WO2022142814A1

WO2022142814A1 - Method and apparatus for processing code block on basis of hybrid automatic repeat request

Info

Publication number: WO2022142814A1
Application number: PCT/CN2021/131089
Authority: WO
Inventors: 蔡晓; 仲崇祥; 李俊强; 曾建富
Original assignee: 展讯通信（上海）有限公司
Priority date: 2020-12-31
Filing date: 2021-11-17
Publication date: 2022-07-07
Also published as: CN112636879B; CN112636879A

Abstract

The embodiments of the present application relate to the technical field of communications. Provided are a method and apparatus for processing a code block (CB) on the basis of a hybrid automatic repeat request (HARQ). The method comprises: acquiring a block error rate of a CB based on HARQ transmission; and when the block error rate meets a preset condition, processing both the quantity of soft information of a target CB during HARQ transmission and the quantity of soft information of an unsuccessfully decoded CB after the target CB into L, wherein the target CB is a corresponding currently unsuccessfully decoded CB when the block error rate meets the preset condition, and L is less than or equal to the quantity of soft information actually required for CB storage. Therefore, when the capacity of an HARQ buffer is insufficient or a DDR bandwidth is insufficient, part of soft information can be stored in an unsuccessfully decoded CB to the greatest extent in the HARQ buffer, thereby improving the utilization rate of the HARQ buffer.

Description

Method and apparatus for code block processing based on hybrid automatic repeat request

This application claims the priority of the Chinese patent application filed on December 31, 2020 with the State Intellectual Property Office of China, the application number is 202011636598.5, and the application name is "Method and Apparatus for Code Block Processing Based on Hybrid Automatic Repeat Request", which The entire contents of this application are incorporated by reference.

technical field

The present application relates to the field of communication technologies, and in particular, to a method and apparatus for code block processing based on a hybrid automatic repeat request.

Background technique

In a communication system, a transport block (TB) can be divided into multiple code blocks (code blocks, CB), and each code block can contain multiple bits. The transmitting end transmits in the form of multiple code blocks, and the receiving end receives and processes the multiple code blocks. When the decoding fails at the receiving end, the failed CB can be stored in a hybrid automatic repeat request (HARQ) buffer or a double data rate (DDR) memory. The HARQ method is used to request the transmitter to retransmit the signal, and the receiver combines the retransmitted signal and the previously received signal before decoding.

Usually, in the process of storing the CB that fails to decode, when the capacity of the HARQ Buffer is insufficient or the DDR bandwidth is insufficient, all the soft information of the CB that exceeds the storage capacity can be discarded. However, the above storage method makes the utilization efficiency of the HARQ buffer low.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a method and device for code block processing based on hybrid automatic repeat request, which relate to the field of communication technologies, and can solve the problem in the prior art that when the capacity of the HARQ Buffer is insufficient or the DDR bandwidth is insufficient, it is necessary to give up the excess storage capacity The whole soft information of the CB makes the utilization efficiency of the HARQ buffer less efficient.

In a first aspect, an embodiment of the present application provides a method for CB processing based on HARQ, including: acquiring a block error rate of a CB based on HARQ transmission; The soft information number of the target CB in the transmission and the soft information number of the CB that fails to decode after the target CB are all processed as L; wherein, the target CB is when the block error rate satisfies the preset condition For the corresponding CB that currently fails to decode, the L is less than or equal to the number of soft information actually stored by the CB.

In a feasible implementation manner, the L satisfies:

L=min(RealL,(T-CBNumThr*RealL)/(C-CBNumThr))

Wherein, the T is the maximum number of soft information that can be stored in the HARQ buffer for storing the CB that fails to decode; the C is the number of CBs in the HARQ transmission, and the RealL is the CB The number of soft information required for actual storage, and the CBNumThr is a preset CB number threshold.

In a feasible implementation manner, the number of soft information of the target CB in the HARQ transmission and the number of soft information of the CBs that fail to decode after the target CB are processed as L, including: in the target CB When the number of soft information is greater than the L, select the first L soft information in the target CB; and/or, the number of soft information of the CB that fails to decode after the target CB is greater than the L Next, select the first L soft information in the CBs that fail to decode after the target CB.

In a feasible implementation manner, the acquiring the block error rate of the CB based on HARQ transmission includes: acquiring the number of the CB in the HARQ transmission; when the number is greater than a first threshold, acquiring the block error rate.

