WO2022094897A1 - Channel encoding method and apparatus - Google Patents

Abstract

The present application provides a channel encoding method and apparatus, which relate to the technical field of communications and used for the transmission performance of a communication network. In the method, a terminal device determines first data according to first channel encoding information and second channel encoding information, wherein the first channel encoding information is used for first channel encoding of the first data, the second channel encoding information is used for second channel encoding of the first data, and the number of bits comprised in the first data is determined according to the first channel encoding information and the second channel encoding information; and the terminal device performs channel encoding on the first data according to the first channel encoding information and the second channel encoding information. In this way, the size of the first data determined by the terminal device can well match first channel encoding and second channel encoding. The terminal device can perform cascaded encoding on the first data according to the first channel encoding and the second channel encoding, thereby improving the transmission performance of data transmission.

Description

Channel coding method and device technical field

The present application relates to the field of communication technologies, and in particular, to a channel coding method and device.

Background technique

In the process of wireless transmission, channel coding is usually used to encode and decode data, thereby improving the reliability of information transmission and reducing the probability of errors in the transmission process.

However, when the network signal is poor or the reliability of data transmission is high in the channel encoding and decoding method, if the code rate of the channel encoding is high, the transmission performance can be improved by repeating the method, but when the code rate of the channel encoding is low, it can only rely on The improvement of transmission performance by repetition is limited. Therefore, a channel coding method is urgently needed to improve transmission performance.

SUMMARY OF THE INVENTION

The present application provides a channel coding method and device, which solve the problem that the channel coding gain obtained when the code rate of the channel coding is low is low.

In order to solve the above-mentioned problems, the application adopts the following technical solutions:

A first aspect provides a channel coding method, comprising: a terminal device determining first data according to first channel coding information and second channel coding information; wherein the first channel coding information is used for the first channel coding information The first channel coding of a data; the second channel coding information is used for the second channel coding of the first data; the number of bits included in the first data is based on the first channel coding information and the The second channel coding information is determined.

The terminal device performs channel coding on the first data according to the first channel coding information and the second channel coding information.

Based on the above technical solutions, the technical solutions adopted in the present application can determine the first data (eg, the first transport block) according to the first channel coding information and the second channel coding information. In this way, the first data determined by the terminal device can be well matched with the first channel coding and the second channel coding. The terminal device can perform concatenated coding on the first data according to the first channel coding and the second channel coding, so as to improve the transmission performance of data transmission.

With reference to the above first aspect, in a possible implementation manner, the first channel coding information includes at least one of the following: a code rate of the first channel coding, a coding mode of the first channel coding, and the number of repetitions of the first channel coding.

The second channel coding information includes at least one of the following items: a code rate of the second channel coding, a coding mode of the second channel coding, and the number of repetitions of the second channel coding.

Based on this, the terminal device may determine the size of the first data according to the content of the first channel coding information and the second channel coding information, or perform channel coding on the first data. For example, the terminal device may perform channel coding on the first data according to the code rate of the first channel coding and the code rate of the second channel coding.

With reference to the above first aspect, in a possible implementation manner, the size of the first data is determined according to at least one of the following: a code rate R 1 of the first channel coding, a code rate R ₁ of the second channel coding The code rate R ₂ , the total number of bits G ₂ of the first data after channel coding, and the scale factor S of the first data.

In combination with the above-mentioned first aspect, in a possible implementation manner, the size of the first data TBS' (transport block size (transport block size, TBS)) is determined according to the following formula:

TBS'=R ₁ ·R ₂ ·G ₂ .

Based on this, the terminal device can accurately determine the code rate R ₁ of the first channel coding, the code rate R ₂ of the second channel coding, and the total number of bits G ₂ after channel coding the first data. The size of the first data, and then the terminal device can determine the first data according to the size of the first data and the data to be transmitted.

In combination with the above-mentioned first aspect, in a possible implementation manner, TBS' can also be determined according to the following formula:

In combination with the above-mentioned first aspect, in a possible implementation manner, TBS' can also be determined according to the following formula:

In combination with the above-mentioned first aspect, in a possible implementation manner, TBS' can also be determined according to the following formula:

Wherein, n is a non-negative integer, such as n=0, 1, 2 or 3.

In combination with the above-mentioned first aspect, in a possible implementation manner, TBS' can also be determined according to the following formula:

With reference to the above first aspect, in a possible implementation manner, the size TBS' of the first data is determined according to the following formula:

TBS'=R ₁ ·R ₂ ·G ₂ ·S.

Based on this, the terminal device can use the code rate R ₁ of the first channel coding, the code rate R ₂ of the second channel coding, the total number of bits G ₂ after the channel coding of the first data, and the The scale factor S of the first data accurately determines the size of the first data, and then the terminal device can determine the first data according to the size of the first data and the data to be transmitted.

In combination with the above-mentioned first aspect, in a possible implementation manner, TBS' can also be determined according to the following formula:

In combination with the above-mentioned first aspect, in a possible implementation manner, TBS' can also be determined according to the following formula:

In combination with the above-mentioned first aspect, in a possible implementation manner, TBS' can also be determined according to the following formula:

In combination with the above-mentioned first aspect, in a possible implementation manner, TBS' can also be determined according to the following formula:

It should be noted that, TBS' is the size of the first transport block or TBS' is the unquantized intermediate variable N _info involved in the following S301.

When TBS' is the size of the first transport block, the terminal device may directly determine the size of the first transport block according to TBS'=R ₁ ·R ₂ ·G ₂ ·S.

In the case where TBS' is the unquantized intermediate variable N _info involved in the following S301, the terminal device first determines the size of TBS' according to TBS'=R ₁ ·R ₂ ·G ₂ ·S, and then the terminal device determines the size of TBS' according to the following The method described in S301 and the value of TBS' determine the size of the first transport block.

With reference to the above first aspect, in a possible implementation manner, the method further includes: the terminal device receives first indication information from a network device; the first indication information is used to indicate the first channel coding information and at least one item of the second channel coding information.

Based on this, the network device may indicate the first channel coding information and the second channel coding information to the terminal device through the first indication information.

With reference to the above first aspect, in a possible implementation manner, the first indication information is carried in any one of the following: radio resource control (radio resource control, RRC), medium access control-control unit (medium access) control-control element, MAC-CE), downlink control information (Downlink control information, DCI).

Based on this, the network device may send the first indication information to the terminal device through any one of the RRC message, the MAC-CE or the DCI message.

With reference to the above first aspect, in a possible implementation manner, the terminal device performs channel coding on the first data according to the first channel coding information and the second channel coding information, including: the terminal The device performs a first cyclic redundancy check (CRC) on the first data to generate second data; the terminal device performs block processing on the second data and performs a second CRC to determine more number of first code blocks; the terminal device performs the first channel coding on the multiple first code blocks respectively to generate multiple second code blocks; the terminal device performs the first channel coding on the multiple second code blocks respectively Secondary channel coding generates a plurality of third code blocks.

Based on this, the terminal device can perform the first channel coding and the second channel coding on the first data through the above process, thereby improving the transmission reliability of the first data and reducing the transmission error rate of the first data.

With reference to the above first aspect, in a possible implementation manner, the number C of the first code blocks is determined according to at least one of the following: the code rate R ₁ of the first channel coding, the number of bits B of the second data, The number L of cyclic redundancy check bits of the code block, and the number of bits K _cb included in the largest code block corresponding to the second channel coding.

With reference to the above first aspect, in a possible implementation manner, the number C of the first code blocks is determined according to the following formula:

Based on this, the terminal device can use the above calculation formula, as well as the code rate R ₁ of the first channel coding, the number of bits B of the second data, the number L of CRC bits of the code block, and the second channel coding. The number of bits K _cb included in the corresponding maximum code block is encoded to determine the number of the first code block, so that the terminal device can perform block processing on the second data according to the data of the first code block.

With reference to the above first aspect, in a possible implementation manner, the number C of the first code blocks is determined according to the following formula:

Based on this, the terminal device can use the above calculation formula, as well as the code rate R ₁ of the first channel coding, the number of bits B of the second data, the number L of CRC bits of the code block, and the second channel coding. The number of bits K _cb included in the corresponding maximum code block is encoded to determine the number of the first code block, so that the terminal device can perform block processing on the second data according to the number of the first code block.

With reference to the above first aspect, in a possible implementation manner, the number of bits N included in the first code block is determined according to at least one of the following: the code rate R ₁ of the first channel coding, the number of bits of the second data B, the number L of CRC bits of the code block, and the number C of the first code block.

In combination with the above-mentioned first aspect, in a possible implementation manner, the number of bits N included in the first code block is determined according to the following formula:

N=(B/R ₁ +CL)/C.

Based on this, the terminal device can use the above calculation formula, as well as the code rate R ₁ of the first channel coding, the number of bits B of the second data, the number L of CRC bits of the code block, and the number of the first code block. C determines the number of bits of the first code block. The terminal may further perform block processing on the second data according to the number C of the first code blocks and the number of bits of the first code block to determine a plurality of first code blocks.

With reference to the above first aspect, in a possible implementation manner, the number of bits N included in the first code block is determined according to the following formula:

Based on this, the terminal device can use the above calculation formula, as well as the code rate R ₁ of the first channel coding, the number of bits B of the second data, the number L of CRC bits of the code block, and the number of the first code block. C determines the number of bits of the first code block. The terminal may further perform block processing on the second data according to the number C of the first code blocks and the number of bits of the first code block to determine a plurality of first code blocks.

With reference to the above first aspect, in a possible implementation manner, the first channel coding is repetitive coding, and the value of the code rate R ₁ of the first channel coding is determined according to the number of repetitions of the first channel coding .

Based on this, the terminal device may determine the code rate of the first channel encoding according to the repetition times of the first channel encoding. When the network device indicates the first channel coding information through the first indication information, the number of bits occupied by the first indication information can be reduced, and the signaling overhead between the terminal device and the network device can be reduced.

With reference to the above first aspect, in a possible implementation manner, in the case that the repetition times m is less than or equal to the preset threshold value Z, the value of the code rate R ₁ of the first channel coding is

Based on the above solution, the terminal device may determine the code rate of the first channel coding according to the number of repetitions when the number of repetitions m is less than or equal to the preset threshold value Z.

In combination with the above first aspect, in a possible implementation manner, when the repetition times m is greater than the preset threshold value Z, the value of the code rate R ₁ of the first channel coding is

Based on the above solution, when the number of repetitions m is greater than the preset threshold value Z, the terminal device may determine the code rate of the first channel coding according to the number of repetitions and the threshold value Z.

In a second aspect, a communication device is provided, characterized by comprising: a processing unit.

The processing unit is configured to determine the first data according to the first channel coding information and the second channel coding information; wherein the first channel coding information is used for the first channel coding of the first data; the The second channel coding information is used for the second channel coding of the first data; the number of bits included in the first data is determined according to the first channel coding information and the second channel coding information.

The processing unit is further configured to perform channel coding on the first data according to the first channel coding information and the second channel coding information.

