CN115694766A

CN115694766A - Method, device and equipment for enhancing self-adaptive data transmission

Info

Publication number: CN115694766A
Application number: CN202211314264.5A
Authority: CN
Inventors: 李丽仙; 刘亿亮; 黄辉; 胡磊; 方小倩
Original assignee: China Star Network Application Co Ltd
Current assignee: China Star Network Application Co Ltd
Priority date: 2022-10-25
Filing date: 2022-10-25
Publication date: 2023-02-03

Abstract

The application provides a method, a device and equipment for enhancing self-adaptive data transmission, wherein the method comprises the following steps: acquiring information to be coded, and judging whether a code rate up-cut or down-cut condition is met or not when ACK feedback is received; when the condition of cutting the code rate is satisfied and the mother code does not need to be switched, the mother code selected by the last coding is used for coding the current information to be coded, and a punching check sequence with a code rate higher than the last compatible code rate is used for updating the check sequence obtained after the coding and then sending the check sequence; when determining that the code rate cut-off condition is met and the mother code does not need to be switched, encoding the current information to be encoded by using the mother code selected by the last encoding, updating the check sequence obtained after encoding by using the punching check sequence with the compatible code rate lower than the last time, and sending the updated check sequence; by using the method provided by the application, in the data transmission process, the calculation and storage expenses are reduced, and meanwhile, the self-adaptive adjustment of the transmission performance under the complex and changeable channel condition is realized.

Description

Method, device and equipment for enhancing self-adaptive data transmission

Technical Field

The present application relates to the field of wireless communications, and in particular, to a method, an apparatus, and a device for enhancing adaptive data transmission.

Background

In the related art, an Adaptive data transmission Scheme mainly selects an appropriate Modulation and Coding Scheme (MCS) by feeding back Channel State Information (CSI) based on an Adaptive Modulation and Coding (AMC) technique, and adjusts a Modulation and Coding Scheme (MCS) to control a transmission rate of Information by using a lookup table, so as to ensure that a system can effectively transmit Information.

In practical applications, under complicated and variable channel conditions, corresponding error correcting codes cannot be designed for various channel conditions to meet different requirements, and storage and calculation of a plurality of different codecs cannot be completed by using a large amount of software and hardware resources. That is, it is not practical to construct a huge MCS lookup table to meet different application requirements; in addition, in the existing mechanism, the code type is switched depending on a preset MCS correlation table, and the transition band of switching different codes is difficult to be clear (switching interval), so that the performance is fluctuated in a step manner under the condition of channel mutation.

Disclosure of Invention

The application provides a method, a device and equipment for enhancing adaptive data transmission, which are used for reducing calculation and storage expenses in the data transmission process and simultaneously realizing adaptive adjustment of transmission performance under complex and variable channel conditions.

In a first aspect, the present application provides a method for enhancing adaptive data transmission, applied to a coding end, including:

acquiring information to be coded, and judging whether a code rate up-cut or down-cut condition is met or not when ACK feedback is received;

when determining that the code rate cut-off condition is met and the mother code does not need to be switched, encoding the current information to be encoded by using the mother code selected by the last encoding, updating the check sequence obtained after encoding by using the punching check sequence with the compatible code rate higher than the last time, and sending the updated check sequence;

when determining that the code rate cut-off condition is met and the mother code does not need to be switched, encoding the current information to be encoded by using the mother code selected by the last encoding, updating the check sequence obtained after encoding by using the punching check sequence with the compatible code rate lower than the last time, and sending the updated check sequence;

the mother code is a sequence code in an MCS table, different punching check sequences are used for indicating punching positions of the check sequence obtained after the mother code is used for coding, and the more punching positions, the higher the compatible code rate corresponding to the punching check sequence is.

In one or more embodiments, when it is determined that a code rate cut-off condition is satisfied and a mother code does not need to be switched, encoding current information to be encoded by using the mother code selected by the last encoding, and updating a check sequence obtained after encoding by using a puncturing check sequence with a code rate higher than the last time includes:

determining different punching check sequences corresponding to the mother code when the condition of cutting the code rate is met and the mother code does not need to be switched;

and updating the coded check sequence by using the punching check sequence which is higher than the punching check sequence used last time by one level and has compatible code rate.

In one or more embodiments, when it is determined that a code rate down-cut condition is satisfied and a mother code does not need to be switched, encoding current information to be encoded by using the mother code selected by last encoding, and updating a check sequence obtained after encoding by using a puncturing check sequence with a code rate lower than the last time includes:

determining different punching check sequences corresponding to a mother code when the condition of code rate down-cut is met and the mother code does not need to be switched;

and updating the check sequence obtained after encoding by using the punching check sequence with the lowest compatible code rate.

In one or more embodiments, the method further comprises:

when the condition of code rate cutting is met and the mother code needs to be switched is determined, the mother code with a code rate higher than that of the mother code selected by the last coding is used for coding the current information to be coded and then sending the coded information;

when the condition of code rate cut-off is met and the mother code needs to be switched is determined, the current information to be coded is coded and sent by using the mother code with the code rate lower than that of the mother code selected by last coding and the punching check sequence corresponding to the highest first-level compatible code rate of the low-code-rate mother code.

In one or more embodiments, determining that a rate cut condition is satisfied and a mother code needs to be switched comprises:

and determining that the up-cut condition is met according to the current error correction rate, and when the last used punching check sequence is the punching check sequence with the highest compatible code rate corresponding to the mother code, determining that the mother code needs to be switched.

In one or more embodiments, determining that a code rate down-cut condition is satisfied and a mother code needs to be switched comprises:

and determining that the down-cut condition is met according to the current error correction rate, and when the last used punching check sequence is the punching check sequence with the lowest compatible code rate corresponding to the mother code, determining that the mother code needs to be switched.

In one or more embodiments, the method further comprises:

when the code rate up-cut condition and the code rate down-cut condition are determined not to be met, encoding the current information to be encoded by using the mother code selected by the last encoding;

and when the last coding does not select to use the punching check sequence, transmitting the information obtained after the coding, otherwise, updating the check sequence obtained after the coding by using the punching check sequence selected to use the last coding and transmitting the check sequence.

In one or more embodiments, the method further comprises:

when the Negative Acknowledgement (NACK) feedback is determined to be received and the mother code does not need to be switched, retransmitting the corresponding information bit according to the information bit identifier to be retransmitted and the cached information after the last coding;

or when the negative acknowledgement NACK feedback is determined to be received and the mother code does not need to be switched, according to the fed back information bit identifier to be retransmitted, the punching check sequence different from the last time is determined to be utilized, the check sequence obtained after the mother code is utilized for coding the last time is updated again, and then the check sequence is sent.