In a feasible implementation manner, the block error rate satisfying a preset condition includes:

CBBLER≥CBBLERThr

or,

CBErrCnt*N≥(CBIdx+1)*CBErrThr

Wherein, the CBBLER is the block error rate, the CBBLERThr is a preset second threshold, the CBErrThr is a CBBLER threshold represented by a 4-bit bit width, and the CBErrCnt represents the number of CBs in the current decoding process in error number, the CBIdx is the number of the CB, the N is a constant, and the CBBLERThr=CBErrThr/N.

In a feasible implementation manner, the method further includes: writing the CBs whose number of pieces of soft information is the L into the HARQ buffer.

In a feasible implementation manner, the method further includes: acquiring the soft information of the CB that fails to decode stored in the HARQ buffer; and performing decoding according to the soft information of the CB that fails to decode stored in the HARQ buffer.

In a second aspect, an embodiment of the present application provides an apparatus for HARQ-based CB processing, the apparatus comprising:

an acquisition module for acquiring the block error rate of the CB based on HARQ transmission;

The processing module is configured to equalize the soft information number of the target CB in the HARQ transmission and the soft information number of the CB after the target CB that fails to decode when the block error rate satisfies a preset condition. Processing is L; wherein, the target CB is the CB that the corresponding current decoding fails when the block error rate satisfies the preset condition, and the L is less than or equal to the number of soft information required for the actual storage of the CB .

In a feasible implementation manner, the L satisfies:

L=min(RealL,(T-CBNumThr*RealL)/(C-CBNumThr))

In a feasible implementation manner, the processing module is specifically used for:

In the case where the number of soft information of the target CB is greater than the L, select the first L soft information in the target CB; and/or, the number of soft information of the CB that fails to decode after the target CB is greater than the number of soft information of the target CB. In the case of the above L, the first L soft information in the CBs that fail to decode after the target CB are selected.

In a feasible implementation manner, the acquisition module is specifically used for:

Acquire the number of the CB in the HARQ transmission; when the number is greater than the first threshold, acquire the block error rate.

CBBLER≥CBBLERThr

or,

CBErrCnt*N≥(CBIdx+1)*CBErrThr

In a feasible implementation manner, the processing module is further used for:

Write the CBs whose number of soft information is the L into the HARQ buffer.

In a feasible implementation manner, the acquisition module is further used for:

Acquiring the soft information of the CB that fails to decode stored in the HARQ buffer; the processing module is further configured to perform decoding according to the soft information of the CB that fails to decode stored in the HARQ buffer.

In a third aspect, an embodiment of the present application provides an electronic device, including: at least one processor and a memory;

the memory stores computer-executable instructions;

The at least one processor executes the computer-executable instructions stored in the memory to cause the at least one processor to perform the method of HARQ-based CB processing as provided by the first aspect.

In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when a processor executes the computer-executable instructions, the implementation as provided in the first aspect is realized A method for HARQ-based CB processing.

Embodiments of the present application provide a method and device for HARQ-based CB processing, to obtain a block error rate of a CB based on HARQ transmission, and when the block error rate satisfies a preset condition, the soft information of the target CB in HARQ transmission is The number of soft information of the CB that fails to decode after the number and the target CB is processed as L, wherein, the target CB is the CB corresponding to the current decoding failure when the block error rate satisfies the preset condition, and L is less than or equal to the actual CB. Store the required number of soft messages. In this way, when the capacity of the HARQ buffer is insufficient or the DDR bandwidth is insufficient, a part of the soft information can be stored in the HARQ buffer as much as possible in the CBs that satisfy the decoding failure, thereby improving the utilization efficiency of the HARQ buffer.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description serve to explain the principles of the disclosure.

1 is a schematic diagram of the architecture of a communication system provided by the present application;

2 is a schematic flowchart of decoding processing performed by a receiving end according to an embodiment of the present application;

3 is a schematic flowchart of a method for HARQ-based CB processing provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of processing soft information according to an embodiment of the present application;

5 is a schematic diagram of a program module of an apparatus for HARQ-based CB processing provided by an embodiment of the present application;

FIG. 6 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.

The above-mentioned drawings have shown clear embodiments of the present disclosure, and will be described in more detail hereinafter. These drawings and written descriptions are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the disclosed concepts to those skilled in the art by referring to specific embodiments.

Detailed ways

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. Where the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the illustrative examples below are not intended to represent all implementations consistent with this disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as recited in the appended claims.

