights according to the performance parameters of the slots are also applicable to the embodiment of the present invention.

For mode 1, the performance parameter value is the CINR value of the slot, and the determining module 401 is further configured to: determine the CINR value of each slot in the first HARQ data and the second HARQ data.

Specifically, if the first HARQ data is HARQ data sent for the first time, the determining module 401 may determine the CINR value C _m of the mth slot in the first HARQ data according to Formula 1.

Since m can take different values, the determining module 401 can determine the CINR value of each slot in the first HARQ data according to Formula 1.

If the first HARQ data is combined HARQ data, the determining module 401 may determine the CINR value C of the mth slot in the first HARQ data according to Formula 2.

Since m can take different values, the determining module 401 can determine the CINR value of each slot in the first HARQ data according to Formula 2.

In addition, the second HARQ data is HARQ data retransmitted for the first HARQ data, so the second HARQ data is data that has not yet been combined, so the determination module 401 can also determine the slot of each slot in the second HARQ data according to Formula 1 CINR value.

It should be noted that the method for determining the CINR value of the slot in the first HARQ data and the second HARQ data by the determining module 401 is not limited to the above formula, other methods that can determine the CINR value of the slot in the first HARQ data and the second HARQ data The method is also applicable to the embodiment of the present invention.

The device for combining HARQ data provided by the embodiment of the present invention may also include:

Calculation module 403, configured to determine the combined soft information value of each slot.

In a specific implementation, the calculation module 403 may determine the soft information value of the mth slot after the combination according to Formula 3.

Since m can take different values, the soft information value of each slot after merging can be determined according to formula three.

It should be noted that here it is assumed that the value of the entire slot is V _i or V _j , and in practical applications V _i or V _j should correspond to the value of each soft information value byte in the slot.

Wherein, the merging module 402 may also save the soft information value of the slot in the combined HARQ data, and send the saved soft information value to the decoder for decoding.

Those skilled in the art should understand that the embodiments of the present invention may be provided as methods, systems, or computer program products. Accordingly, the present invention can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart or blocks of the flowchart and/or the block or blocks of the block diagrams.

While preferred embodiments of the invention have been described, additional changes and modifications to these embodiments can be made by those skilled in the art once the basic inventive concept is appreciated. Therefore, it is intended that the appended claims be construed to cover the preferred embodiment as well as all changes and modifications which fall within the scope of the invention.

It can be seen from the foregoing embodiments that the weight of each slot is determined according to the performance parameter value of each slot in the first HARQ data and the second HARQ data in the embodiment of the present invention, wherein the first HARQ data cannot be correctly translated coded HARQ data, the second HARQ data is HARQ data retransmitted for the first HARQ data; slots in the same position in the first HARQ data and the second HARQ data are combined according to the determined weight. Therefore, it is possible to flexibly adjust the weight value of the received HARQ data when combined, thereby improving the performance of the combined HARQ data; further reducing the number of times of retransmitting data, and improving decoding efficiency.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (14)