In one or more embodiments, the method further comprises:

and when the Negative Acknowledgement (NACK) feedback is determined to be received and the mother code needs to be switched, encoding the current information to be encoded by using the mother code with a code rate lower than that of the mother code selected by the last encoding and then transmitting the encoded information.

In a second aspect, the present application provides a method for enhancing adaptive data transmission, applied to a decoding end, including:

acquiring information to be decoded, and decoding the information to be decoded by using a mother code selected last time and a punching check sequence with a compatible code rate higher than the last time according to a first indication of an encoding end;

or, according to a second indication of the encoding end, decoding the information to be decoded by using the last selected mother code and the punching check sequence with a compatible code rate lower than the last time;

determining to feed back ACK information when the decoding is successful, and otherwise, feeding back NACK information;

the mother code is a sequence code in an MCS table, different punching check sequences are used for indicating punching positions of check sequences obtained after the mother code is used for coding, and the more punching positions, the higher the compatible code rate corresponding to the punching check sequences is;

the first indication is that the code rate is determined to be up cut and the mother code does not need to be switched; the second indication determines code rate down-cut and does not require switching mother codes.

In one or more embodiments, decoding the information to be decoded by using the last selected mother code and the punctured check sequence with a higher compatible code rate than the last time includes:

determining different punching check sequences corresponding to the mother code;

and decoding the information to be decoded by using the punching check sequence which is higher than the punching check sequence used last time by one level and has compatible code rate.

In one or more embodiments, decoding the information to be decoded by using the last selected mother code and the puncture check sequence with a compatible code rate lower than the last time includes:

and decoding the information to be decoded by using the punching check sequence with the lowest compatible code rate.

In one or more embodiments, the method further comprises:

determining an upper cutting mother code, and decoding the information to be decoded by using a mother code with a code rate higher than that of the mother code selected by last encoding;

and determining an undercut mother code, and decoding the information to be decoded by using the mother code with a lower code rate than the mother code selected by the last encoding and the punching check sequence with the highest compatible code rate corresponding to the mother code with the low code rate.

In one or more embodiments, the method further comprises:

and determining that the mother code and the current corresponding compatible code are not switched, and decoding the information to be decoded by using the mother code selected by the last coding and the punching check sequence corresponding to the current compatible code.

In one or more embodiments, feeding back NACK information includes:

determining the confidence coefficient of each information bit according to each decoded information bit soft information sequence;

determining a confidence threshold according to the transmission code rate and the signal-to-noise ratio of the information to be decoded, determining an identifier of an information bit with the confidence lower than the confidence threshold, and feeding back the identifier of the information bit to be retransmitted to an encoding end;

or, determining the number R of information bits according to the length and the transmission rate of the information to be decoded, selecting the information bits corresponding to the first R confidence degrees according to the sequence of the confidence degrees from small to large, and feeding back the identifier of the selected information bit as the identifier of the information bit to be retransmitted to the encoding end.

In one or more embodiments, the method further comprises:

after a NACK signal is fed back, receiving a retransmitted information bit, updating the initial probability information of the retransmitted information bit of the information to be decoded to a maximum value, and decoding again;

or, receiving the retransmitted puncturing check sequence, updating the initial probability information of the puncturing position of the sequence in the information to be decoded to 0, and decoding again.

In a third aspect, the present application provides an apparatus for enhancing adaptive data transmission, where the apparatus, as an encoding side, includes:

the code rate switching judgment module is used for acquiring the information to be coded and judging whether the code rate cut-up or cut-down condition is met or not when the Acknowledgement (ACK) feedback is received;

the code rate up-cutting module is used for encoding the current information to be encoded by using the mother code selected by the last encoding when the condition of up-cutting the code rate is met and the mother code does not need to be switched, updating the check sequence obtained after encoding by using the punching check sequence with the compatible code rate higher than the last time, and then sending the check sequence;

the code rate undercutting module is used for encoding the current information to be encoded by using the mother code selected by the last encoding when the code rate undercutting condition is met and the mother code does not need to be switched, updating the check sequence obtained after encoding by using the punching check sequence with the compatible code rate lower than the last time, and then sending the check sequence;

In a fourth aspect, the present application provides an apparatus for enhancing adaptive data transmission, which serves as a decoding side, and includes:

the first decoding module is used for acquiring information to be decoded, and decoding the information to be decoded by utilizing a mother code selected last time and a punching check sequence with a compatible code rate higher than the last time when a first instruction of an encoding end is received;

the second decoding module is used for decoding the information to be decoded by utilizing the last selected mother code and the punching check sequence with the compatible code rate lower than the last time according to a second instruction of the coding end;

the decoding feedback module is used for feeding back ACK information when the decoding is successful, and otherwise, feeding back NACK information;

the mother code is a sequence code in an MCS table, different punching check sequences are used for indicating punching positions of check sequences obtained after the mother code is used for coding, and the more punching positions, the higher the compatible code rate corresponding to the punching check sequences is; the first indication is that the code rate is determined to be up cut and the mother code does not need to be switched; the second indication determines code rate down-cutting and does not require switching mother codes.

In a fifth aspect, the present application provides an apparatus for enhanced adaptive data transmission, the apparatus comprising at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method for enhanced adaptive data transmission performed by the encoding side or the method for enhanced adaptive data transmission performed by the decoding side.

In a sixth aspect, an embodiment of the present application provides a computer storage medium storing a computer program for causing a computer to execute the method for enhanced adaptive data transmission performed by the encoding side or the method for enhanced adaptive data transmission performed by the decoding side.

The method, the device and the equipment for enhancing the self-adaptive data transmission have the following beneficial effects:

in the data transmission process, the calculation and storage expenses are reduced, and meanwhile, the self-adaptive adjustment of the transmission performance is stably realized under the complex and changeable channel conditions.

Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a block diagram of a basic principle of AMC technology according to an embodiment of the present application;

FIG. 2 is a block diagram of a process applied to an embodiment of the present application for enhancing adaptive data transmission at a coder;

FIG. 3 is a block diagram of a process applied to an embodiment of the present application for enhancing adaptive data transmission at a coder;

fig. 4 is a block diagram of a process flow of receiving NACK feedback by a coding end according to an embodiment of the present application;

fig. 5 is a block diagram of a flow of adaptive adjustment of a double-layer code rate according to an embodiment of the present application;

fig. 6 is a block diagram of a flow of adaptive coding switching for dual-layer control according to an embodiment of the present application;

FIG. 7 is a block diagram of a process applied to a decoding side for enhancing adaptive data transmission according to an embodiment of the present application;

FIG. 8 is a block diagram of a process applied to a decoding side for enhancing adaptive data transmission according to an embodiment of the present application;

fig. 9 is a block diagram of a decoding-end NACK feedback process provided in an embodiment of the present application;

fig. 10 is a block diagram of a compatible intra-code adaptive data transmission flow provided in an embodiment of the present application;

fig. 11 is a block diagram of a compatible inter-code adaptive data transmission flow provided in an embodiment of the present application;