The embodiments of the present application may be applied to wireless communication systems. It should be noted that the wireless communication systems mentioned in the embodiments of the present application include but are not limited to: a global system of mobile communication (GSM) system, a code division multiple access (CDMA) code division multiple access, CDMA) system, wideband code division multiple access (WCDMA) system, general packet radio service (general packet radio service, GPRS), long term evolution (long term evolution, LTE) system, advanced LTE-A (LTE advanced) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), universal mobile telecommunication system (UMTS) etc., 5th generation mobile networks (5G) communication system, new radio (NR) communication system and future 6th generation mobile networks (6G) communication system , Bluetooth system, WiFI system, satellite communication system, device-to-device (D2D) communication system, machine communication system, Internet of Vehicles and even more advanced communication systems.

The communication apparatuses involved in the embodiments of the present application mainly include network equipment or terminal equipment. Exemplarily, the sending end in the embodiment of the present application may be a network device, and the receiving end is a terminal device. In the embodiments of the present application, the sending end is a terminal device, and the receiving end is a network device.

In the embodiments of the present application, the terminal device (terminal device) includes but is not limited to a mobile station (mobile station, MS), a mobile terminal (mobile terminal), a mobile phone (mobile phone), a mobile phone (handset), and a portable device (portable equipment). ), etc., the terminal device may communicate with one or more core networks via a radio access network (RAN), for example, the terminal device may be a mobile phone (or "cellular" phone), with wireless communication The terminal device can also be a computer with wireless transceiver function, virtual reality (VR) terminal device, augmented reality (AR) terminal device, wireless terminal in industrial control (industrial control), Wireless terminals in self driving, wireless terminals in remote medical, wireless terminals in smart grid, wireless terminals in transportation safety, smart city ), wireless terminals in smart homes, and so on. Terminals may be called by different names in different networks, for example: User Equipment, Mobile Station, Subscriber Unit, Station, Cellular Phone, Personal Digital Assistant, Wireless Modem, Wireless Communication Device, Handheld Device, Laptop, Cordless Phone, Wireless local loop station, etc. For the convenience of description, it is simply referred to as a terminal device in this application.

In this embodiment of the present application, the network device may be a device for communicating with terminal devices, for example, may be a base station (base transceiver station, BTS) in a GSM system or CDMA, or a base station (nodeB) in a WCDMA system , NB), it can also be an evolved base station (evolutional nodeB, eNB or eNodeB) in the LTE system, a transceiver point (transmission reception point, TRP) or a next-generation node B (generation) in a new radio (new radio, NR) network. nodeB, gNB), or the network equipment can be satellites, relay stations, access points, in-vehicle equipment, wearable equipment, and network-side equipment, base stations or future evolved public land mobile networks (PLMNs) in 5G networks ) in the network equipment, etc., or network equipment in a network where other technologies are integrated. It should be noted that when the solutions of the embodiments of the present application are applied to other systems that may appear in the future, the names of base stations and terminals may change, but this does not affect the implementation of the solutions of the embodiments of the present application.

The embodiments of the present application relate to a channel coding and decoding technology for improving the reliability of information transmission and ensuring communication quality in a communication scenario, and can be applied to scenarios in which information is encoded and decoded, for example, can be applied to enhanced mobile broadband (enhanced mobile broadband) mobile broad band (eMBB) uplink control information and downlink control information are encoded and decoded, and can also be applied to other scenarios, such as channel coding applied to 5.1.3 of the communication standard TS 36.212, uplink control information , downlink control information, and the channel coding part of the Sidelink channel, which are not limited in this embodiment of the present application.

The embodiments of the present application are not only applicable to wireless communication, but also to a series of application scenarios that require encoding and decoding, such as wired communication and data storage.

Exemplarily, FIG. 1 is a schematic structural diagram of a communication system provided by the present application. As shown in FIG. 1 , the communication system in this embodiment of the present application may include a sending end and a receiving end.

Optionally, when the sending end is a terminal device, the receiving end is a network device. When the sender is a network device, the receiver is a terminal device.

The sender can also be called the encoder. The transmitting end includes an encoder, and the transmitting end can perform encoding through the encoder, and transmit the encoded sequence to the receiving end through a channel.

The receiving end can also be called the decoding end. The receiving end includes a decoder, and the receiving end can decode the received sequence through the decoder.

As shown in Figure 1, when the sender is a terminal device and the receiver is a network device, the channel used to send information from the sender to the receiver can be called the uplink channel, and the channel used to send information from the receiver to the sender can be called the uplink channel. for the downlink channel. The transmitting end may encode the information before sending the information, and send the encoded information to the receiving end. If the decoding fails at the receiving end, retransmission may be implemented based on HARQ. Among them, HARQ may be a technology formed by combining forward error correction coding (forward error correction, FEC) and automatic repeat request (auto repeat request, ARQ). The HARQ-based communication method can be: in the case of a decoding failure at the receiving end, the receiving end can transmit an uncertain message to the sending end through a feedback link, and request the sending end to retransmit the same data, and the receiving end combines the received data decoding.