1. A method for hybrid automatic repeat request HARQ data merging, characterized in that the method comprises: Determine the weight of each slot according to the performance parameter value of each time slot slot in the first HARQ data and the second HARQ data, wherein the first HARQ data is HARQ data that cannot be decoded correctly, and the second HARQ data is for the second HARQ data. HARQ data for retransmission of HARQ data; The slots in the same position in the first HARQ data and the second HARQ data are combined according to the determined weight. 2. The method according to claim 1, wherein the method for determining the weight of the slot comprises: dividing the slots in the first HARQ data and the second HARQ data into multiple groups, wherein the slots in each group have the same position in the HARQ data; Divide the performance parameter value of the slot by the sum of the performance parameter values of all slots in the group where the slot belongs, and the obtained value is used as the weight of the slot. 3. The method according to claim 1 or 2, wherein the performance parameter value is one of a carrier-to-interference-noise ratio CINR value, a correct bit rate value and a useful power value. 4. The method according to claim 3, wherein the performance parameter value is a CINR value, and the first HARQ data is the HARQ data sent for the first time, before the weight of each slot is determined It also includes determining the CINR value of each slot in the first HARQ data according to the following formula: C _m =P _sm /P _nm ; Wherein said C _m is the CINR value of the m slot in the first HARQ data, P _sm is the useful power sum of the multiple carriers of the m slot, and P _nm is the useless power sum of the multiple carriers of the m slot , m is a natural number; The performance parameter value is a CINR value, and the first HARQ data is combined HARQ data, and before determining the weight of each slot, it also includes determining the CINR value of each slot in the first HARQ data according to the following formula : C=(C _i N+C _j )/(N+1); Among them, N is the number of mergers, C is the CINR value of the mth slot after the merger, C _i is the CINR value of the mth slot of the first HARQ data, and C _j is the CINR of the mth slot in the second HARQ data value, m is a natural number. 5. The method according to claim 4, wherein, before the weight of each slot is determined, the CINR value of each slot in the second HARQ data is determined according to the following formula: C _m =P _sm /P _nm ; Wherein said C _m is the CINR value of the m slot in the first HARQ data, P _sm is the useful power sum of the multiple carriers of the m slot, and P _nm is the useless power sum of the multiple carriers of the m slot , m is a natural number. 6. The method according to claim 1, 2, 4 or 5, further comprising: Determine the soft information value of each slot after merging. 7. The method according to claim 6, characterized in that, determine the soft information value of each slot after merging according to the following formula: V=(V _i W _i N+V _j W _j )/(N+1); Among them, N is the number of times of merging, V is the soft information value of the m-th slot after merging, V _i is the soft information value of the m-th slot in the first HARQ data, and W _i is the corresponding value of the m-th slot in the first HARQ data V _j is the soft information value of the m-th slot in the second HARQ data, W _j is the weight corresponding to the m-th slot in the second HARQ data, and m is a natural number. 8. A device for combining automatic repeat request HARQ data, characterized in that the device comprises: The determination module is used to determine the weight value of each slot according to the performance parameter value of each slot in the first HARQ data and the second HARQ data, wherein the first HARQ data is HARQ data that cannot be decoded correctly, and the second HARQ data is the HARQ data retransmitted for the first HARQ data; The merging module combines the slots in the same position in the first HARQ data and the second HARQ data according to the determined weight. 9. The device according to claim 8, wherein the determining module is specifically configured to: The slots in the first HARQ data and the second HARQ data are divided into multiple groups, wherein the slots in each group have the same position in the HARQ data, and the performance parameter value of the slot is divided by the performance parameter values of all slots in the group where the slot is located The sum of , the obtained value is used as the weight of the slot. 10. The device according to claim 8 or 9, wherein the performance parameter value is one of a carrier-to-interference-noise ratio (CINR), a correct bit rate, and a useful power value. 11. The device according to claim 10, wherein the performance parameter value is a CINR value, and the first HARQ data is the HARQ data sent for the first time, and the determining module determines the first HARQ data according to the following formula CINR value of each slot in HARQ data: C _m =P _sm /P _nm ; Wherein, C _m is the CINR value of the m-th slot in the first HARQ data, P _sm is the useful power sum of multiple carriers of the m-th slot, and P _nm is the sum of useless power of multiple carriers of the m-th slot, m is a natural number; The performance parameter value is a CINR value, and the first HARQ data is combined HARQ data, and the determination module determines the CINR value of each slot in the first HARQ data according to the following formula: C=(C _i N+C _j )/(N+1); Among them, N is the number of mergers, C is the CINR value of the mth slot after the merger, C _i is the CINR value of the mth slot of the first HARQ data, and C _j is the CINR of the mth slot in the second HARQ data value, m is a natural number. 12. The device according to claim 11, wherein the determining module determines the CINR value of each slot in the second HARQ data according to the following formula: C _m =P _sm /P _nm ; Wherein, C _m is the CINR value of the m-th slot in the first HARQ data, P _sm is the useful power sum of multiple carriers of the m-th slot, and P _nm is the sum of useless power of multiple carriers of the m-th slot, m is a natural number. 13. The device of claim 8, 9, 11 or 12, further comprising: A calculation module, configured to determine the combined soft information value of each slot. 14. The device according to claim 13, wherein the calculation module determines the soft information value of each slot after merging according to the following formula: V=(V _i W _i N+V _j W _j )/(N+1); Among them, N is the number of times of merging, V is the soft information value of the m-th slot after merging, V _i is the soft information value of the m-th slot in the first HARQ data, and W _i is the corresponding value of the m-th slot in the first HARQ data V _j is the soft information value of the m-th slot in the second HARQ data, W _j is the weight corresponding to the m-th slot in the second HARQ data, and m is a natural number.

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