FIG. 12 is a diagram of an apparatus at a coding end for enhanced adaptive data transmission according to an embodiment of the present application;

FIG. 13 is a diagram of a decoding side device for enhanced adaptive data transmission in accordance with an embodiment of the present application;

fig. 14 is a diagram of an apparatus for enhancing adaptive data transmission according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

A basic architecture of an AMC system in the related art is shown in fig. 1, and mainly includes a coding end and a decoding end, where an encoder obtains data to be transmitted, selects a corresponding MCS code from an MCS table based on an MCS selection policy to encode, transmits the encoded data to a modulator to perform signal modulation, transmits the encoded data through a transmitting module after completing the signal modulation, and transmits the transmitted data to a receiving module of the decoding end through a channel; and after channel estimation, the signal is demodulated through a demodulator, the MCS adopted in the decoding is determined from the MCS table, and the signal is decoded according to the determined MCS and then output by a decoder.

The MCS switching policy may perform MCS switching according to an MCS switching threshold, and the criteria for setting the MCS switching threshold mainly include a transmission rate maximization criterion, an error rate minimization criterion, and a transmission power minimization criterion. The maximum transmission rate criterion is that data is transmitted at the speed as fast as possible under the condition of ensuring acceptable error codes, namely, a high-order coding modulation mode is adopted; the minimum criterion of the error rate is to ensure that the transmission rate and the transmitting power of code elements are unchanged, and adjust MCS to reduce the error rate of a receiving end as much as possible; the minimum transmitting power is to minimize the transmitting power as much as possible on the premise of ensuring the system performance. Generally, the balance of the three aspects needs to be chosen according to different application requirements.

In practical applications, under complicated and variable channel conditions, it is impossible to design corresponding error correction codes for various channel conditions to meet different requirements, and it is also impossible to bear the problem that a large amount of software and hardware resources are used to complete the storage and calculation of a plurality of different codecs. That is, it is not practical to construct a huge MCS lookup table to meet different application requirements; in addition, in the existing mechanism, the code type is switched depending on a preset MCS correlation table, and the transition band of switching different codes is difficult to be clear (switching interval), so that the performance fluctuates in a step manner under the condition of channel mutation.

In view of the above problems, the embodiments of the present application, on the basis of the AMC technology, combine the code rate compatible codes to fully utilize the decoding convergence characteristic of the error correcting code, and implement an adaptive data transmission scheme that is efficient, reliable, and conforms to the actual application scenario based on a qualitative feedback manner at the encoding end to solve the above problems.

For convenience of understanding, terms referred to in the embodiments of the present application are explained below:

(1) Checking a sequence: and generating a useful information sequence and a check sequence after MCS coding the information to be coded, wherein the check sequence is a redundant information part.

(2) The error correction rate is as follows: after the information to be coded is coded and transmitted, the accuracy of output decoding is embodied, and the higher the error correction rate is, the better the transmission performance is.

An embodiment of the present application provides a method for enhancing adaptive data transmission, which is applied to a coding end, and as shown in fig. 2, the method includes:

step S201, a coding end acquires information to be coded;

step S202, when determining that the acknowledgement ACK signal feedback is received currently, judging whether a code rate up-cut condition or a down-cut condition is met, if the code rate up-cut condition is met, executing step S203, and if the code rate down-cut condition is met, executing step S205;

the data stream transmitted by the coding end continuously generates new data along with the updating of the data stream, the coding end transmits according to a certain transmission rate, feedback information is received from the decoding end after each transmission to determine whether the transmission is successful, and after the decoding end feeds back an ACK signal, the coding end determines that the decoding end receives the information and successfully decodes the information.

According to the embodiment of the application, under the condition that the decoding end successfully receives the data, whether the code rate cut-up or cut-down condition is met is further judged.

Step S203, further judging whether the mother code needs to be switched when the code rate up-cut condition is met, if the mother code does not need to be switched, executing step S204;

the mother code is a sequence code in the MCS table, and the design of the MCS table can be designed according to the design in the related art, which is not described in detail herein. The MCS table comprises a plurality of sequence codes, different mother codes have different error correction capabilities for data transmission, and the mother codes corresponding to different error correction rate ranges can be set according to the error correction rate range.

In the present application, when transmitting initial data, a corresponding mother code is selected from the MCS table according to a requirement for an error correction rate of the transmitted data, and the initial data is encoded and transmitted.

Step S204, encoding the current information to be encoded by using the mother code selected by the last encoding, updating the check sequence obtained after encoding by using a punching check sequence with a higher compatible code rate than the last time, and then transmitting the check sequence;

as described above, after the data to be transmitted is encoded by using the mother codes, the obtained encoded information includes a useful information sequence and a redundant check sequence, in the embodiment of the present application, for the check sequence obtained after each mother code in the MCS is encoded, a puncturing check sequence is designed, where the puncturing check sequence is used to indicate a puncturing position of the check sequence obtained after encoding by using the mother code, that is, the data at the puncturing position is not sent any more, so that transmission of more data is supported, and a data transmission rate is changed. According to the method and the device, the information to be coded is coded according to the mother code, different punching check sequences are used for punching the check sequences, the information to be coded can be regarded as being coded by code rate compatible codes corresponding to the mother code, and due to the fact that the punching quantity of the different code rate compatible codes is different, the corresponding transmission rates (called compatible code rates in the embodiment of the application) are different, and self-adaptive adjustment of the transmission rates can be achieved.

The more punching positions indicated by the punching check sequence, the higher the corresponding compatible code rate, the lower the corresponding receiving end error correction rate, so that whether the up-cut condition or the down-cut condition is met can be judged according to the receiving end error correction rate, specifically, when the error correction rate is higher than the current required high threshold value of the error correction rate, the transmission rate can be further increased, the up-cut condition of the code rate is met, and when the error correction rate is lower than the current required low threshold value of the error correction rate, the transmission rate is decreased to increase the error correction rate, and the down-cut condition of the code rate is met.

Step S205, when the code rate down-cut condition is satisfied, further judging whether the mother code needs to be switched, if the mother code does not need to be switched, executing step S206;

and step S206, encoding the current information to be encoded by using the mother code selected by the last encoding, updating the check sequence obtained after encoding by using the punching check sequence with the compatible code rate lower than the last time, and then transmitting.

The embodiment of the application realizes code rate adjustment by judging code rate adjustment conditions, and not only relates to judgment on whether mother codes need to be switched or not when the code rates are cut up or down, but also relates to switching of compatible code rates when the mother codes do not need to be switched, so that code rate layered control is realized, wherein the switching of the mother codes is called outer layer control, and the switching of the code rate compatible codes is called inner layer control.