With reference to the above second aspect, in a possible implementation manner, the first channel coding information includes at least one of the following: a code rate of the first channel coding, a coding mode of the first channel coding, and the number of repetitions of the first channel coding.

The second channel coding information includes at least one of the following items: a code rate of the second channel coding, a coding mode of the second channel coding, and the number of repetitions of the second channel coding.

With reference to the above second aspect, in a possible implementation manner, the size of the first data is determined according to at least one of the following: the code rate R 1 of the first channel coding, the code rate R ₁ of the second channel coding The code rate R ₂ , the total number of bits G ₂ of the first data after channel coding, and the scale factor S of the first data.

In combination with the above second aspect, in a possible implementation manner, the size of the first data is determined according to the following formula:

TBS'=R ₁ ·R ₂ ·G ₂ .

In combination with the above second aspect, in a possible implementation manner, TBS' can also be determined according to the following formula:

In combination with the above second aspect, in a possible implementation manner, TBS' can also be determined according to the following formula:

In combination with the above second aspect, in a possible implementation manner, TBS' can also be determined according to the following formula:

In combination with the above-mentioned first aspect, in a possible implementation manner, TBS' can also be determined according to the following formula:

With reference to the above second aspect, in a possible implementation manner, the size TBS' of the first data is determined according to the following formula:

TBS'=R ₁ ·R ₂ ·G ₂ ·S.

With reference to the above second aspect, in a possible implementation manner, the size TBS' of the first data is determined according to the following formula:

TBS'=R ₁ ·R ₂ ·G ₂ ·S.

In combination with the above second aspect, in a possible implementation manner, TBS' can also be determined according to the following formula:

In combination with the above second aspect, in a possible implementation manner, TBS' can also be determined according to the following formula:

In combination with the above second aspect, in a possible implementation manner, TBS' can also be determined according to the following formula:

In combination with the above-mentioned first aspect, in a possible implementation manner, TBS' can also be determined according to the following formula:

With reference to the above second aspect, in a possible implementation manner, the communication apparatus further includes: a communication unit.

The communication unit is configured to receive first indication information from a network device; the first indication information is used to indicate at least one of the first channel coding information and the second channel coding information.

With reference to the foregoing second aspect, in a possible implementation manner, the first indication information is carried in any one of the following: RRC, MAC-CE, and DCI.

With reference to the above second aspect, in a possible implementation manner, the processing unit is specifically configured to:

performing a first CRC on the first data to generate second data;

performing block processing on the second data and performing a second CRC to determine a plurality of first code blocks;

Performing first channel coding on the plurality of first code blocks respectively to generate a plurality of second code blocks;

A second channel coding is performed on the plurality of second code blocks respectively to generate a plurality of third code blocks.

With reference to the above second aspect, in a possible implementation manner, the number C of the first code blocks is determined according to at least one of the following: the code rate R ₁ of the first channel coding, the number of bits B of the second data, The number L of cyclic redundancy check bits of the code block, and the number of bits K _cb included in the largest code block corresponding to the second channel coding.

In combination with the above second aspect, in a possible implementation manner, the number C of the first code blocks is determined according to the following formula:

In combination with the above second aspect, in a possible implementation manner, the number C of the first code blocks is determined according to the following formula:

With reference to the above second aspect, in a possible implementation manner, the number of bits N included in the first code block is determined according to at least one of the following: the code rate R ₁ of the first channel coding, the number of bits of the second data B, the number L of CRC bits of the code block and the number C of the first code block.

With reference to the above second aspect, in a possible implementation manner, the number of bits N included in the first code block is determined according to the following formula:

N=(B/R ₁ +CL)/C.

With reference to the above second aspect, in a possible implementation manner, the number of bits N included in the first code block is determined according to the following formula:

With reference to the above second aspect, in a possible implementation manner, the first channel coding is repetitive coding, and the value of the code rate R ₁ of the first channel coding is determined according to the number of repetitions of the first channel coding .

With reference to the above second aspect, in a possible implementation manner, in the case that the repetition times m is less than or equal to the preset threshold value Z, the value of the code rate R ₁ of the first channel coding is

In combination with the above second aspect, in a possible implementation manner, in the case that the number of repetitions m is greater than the preset threshold value Z, the value of the code rate R ₁ of the first channel coding is

In a third aspect, the present application provides a communication device, including: a processor and a storage medium; the storage medium includes instructions, and the processor is configured to execute the instructions, so as to implement any possible implementation manner of the first aspect and the first aspect method described in .

In a fourth aspect, the present application provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the instructions are executed on a communication device, the communication device is made to perform any of the first and first aspects. A possible implementation of the method described in.

In a fifth aspect, the present application provides a computer program product comprising instructions that, when the computer program product is run on a communication device, cause the communication device to perform as described in the first aspect and any one of the possible implementations of the first aspect method described.

It should be understood that the description of technical features, technical solutions, beneficial effects or similar language in this application does not imply that all features and advantages may be realized in any single embodiment. On the contrary, it can be understood that the description of features or beneficial effects means that a specific technical feature, technical solution or beneficial effect is included in at least one embodiment. Therefore, descriptions of technical features, technical solutions or beneficial effects in this specification do not necessarily refer to the same embodiments. Furthermore, the technical features, technical solutions and beneficial effects described in this embodiment can also be combined in any appropriate manner. Those skilled in the art will understand that an embodiment can be implemented without one or more specific technical features, technical solutions or beneficial effects of a specific embodiment. In other embodiments, additional technical features and benefits may also be identified in specific embodiments that do not embody all embodiments.

Description of drawings

FIG. 1 is a system architecture diagram of a communication system provided by an embodiment of the present application;

FIG. 2 is a schematic flowchart of a manner in which a terminal device performs concatenated coding in the prior art provided by an embodiment of the present application;

3 is a schematic flowchart of data transmission by a terminal device in a 5G system according to an embodiment of the present application;

FIG. 4 is a schematic flowchart of a channel coding method provided by an embodiment of the present application;

5 is a schematic flowchart of another channel coding method provided by an embodiment of the present application;

FIG. 6 is an interactive flowchart of another channel coding method provided by an embodiment of the present application;

FIG. 7 is an interactive flowchart of another channel coding method provided by an embodiment of the present application;

FIG. 8 is an interactive flowchart of still another channel coding method provided by an embodiment of the present application;

FIG. 9 is an interactive flowchart of another channel coding method provided by an embodiment of the present application;

FIG. 10 is a schematic diagram of the composition of a communication device according to an embodiment of the present application;

FIG. 11 is a schematic diagram of a hardware structure of a communication device according to an embodiment of the present application;

FIG. 12 is a schematic diagram of a hardware structure of another communication device provided by an embodiment of the present application;

13 is a schematic diagram of a hardware structure of a terminal device provided by an embodiment of the present application;

FIG. 14 is a schematic diagram of a hardware structure of a network device according to an embodiment of the present application.

Detailed ways

In the description of this application, unless otherwise specified, "/" means or means, for example, A/B can mean A or B; "and/or" in this text is only a relationship to describe the related objects, Indicates that three relationships can exist, for example, A and/or B, can represent: A alone exists, A and B exist at the same time, and B exists alone. In the description of this application, unless stated otherwise, "plurality" means two or more. "At least one" refers to any one or a combination of any multiple, and "at least one" refers to any one or a combination of any multiple. For example, at least one of A, B, and C may include the following situations: ①A; ②B; ③C; ④A and B; ⑤A and C; ⑥B and C; ⑦A, B, and C.

In addition, in order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish the same or similar items with basically the same function and effect. Those skilled in the art can understand that the words "first", "second" and the like do not limit the quantity and execution order, and the words "first", "second" and the like are not necessarily different.

The channel coding method provided in this embodiment of the present application can be applied to the communication system 100 shown in FIG. 1 . As shown in FIG. 1 , the communication system 100 includes: a terminal device 10 and a network device 20 .

The terminal device 10 and the network device 20 are connected through a communication link. The terminal device 10 can send uplink data to the network device 20 through the communication link. Correspondingly, the network device 20 can receive uplink data from the terminal device 10 on the communication link. Alternatively, the network device 20 may send downlink data to the terminal device 10 through the communication link. Correspondingly, the terminal device 10 can receive the downlink data sent by the network device 20 on the communication link.

The communication systems in the embodiments of the present application include but are not limited to long term evolution (long term evolution, LTE) systems, fifth generation (5th-generation, 5G) systems, new radio (new radio, NR) systems, wireless local area networks (wireless local area networks) area networks, WLAN) systems and future evolution systems or various communication fusion systems. Exemplarily, the methods provided in the embodiments of the present application may be specifically applied to an evolved global terrestrial radio access network (evolved-universal terrestrial radio access network, E-UTRAN) and a next generation-radio access network (next generation-radio access network). , NG-RAN) system.

The network device in this embodiment of the present application is an entity on the network side that is used for sending a signal, or receiving a signal, or sending a signal and receiving a signal. The network device may be a device deployed in a radio access network (RAN) to provide wireless communication functions for terminal devices, for example, a TRP, a base station (for example, an evolved NodeB (eNB, eNB or eNodeB), a downlink Generation base station node (next generation node base station, gNB), next generation eNB (next generation eNB, ng-eNB, etc.), various forms of control nodes (for example, network controller, wireless controller (for example, cloud radio Access network (cloud radio access network, CRAN) scenario wireless controller)), road side unit (road side unit, RSU) and so on. Specifically, the network device may be various forms of macro base station, micro base station (also referred to as small cell), relay station, access point (access point, AP), etc., and may also be the antenna panel of the base station. The control node can be connected to multiple base stations, and configure resources for multiple terminal devices covered by the multiple base stations. In systems using different radio access technologies (RATs), the names of devices with base station functions may vary. For example, it may be called eNB or eNodeB in LTE system, and may be called gNB in 5G system or NR system, and the specific name of the base station is not limited in this application. The network device may also be a network device in a future evolved public land mobile network (public land mobile network, PLMN).

The terminal device in this embodiment of the present application is an entity on the user side that is used to receive a signal, or send a signal, or receive a signal and send a signal. Terminal devices are used to provide one or more of voice services and data connectivity services to users. Terminal equipment may also be referred to as user equipment (UE), terminal, access terminal, subscriber unit, subscriber station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or user device. The terminal device can be a vehicle to everything (V2X) device, for example, a smart car (smart car or intelligent car), a digital car (digital car), an unmanned car (unmanned car or driverless car or pilotless car or automobile), Self-driving car (self-driving car or autonomous car), pure electric vehicle (pure EV or Battery EV), hybrid electric vehicle (HEV), range extended EV (REEV), plug-in hybrid Power vehicle (plug-in HEV, PHEV), new energy vehicle (new energy vehicle), etc. The terminal device may also be a device to device (device to device, D2D) device, such as an electricity meter, a water meter, and the like. The terminal device can also be a mobile station (mobile station, MS), a subscriber unit (subscriber unit), an unmanned aerial vehicle, an internet of things (IoT) device, a station (station, ST) in a WLAN, a cellular phone (cellular phone) phone), smart phone (smart phone), cordless phone, wireless data card, tablet computer, session initiation protocol (SIP) phone, wireless local loop (WLL) station, personal digital processing ( personal digital assistant (PDA) device, laptop computer (laptop computer), machine type communication (MTC) terminal, handheld device with wireless communication capabilities, computing device or other processing device connected to a wireless modem, in-vehicle Devices, wearable devices (also known as wearable smart devices). The terminal device may also be a terminal device in a next-generation communication system, for example, a terminal device in a 5G system or a terminal device in a future evolved PLMN, a terminal device in an NR system, and the like.