It should be noted that FIG. 1 is only an architecture diagram of a communication system in the form of an example, and is not intended to limit the architecture of the communication system.

Exemplarily, FIG. 2 is a schematic flowchart of decoding processing performed by a receiving end according to an embodiment of the present application.

The TB (including multiple CBs) is encoded by the sender and transmitted to the receiver via the channel. As shown in Figure 2, at the receiving end, the input soft information (or can be understood as log likelihood ratio (LLR)) is deinterleaved/descrambled by the deinterleaving/descrambling processing unit, the HARQ combining processing unit, and the decoder. The code processing unit and the CB cyclic redundancy check (cyclic redundancy check, CRC) unit, etc., can finally output the CB CRC check result.

Exemplarily, in some channel scenarios, for example, extended typical urban model (extended typical urban model, ETU), extended vehicle channel model (extended vehicular a model, EVA) or other types of channels, it may appear that the first transmission Most or all of the CBs in the TB are decoded incorrectly. At this time, the soft information of the decoded CBs needs to be stored in the HARQ Buffer.

When the capacity of the HARQ Buffer is insufficient, a HARQ-based CB processing method provided by the embodiment of the present application can be used. The number of soft information of the CB in the HARQ Buffer. When the receiving end decodes, the soft information of the CB stored in the HARQ Buffer can be obtained, and combined and decoded with the soft information of the correctly decoded CB.

In a communication system, a TB can be divided into C CBs. For example, in an NR system, a TB can be divided into a maximum of 152 CBs. At the receiving end, if all CBs in the TB are decoded correctly, ACK can be reported; if any CB is decoded incorrectly, NACK can be reported. At the sending end, if the sending end receives ACK information, the HARQ process sends new data; if the sending end receives NACK information, the HARQ process retransmits the data. Therefore, if the receiving end has any CB decoding error, the transmitting end can retransmit the data based on HARQ.

Exemplarily, in an NR system, HARQ retransmission in a code block group (CBG) mode is also supported, and a TB can be divided into N (N=2/4/6/8) CBGs, and in each CBG Contains several CBs. For example, in NR, a TB can be divided into up to 152 CBs, so in CBG mode, a CBG can contain up to 76 CBs. At the receiving end, if all CBs in the CBG are decoded correctly, the CBG can report ACK; if there is any CB decoding error in the CBG, the CBG can report NACK. At the sending end, according to the ACK/NACK information of each CBG reported by the receiving end, generate CBG transmission indication (transmission information, CBGTI) information and map it to downlink control information (downlink control information, DCI), and retransmit the corresponding CBG .

According to the 38.214 protocol, assuming that a TB can be divided into N CBGs at most, and the total number of CBs in a TB is C, the number of CBGs in this TB can be:

M=min(N,C)

Pick

M ₁ =mod(C,M)

If M ₁ >0, m CBGs can contain m·K ₁ +k CBs, where m=0,1,...,M ₁ -1; k=0,1,...,K ₁ - 1.

If M ₁ =0, m CBGs can contain CB M ₁ ·K ₁ +(mM ₁ )·K ₂ +k CBs, where m=M ₁ , M ₁ +1, . . . , M-1; k=0,1,..., _K2-1 .

Exemplarily, if the maximum number of CBGs in a TB is N=2, and the number of CBs in a TB is C=13, the CBG division method of the TB is shown in Table 1 below:

Table 1

It can be understood that, a method for HARQ-based CB processing provided in the embodiments of the present application can also be applied to HARQ-based CBG processing.

A possible implementation of the HARQ-based CB processing method is that when the capacity of the HARQ Buffer is insufficient or the DDR bandwidth is insufficient, all the soft information of the CB that exceeds the storage capacity can be discarded.

However, due to the lack of all the soft information of the part of the CB that is abandoned for storage in the above method, the performance of the entire TB is limited by the part of the CB that is abandoned for storage, resulting in an impact similar to the "cask effect".

In order to solve the above technical problems, the embodiment of the present application provides a method for CB processing based on HARQ, which can obtain the block error rate of the CB based on HARQ transmission currently. The number of soft information of the target CB and the number of soft information of the CB whose decoding fails after the target CB are both processed as L, wherein the target CB can be the CB corresponding to the current decoding failure when the block error rate satisfies the preset condition, L can be less than or equal to the number of soft information actually stored by the CB. In this way, in the scenario where the capacity of the HARQ buffer or the DDR bandwidth is limited, every CB with decoding errors can store a part of the soft information as much as possible to improve the HARQ buffer. utilization efficiency. For details, please refer to the following examples of the present application.