The hierarchical optimization idea combines AMC and code rate compatibility to improve the system performance and enhance the applicability and robustness of the existing AMC scheme. Based on the existing AMC scheme as the outer control technology, the inner control is carried out based on code rate compatibility to realize the enhanced self-adaptive data transmission. The inner control is the selective sending of the coded information under the outer control, the recoding is not needed, the information content comprises the check sequence updated by the punching check sequence and the coded block data information corresponding to the decoding convergence feedback identification, and the possibility of transmission under the worst channel is ensured.

In one or more embodiments, as shown in fig. 3, the method further comprises:

step S301, a coding end acquires information to be coded;

step S302, determining whether a code rate cut-up or cut-down condition is satisfied when the acknowledgement ACK signal feedback is currently received, if the code rate cut-up condition is satisfied, executing step S303, and if the code rate cut-down condition is satisfied, executing step S305; if the code rate up-cut or down-cut condition is not satisfied, executing step S307;

step S303, further judging whether the mother code needs to be switched when the code rate cut-off condition is met, and executing step S304 if the mother code needs to be switched;

when the error correction rate is higher than the currently required high threshold of the error correction rate, it is determined that the code rate cut condition is satisfied, and the transmission rate can be further improved.

Step S304, the current information to be coded is coded and sent by using the mother code with higher code rate than the mother code selected by the last coding;

as described above, after the data to be transmitted is encoded by using the mother code, the obtained encoded information includes a useful information sequence and a redundant check sequence, and in order to smoothly improve the transmission performance, the current information to be encoded is encoded by using a new mother code after the mother code is replaced, and the encoded information is directly transmitted without punching the check sequence of the obtained encoded information.

Step S305, further judging whether the mother code needs to be switched when the code rate down-cut condition is met, and executing step S306 if the mother code needs to be switched;

when the error correction rate is lower than the currently required low threshold of the error correction rate, a code rate cut-off condition is met, and it is considered that the transmission rate needs to be reduced to improve the error correction rate.

And step S306, encoding the current information to be encoded by using the mother code with a lower code rate than the mother code selected by the last encoding and the punching check sequence corresponding to the highest first-level compatible code rate of the low-code rate mother code, and then transmitting the encoded information.

As described above, after the data to be transmitted is encoded by using the mother code, the obtained encoded information includes a useful information sequence and a redundant check sequence, and in order to make the transmission rate smoothly decrease while the error correction rate meets the requirement, the current information to be encoded is encoded by using a new mother code after the mother code is replaced, and the check sequence of the obtained encoded information is transmitted after being punctured by using the punctured check sequence corresponding to the highest compatible code rate of the mother code after switching.

Step S307, encoding the current information to be encoded by using the mother code selected by the last encoding; and when the last coding does not select to use the punching check sequence, transmitting the information obtained after the coding, otherwise, updating the check sequence obtained after the coding by using the punching check sequence selected to use the last coding and transmitting the check sequence.

When the current error correction rate and the transmission rate both meet the requirements, the code rate is unchanged, and the current transmission performance is kept.

In one or more embodiments, as shown in fig. 4, the method further comprises:

step S401, a coding end obtains information to be coded;

step S402, when the negative acknowledgement NACK signal feedback is determined to be received currently, whether code rate down-cut is carried out is determined, if the code rate down-cut is determined to be carried out, step S403 is executed, otherwise, step S406 is executed;

and when the coding end receives the NACK and the information bit identifier to be retransmitted, determining that the decoding of the decoding end fails, and performing information transmission again in a mode of selecting an undercut code rate, or performing information transmission again in a mode of keeping the original code rate according to the feedback information.

Step S403, determining whether to switch mother codes when performing code rate down-cut, and executing step S404 if the mother codes do not need to be switched; if the mother code needs to be switched, executing step S405;

and if the last used punching check sequence is the punching check sequence with the lowest compatible code rate corresponding to the mother code and the code rate is cut down, determining that the mother code needs to be switched to the mother code with a lower code rate, and otherwise, determining that the mother code does not need to be replaced.

And S404, determining to use a punching check sequence different from the last time according to the fed back information bit identifier to be retransmitted, updating the check sequence obtained after the last time of coding by using the mother code, and then sending the check sequence.

The method comprises the steps of coding current information to be coded by using a mother code selected by last coding, updating a check sequence obtained after coding by using a punching check sequence with a lower compatible code rate than the last time, and sending the check sequence, wherein the punching check sequence with the lower compatible code rate is the punching check sequence with the minimum punching number corresponding to the current mother code, and directly cutting down to the lowest compatible code rate corresponding to the current mother code to ensure that the response can be fast when the error correction rate is lower than a low threshold value, so that the performance stability of data transmission under the worst channel condition is ensured.

Step S405, encoding the current information to be encoded by using the mother code with a code rate lower than that of the mother code selected by the last encoding and then transmitting the encoded information;

the mother code with the lower code rate is lower than the current mother code by one step, the punching check sequence used when the mother code with the lower code rate is switched to the mother code with the lower code rate is the punching check sequence with the largest punching quantity corresponding to the mother code with the lower code rate, and the transmission performance is stably transited due to the step-by-step switching of the code rates.

And step S406, retransmitting the corresponding information bit according to the information bit identifier to be retransmitted and the cached information after the last coding.

The information bit identification is the identification of the data to be retransmitted fed back by the decoding end, the coding end can retransmit all the bit data or part of the bit data according to the feedback information bit identification to be retransmitted, and the original code rate is adopted for feedback when retransmission is carried out. In order to save transmission overhead, the retransmitted information can be combined with other useful information to be fed back.

The above-mentioned receiving NACK feedback can have many processing modes, in one or more possible embodiments, on the basis of not changing the code rate, according to the information bit identifier to be retransmitted that is fed back, the corresponding information bit is retransmitted, that is, according to the cached information after the last encoding, the corresponding information bit is retransmitted, and the information bit specified based on the convergence of iterative decoding (bit statistical probability information after the iteration is completed) is directly fed back, so as to improve the decoding decision probability; and higher transmission accuracy is obtained under the condition of ensuring that the transmission rate is met.

The method for enhancing adaptive data transmission provided in the embodiment of the present application implements adaptive adjustment of double-layer code rates, as shown in fig. 5, in the overall scheme, in order to meet the requirements of variable channel environments and different communication indexes in application, the outer coarse-grained mother code switching is performed according to the current generalized Adaptive Modulation and Coding (AMC) mode, and details are not described here.

The outer coarse-grained mother code switching may be based on an existing mechanism, or may be further determined based on a code rate up-cut or down-cut condition defined in the present application, and in one or more possible embodiments, determining that a code rate up-cut condition is satisfied and a mother code needs to be switched includes: and determining that the up-cut condition is met according to the current error correction rate, and when the last used punching check sequence is the punching check sequence with the highest compatible code rate corresponding to the mother code, determining that the mother code needs to be switched.