Network equipment and terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle; can also be deployed on water; can also be deployed in the air on aircraft, balloons and satellites. The embodiments of the present application do not limit the application scenarios of the network device and the terminal device.

The embodiments of the present application may be applicable to downlink data transmission, may also be applicable to uplink data transmission, and may also be applicable to device to device (device to device, D2D) data transmission. For downlink data transmission, the sending device is a network device, and the corresponding receiving device is a terminal device. For uplink data transmission, the sending device is a terminal device, and the corresponding receiving device is a network device. For D2D data transmission, the sending device is a terminal device, and the corresponding receiving device is also a terminal device. The transmission direction of the signal in the embodiments of the present application is not limited.

Communication between network equipment and terminal equipment and between terminal equipment and terminal equipment can be carried out through licensed spectrum (licensed spectrum), or through unlicensed spectrum (unlicensed spectrum), or through licensed spectrum and unlicensed spectrum at the same time. communication. Communication between network equipment and terminal equipment and between terminal equipment and terminal equipment can be carried out through the spectrum below 6G, or through the spectrum above 6G, and can also use the spectrum below 6G and above 6G for communication at the same time. The embodiments of the present application do not limit the spectrum resources used between the network device and the terminal device.

In order to facilitate the understanding of the technical solutions provided by the embodiments of the present application, some terms in the embodiments of the present application will be explained first.

1. Modulation and demodulation

Modulation refers to the process of processing data and loading it onto a carrier into a form suitable for channel transmission.

Modulation methods include: multi-carrier modulation, single-carrier modulation, quadrature amplitude modulation (Quadrature Amplitude modulation, QAM), pulse amplitude modulation (Pulse Amplitude modulation, PAM), phase shift keying (phase shift keying, PSK) modulation, amplitude keying Amplitude shift keying (ASK) modulation.

Demodulation is the inverse process of modulation, which is used to demodulate the original data from the modulated signal. Demodulation can also sometimes be referred to as detection.

2. Resource block (RB)

A resource block may also be called a physical resource block (physical resource block), which is a basic unit of frequency resources in an OFDM-based communication system.

A resource block generally consists of N resource elements (resource elements, REs), and one resource element is also called one subcarrier. The value of N generally takes 12.

Several resource blocks form a resource block group (RBG), or also called a physical resource block group.

In the communication transmission process, precoding is usually performed in units of resource blocks or resource block groups, and the basic unit for precoding transmission is also called a precoding resource block group (Precoding Resource Block Group, PRG). One precoding resource group may not be smaller than one resource block group.

3. Codeword

A codeword is a data stream obtained after CRC insertion, code block division, and CRC insertion, channel coding, and rate matching for a transport block sent in a time slot.

Each codeword corresponds to one TB, so one terminal device transmits at most 2 codewords in one time slot. A codeword can be viewed as a TB with error protection. A codeword is further split into one or more code blocks.

4. Code block

A code block is the basic unit of channel coding of data. That is, the terminal device and/or the network device perform channel coding, rate matching (and interleaving) for all bits of one code block at a time.

5. Layer Layer

Layer Layer may also be referred to as a transmission layer. After layer mapping is performed on complex symbols (modulation symbols) obtained after scrambling and modulation of one or two codewords, they are mapped to one or more transmission layers.

The transport layer is usually mapped to the antenna port, so it is also called the antenna port. Each layer corresponds to a valid data stream. The number of transmission layers, ie the number of layers, is called "transmission rank" or "transmission rank". The transmission rank can be dynamically changed. The number of layers must be less than or equal to the minimum value of the number of transmit antenna ports and the number of receive antenna ports, that is, "number of layers≤min(number of transmit antenna ports, number of receive antenna ports)".

In the downlink transmission of NR, in general, the number of transmission layers is equal to the number of antenna ports.

The number of layers and/or the number of antenna ports (or, further including the number of each antenna port) used when indicating data and demodulation reference signal (Demodulation reference signal, DMRS) transmission can be indicated by DCI.

In NR, an antenna port may also correspond to a transmission configuration index (TCI), beam, etc. For example, one TCI corresponds to multiple antenna ports, or one beam corresponds to multiple antenna ports.

The above is a brief introduction to some of the contents and concepts involved in this application.

In the current communication system, the terminal device can perform channel coding on the data by means of concatenated coding, thereby improving the reliability of data transmission and reducing the bit error rate during the data transmission process. The specific process is as follows:

As shown in FIG. 2 , the manner in which the terminal device performs concatenated encoding on data includes the following S201-S206.

S201. The terminal device determines original information bits (source bits).

S202. The terminal device performs the first channel coding on the original information bits to determine the first information bits.

Among them, the first channel coding is also called the outer code (outer channel coder).

S203. The terminal device interleaves the first information bits to determine the second information bits.

It should be pointed out that this S203 is an optional step, that is, the terminal device may not interleave the first information bits.

S204. The terminal device performs channel coding on the second information bit for the second time to determine the third information bit.

Among them, the second channel coding is also called outer coding (inner channel coder).

S205, the terminal device performs layer mapping and time-frequency resource mapping on the third bit information after channel coding twice.

S206, the terminal device transmits the third bit information to the network device.

It should be pointed out that the concatenated encoding described in this application includes the concatenated encoding method and/or the concatenated decoding method, that is, when the terminal device and/or the network device supports the concatenated encoding capability, the terminal device and/or the network device That is, the data can be encoded in a concatenated encoding manner, and/or the concatenated encoded data can be decoded in a concatenated decoding manner.

However, the current 5G communication system does not support concatenated coding, and only supports improving transmission performance in a repetitive manner.

Currently, in the 5G system, the process of data processing performed by the physical layer of the terminal device is shown in Figure 3, including the following S301-S308.

S301. The terminal device receives the transport block 1 from the upper layer.

In a possible implementation manner, the transport block 1 is a media access control layer (media access control, MAC) data protocol unit (protocol Ddata unit, PDU).

Wherein, the size of transport block 1 (TBS1) is determined according to at least one of the following: time-domain resources, frequency-domain resources, modulation and coding scheme (MCS) indicated in the DCI, the number of layers (and/or ports) for transmission number) _NL . Among them, the modulation and coding scheme MCS is index information, which is used to indicate the modulation order

Information such as target code rate R and spectral efficiency.

In a possible implementation manner, the terminal device may determine the value of TBS1 through the following steps a to e, which are described in detail below:

Step a. The terminal device determines the unquantized intermediate variable N _info .

Among them, NL is the number of mapping layers of transport block 1, _{N RE} is the number of resource elements (REs) mapped by transport block 1, R is the target code rate,

is the modulation order.

Step b. The terminal device determines the quantized intermediate variable N' _info according to the intermediate variable N _info .

It should be pointed out that, in the case where the value of N _info is different, the method for the terminal device to determine TBS1 is different.

In a possible implementation manner, in the case of N _info ≤ 3824, the terminal device determines the value of TBS1 according to the following steps c and d (referred to as case I).

In the case of N _info >3824, the terminal device determines the value of TBS1 according to the following steps e and f (denoted as case II).

Below, case I and case II are described in detail:

Case I, N _info ≤3824

In case I, the terminal device determines the value of TBS1 according to the following steps c and d.

Step c, the terminal device is determined

in,

Step d, the terminal device queries the value of N' _info that is not greater than the value of TBS1 according to the following Table 1.

Table 1

Index	TBS	Index	TBS	Index	TBS	Index	TBS
1	twenty four	31	336	61	1288	91	3624
2	32	32	352	62	1320	92	3752
3	40	33	368	63	1352	93	3824
4	48	34	384	64	1416
5	56	35	408	65	1480
6	64	36	432	66	1544
7	72	37	456	67	1608
8	80	38	480	68	1672
9	88	39	504	69	1736
10	96	40	528	70	1800
11	104	41	552	71	1864
12	112	42	576	72	1928
13	120	43	608	73	2024
14	128	44	640	74	2088
15	136	45	672	75	2152
16	144	46	704	76	2216
17	152	47	736	77	2280
18	160	48	768	78	2408
19	168	49	808	79	2472
20	176	50	848	80	2536
twenty one	184	51	888	81	2600
twenty two	192	52	928	82	2664
twenty three	208	53	984	83	2728
twenty four	224	54	1032	84	2792
25	240	55	1064	85	2856
26	256	56	1128	86	2976
27	272	57	1160	87	3104
28	288	58	1192	88	3240
29	304	59	1224	89	3368
30	320	60	1256	90	3496

Case II, N _info > 3824

In case II, the terminal device determines the value of TBS1 according to the following steps e and f.

Step e, the terminal device is determined

in,

Step f, the terminal device determines the value of TBS1 according to the target code rate R and N' _info .

In one possible implementation, in

, the terminal device determines that the transport block 1 value is:

in,

exist

And when N' _info > 8424, the terminal device determines that the value of transport block 1 is:

in,

exist

And when N' _info ≤8424, the terminal device determines that the value of transport block 1 is:

S302 , the terminal device performs the first CRC on the transport block 1 to determine the transport block 2 .

The manner in which the terminal device performs the first CRC on the transport block 1 may refer to the prior art, which will not be described in detail in this application.

S303 , the terminal device divides the transport block 2 into blocks and performs a second CRC to determine multiple code blocks 1 .

In a possible implementation manner, after the physical layer divides the transport block 2 into blocks, C code blocks 1 are determined. C is a positive integer.

It should be pointed out that whether the terminal device performs the second CRC processing after dividing the transmission block 2 into blocks may be determined according to the number of the code transmission block 1 .

An example, when the number of code blocks 1 is 1, the block after the terminal device divides the transmission block 2 is still equivalent to the original transmission block. At this time, the terminal device does not need to block the transmission block 2. Block 1 performs the second CRC process.

In another example, when the number of code blocks 1 is greater than 1, the terminal device divides transmission block 2 into blocks and then performs second CRC processing to obtain code block 1 .

S304 , the terminal device performs channel coding on code block 1 to generate code block 2 .

S305 , the terminal device performs rate matching and scrambling on code block 2 to generate code block 3 .

In a possible implementation manner, the size E of the sixth code block satisfies the following formula 1:

Alternatively, the size of the sixth code block satisfies the following formula 2:

In this application,

Represents rounding up, and can also be represented by ceil( ).