Exemplarily, FIG. 3 is a schematic flowchart of a method for HARQ-based CB processing provided by an embodiment of the present application. As shown in Figure 3, the method may include the following steps:

S301. Obtain the block error rate of the CB based on HARQ transmission.

In the embodiment of the present application, the block error rate of the CB is the ratio of the number of CBs with decoding errors to the total number of CBs currently transmitted in the currently transmitted CBs.

Exemplarily, the block error rate of the current CB can be as shown in Table 2:

Table 2

Among them, CBIdx represents the number of the current CB, CB BLER represents the CB block error rate, and CBErrCnt represents the number of CBs with decoding errors in the currently transmitted CB.

S302. In the case that the block error rate satisfies the preset condition, the number of soft information of the target CB in the HARQ transmission and the number of soft information of the CBs that fail to decode after the target CB are both processed as L.

In the embodiment of the present application, the target CB is the CB whose current decoding fails when the block error rate meets the preset condition, and L is less than or equal to the number of soft information (or can be understood as the length of soft information) actually stored by the CB.

Exemplarily, the preset condition of the block error rate may be set by the user to satisfy the block error rate threshold for obtaining the optimal L. It can be understood that, the method for setting the block error rate may include other contents according to the actual scene, which is not limited in this embodiment of the present application.

In the embodiment of the present application, if the block error rate of the CB does not meet the preset condition, the number of soft information required for actually storing the CB may be buffered in the HARQ buffer.

Exemplarily, FIG. 4 is a schematic diagram of soft information processing provided by an embodiment of the present application. As shown in Figure 4, Ncb is the maximum number of each CB in transmission. The Ncb can be adjusted according to the rate matching method to match the bearing capacity of the physical channel, and the bit rate required by the transmission format can be achieved during channel mapping. The number of LLRs in the adjusted Ncb is the actual number of LLRs. Wherein, the rate matching method may include punching, repetition and other methods.

In the actual number of LLRs, the HARQ-based CB processing method provided in the embodiment of the present application may be used to obtain the L pieces of soft information. Exemplarily, the first L pieces of soft information in the actual number of LLRs may be acquired. It can be understood that the method for obtaining the L pieces of soft information in the CB that fails to decode may include other contents according to the actual scenario, which is not limited in the embodiment of the present application.

In the embodiment of the present application, when the block error rate of the CB satisfies the preset condition, the length of the CB that fails to decode in HARQ (or can be understood as the number of soft information in the CB) can be processed as L, so that when When the capacity of the HARQ Buffer is insufficient or the DDR bandwidth is insufficient, a part of the soft information can be stored in the HARQ buffer as much as possible in the CBs that satisfy the decoding failure, thereby improving the utilization efficiency of the HARQ buffer.

In a possible implementation, L satisfies:

L=min(RealL,(T-CBNumThr*RealL)/(C-CBNumThr))

In the embodiment of the present application, T is the maximum number of soft information that can be stored in the HARQ buffer for storing the CB that fails to decode; C is the number of CBs in HARQ transmission, and RealL is the soft information actually stored by the CB. number, CBNumThr is the preset CB number threshold.

Exemplarily, the preset condition of CBNumThr may be set by the user to satisfy the CB number threshold for obtaining the optimal L. It can be understood that, the setting method of CBNumThr may include other contents according to the actual scene, which is not limited in this embodiment of the present application.

Exemplarily, if 60 CBs that fail to be decoded need to be stored, and each CB contains 10 pieces of soft information, a space for a total of 600 pieces of soft information is required in the cache. If there is space for 400 pieces of soft information in the HARQ buffer, and the threshold of the CB number is 10, it can be understood that the block error rate of the first 10 CBs that fail to decode need not be obtained. When the block error rate of the 11th CB that fails to decode exceeds the set threshold. Then from the 11th CB that fails to decode to the 60th CB that fails to decode, the number of buffered soft information can be: (400-10*10)/(60-10), and it is obtained that the buffered soft information can be The number of soft information of the CB that fails to decode is 6.

In this embodiment of the present application, when the capacity of the HARQ buffer is insufficient or the DDR bandwidth is insufficient, a part of soft information can be stored in the HARQ buffer and in the CB that meets the decoding failure, so as to obtain the same data as when the HARQ buffer is sufficient. performance.