In one or more possible embodiments, determining that a code rate down-cut condition is satisfied and a mother code needs to be switched includes:

And performing compatible code switching of inner layer fine granularity based on a code rate compatible selector, and combining channel state information and decoding convergence conditions to form a switching rule in the following two modes.

And performing compatible code rate up-cutting when the channel is good enough under the condition of not switching the mother code, switching the compatible code rates from low to high step by step, improving the code rate by reducing the check information, and ensuring that a higher transmission rate is obtained under the condition of meeting the bit error rate.

Cutting: the method can quickly respond, support one-step in-place, and directly switch to the lowest compatible code rate corresponding to the current mother code under the condition of not switching the mother code.

In the whole scheme, in order to meet the requirements of variable channel environments and different communication indexes in application, the number of mother codes and the corresponding compatible code rate are determined according to the actual application condition. In general, the number of compatible code rates corresponding to a high-code-rate mother code is properly increased relative to a low-code-rate mother code, so that the stable performance of the error code rate during down-cut is ensured as much as possible; and the mother code with low code rate is compatible with the moderately increased switching granularity among codes, so that the transmission rate can be quickly adjusted.

Based on the above description, fig. 6 shows a double-layer controlled adaptive coding switching diagram in the scheme, where switching and execution of an outer layer mother code are preferentially performed, and switching to an inner layer compatible code rate is performed only when the mother code is still switched in the same direction after being executed, for example, in the running process of a mother code 2, the mother code 1 is cut according to the channel state information, and then directly switched and run, and when the mother code is still cut but does not reach an upper layer mother code, the compatible code rate 1.3 is selected according to inner layer control, so as to perform step-by-step upward switching (1.3 → 1.2 → 1.1); if the down-cut is needed according to the control, the lowest compatible code rate of the current mother code is directly cut to 2.3, and the transmission reliability is ensured.

An embodiment of the present application provides a method for enhancing adaptive data transmission, which is applied to a decoding end, and as shown in fig. 7, the method includes:

step S701, information to be decoded is obtained;

step S702, if a first instruction according to the encoding end is received, executing step S703; if the second indication according to the encoding end is received, execute step S704;

the first indication is that the code rate is determined to be up cut and the mother code does not need to be switched; the second indication determines code rate down-cutting and does not require switching mother codes.

After the coding end performs coding transmission on information to be coded, the mother code used in coding and the corresponding punching check sequence are indicated to the decoding end through corresponding parameters, so that the decoding end can determine whether the decoding needs to perform code rate up-cutting or not according to the corresponding parameters, and whether the mother code needs to be replaced when the code rate up-cutting is performed, and if the mother code does not need to be replaced, the adopted punching check sequence can be determined according to the indication of the coding end.

Step S703, decoding the information to be decoded by using the last selected mother code and the punching check sequence with a compatible code rate higher than the last time; the decoding is successful and step S705 is executed, and the decoding is failed and step S706 is executed.

Step S704, decoding the information to be decoded by using the last selected mother code and the punching check sequence with the compatible code rate lower than the last time; the decoding is successful and step S705 is executed, and the decoding is failed and step S706 is executed.

And the decoding end receives the information to be decoded each time, decodes the information to be decoded according to the mother code used by the last encoding and the punching check sequence, and decodes the information to be decoded according to the mother code used by the last encoding if the last encoding does not use a code rate compatible code.

Step S705, feeding back ACK to the encoding end;

and after decoding, if the error correction rate meets the requirement, namely is higher than a high threshold value, indicating that the decoding is successful, sending the decoding information and feeding back an ACK signal to the encoding end.

Step S706, feeding back NACK and the information bit identifier to be retransmitted.

The error correction rate after decoding is lower than the low threshold, which indicates that the decoding information has more errors and the decoding fails. At the moment, determining the confidence coefficient of each information bit according to each decoded information bit soft information sequence; and determining a confidence threshold according to the transmission code rate and the signal-to-noise ratio of the information to be decoded, determining an identifier of an information bit with the confidence lower than the confidence threshold, identifying the information bit to be retransmitted, and feeding back the identifier to the encoding end.

The confidence is the magnitude of the absolute value of the soft information sequence (log-likelihood ratio information (LLR)) of each information bit output by decoding.

The confidence Threshold is determined by the transmission code rate and the signal-to-noise ratio of the information to be decoded, and can be determined by adopting the following port equation:

in the formula, rate' is the current compatible code Rate, and SNR is the signal-to-noise ratio of transmission.

The threshold is used for judging the confidence of each information bit in the decoding information after the iterative decoding is finished, a position mark (Pos) of the information bit lower than the threshold is used as an information feedback mark, and a NACK signal and the mark sequence (Pos) are fed back to a coding end when the decoding fails.

The threshold carries out qualitative constraint according to the probability statistical characteristics of each information bit under the channel in iterative decoding, reduces the caching cost, enhances the pertinence of the feedback mark, improves the decoding reliability, and changes according to different channel conditions (the SNR of the transmitted signal to noise ratio) in practical application.

Therefore, in practical application, the threshold can be set as a fixed static threshold according to the statistical value, and the calculation of the threshold is avoided.

The confidence-based information selection number R: the length and transmission rate of the information to be decoded are determined, and the following formula can be adopted for calculation:

R＝Len*(7/25-Rate‘/50)*step。

in the formula, rate' is the current compatible code Rate, len is the length of the coding block (corresponding to the mother code), step is the adaptive correction factor (suggested value is 1-1.5), and the conditions of bandwidth resource consumption, time delay and error correction performance can be actually adjusted.

And selecting information identifiers of information bits corresponding to the first R confidence coefficients from the confidence coefficients of all information bits in the decoded information after the iterative decoding is finished as information feedback identifiers according to the sequence from small to large, and feeding back NACK signals and the identifier sequence (Pos) to a coding end when the decoding fails.

The decoding end mainly has the functions of carrying out operations such as channel estimation, decoding and the like according to the received information, and the channel estimation feeds back channel state information to the encoding end for controlling the selection of the encoding modulation mode; for the decoding part, the coding end uses what coding mode, the decoding end will receive what indication, and then uses the decoding mode corresponding to the coding mode to decode.

And (4) directly decoding the successfully decoded data and outputting and feeding back ACK information to the encoding end, if the decoding does not pass, caching according to decoding confidence information, calculating optimal feedback information, and feeding back NACK and a required redundant information sequence.