Represents rounding down, and can also be represented by floor(·). In other implementation manners, the value of E may also be determined by rounding, such as round(·). This application is not limited.

G ₁ is the total number of bits encoded by transport block 1, which can satisfy the following formula 3:

_NL is the number of mapping layers of transport block 1,

is the modulation order of transport block 1, and N _RE is the number of resource elements (resource elements, REs) mapped by transport block 1. C is the number of fourth code blocks.

It should be pointed out that the number of the sixth code block is the same as that of the fourth code block, both being C. In the C sixth code blocks, the code block size is

The number of sixth code blocks is:

The block size is

The number of sixth code blocks is:

S306, the terminal device modulates and layer maps the code block 3.

S307: The terminal device maps the modulated and layer-mapped code block 3 to the time-frequency resource.

S308, the terminal device sends the code block 3 to the network device.

In the current 5G communication system, when a terminal device transmits data to a transport block, it can only perform channel coding once, but cannot perform concatenated coding.

In order to solve the problem that in the current 5G communication system, the terminal equipment cannot perform concatenated coding on the transport block, the present application provides a channel coding method for performing the concatenated coding on the transport block.

The present application provides a channel coding method, which is applied to the communication system shown in FIG. 1 . As shown in FIG. 4 , the channel coding method provided by the embodiment of the present application includes:

S400. The terminal device determines the first data according to the first channel coding information and the second channel coding information.

Wherein, the first channel coding information is used for the first channel coding of the first data; the second channel coding information is used for the second channel coding of the first data; the number of bits included in the first data is based on the first channel coding information and The second channel coding information is determined.

In a possible implementation manner, the first channel coding information includes at least one of the following items: the code rate of the first channel coding, the coding mode of the first channel coding, and the number of repetitions of the first channel coding.

The second channel coding information includes at least one of the following items: the code rate of the second channel coding, the coding mode of the second channel coding, and the number of repetitions of the second channel coding.

In an example, the first data is a transport block determined by the terminal device. The process for the terminal device to determine the transport block is as follows:

The terminal device determines, according to the first channel coding information and the second channel coding information, the size of the transport block in which the terminal device can perform channel coding. After determining the size of the transport block, the terminal device may generate one or more transport blocks according to the data to be sent and the size of the transport block.

Optionally, the size of each transport block in the one or more transport blocks is equal to the size of the transport block capable of channel coding by the terminal device.

S401. The terminal device performs channel coding on the first data according to the first channel coding information and the second channel coding information.

Specifically, the terminal device performs the first channel coding on the first data according to the first channel coding information. After that, the terminal device performs second channel coding on the first data according to the second channel coding information.

Based on the above technical solutions, the technical solutions adopted in the present application can determine the first data (eg, the first transport block) according to the first channel coding information and the second channel coding information. In this way, the first data determined by the terminal device can be well matched with the first channel coding and the second channel coding. The terminal device can perform concatenated coding on the first data according to the first channel coding and the second channel coding, so as to improve the transmission performance of data transmission.

The channel coding method provided by the embodiment of the present application can be applied to an uplink transmission scenario (referred to as scenario a) and a downlink transmission scenario (referred to as scenario b).

Hereinafter, the above scenario a and scenario b will be described in detail by taking the first data as the first transport block as an example.

Scenario a, uplink transmission scenario

As shown in FIG. 5 , in scenario a, the channel coding method provided by the embodiment of the present application may be specifically implemented by the following S500-S514.

S500. The terminal device sends second indication information to the network device. Correspondingly, the network device receives the second indication information from the terminal device.

The second indication information is used to indicate that the terminal device supports concatenated coding.

In a possible implementation manner, the second indication information may be carried in at least one of the following items: downlink control information (uplink control information, UCI), uplink physical shared channel (Physical Uplink Shared Channel.PUSCH), MAC-CE message.

S501. The network device sends third indication information to the terminal device. Correspondingly, the terminal device receives the third indication information from the network device.

The third indication information is used to indicate that the network device supports concatenated decoding.

That is to say, the network device supports the first decoding of the transport block by using the decoding method corresponding to the second channel coding, and then uses the decoding method corresponding to the first channel coding to perform the second decoding on the transport block. code decoding method.

In a possible implementation manner, the third indication information may be carried in at least one of the following items: system information, or RRC message, MAC-CE, downlink control information (downlink control information, DCI).

In another possible implementation manner, the third indication information may be indirectly indicated through other information sent by the network device to the terminal device.

For example, the third indication information indicates at least one item of the first channel coding information and the second channel coding information sent by the network device to the terminal device.

S502. The terminal device sends fourth indication information to the network device. Correspondingly, the network device receives the fourth indication information from the terminal device.

The fourth indication information is used to indicate the auxiliary information of the terminal equipment, and is used to assist the base station to schedule the terminal equipment to use.

It should be noted that S502 is an optional step, and in the actual execution process, the terminal device and the network device may not execute S502, but directly execute S503.

In a possible implementation manner, the fourth indication information includes at least one of the following: power headroom (Power headroom, PHR), reference signal received power (reference signal received power, RSRP), reference signal received quality (reference signal received quality) , RSRQ), rank (rank indicator, RI) information, channel quality indicator information (channel quality indicator, CQI), buffer status report (buffer status report, BSR).

In an example, the terminal device reports the PHR to the network device, so that the network device determines whether to use concatenated coding according to the PHR, and further schedules corresponding transmission resources and indication information to the terminal device according to whether to use the concatenated coding.

When the PHR is less than or equal to the first preset threshold value, the terminal device can improve the transmission performance of the terminal device for transmitting uplink data by increasing the transmit power.

Therefore, when the PHR reported by the terminal device is less than or equal to the first preset threshold value, the network device instructs the terminal device not to perform channel coding on the uplink data in the manner of concatenated coding. When the PHR reported by the terminal device is greater than the first preset threshold value, the terminal device is instructed to perform channel coding on the uplink data in a concatenated coding manner, so as to improve the transmission performance of the terminal device for transmitting the uplink data.

In another example, the terminal device reports parameters such as RSRP and/or RSRQ to the network device. The network device determines the quality of the communication link between the terminal device and the network device according to RSRP and/or RSRQ. When the quality of the communication link between the network device and the terminal device is relatively high, the terminal device does not need to perform channel coding on the uplink data in the manner of concatenated coding. When the quality of the communication link between the network device and the terminal device is low, the terminal device needs to perform channel coding on the uplink data in a concatenated coding manner.

Therefore, when the value of RSRP is greater than the second preset threshold and/or the RSRQ is greater than the third preset threshold, the network device instructs the terminal device not to perform channel coding on the uplink data in the manner of concatenated coding. When the value of RSRP is less than or equal to the second preset threshold and/or the value of RSRQ is less than or equal to the third preset threshold, the network device instructs the terminal device to perform channel coding on the uplink data by means of concatenated coding, so as to improve the transmission rate of the terminal device. Transmission performance of upstream data.

Similar network equipment can also determine the transmission performance of uplink data transmission between the terminal equipment and the network equipment according to information such as RI, CQI or BSR.

When the transmission performance is high, the network device instructs the terminal device not to perform channel coding on the uplink data in the manner of concatenated coding, so as to reduce the complexity of the terminal device in transmitting the uplink data.

When the transmission performance is low, the network device instructs the terminal device to perform channel coding on the uplink data by means of concatenated coding, so as to improve the transmission performance of the terminal device to transmit the uplink data.

S503. The network device sends the first indication information to the terminal device. Correspondingly, the terminal device receives the first indication information from the network device.

The first indication information is used to indicate at least one item of the first channel coding information and the second channel coding information. The first indication information is carried in any one of the following: radio resource control RRC, medium access control-control element MAC-CE, downlink control information DCI.

In a possible implementation manner, the first indication information is scheduling information sent by the network device to the terminal device, or the first indication information is part of the scheduling information sent by the network device to the terminal device.

The scheduling information includes at least one of the following: enabling information of concatenated coding, concatenated coding information, frequency resource scheduling, time resource scheduling, MCS, and repetition times.

The concatenated encoding enable information is used to indicate that the network device supports the concatenated encoding function.

The concatenated coding information includes first channel coding information and second channel coding information.

The frequency resource scheduling is used to indicate the frequency resources scheduled by the network device for the terminal device.

The time resource scheduling is used to indicate the time resources scheduled by the network device for the terminal device.

It should be noted that, in this embodiment of the present application, the network device may indirectly indicate whether the terminal device adopts the concatenated coding function through other parameters in the scheduling information.

In an example, the network device indicates, through the value of the MCS, whether the terminal device performs channel coding on the uplink data by means of concatenated coding.

Specifically, if the value of MCS in the scheduling information sent by the network device to the terminal device is less than or equal to the preset MCS value, it indicates that the network device instructs the terminal device to perform channel coding on uplink data in a concatenated coding manner.

If the value of the MCS in the scheduling information sent by the network device to the terminal device is greater than the preset MCS value, it indicates that the network device instructs the terminal device not to perform channel coding on uplink data in the manner of concatenated coding.

In another example, the network device indicates whether the terminal device performs channel coding on the uplink data by means of the number of repetitions.

Specifically, if the number of repetitions in the scheduling information sent by the network device to the terminal device is greater than or equal to the preset number of times, it indicates that the network device instructs the terminal device to perform channel coding on uplink data in a concatenated coding manner.

If the number of repetitions in the scheduling information sent by the network device to the terminal device is less than the preset number of times, it indicates that the network device instructs the terminal device not to perform channel coding on uplink data in the manner of concatenated coding.

In another example, the network device indicates, through frequency resources, whether the terminal device performs channel coding on the uplink data in the manner of concatenated coding.

If the frequency resource sent by the network device to the terminal device is greater than or equal to the preset frequency resource threshold value, it indicates that the network device instructs the terminal device to perform channel coding on the uplink data by means of concatenated coding.

If the frequency resource sent by the network device to the terminal device is less than the preset frequency resource threshold value, it indicates that the network device instructs the terminal device not to perform channel coding on uplink data in the manner of concatenated coding.

In another example, the network device performs channel coding on the uplink data according to whether the time resource terminal device adopts a concatenated coding manner.

If the time resource sent by the network device to the terminal device is greater than or equal to the preset time resource threshold, it indicates that the network device instructs the terminal device to perform channel coding on the uplink data in the manner of concatenated coding.

If the time resource sent by the network device to the terminal device is less than the preset time resource threshold value, it means that the network device instructs the terminal device not to perform channel coding on the uplink data by means of concatenated coding.

It should be noted that, when the terminal device determines whether to perform concatenated encoding, the terminal device may determine whether the network device supports concatenated encoding according to the concatenated encoding enable information sent by the network device. After the terminal device determines that the network device supports concatenated coding, the terminal device determines, according to the scheduling information sent by the network device, whether to use the concatenated coding mode to perform channel coding on uplink data.

S504. The terminal device determines the first encoding information and the second encoding information according to the first indication information.