In a feasible implementation manner, the number of soft information of the target CB in the HARQ transmission and the number of soft information of the CB whose decoding fails after the target CB are both processed as L, including: the number of soft information of the target CB In the case of greater than L, the first L soft information in the target CB is selected; and/or, when the number of soft information of the CBs that fail to decode after the target CB is greater than L, the decoding after the target CB is selected to fail The first L soft information in the CB of .

In a feasible implementation manner, acquiring the block error rate of the CB based on HARQ transmission includes: acquiring the number of the CB in the HARQ transmission; and acquiring the block error rate when the number is greater than a first threshold.

In a feasible implementation manner, the block error rate satisfying the preset condition includes:

CBBLER≥CBBLERThr

or,

CBErrCnt*N≥(CBIdx+1)*CBErrThr

In the embodiment of the present application, CBBLER is the block error rate, CBBLERThr is a preset second threshold, CBErrThr is the CBBLER threshold represented by a 4-bit bit width, CBErrCnt represents the number of CBs with errors in the current decoding process, and CBIdx is the CB's Number, N is a constant, CBBLERThr=CBErrThr/N.

Exemplarily, the CBBLERThr is a preset block error rate threshold. The N is a constant set for ease of operation and hardware implementation. For example, when CBBLERThr is 0.9, N can be set to 16, then CBErrThr can be set to 14.4, which is more convenient for hardware implementation.

It can be understood that the method for selecting the value of N may include other contents according to the actual scenario, which is not limited in this embodiment of the present application.

Exemplarily, the above formula can also be expressed as:

CBErrCnt≥(CBIdx+1)*CBBLERThr

In a feasible implementation manner, the method further includes: writing the CBs whose number of pieces of soft information is L into the HARQ buffer.

Exemplarily, an identifier may be set for the soft information of the CB stored in the HARQ buffer. For example, the identifier may be a character, a character string, a number, or other types of identifiers such as bit information transmitted by one or more bits.

When decoding, the soft information of the CB that fails to be decoded can be acquired according to the identifier in the HARQ buffer, and combined with the soft information of the CB that has been successfully decoded for decoding.

In this embodiment of the present application, during decoding, the soft information of the CB that fails to be decoded stored in the HARQ buffer can be obtained, so that better decoding effect can be obtained during combined decoding.

Based on the content described in the foregoing embodiments, an apparatus for HARQ-based CB processing is also provided in the embodiments of the present application. Exemplarily, FIG. 5 is a schematic diagram of program modules of an apparatus for HARQ-based CB processing provided by an embodiment of the present application. The foregoing apparatus includes an acquisition module 501 and a processing module 502 .

Obtaining module 501, for obtaining the block error rate of the CB based on HARQ transmission;

The processing module 502 is used to process the soft information number of the target CB in the HARQ transmission and the soft information number of the CB after the target CB with decoding failure as L when the block error rate satisfies the preset condition; wherein , the target CB is the CB corresponding to the current decoding failure when the block error rate satisfies the preset condition, and L is less than or equal to the number of soft information actually stored by the CB.

In a possible implementation, L satisfies:

L=min(RealL,(T-CBNumThr*RealL)/(C-CBNumThr))

Among them, T is the maximum number of soft information that can be stored in the HARQ buffer for storing the CB that fails to decode; C is the number of CBs in HARQ transmission, RealL is the number of soft information actually stored by the CB, CBNumThr Threshold for the preset CB number.

In a feasible implementation manner, the processing module 502 is specifically configured to:

When the number of soft information of the target CB is greater than L, select the first L soft information in the target CB; and/or, when the number of soft information of the CBs that fail to decode after the target CB is greater than L, Select the first L soft information in the CB that fails to decode after the target CB.

In a feasible implementation manner, the obtaining module 501 is specifically used for:

Obtain the number of the CB in HARQ transmission; when the number is greater than the first threshold, obtain the block error rate.

CBBLER≥CBBLERThr

or,

CBErrCnt*N≥(CBIdx+1)*CBErrThr

Among them, CBBLER is the block error rate, CBBLERThr is the preset second threshold, CBErrThr is the CBBLER threshold represented by a 4-bit bit width, CBErrCnt is the number of CBs with errors in the current decoding process, CBIdx is the number of the CB, and N is Constant, CBBLERThr=CBErrThr/N.

In a feasible implementation manner, the processing module 502 is further configured to:

Write the CBs whose number L of soft information is processed into the HARQ buffer.