Feedback data received for decoding failure:

(1) If the coding end punching check sequence is received, updating the initial probability information corresponding to the punching position in the information check sequence to be decoded to be 0 according to the corresponding code rate compatible code, and decoding again;

(2) And if the information bit at the position appointed by the coding confidence coefficient under the same code rate fed back by the coding end is received, updating the initial probability information of the retransmission information bit of the information to be coded to the maximum value and decoding again.

In one or more embodiments, as shown in fig. 8, the method further comprises:

step S801, acquiring information to be decoded;

step S802, if the received encoding end indication is that the upper cutting mother code is determined, step S803 is executed; if the received encoding end indication is to determine the down-cut mother code, executing step S804; if the coding end indication is received to determine not to switch the code rate, step S805 is executed.

Step S803, decoding the information to be decoded by using the mother code with a higher code rate than the mother code selected by the last encoding; the decoding is successful and step S806 is executed, and the decoding is failed and step S807 is executed.

Step S804, decoding the information to be decoded by using the mother code with lower code rate than the mother code selected by the last coding and the punching check sequence with the highest compatible code rate corresponding to the mother code with the lower code rate; the decoding is successfully performed in step S806, and the decoding is failed in step S807.

Step S805, decoding the information to be decoded by using the mother code selected by the last encoding and the punching check sequence corresponding to the current compatible code; the decoding is successfully performed in step S806, and the decoding is failed in step S807.

Step S806, feeding back ACK;

step S807, NACK and information bit identifier to be retransmitted are fed back.

In one or more embodiments, as shown in fig. 9, the feeding back NACK information, the method further includes:

step S901, acquiring information to be decoded, determining that decoding fails, and executing step S902;

step S902, determining the confidence of each information bit according to each decoded information bit soft information sequence, and executing step S903;

step S903, determining a confidence threshold, determining an identifier of an information bit with a confidence lower than the confidence threshold, taking the identifier of the information bit with the confidence lower than the confidence threshold as an identifier of an information bit to be retransmitted, and executing step S904.

Or, determining the number R of information bits, selecting the information bits corresponding to the first R confidence degrees according to the sequence of the confidence degrees from small to large, and taking the identifier of the selected information bit as the identifier of the information bit to be retransmitted; step S904 is performed.

Step S904, the information bit id to be retransmitted and the NACK signal are fed back to the encoding end, and step S905 is performed.

Step S905, judging the type of the received retransmission information;

receiving the information bit of the designated position based on the decoding confidence coefficient, and executing the step S906; upon receiving the puncture check sequence, step S907 is performed.

Step S906, updating the retransmission information bit initial probability information of the information to be decoded to the maximum value and decoding again; the decoding is successful and step S908 is executed, and the decoding is failed and step S902 is executed.

Step S907, updating the retransmission information bit initial probability information of the information to be decoded to a maximum value and decoding again. The decoding is successful and step S908 is executed, and the decoding is failed and step S902 is executed.

Step S908, feeds back an ACK signal.

In one or more possible embodiments, decoding the information to be decoded by using the last selected mother code and the punctured check sequence with a higher compatible code rate than the last time includes:

In one or more possible embodiments, decoding the information to be decoded by using the last selected mother code and the punctured check sequence with a lower compatible code rate than the last time includes:

The decoding end also adopts a mode of gradually increasing or cutting down to one step in place when the inner layer code rate is adjusted.

Fig. 10 is a schematic diagram of feedback after a decoding failure according to the embodiment of the present application, where an encoding end determines that switching of compatible code rates is not required according to information bit identifiers fed back, and performs intra-code adaptive transmission without compatible code switching under inner layer control, that is, the current code rate is kept unchanged, and information bits with retransmission confidence lower than a threshold are retransmitted. And the decoding end updates the initial probability information corresponding to the punching position in the information check sequence to be decoded to 0 according to the corresponding code rate compatible code, and decodes again.

The following provides implementation example steps of the method for enhancing adaptive data transmission in combination with the encoding side and the decoding side. The outer layer control belongs to coarse-grained AMC process, which is not described, and the given implementation example mainly aims at the adaptive strategy between code rate compatible codes based on mother codes. And in the range of the current mother code, the transmission process of two corresponding information feedback selection strategies is given: an intra-code adaptive transmission procedure without compatible code switching and a variable code rate transmission procedure with compatible inter-code switching under the control of the inner layer are specifically shown in fig. 11.

Step 1: and coding the information to be coded by the coding mode to obtain compatible code transmission coding block information and caching the compatible code transmission coding block information.

And 2, step: the signals transmitted by the coding end have error codes of different degrees through a noise channel.

And step 3: the decoding end receives the error signal to decode, if the decoding is successful, the decoding end sends ACK information to the encoding end to indicate that the receiving end completes correct decoding of the received information; if the decoding is not successful, the NACK and the confidence information mark are fed back.

And 4, step 4: and the encoding end performs new coding and decoding processing according to the receiving end feedback (ACK/NACK): and executing new coding or information feedback selection according to a double-layer self-adaptive controller (an outer AMC compatible controller and an inner code rate compatible controller), and sending an information sequence selected by information feedback to a decoding end.

And 5: and updating the decoding information after receiving the information fed back by the encoding end, and decoding again. And repeating the steps until the decoding is successful or the maximum retransmission times of the system constraint is reached.

The outer AMC handover in step 4 described above belongs to a coarse-grained AMC procedure, and is not described in detail. The switching of the coding mode is performed according to the switching strategy described above. Under the control of an inner layer, the method can be divided into intra-code adaptive transmission without compatible code switching and adaptive transmission with compatible code rate. If there is no compatible code rate switching, when the feedback decoding in step 4 fails, then: a. performing Threshold judgment on soft information output by iterative decoding, caching the soft information smaller than the Threshold and calculating confidence characteristics; b. and selecting the quantity and content of the retransmitted information according to the system requirements, and taking the position Pos corresponding to the selected information sequence as an indication of the feedback information of the encoding end. c. And feeding back the calculated retransmission identifier Pos and NACK to the encoding end together, and referring to fig. 11 for a flow chart.

Updating the decoding information in step 5: and updating the soft information sequence LLR corresponding to the bit fed back by the encoding end to the maximum value (set to 10) and decoding again.

If the compatible code rates (including successful decoding and unsuccessful decoding) need to be switched, the coding information corresponding to the corresponding compatible codes is selected to be sent according to a code rate switching strategy, and when the decoding information is updated in the step 5, the soft information sequence LLR corresponding to the punching position in the coding information selected and sent by the coding end is updated to be 0 according to the punching rules of the compatible codes, and the decoding is carried out.