It should be pointed out that the first channel coding can be one or more of the following: cyclic codes, Hamming codes, repetition codes, polynomial codes (such as Bose–Chaudhuri–Hocquenghem, BCH) code), Reed-Solomon code, algebraic geometric code, Reed-Muller code, complete code, Golay code, tail biting convolutional code (TBCC, tail bit convolutional code), Turbo code, low density parity check code ( low-density parity-check, LDPC), Polar codes, product codes.

The second channel coding may be the channel coding currently adopted in 3GPP. For example, LDPC or Polar codes.

S505. The terminal device determines the size of the first transport block according to the first encoding information and the second encoding information.

The size of the first transport block refers to the number of bits included in the first transport block.

In a possible implementation manner, the size of the first data is determined according to at least one of the following: the code rate R ₁ of the first channel coding, the code rate R ₂ of the second channel coding, the first The total number of bits G ₂ after the data is channel-coded, and the scale factor S of the first data.

As an example, the size of the first transport block may satisfy the following formula 4:

TBS'=R ₁ ·R ₂ ·G ₂ Equation 4

Wherein, TBS' is the size of the first transport block or TBS' is the unquantized intermediate variable N _info involved in the above S301.

In the case where TBS' is the size of the first transport block, the terminal device can directly determine the size TBS of the first transport block according to formula 4.

In the case where TBS' is the unquantized intermediate variable N _info involved in the above S301, the terminal device first determines the size of TBS' according to formula 4, and then the terminal device determines the size of TBS' according to the method described in S301, and the value of TBS' Determine the size TBS of the first transport block.

R ₁ is the code rate of the first channel coding; R ₂ is the code rate of the second channel coding; G ₂ is the total number of bits after the first transmission block is channel-coded.

It should be pointed out that since the value of TBS' determined according to the above formula 4 may not be an integer, the value of TBS' required by the terminal device needs to be an integer. Therefore, the terminal device can further round up formula 4 to determine the value of TBS'.

For example, the terminal device determines

Alternatively, the end device determines

Alternatively, the terminal device determines

Alternatively, the terminal device determines

where n can be a non-negative integer. For example n=1; another example n=2; another example n=3.

In another example, the size of the first transport block may satisfy the following formula 5:

TBS′=R ₁ ·R ₂ ·G ₂ ·S Equation 5

It should be pointed out that since the value of TBS determined according to the above formula 4 may not be an integer, the value of TBS' required by the terminal equipment needs to be an integer. Therefore, the terminal device can further round up formula 4 to determine the value of TBS'.

For example, the terminal device determines

Alternatively, the end device determines

Alternatively, the terminal device determines

Alternatively, the terminal device determines

The following describes the code rate of the first channel coding:

The first channel coding information sent by the network device to the terminal device may include the code rate of the first channel coding. Or, when the first channel coding is repetition coding, the first channel coding information includes the repetition times of the first channel coding, but does not include the code rate of the first channel coding. The terminal device may determine the code rate of the first channel encoding according to the repetition times of the first channel encoding.

Specifically: when the repetition times m of the first channel coding is less than or equal to the preset threshold Z, the value of the code rate R ₁ of the first channel coding is

When the number of repetitions m is greater than the preset threshold Z, the value of the code rate R ₁ of the first channel coding is

In an example, the preset threshold value Z is 4.

In another possible implementation manner, the terminal device may further determine the number of repetitions of the second channel coding according to the number of repetitions of the first channel coding.

An example, the number of repetitions of the second channel coding is the number of repetitions of the first channel coding.

For another example, when the number of repetitions of the first channel coding is m, the number of repetitions of the second channel coding is

In another example, when the number of repetitions of the first channel coding is m, the number of repetitions of the second channel coding is

Where x is the number of repeated transmissions determined according to the indication information.

In another possible implementation manner, the first channel coding is repetition coding, and the first transport block (or the second transport block, or the first code block) may be repeated a non-integer number of times.

For example, the length of the first transport block (or the second transport block, or the first code block) is B bits, and the number of non-integer repetitions is r+α, where r is a positive integer, and α is a positive integer not greater than 1 number. Then the length of a second code block after the first channel coding is (r+α)×B. Specifically, for example, r=1, α=0.5, or r=2, α=0.3.

The following describes the code rate of the second channel coding:

The code rate of the second channel coding can be determined by the MCS indication.

The following describes the total number of bits G ₂ after channel coding the first transport block:

The terminal device can adjust the modulation order of the first transport block according to the

In the kth RB (or RBG), the number of scheduled subcarriers (number of resource elements) N′ _RE,k and the number of layers v _k of the kth RB (or RBG) scheduled for transmission determine the first transport block The value of the total number of bits G after channel coding.

Specifically, the total number of bits G ₂ after the channel coding of the first transport block satisfies the following formula 6:

Among them, N′ _RE,k satisfies the following formula 7:

in,

is the number of subcarriers (number of resource elements) in one RB (or RBG),

is a fixed value, for example

Indicates the number of OFDM symbols scheduled for the kth RB (or RBG) in a slot;

Indicates the amount of overhead of the kth RB (or RBG) in one slot, eg, the amount of overhead used for CSI-RS transmission.

Based on the above formula 6 and formula 7, the total number of bits G ₂ after the channel coding of the first transport block satisfies the following formula 8:

It should be pointed out that the above parameters:

Parameters such as v _k , etc. may be indicated by any one of the signaling messages in RRC, MAC-CE, and DCI, or indicated jointly by multiple signaling messages in RRC, MAC-CE, and DCI. This application does not limit this.

S506. The terminal device generates a first transport block according to the size of the first transport block and the data to be transmitted.

S507. The terminal device performs a first CRC on the first transport block to generate a second transport block.

For the process of performing the first CRC on the first transport block by the terminal device, reference may be made to the process of performing the CRC by the terminal device in the prior art, which will not be repeated in this application.

S508: The terminal device performs block processing and second CRC on the second transport block to determine a plurality of first code blocks.

In a possible implementation manner, the number C of the first code blocks is determined according to at least one of the following: the code rate R ₁ of the first channel coding, the number of bits B of the second data, the code block cyclic redundancy check The number of bits L (ie, L is the length of the second CRC), and the number of bits K _cb included in the largest code block corresponding to the second channel coding.

As an example, the number C of the first code block can satisfy the following formula 9:

In another example, the number C of the first code blocks may satisfy the following formula 10:

Wherein, B is the number of bits of the second data, L is the number of cyclic redundancy check bits of the code block, and K _cb is the number of bits included in the largest code block corresponding to the second channel coding. The value of K _cb can be 8448. Alternatively, K _cb may also have other values, which are not limited in this application.

In another possible implementation manner, the number N of bits included in the first code block is determined according to at least one of the following: the code rate R ₁ of the first channel coding, the number of bits B of the second data, the cyclic redundancy of the code block. The number L of residual check bits, and the number C of the first code block.

An example, the number of bits N included in the first code block can satisfy the following formula 11:

In another example, the number of bits N included in the first code block can satisfy the following formula 12:

In another possible implementation manner, the number C of the first code blocks is determined according to at least one of the following: the number of bits B of the second data, L is the bit length of the second CRC, and K' _cb is the first The number of bits included in the largest code block corresponding to channel coding.

As an example, the number C of the first code block can satisfy the following formula 13:

The number N of bits included in the first code block is determined according to at least one of the following: the number B of bits of the second data, the number L of the CRC bits of the code block, and the number C of the first code block.

In another example, the number of bits N included in the first code block can satisfy the following formula 14:

Alternatively, the number of bits N included in the first code block may satisfy the following formula 15:

S509: The terminal device performs the first channel coding on the multiple first code blocks, respectively, to generate multiple second code blocks.

In a possible implementation manner, the number C ₂ of the second code block is the same as the number of the first code block, that is, C ₂ =C.

In another possible implementation manner, the number C ₂ of the second code blocks is determined according to at least one of the following: the number C of the first code blocks, the code rate R ₂ of the second channel coding, the first code block The number of included bits N, the bit length L ₃ of the third CRC, and the number of bits K _cb included in the largest code block corresponding to the second channel coding.

As an example, the number C ₂ of the second code block can satisfy the following formula 16:

Among them, C is the number of the first code block, N is the number of bits included in the first code block, L is the bit length of the second CRC, K' _cb is the number of bits included in the largest code block corresponding to the second channel coding, L ₃ is the bit length of the third CRC.

In another possible implementation manner, the number of bits N ₂ included in the second code block is determined according to at least one of the following: the code rate R ₁ of the first channel coding, the number of bits B of the second data, and the cyclic redundancy of the code block. The number L of check bits, the number N of first code blocks, and the number C of first code blocks.

An example, the number of bits N ₂ included in the second code block can satisfy the following formula 17:

Alternatively, the number of bits N included in the second code block may satisfy the following formula 18:

In another example, the number of bits N ₂ included in the second code block can satisfy the following formula 19:

Alternatively, the number of bits N ₂ included in the second code block may satisfy the following formula 20:

In another example, the number of bits N ₂ included in the second code block can satisfy the following formula 21:

Alternatively, the number of bits N ₂ included in the second code block may satisfy the following formula 22:

Wherein, B is the number of bits of the second data, and C ₂ is the number of the second code block.

It should be noted that the rounding operations involved in the embodiments of the present application (for example, rounding up

round down

Arbitrary substitutions can be made between rounding (round(·)). For example, round up

can be replaced with round down

Or replace with round( )). This application does not limit this.

In a possible implementation manner, one second code block corresponds to K first code blocks. Specifically, for K first code blocks, each first code block in the K code blocks obtains a bit block after the first channel coding, and channel coding is performed on the K first code blocks respectively, K bit blocks are obtained, and the K bit blocks constitute a second code block, where K is an integer. For example, K=1; for another example, K=2, 4, 6, 8, or 10. Optionally, the terminal device performs a third CRC on the K bit blocks to obtain a second code block.

In another possible implementation manner, K′ second code blocks correspond to one first code block. Specifically, the terminal device obtains a bit block (length N) after performing the first channel coding on a first code block, and the terminal device splits the bit block into K' bit blocks (for example, the length is N/ K', or

or

K' bit blocks). The terminal device performs a third CRC on the K' bit blocks after splitting, respectively, to determine K' second code blocks.

In another possible implementation manner, C ₂ second code blocks correspond to C first code blocks after first channel coding, that is, a non-integer number of first code blocks corresponds to a second code block (or a non-integer number of first code blocks corresponds to a second code block). The second code block corresponds to a first code block). Optionally, the terminal device performs a third CRC on a non-integer number of first code blocks corresponding to one second code block to obtain one second code block.

In another possible implementation manner, the C first code blocks after the first channel coding are respectively mapped to C ₂ second code blocks. That is, each second code block includes the first code blocks from C (or more) first channel encodings. Optionally, the second code block undergoes a third CRC.

Optionally, the third CRC is different from the first CRC in S507; and/or, the third CRC is different from the second CRC in S508.