In a feasible implementation manner, the acquiring module 501 is further configured to:

Acquire the soft information of the CB that fails to decode stored in the HARQ buffer; the processing module 502 is further configured to perform decoding according to the soft information of the CB that fails to decode stored in the HARQ buffer.

The apparatus for processing the code block CB of HARQ provided by any of the foregoing embodiments can be used to implement the solutions in the foregoing embodiments, and the implementation principles and technical effects thereof are similar, and will not be repeated here.

It should be noted that it should be understood that the division of each module of the above apparatus is only a division of logical functions, and may be fully or partially integrated into a physical entity in actual implementation, or may be physically separated. And these modules can all be implemented in the form of software calling through processing elements; they can also all be implemented in hardware; some modules can also be implemented in the form of calling software through processing elements, and some modules can be implemented in hardware. For example, the processing module may be a separately established processing element, or it may be integrated into a certain chip of the above-mentioned apparatus to realize, in addition, it may also be stored in the memory of the above-mentioned apparatus in the form of program code, and a certain processing element of the above-mentioned apparatus may be used. Call and execute the function of the above determined module. The implementation of other modules is similar. In addition, all or part of these modules can be integrated together, and can also be implemented independently. The processing element here may be an integrated circuit with signal processing capability. In the implementation process, each step of the above-mentioned method or each of the above-mentioned modules can be completed by an integrated logic circuit of hardware in the processor element or an instruction in the form of software.

For example, the above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more application specific integrated circuits (ASIC), or one or more microprocessors (digital) signal processor, DSP), or, one or more field programmable gate arrays (field programmable gate array, FPGA), etc. For another example, when a certain module above is implemented in the form of a processing element scheduling program code, the processing element may be a general-purpose processor, such as a central processing unit (central processing unit, CPU) or other processors that can call program codes. For another example, these modules can be integrated together and implemented in the form of a system-on-a-chip (SOC).

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the procedures or functions according to the embodiments of the present application are generated in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device. Computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer, server, or data center over a wire (e.g. coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (eg infrared, wireless, microwave, etc.) means to transmit to another website site, computer, server or data center. A computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, a data center, or the like that includes an integration of one or more available media. Useful media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVDs), or semiconductor media (eg, solid state disks (SSDs)), and the like.

FIG. 6 is a schematic structural diagram of an electronic device provided by an embodiment of the present application. As shown in FIG. 6 , the device may include: a processor 601 and a memory 602 .

The processor 601 executes the computer-executed instructions stored in the memory, so that the processor 601 executes the solutions in the above embodiments.

The processor 601 can be a general-purpose processor, including a central processing unit CPU, a network processor (NP), etc.; it can also be a digital signal processor DSP, an application-specific integrated circuit ASIC, a field programmable gate array FPGA or other programmable Logic devices, discrete gate or transistor logic devices, discrete hardware components.

The memory 602 stores computer execution instructions, and may include random access memory (random access memory, RAM), and may also include non-volatile memory (non-volatile memory), such as at least one disk storage. Optionally, the device may further include: a system bus 603 , and the memory 602 may be connected to the processor 601 through the system bus 603 to complete mutual communication.

The system bus 603 may be a peripheral component interconnect standard (peripheral component interconnect, PCI) bus or an extended industry standard architecture (extended industry standard architecture, EISA) bus or the like. The system bus can be divided into address bus, data bus, control bus and so on. For ease of presentation, only one thick line is used in the figure, but it does not mean that there is only one bus or one type of bus.

Embodiments of the present application may further provide a computer-readable storage medium, where computer instructions are stored in the computer-readable storage medium, and when the computer instructions are executed on a computer, the computer can execute the solutions of the foregoing embodiments.

Embodiments of the present application may further provide a chip for running instructions, where the chip is used to execute the solutions in the foregoing embodiments.

Embodiments of the present application may also provide a computer program product, where the computer program product includes a computer program, which is stored in a computer-readable storage medium, at least one processor can read the computer program from the computer-readable storage medium, and at least one process The solutions in the above embodiments can be implemented when the computer executes the computer program.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present application. scope.