Based on the same inventive concept, the present application further provides an apparatus for enhancing adaptive data transmission, which serves as a coding end, as shown in fig. 12, and includes:

a code rate switching judgment module 1201, configured to acquire information to be encoded, and determine whether a code rate up-cut or down-cut condition is met when receiving an acknowledgement ACK feedback;

a code rate up-cut module 1202, configured to, when it is determined that a code rate up-cut condition is satisfied and a mother code does not need to be switched, encode current information to be encoded using the mother code selected by the previous encoding, update a check sequence obtained after encoding using a puncturing check sequence with a higher compatible code rate than the previous time, and send the updated check sequence;

a code rate undercutting module 1203, configured to, when it is determined that a code rate undercutting condition is met and mother codes do not need to be switched, encode current information to be encoded by using the mother code selected by previous encoding, update a check sequence obtained after encoding by using a punching check sequence with a lower compatible code rate than the previous time, and send the check sequence;

In one or more possible embodiments, when the code rate cut-up module determines that the code rate cut-up condition is satisfied and the mother code does not need to be switched, the mother code selected by the previous encoding is used to encode the current information to be encoded, and the check sequence obtained after encoding is updated by using the puncturing check sequence with a code rate higher than the previous time, including:

updating the check sequence obtained after coding by using the punching check sequence which is higher than the punching check sequence used last time by one level and has compatible code rate;

in one or more possible embodiments, when the code rate down-cut module determines that the code rate down-cut condition is satisfied and the mother code does not need to be switched, the mother code selected by the last encoding is used to encode the current information to be encoded, and the check sequence obtained after encoding is updated by using the puncturing check sequence with a lower code rate than the last time, including:

determining different punching check sequences corresponding to the mother codes when the conditions of code rate down-cutting are met and the mother codes do not need to be switched;

In one or more possible embodiments, the code rate cut-up module is further configured to, when it is determined that a code rate cut-up condition is satisfied and a mother code needs to be switched, encode and transmit current information to be encoded by using a mother code with a higher code rate than the mother code selected by last encoding;

and the code rate undercutting module is also used for encoding and sending the current information to be encoded by using the mother code with a lower code rate than the mother code selected by the last encoding and the punching check sequence corresponding to the highest compatible code rate of the low-code-rate mother code when the code rate undercutting condition is met and the mother code needs to be switched.

In one or more possible embodiments, the determining that the code rate cut condition is satisfied and the mother code needs to be switched by the code rate switching determining module includes:

In one or more possible embodiments, the determining that the code rate down-cut condition is satisfied and the mother code needs to be switched by the code rate switching determining module includes:

and determining that the mother code needs to be switched when the current error correction rate is determined to meet the undercut condition and the last used punching check sequence is the punching check sequence with the lowest compatible code rate corresponding to the mother code.

In one or more possible embodiments, the method further comprises:

a code rate keeping module 1204, configured to encode the current information to be encoded by using a mother code selected by last encoding when it is determined that the code rate cut-up condition and the cut-down condition are not satisfied; and when the last coding does not select to use the punching check sequence, transmitting the information obtained after the coding, otherwise, updating the check sequence obtained after the coding by using the punching check sequence selected to use the last coding and transmitting the check sequence.

In one or more possible embodiments, further comprising:

the first data retransmission module is used for retransmitting the corresponding information bit according to the cached information coded last time according to the fed back information bit identifier to be retransmitted when the Negative Acknowledgement (NACK) feedback is received and the mother code does not need to be switched;

or when the negative acknowledgement NACK feedback is determined to be received and the mother code does not need to be switched, according to the fed back information bit identifier to be retransmitted, the check sequence which is obtained after the last mother code encoding is updated again and then is sent.

In one or more possible embodiments, the method further comprises: and the second data retransmission module is used for coding the current information to be coded by using the mother code with a code rate lower than that of the mother code selected by the last coding and then sending the coded information when the Negative Acknowledgement (NACK) feedback is determined to be received and the mother code needs to be switched.

An apparatus for enhancing adaptive data transmission, which is used as a decoding end and shown in fig. 13, comprises:

a first decoding module 1301, configured to obtain information to be decoded, and when receiving a first instruction from an encoding end, decode the information to be decoded by using a last selected mother code and a puncturing check sequence with a higher compatible code rate than a last time;

a second decoding module 1302, configured to obtain information to be coded, and when a second instruction of the coding end is received, decode the information to be coded by using a last selected mother code and a puncturing check sequence with a lower compatible code rate than a last time;

a decoding feedback module 1304, configured to determine that ACK information is fed back when decoding is successful, and otherwise, feed back NACK information;

the mother code is a sequence code in an MCS table, different punching check sequences are used for indicating punching positions of check sequences obtained after the mother code is used for coding, and the compatible code rate corresponding to the punching check sequences with more punching positions is higher; the first indication is that the code rate is determined to be up cut and the mother code does not need to be switched; the second indication determines code rate down-cutting and does not require switching mother codes.

In one or more possible embodiments, the first decoding module 1301 decodes the information to be decoded by using the last selected mother code and the punctured check sequence with a higher compatible code rate than the last time, including:

In one or more possible embodiments, the second decoding module 1302 decodes the information to be decoded by using the last selected mother code and the punctured check sequence with a lower compatible code rate than the last time, including:

In one or more possible embodiments, the first decoding module 1301 is further configured to determine an upper mother code, and decode the information to be decoded by using a mother code with a higher code rate than the mother code selected by the last encoding.

The second decoding module 1302 is further configured to determine a lower-cut mother code, and decode the information to be decoded by using a mother code with a lower code rate than the mother code selected by last encoding and a punch check sequence with the highest compatible code rate corresponding to the mother code with the low code rate.

In one or more possible embodiments, further comprising:

and a decoding holding module 1303, configured to determine that the mother code and the compatible code corresponding to the current mother code are not switched, and decode the information to be decoded by using the mother code selected in the last encoding and the punch check sequence corresponding to the current compatible code.

In one or more possible embodiments, the decoding feedback module 1304 determines to feed back ACK information when decoding is successful, and feeds back NACK information otherwise, including:

when the decoding is successful, the ACK is directly fed back;

after the decoding fails, determining the confidence coefficient of each information bit according to each decoded information bit soft information sequence;

or, determining the number R of information bits according to the length and the transmission rate of the information to be decoded, selecting the information bits corresponding to the first R confidence degrees according to the sequence of the confidence degrees from small to large, and feeding back the identifier of the selected information bit as the identifier of the information bit to be retransmitted to the encoding end;

in one or more possible embodiments, the decoding feedback module 1304 is further configured to receive a retransmitted information bit after feeding back a NACK signal, update the initial probability information of the retransmitted information bit of the information to be decoded to a maximum value, and decode the information again;

Based on the same inventive concept, the present application also provides an apparatus 1400 for enhanced adaptive data transmission, as shown in fig. 14, comprising at least one processor 1402; and memory 1401 communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method for enhanced adaptive data transmission at the encoding end or the method for enhanced adaptive data transmission at the decoding end.