It should be pointed out that the terminal device may also perform interleaving on the first code block after the first channel coding to determine the second code block. Whether the terminal device interleaves the first code block after the first channel coding is an optional process, which is not limited in this application.

S510: The terminal device performs the second channel coding on the multiple second code blocks respectively to generate multiple third code blocks.

S511. The terminal device performs hybrid automatic repeat request (Hybrid Automatic Repeat reQuest, HARQ) processing on the third code block, rate matching, and scrambling.

S512 , the terminal device performs modulation and layer mapping on the third code block after the HARQ processing, rate matching and scrambled code.

S513: The terminal device performs time-frequency resource mapping on the third code block after modulation and layer mapping.

It should be pointed out that, if the terminal device needs to perform repetitions processing on the data, the terminal device may repeatedly perform the rate matching, scrambling, and S512 and S513 in the above S511 multiple times. This application will not repeat this.

S514, the terminal device sends the processed data to the network device.

The processed data includes one or more third code blocks after time-frequency resource mapping is performed.

It should be pointed out that the above description is performed after the terminal equipment performs block processing on the transport block by using the first channel coding and the second channel coding. In the actual process, the first channel coding may also occur before the terminal device performs code block division and performs the second CRC (referred to as case 1); Before the first CRC (denoted as case 2).

Cases 1 and 2 are described in detail as follows:

Case 1. The first channel coding occurs before the code block division of the terminal equipment.

As shown in FIG. 6 , in this case, the channel coding method provided by the embodiment of the present application may be specifically implemented by the following S600-S614. The details are as follows:

S600. The terminal device sends second indication information to the network device. Correspondingly, the network device receives the second indication information from the terminal device.

Wherein, the implementation manner of S600 is similar to the above-mentioned S500, and details are not repeated here.

S601. The network device sends third indication information to the terminal device. Correspondingly, the terminal device receives the third indication information from the network device.

The implementation manner of S601 is similar to the above-mentioned S501, and details are not repeated here.

S602. The terminal device sends fourth indication information to the network device. Correspondingly, the network device receives the fourth indication information from the terminal device.

Wherein, the implementation manner of S602 is similar to the above-mentioned S502, and details are not repeated here.

S603. The network device sends the first indication information to the terminal device. Correspondingly, the terminal device receives the first indication information from the network device.

The implementation manner of S603 is similar to the above-mentioned S503, which will not be repeated here.

S604. The terminal device determines the first encoding information and the second encoding information according to the first indication information.

The implementation manner of S604 is similar to the above-mentioned S504, and details are not repeated here.

S605. The terminal device determines the size of the first transport block according to the first encoding information and the second encoding information.

The implementation of S605 is similar to the above-mentioned S505, and details are not repeated here.

S606. The terminal device generates a first transmission block according to the size of the first transmission block and the data to be transmitted.

The implementation of S606 is similar to the above-mentioned S506, and details are not repeated here.

S607. The terminal device performs a first CRC on the first transport block to generate a second transport block.

Wherein, the implementation of S607 is similar to the above-mentioned S507, and details are not repeated here.

S608: The terminal device performs the first channel coding on the second transport block to generate a third transport block.

Wherein, the implementation of S608 is similar to the above-mentioned S509, which will not be repeated here.

S609: The terminal device performs block processing on the third transport block and performs a second CRC to determine multiple fourth code blocks.

Wherein, the implementation manner of S609 is similar to the above-mentioned S508, and details are not repeated here.

S610. The terminal device performs the second channel coding on the multiple fourth code blocks to generate multiple fifth code blocks.

The implementation manner of S610 is similar to the above-mentioned S510, and details are not described herein again.

S611. The terminal device performs HARQ processing on the fifth code block, rate matching, and scrambling.

S612. The terminal device performs HARQ processing, and modulates and layer maps the fifth code block after rate matching and scrambled.

S613. The terminal device performs time-frequency resource mapping on the fifth code block after modulation and layer mapping.

S614. The terminal device sends the processed data to the network device.

The processed data includes one or more fifth code blocks after time-frequency resource mapping is performed.

Case 2. The first channel coding may also occur before the terminal device performs the first CRC on the transport block.

As shown in FIG. 7 , in this case, the channel coding method provided by the embodiment of the present application may be specifically implemented by the following S700-S714. The details are as follows:

S700. The terminal device sends second indication information to the network device. Correspondingly, the network device receives the second indication information from the terminal device.

The implementation manner of S700 is similar to the above-mentioned S500, which will not be repeated here.

S701. The network device sends third indication information to the terminal device. Correspondingly, the terminal device receives the third indication information from the network device.

The implementation of S701 is similar to the above-mentioned S501, and details are not repeated here.

S702. The terminal device sends fourth indication information to the network device. Correspondingly, the network device receives the fourth indication information from the terminal device.

Wherein, the implementation of S702 is similar to the above-mentioned S502, and details are not repeated here.

S703. The network device sends the first indication information to the terminal device. Correspondingly, the terminal device receives the first indication information from the network device.

The implementation manner of S703 is similar to the above-mentioned S503, and details are not repeated here.

S704. The terminal device determines the first encoding information and the second encoding information according to the first indication information.

The implementation manner of S704 is similar to the above-mentioned S504, which will not be repeated here.

S705. The terminal device determines the size of the first transport block according to the first encoding information and the second encoding information.

The implementation manner of S705 is similar to the above-mentioned S505, which will not be repeated here.

S706. The terminal device generates a first transmission block according to the size of the first transmission block and the data to be transmitted.

The implementation manner of S706 is similar to the above-mentioned S506, and details are not repeated here.

S707: The terminal device performs the first channel coding on the first transport block to generate a fourth transport block.

The implementation of S707 is similar to the above-mentioned S509, which will not be repeated here.

S708: The terminal device performs the first CRC on the fourth transport block to generate the fifth transport block.

Wherein, the implementation of S708 is similar to the above-mentioned S507, and details are not repeated here.

S709: The terminal device performs block processing on the fifth transport block and performs a second CRC to determine multiple sixth code blocks.

Wherein, the implementation of S709 is similar to the above-mentioned S508, which will not be repeated here.

S710. The terminal device performs the second channel coding on the multiple sixth code blocks respectively to generate multiple seventh code blocks.

The implementation manner of S710 is similar to the above-mentioned S510, and details are not repeated here.

S711. The terminal device performs HARQ processing on the seventh code block, rate matching, and scrambling.

S712. The terminal device performs modulation and layer mapping on the seventh code block after the HARQ processing, rate matching and scrambled code.

S713: The terminal device performs time-frequency resource mapping on the seventh code block after modulation and layer mapping.

S714, the terminal device sends the processed data to the network device.

The processed data includes one or more seventh code blocks after time-frequency resource mapping is performed.

Scenario b. Downlink transmission scenario

As shown in FIG. 8 , in scenario b, the channel coding method provided by the embodiment of the present application may be specifically implemented by the following S800-S814.

S800. The terminal device sends second indication information to the network device. Correspondingly, the network device receives the second indication information from the terminal device.

Wherein, the implementation of S800 is similar to the above-mentioned S500, and details are not repeated here.

S801. The network device sends third indication information to the terminal device. Correspondingly, the terminal device receives the third indication information from the network device.

Wherein, the implementation of S801 is similar to the above-mentioned S501, and details are not repeated here.

S802. The terminal device sends fourth indication information to the network device. Correspondingly, the network device receives the fourth indication information from the terminal device.

Wherein, the implementation of S802 is similar to the above-mentioned S502, and details are not repeated here.

S803. The network device sends the first indication information to the terminal device. Correspondingly, the terminal device receives the first indication information from the network device.

The implementation manner of S803 is similar to the above-mentioned S503, which will not be repeated here.

S804. The network device determines the first encoding information and the second encoding information.

The implementation of S804 is similar to the above-mentioned S504, and details are not repeated here.

S805. The network device determines the size of the sixth transport block according to the first encoding information and the second encoding information.

Wherein, the implementation of S805 is similar to the above-mentioned S505, and details are not repeated here.

S806. The network device generates a seventh transmission block according to the size of the sixth transmission block and the data to be transmitted.

The implementation of S806 is similar to the above-mentioned S506, and details are not repeated here.

S807. The network device performs the first CRC on the seventh transport block to generate the eighth transport block.

Wherein, the implementation of S807 is similar to the above-mentioned S507, and details are not repeated here.

S808: The terminal device performs block processing on the eighth transmission block and performs a second CRC to determine multiple eighth code blocks.

Wherein, the implementation of S808 is similar to the above-mentioned S508, and details are not repeated here.

S809, the terminal device performs the first channel coding on the eighth code block to generate the ninth code block.

The implementation manner of S809 is similar to the above-mentioned S509, which will not be repeated here.

S810. The terminal device performs the second channel coding on the multiple ninth code blocks respectively to generate multiple tenth code blocks.

Wherein, the implementation of S810 is similar to the above-mentioned S510, and details are not repeated here.

S811. The terminal device performs HARQ processing on the tenth code block, rate matching, and scrambling.

S812. The terminal device performs modulation and layer mapping on the tenth code block after the HARQ processing, rate matching and scrambling.

S813: The terminal device performs time-frequency resource mapping on the tenth code block after modulation and layer mapping.

S814, the terminal device sends the processed data to the network device.

The processed data includes one or more tenth code blocks after time-frequency resource mapping is performed.

It should be pointed out that the above description is performed after the network device performs block processing on the transport block by using the first channel coding and the second channel coding. In the actual process, the first channel coding may also occur before the network device performs code block division and performs the second CRC; or, the first channel coding may also occur before the terminal device performs the first CRC on the first transport block For a specific implementation manner, reference may be made to Case 1 and Case 2 in scenario a, which will not be repeated in this application.

It should be pointed out that, in the downlink transmission scenario of scenario b, the time sequence at which the network device executes S803 can be adjusted according to actual requirements. For example, the network device may execute S803 after S814, or the network device may execute S803 and S814 at the same time, which is not limited in this application.

Hereinafter, the channel coding method provided by the embodiment of the present application is described in detail by taking the concatenated coding of DCI as an example:

Various DCI formats are defined in NR, for example, DCI format 0-0/0-1/1-0/1-1. Wherein, DCI format 0 (eg, 0-0 and 0-1) is used for scheduling uplink transmission, and format 1 (eg, 1-0 and 1-1) is used for scheduling downlink transmission.

In addition, according to different transmission physical channels, the DCI can be further scrambled by using a radio network temporary identifer (RNTI).

For example, the DCI corresponding to the physical channel transmitting system information (SI) is scrambled by the SI-RNTI.

The DCI corresponding to the physical channel transmitting paging information is scrambled by the P-RNTI.

The DCI corresponding to the physical channel transmitting random access (RA) message 2 is scrambled by RA-RNTI.

The DCI corresponding to the physical channel transmitting random access message 3 or message 4 is scrambled by TC-RNTI (temporary cell RNTI).

The DCI transmitting the downlink physical control channel command PDCCH (physical downlink control channel) order is scrambled by C-RNTI.