Claims

A method for processing code blocks based on a hybrid automatic repeat request, comprising:

Obtain the block error rate of the code block CB transmitted based on the HARQ request for HARQ;

In the case that the block error rate satisfies the preset condition, the number of soft information of the target CB in the HARQ transmission and the number of soft information of the CB that fails to decode after the target CB are both processed as L;

Wherein, the target CB is the CB corresponding to the current decoding failure when the block error rate satisfies the preset condition, and the L is less than or equal to the number of soft information actually stored by the CB.
The method of claim 1, wherein the L satisfies:

L=min(RealL,(T-CBNumThr*RealL)/(C-CBNumThr))

Wherein, the T is the maximum number of soft information that can be stored in the HARQ buffer for storing the CB that fails to decode; the C is the number of CBs in the HARQ transmission, and the RealL is the CB The number of soft information required for actual storage, and the CBNumThr is a preset CB number threshold.
The method according to claim 1, wherein the number of soft information of the target CB in the HARQ transmission and the number of soft information of the CB whose decoding fails after the target CB are both processed as L, including:

In the case that the number of soft information of the target CB is greater than the L, select the first L soft information in the target CB; and/or,

In the case that the number of soft information of the CBs that fail to decode after the target CB is greater than the L, the first L pieces of soft information in the CBs that fail to decode after the target CB are selected.
The method according to claim 1, wherein the acquiring the block error rate of the CB based on HARQ transmission comprises:

obtaining the number of the CB in the HARQ transmission;

When the number is greater than the first threshold, the block error rate is acquired.
The method according to claim 4, wherein the block error rate satisfying a preset condition comprises:

CBBLER≥CBBLERThr

or,

CBErrCnt*N≥(CBIdx+1)*CBErrThr

Wherein, the CBBLER is the block error rate, the CBBLERThr is a preset second threshold, the CBErrThr is a CBBLER threshold represented by a 4-bit bit width, and the CBErrCnt represents the number of CBs in the current decoding process in error number, the CBIdx is the number of the CB, the N is a constant, and the CBBLERThr=CBErrThr/N.
The method according to any one of claims 1-5, wherein the method further comprises:

Write the CBs whose number of soft information is the L into the HARQ buffer.
The method according to claim 6, wherein the method further comprises:

Obtain the soft information of the CB that fails to decode stored in the HARQ cache;

Decoding is performed according to the soft information of the CB that fails to be decoded stored in the HARQ buffer.
A device for code block processing based on a hybrid automatic repeat request, comprising:

an acquisition module for acquiring the block error rate of the CB based on HARQ transmission;

The processing module is configured to equalize the soft information number of the target CB in the HARQ transmission and the soft information number of the CB after the target CB that fails to decode when the block error rate satisfies a preset condition. Processing is L; wherein, the target CB is the CB that the corresponding current decoding fails when the block error rate satisfies the preset condition, and the L is less than or equal to the number of soft information required for the actual storage of the CB .
The device according to claim 8, wherein the L satisfies:

L=min(RealL,(T-CBNumThr*RealL)/(C-CBNumThr))

Wherein, the T is the maximum number of soft information that can be stored in the HARQ buffer for storing the CB that fails to decode; the C is the number of CBs in the HARQ transmission, and the RealL is the CB The number of soft information required for actual storage, and the CBNumThr is a preset CB number threshold.
The device according to claim 8, wherein the processing module is specifically configured to:

In the case where the number of soft information of the target CB is greater than the L, select the first L soft information in the target CB; and/or, the number of soft information of the CB that fails to decode after the target CB is greater than the number of soft information of the target CB. In the case of the above L, the first L soft information in the CBs that fail to decode after the target CB are selected.
The device according to claim 8, wherein the acquisition module is specifically configured to:

Acquire the number of the CB in the HARQ transmission; when the number is greater than the first threshold, acquire the block error rate.
The device according to claim 11, wherein the block error rate satisfying a preset condition comprises:

CBBLER≥CBBLERThr

or,

CBErrCnt*N≥(CBIdx+1)*CBErrThr

Wherein, the CBBLER is the block error rate, the CBBLERThr is a preset second threshold, the CBErrThr is a CBBLER threshold represented by a 4-bit bit width, and the CBErrCnt represents the number of CBs in the current decoding process in error number, the CBIdx is the number of the CB, the N is a constant, and the CBBLERThr=CBErrThr/N.
The device according to any one of claims 8-12, wherein the processing module is further configured to:

Write the CBs whose number of soft information is the L into the HARQ buffer.
The device according to claim 13, wherein the acquiring module is further configured to:

Acquiring the soft information of the CB that fails to decode stored in the HARQ buffer; the processing module is further configured to perform decoding according to the soft information of the CB that fails to decode stored in the HARQ buffer.
An electronic device, comprising:

memory for storing program instructions;

A processor for invoking and executing program instructions in the memory to perform the method according to any one of claims 1-7.
A computer-readable storage medium, characterized in that the storage medium stores a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1-7 is implemented.