The memory 1401 is used to store programs. In particular, the program may include program code comprising computer operating instructions. The memory 1401 may be a volatile memory (volatile memory), such as a random-access memory (RAM); or may be a non-volatile memory (non-volatile memory), such as a flash memory (flash memory), a hard disk (hard disk drive, HDD for short) or a solid-state drive (SSD for short); combinations of any of the above, or any of the above, may also be used.

The processor 1402 may be a Central Processing Unit (CPU), a Network Processor (NP), or a combination of a CPU and an NP. But also a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a Programmable Logic Device (PLD), or a combination thereof. The PLD may be a Complex Programmable Logic Device (CPLD), a field-programmable gate array (FPGA), a General Array Logic (GAL), or any combination thereof.

Based on the same inventive concept, the present embodiment also provides a computer storage medium storing a computer program for causing a computer to execute the method for enhanced adaptive data transmission at the encoding end or the method for enhanced adaptive data transmission at the decoding end.

The storage medium may be a non-transitory computer readable storage medium, for example, which may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

The disclosed embodiments also provide a computer program product, which, when run on an electronic device, causes the electronic device to execute any one of the above-mentioned methods for enhanced adaptive data transmission or any one of the methods for enhanced adaptive data transmission that may be involved in implementing an embodiment of the present disclosure.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is merely a logical division, and in actual implementation, there may be other divisions, for example, multiple modules or components may be combined or integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.

The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.

In addition, functional modules in the embodiments of the present application may be integrated into one processing module, or each of the modules may exist alone physically, or two or more modules are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a separate product, may be stored in a computer-readable storage medium.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product.

The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that a computer can store or a data storage device, such as a server, a data center, etc., that includes one or more available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), among others.

The technical solutions provided by the present application are introduced in detail, and the principles and embodiments of the present application are explained by applying specific examples in the present application, and the descriptions of the above examples are only used to help understanding the method and the core ideas of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application 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, and so forth) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the application. It should be appreciated by those skilled in the art that the embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may employ a computer usable storage medium having computer usable program code embodied in one or more media (implementing each flow and/or block in the flowchart and/or block diagram, and combinations of flows and/or blocks in the flowchart and/or block diagram).

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A method for enhancing adaptive data transmission, applied to a coding end, comprising:

when the condition of code rate cut-off is met and mother codes do not need to be switched is determined, the mother codes selected by the last coding are used for coding the current information to be coded, and a punching check sequence with a compatible code rate lower than the last time is used for updating the check sequence obtained after coding and then sending the check sequence;

2. The method of claim 1, wherein when it is determined that a code rate cut condition is satisfied and a mother code does not need to be switched, encoding current information to be encoded by using the mother code selected by the previous encoding, and updating a check sequence obtained after encoding by using a punctured check sequence with a higher code rate than the previous time comprises:

3. The method of claim 1, wherein when it is determined that a code rate cut-off condition is satisfied and a mother code does not need to be switched, encoding current information to be encoded by using the mother code selected by the previous encoding, and updating a check sequence obtained after encoding by using a punctured check sequence with a lower code rate than the previous time comprises:

4. The method of claim 1, further comprising:

and when the condition of code rate cut-off is met and the mother code needs to be switched is determined, encoding the current information to be encoded by using the mother code with a lower code rate than the mother code selected by the last encoding and the punching check sequence corresponding to the highest first-level compatible code rate of the low-code-rate mother code, and then transmitting the encoded information.

5. The method of claim 4, wherein determining that a code rate cut condition is satisfied and a mother code needs to be switched comprises:

6. The method of claim 4, wherein determining that a code rate down-cut condition is satisfied and a mother code needs to be switched comprises:

7. The method of claim 1, further comprising:

when the condition that the code rate cut-up condition and the cut-down condition are not met is determined, the current information to be coded is coded by using the mother code selected by the last coding;

8. The method of claim 1, further comprising:

when the negative acknowledgement NACK feedback is determined to be received and the mother code does not need to be switched, retransmitting the corresponding information bit according to the information bit identifier to be retransmitted and the cached information after the last coding;

or when the negative acknowledgement NACK feedback is determined to be received and the mother code does not need to be switched, according to the fed back information bit identifier to be retransmitted, the punching check sequence different from the last time is determined to be utilized, the check sequence obtained after the last time of mother code encoding is updated again is sent;

the information bit identification to be retransmitted is an identification of an information bit with confidence lower than a confidence threshold in the encoded information, or an identification of the first R information bits of the encoded information determined according to the sequence from small confidence to large confidence, the confidence threshold is determined according to the transmission code rate and the signal-to-noise ratio of the encoded information, and the quantity R is determined according to the length and the transmission rate of the encoded information.

9. The method of claim 8, wherein the received NACK feedback further comprises:

and when the negative acknowledgement NACK feedback is determined to be received and the mother code needs to be switched, encoding the current information to be encoded by using the mother code with a code rate lower than the mother code selected by the last encoding and then transmitting the encoded information.

10. A method for enhancing adaptive data transmission, applied to a decoding end, comprising:

acquiring information to be decoded, and decoding the information to be decoded by using a mother code selected last time and a punching check sequence with a compatible code rate higher than the last time when a first instruction of an encoding end is received;

when a second instruction of the encoding end is received, decoding the information to be decoded by using the mother code selected last time and the punching check sequence with the compatible code rate lower than the last time;

determining to feed back ACK information when the decoding is successful, otherwise, feeding back NACK information;

the first indication is that the code rate is determined to be up-cut and the mother code does not need to be switched; the second indication determines code rate down-cutting and does not require switching mother codes.

11. An apparatus for enhancing adaptive data transmission, the apparatus acting as a coder, comprising:

the code rate switching judgment module is used for acquiring the information to be coded and judging whether the code rate up-cut or down-cut condition is met or not when the ACK feedback is received;

the mother code is a sequence code in an MCS table, different punching check sequences are used for indicating punching positions of check sequences obtained after the mother code is used for coding, and the more punching positions, the higher the compatible code rate corresponding to the punching check sequences is.

12. An apparatus for enhancing adaptive data transmission, the apparatus acting as a decoding side, comprising:

the first decoding module is used for acquiring information to be decoded, and decoding the information to be decoded by using a last selected mother code and a punching check sequence with a compatible code rate higher than the last time when a first instruction of an encoding end is received;

the second decoding module is used for decoding the information to be decoded by utilizing the mother code selected last time and the punching check sequence with the compatible code rate lower than the last time according to a second indication of the encoding end;

13. An apparatus for enhanced adaptive data transmission, comprising at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-9 or to perform the method of claim 10.

14. A computer program medium, characterized in that the computer storage medium stores a computer program for causing a computer to perform the method of any one of claims 1-9 or to perform the method of claim 10.