The DCI contains one or more of the fields shown in Table 2 below:

Table 2

It should be noted that, for each field shown in Table 2, for a field whose corresponding occupied length includes 0 bits, if the occupied bit length of this field is 0 bits, it means that this field is not included in the DCI.

For a field with a corresponding occupied length greater than 0 bits, the field may not be included in some specific DCIs.

Generally, in order to facilitate detection by the base station and the terminal, the lengths of the DCIs are usually aligned. That is, the DCI sizes used to schedule transmissions on different physical channels are different. Among them, the frequency domain resource assignment field is a parameter that determines its Payload size.

Since the actual loads of the corresponding DCIs during transmission on different physical channels are not the same, in order to align the format, in addition to the bits used to carry the actual information, some bits in the DCI will not carry the actual information. These bits that do not carry actual information are usually reserved bits.

For example, under the 66RB bandwidth, PDCCH order, paging message, system message, and message 2 may have 10, 6, 15, and 16-bit length fields reserved respectively. In existing implementations, the reserved bits are usually fixed to a certain state, for example, fixed to 0 (that is, the value of the reserved bits is fixed to 0).

In the prior art, the reserved bits have little effect on the information transmission of the DCI, and also cannot play a role in the transmission performance of the DCI.

Based on the concatenated coding scheme provided by the embodiment of the present application, the DCI can be channel-coded by means of repeated coding first. The DCI is channel-coded by using the coding method of the Polar code, thereby realizing concatenated coding.

As shown in FIG. 9 , the process of concatenating the DCI by the network device includes the following S900-S904.

S900, the network device performs the first channel coding on the DCI.

In a possible implementation manner, the first channel coding is repetition coding.

The DCI is a DCI with a total bit length of Z, and the Z bits of the DCI include X reserved bits and Y valid information bits in the Z bits, and Z=X+Y.

It should be pointed out that, in an optional implementation manner, the total bit length Z of the DCI may be determined according to the method of determining the size of the first data (transmission block) described in the above-mentioned embodiments of the present application, here No longer.

The process of repeatedly encoding this DCI is as follows:

a. Repeat the Y valid fields in the DCI to obtain K bits.

b. Add the K bits to the X reserved bits to obtain the composition of the new bit field as [Y, K, X-K]. Among them, K is a positive integer, and X≥K.

That is to say, the DCI after repetition coding includes Y valid information bits, repetition bits of K valid information bits, and X-K reserved bits.

Specifically, when the DCI is repeatedly encoded, K bits in all or part of the resource valid fields (for example, any one or more fields in the above Table 2) in the Y valid fields in the DCI may be added to the Among the above X bits, K is less than or equal to the reserved bit length X. The above-mentioned X, Y, Z, and K are all positive integers.

Optionally, when K is greater than Y, the Y bits are repeated until K bits are obtained. The new DCI bit field composition determined according to this method is [Y, K, X-K], that is, Y valid information bits, K repetition bits of valid information, and X-K reserved bits.

It should be pointed out that the positions of the above K bits, or the contents of the K bits, can be flexibly determined according to practical applications.

One example, the K bits are immediately followed by the Y valid information bits.

In another example, the K bits are located in the last K bits of the Z bits in the DCI.

Yet another example, wherein the K bits are the top K of the Y bits.

Yet another example, wherein the K bits are the last K of the Y bits.

In another example, the K bits correspond to one or more repetitions of a partial field in the valid DCI field (eg, any one or more fields in the above Table 2).

According to the above method, the length of the DCI after repeated coding is exactly the same as that of the existing DCI, and the valid information bit field and position are exactly the same as the existing DCI. The terminal device can detect the DCI according to the existing method, and determine Information in DCI. At the same time, the network device repeats the K valid bits by means of repeated transmission, which can further reduce the bit error rate of the K valid bits, thereby improving the transmission performance of transmitting DCI.

Optionally, the K bits are a mapping of Y bits, where the mapping relationship is predefined. For example, take a Hamming code map whose generator matrix is G, where the dimension of G can be K×Y.

Alternatively, some fields in the valid DCI field (for example, any one or more fields in Table 2 above) may be repeated multiple times in succession, and the total bit length of the DCI remains unchanged (still Z) after the repetition.

For example, repeat the MCS field in it.

For another example, the frequency domain resource allocation field is repeated.

For another example, the time domain resource allocation field is repeated.

S901, the network device performs CRC on the DCI after the first channel coding.

S902, the network device performs RNTI scrambling on the DCI after the CRC.

S903, the network device performs second channel coding on the DCI scrambled by the RNTI.

S904, the network device sends the second channel-coded DCI to the terminal device. Correspondingly, the terminal device receives the DCI from the network device.

Wherein, the second channel coding may be a coding manner such as LDPC or Polar code, and reference may be made to the prior art for a specific implementation manner, which will not be described in detail in this application.

The foregoing mainly introduces the solutions of the embodiments of the present application from the perspective of interaction between various network elements. It can be understood that each network element, for example, a terminal device and a network device, includes at least one of a hardware structure and a software module corresponding to executing each function in order to implement the above-mentioned functions. Those skilled in the art should easily realize that the present application can be implemented in hardware or a combination of hardware and computer software with the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

In this embodiment of the present application, the network device and the terminal device can be divided into functional units according to the foregoing method examples. For example, each functional unit can be divided corresponding to each function, or two or more functions can be integrated into one processing unit. The above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units. It should be noted that the division of units in the embodiments of the present application is illustrative, and is only a logical function division, and other division methods may be used in actual implementation.

In the case of using an integrated unit, FIG. 10 shows a possible schematic structural diagram of the communication device (referred to as the communication device 100 ) involved in the above embodiment, and the communication device 100 includes a processing unit 1001 and a communication unit 1002 , and may also include a storage unit 1003 . The schematic structural diagram shown in FIG. 10 may be used to illustrate the structures of the network device and the terminal device involved in the foregoing embodiment.

When the schematic structural diagram shown in FIG. 10 is used to illustrate the structure of the terminal equipment involved in the above embodiment, the processing unit 1001 is used to control and manage the actions of the terminal equipment, for example, to control the terminal equipment to perform S201- S206, S301-S308 in Fig. 3, S400 and S401 in Fig. 4, S500-S514 in Fig. 5, S600-S614 in Fig. 6, S700-S714 in Fig. 7, S800-S803 in Fig. 8, and actions performed by the terminal device in S814, S904 in FIG. 9, and/or other processes described in the embodiments of this application. The processing unit 1001 may communicate with other network entities through the communication unit 1002, for example, with the network device shown in FIG. 1 . The storage unit 1003 is used to store program codes and data of the terminal device.

When the schematic structural diagram shown in FIG. 10 is used to illustrate the structure of the terminal equipment involved in the foregoing embodiments, the communication apparatus 100 may be a terminal equipment, or may be a chip in the terminal equipment.

When the schematic structural diagram shown in FIG. 10 is used to illustrate the structure of the network device involved in the above embodiment, the processing unit 1001 is used to control and manage the actions of the network device, for example, control the network device to perform S206, S308 in FIG. 3 , S500-S503 and S514 in FIG. 5 , S600-S603 and S614 in FIG. 6 , S700-S703 and S714 in FIG. 7 , S800-S814 in FIG. S900-S904, and/or actions performed by the terminal device in other processes described in the embodiments of this application. The processing unit 1001 can communicate with other network entities through the communication unit 1002, for example, with the terminal device shown in FIG. 1 . The storage unit 1003 is used for storing program codes and data of the network device.

When the schematic structural diagram shown in FIG. 10 is used to illustrate the structure of the network device involved in the foregoing embodiment, the communication apparatus 100 may be a network device or a chip in the network device.

Wherein, when the communication device 100 is a terminal device or a network device, the processing unit 1001 may be a processor or a controller, and the communication unit 1002 may be a communication interface, a transceiver, a transceiver, a transceiver circuit, a transceiver, and the like. Among them, the communication interface is a general term, which may include one or more interfaces. The storage unit 1003 may be a memory. When the communication apparatus 100 is a chip in a terminal device or a network device, the processing unit 1001 may be a processor or a controller, and the communication unit 1002 may be an input interface and/or an output interface, pins or circuits. The storage unit 1003 may be a storage unit (for example, a register, a cache, etc.) in the chip, or a storage unit (for example, a read-only memory, ROM for short) located outside the chip in a terminal device or a network device. ), random access memory (random access memory, RAM for short), etc.).

The communication unit may also be referred to as a transceiver unit. The antenna and control circuit with the transceiver function in the communication device 100 may be regarded as the communication unit 1002 of the communication device 100 , and the processor with the processing function may be regarded as the processing unit 1001 of the communication device 100 . Optionally, the device in the communication unit 1002 for implementing the receiving function may be regarded as a receiving unit, the receiving unit is used to perform the receiving steps in the embodiments of the present application, and the receiving unit may be a receiver, a receiver, a receiving circuit, or the like.

The integrated unit in FIG. 10 may be stored in a computer-readable storage medium if it is implemented in the form of software functional modules and sold or used as a stand-alone product. Based on this understanding, the technical solutions of the embodiments of the present application can be embodied in the form of software products in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, and the computer software products are stored in a storage The medium includes several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the methods described in the various embodiments of the present application. Storage media for storing computer software products include: U disk, removable hard disk, read-only memory, random access memory, magnetic disk or optical disk and other media that can store program codes.

The units in FIG. 10 may also be referred to as modules, eg, a processing unit may be referred to as a processing module.

An embodiment of the present application also provides a schematic diagram of the hardware structure of a communication device (referred to as communication device 110 ). Referring to FIG. 11 or FIG. 12 , the communication device 110 includes a processor 1101 , and optionally, also includes a connection with the processor 1101 memory 1102.

In a first possible implementation manner, referring to FIG. 11 , the communication device 110 further includes a transceiver 1103 . The processor 1101, the memory 1102 and the transceiver 1103 are connected by a bus. The transceiver 1103 is used to communicate with other devices or communication networks. Optionally, the transceiver 1103 may include a transmitter and a receiver. The device in the transceiver 1103 for implementing the receiving function may be regarded as a receiver, and the receiver is configured to perform the receiving steps in the embodiments of the present application. The device in the transceiver 1103 for implementing the sending function may be regarded as a transmitter, and the transmitter is used to perform the sending step in the embodiment of the present application.

Based on the first possible implementation manner, the schematic structural diagram shown in FIG. 11 may be used to illustrate the structure of the terminal device or the network device involved in the foregoing embodiment.

When the schematic structural diagram shown in FIG. 11 is used to illustrate the structure of the terminal device involved in the above embodiment, the processor 1101 is used to control and manage the actions of the terminal device, for example, the processor 1101 is used to support the terminal device to execute the diagram S201-S206 in Fig. 2, S301-S308 in Fig. 3, S400 and S401 in Fig. 4, S500-S514 in Fig. 5, S600-S614 in Fig. 6, S700-S714 in Fig. 7, S700-S714 in Fig. 8 S800-S803, and S814, S904 in FIG. 9, and/or actions performed by the terminal device in other processes described in the embodiments of this application. The processor 1101 may communicate with other network entities through the transceiver 1103, eg, with the network devices shown in FIG. 1 . The memory 1102 is used to store program codes and data of the terminal device.

When the schematic structural diagram shown in FIG. 11 is used to illustrate the structure of the network device involved in the above embodiment, the processor 1101 is used to control and manage the actions of the network device, for example, the processor 1101 is used to support the network device to execute the diagram 2, S308 in FIG. 3, S500-S503, and S514 in FIG. 5, S600-S603, and S614 in FIG. 6, S700-S703, and S714 in FIG. S814, S900-S904 in FIG. 9, and/or actions performed by the network device in other processes described in the embodiments of this application. The processor 1101 may communicate with other network entities through the transceiver 1103, for example, with the terminal device shown in FIG. 1 . The memory 1102 is used to store program codes and data of the network device.

In a second possible implementation, the processor 1101 includes a logic circuit and at least one of an input interface and an output interface. Wherein, the output interface is used for executing the sending action in the corresponding method, and the input interface is used for executing the receiving action in the corresponding method.

Based on the second possible implementation manner, see FIG. 12 . The schematic structural diagram shown in FIG. 12 may be used to illustrate the structure of the terminal device or the network device involved in the foregoing embodiment.

When the schematic structural diagram shown in FIG. 12 is used to illustrate the structure of the terminal device involved in the above embodiment, the processor 1101 is used to control and manage the actions of the terminal device, for example, the processor 1101 is used to support the terminal device to execute the diagram S201-S206 in Fig. 2, S301-S308 in Fig. 3, S400 and S401 in Fig. 4, S500-S514 in Fig. 5, S600-S614 in Fig. 6, S700-S714 in Fig. 7, S700-S714 in Fig. 8 S800-S803, and S814, S904 in FIG. 9, and/or actions performed by the terminal device in other processes described in the embodiments of this application. The processor 1101 may communicate with other network entities, eg, with the network device shown in FIG. 1 , through at least one of an input interface and an output interface. The memory 1102 is used to store program codes and data of the terminal device.

When the schematic structural diagram shown in FIG. 12 is used to illustrate the structure of the network device involved in the above embodiment, the processor 1101 is used to control and manage the actions of the network device, for example, the processor 1101 is used to support the network device to execute the diagram 2, S308 in FIG. 3, S500-S503, and S514 in FIG. 5, S600-S603, and S614 in FIG. 6, S700-S703, and S714 in FIG. S814, S900-S904 in FIG. 9, and/or actions performed by the network device in other processes described in the embodiments of this application. The processor 1101 may communicate with other network entities through at least one of the input interface and the output interface, for example, with the terminal device shown in FIG. 1 . The memory 1102 is used to store program codes and data of the network device.

11 and 12 may also illustrate a system chip in a network device. In this case, the actions performed by the above network device may be implemented by the system chip, and the specific actions performed may refer to the above, which will not be repeated here. 11 and 12 may also illustrate a system chip in a terminal device. In this case, the actions performed by the above-mentioned terminal device may be implemented by the system chip, and the specific actions performed may refer to the above, which will not be repeated here.

In addition, an embodiment of the present application also provides a schematic diagram of the hardware structure of a terminal device (referred to as terminal device 130 ) and a network device (referred to as network device 120 ). For details, please refer to FIG. 13 and FIG. 12 respectively. The terminal device 130 may be a terminal device.

FIG. 13 is a schematic diagram of the hardware structure of the terminal device 130 . For convenience of explanation, FIG. 13 only shows the main components of the terminal device. As shown in FIG. 13 , the terminal device 130 includes a processor, a memory, a control circuit, an antenna, and an input and output device.

The processor is mainly used to process communication protocols and communication data, control the entire terminal equipment, execute software programs, and process data of the software programs. For example, the control terminal device executes S201-S206 in FIG. 2, S301-S308 in FIG. 3, S400 and S401 in FIG. 4, S500-S514 in FIG. 5, S600-S614 in FIG. S700-S714, S800-S803 in FIG. 8, and S814, S904 in FIG. 9, and/or actions performed by the terminal device in other processes described in the embodiments of the present application.

The memory is mainly used to store software programs and data. The control circuit (also referred to as a radio frequency circuit) is mainly used for the conversion of the baseband signal and the radio frequency signal and the processing of the radio frequency signal. The control circuit together with the antenna can also be called a transceiver, which is mainly used to send and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users.

When the terminal device is powered on, the processor can read the software program in the memory, interpret and execute the instructions of the software program, and process the data of the software program. When it is necessary to send data through the antenna, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the control circuit in the control circuit. The control circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal through the antenna in the form of electromagnetic waves. send. When data is sent to the terminal device, the control circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, which converts the baseband signal into data and processes the data.

Those skilled in the art can understand that, for the convenience of description, FIG. 13 only shows one memory and a processor. In an actual terminal device, there may be multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, etc., which is not limited in this embodiment of the present application.

As an optional implementation manner, the processor may include a baseband processor and a central processing unit. The baseband processor is mainly used to process communication protocols and communication data, and the central processing unit is mainly used to control the entire terminal device, execute A software program that processes data from the software program. The processor in FIG. 13 integrates the functions of the baseband processor and the central processing unit. Those skilled in the art can understand that the baseband processor and the central processing unit may also be independent processors, interconnected by technologies such as a bus. Those skilled in the art can understand that a terminal device may include multiple baseband processors to adapt to different network standards, a terminal device may include multiple central processors to enhance its processing capability, and various components of the terminal device may be connected through various buses. The baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit can also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and communication data may be built in the processor, or may be stored in the memory in the form of a software program, and the processor executes the software program to realize the baseband processing function.

FIG. 14 is a schematic diagram of the hardware structure of the network device 140 . The network device 140 may include one or more radio frequency units, such as a remote radio unit (remote radio unit, RRU for short) 1401 and one or more baseband units (baseband unit, BBU for short) (also referred to as a digital unit (digital unit, abbreviated as BBU)) DU)) 1402.

The RRU 1401 may be referred to as a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., which may include at least one antenna 1411 and a radio frequency unit 1412 . The RRU1401 part is mainly used for the transceiver of radio frequency signals and the conversion of radio frequency signals and baseband signals. The RRU 1401 and the BBU 1402 may be physically set together, or may be physically separated, for example, distributed base stations.

The BBU1402 is the control center of the network equipment, which can also be called a processing unit, and is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, spread spectrum, and so on.

In one embodiment, the BBU 1402 may be composed of one or more boards, and the multiple boards may jointly support a wireless access network (such as an LTE network) of a single access standard, or may separately support wireless access systems of different access standards. Access network (such as LTE network, 5G network or other network). The BBU 1402 also includes a memory 1421 and a processor 1422, and the memory 1421 is used to store necessary instructions and data. The processor 1422 is used to control the network device to perform necessary actions. The memory 1421 and processor 1422 may serve one or more single boards. That is to say, the memory and processor can be provided separately on each single board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits may also be provided on each single board.

It should be understood that the network device 140 shown in FIG. 14 can perform S206 in FIG. 2 , S308 in FIG. 3 , S500-S503 and S514 in FIG. 5 , S600-S603 and S614 in FIG. 6 , and S614 in FIG. 7 . S700-S703 and S714, S800-S814 in FIG. 8, S900-S904 in FIG. 9, and/or actions performed by the network device in other processes described in the embodiments of this application. The operations, functions, or, operations and functions of each module in the network device 140 are respectively set to implement the corresponding processes in the foregoing method embodiments. For details, reference may be made to the descriptions in the foregoing method embodiments. To avoid repetition, the detailed descriptions are appropriately omitted here.

In the implementation process, each step in the method provided in this embodiment may be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software. The steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.

The processor in this application may include, but is not limited to, at least one of the following: a central processing unit (CPU), a microprocessor, a digital signal processor (DSP), a microcontroller (MCU), or Artificial intelligence processors and other types of computing devices that run software, each computing device may include one or more cores for executing software instructions to perform operations or processing. The processor can be a separate semiconductor chip, or can be integrated with other circuits into a semiconductor chip. For example, it can form a SoC (on-chip) with other circuits (such as codec circuits, hardware acceleration circuits, or various bus and interface circuits). system), or can also be integrated in the ASIC as a built-in processor of an ASIC, and the ASIC integrated with the processor can be packaged separately or can be packaged with other circuits. In addition to a core for executing software instructions for operation or processing, the processor may further include necessary hardware accelerators, such as field programmable gate array (FPGA), PLD (programmable logic device) , or a logic circuit that implements dedicated logic operations.

The memory in this embodiment of the present application may include at least one of the following types: read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access memory) , RAM) or other types of dynamic storage devices that can store information and instructions, and can also be electrically erasable programmable read-only memory (Electrically erasable programmable read-only memory, EEPROM). In some scenarios, the memory may also be compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.) , a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, without limitation.

Embodiments of the present application further provide a computer-readable storage medium, including instructions, which, when executed on a computer, cause the computer to execute any of the foregoing methods.

Embodiments of the present application also provide a computer program product containing instructions, which, when run on a computer, enables the computer to execute any of the above methods.

An embodiment of the present application further provides a communication system, including: the above-mentioned terminal device and a network device.

An embodiment of the present application further provides a chip, the chip includes a processor and an interface circuit, the interface circuit is coupled to the processor, the processor is used to run a computer program or instructions to implement the above method, and the interface circuit is used to connect with the processor. communicate with other modules outside the chip.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using a software program, it can 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 the computer program instructions are loaded and executed on the computer, all or part of the processes or functions described in the embodiments of the present application are generated. 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 (such as infrared, wireless, microwave, etc.) means to transmit to another website site, computer, server or data center. Computer-readable storage media can be any available media that can be accessed by a computer or data storage devices including one or more servers, data centers, etc., that can be integrated with the media. Useful media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVD), or semiconductor media (eg, solid state disks (SSD)), and the like.

Although the application is described herein in conjunction with various embodiments, in practicing the claimed application, those skilled in the art can understand and implement the disclosure by reviewing the drawings, the disclosure, and the appended claims Other variations of the embodiment. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that these measures cannot be combined to advantage.

Although the application has been described in conjunction with specific features and embodiments thereof, it will be apparent that various modifications and combinations can be made therein without departing from the spirit and scope of the application. Accordingly, this specification and drawings are merely exemplary illustrations of the application as defined by the appended claims, and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of this application. Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these 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 also intended to include these modifications and variations.

It should be noted that: the above are only specific implementations of the present application, but the protection scope of the present application is not limited to this, and any changes or replacements within the technical scope disclosed in the present application should be covered by the present application. within the scope of protection. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims (29)

1. A channel coding method, comprising:

   The terminal device determines the first data according to the first channel coding information and the second channel coding information; wherein, the first channel coding information is used for the first channel coding of the first data; the second channel coding information for the second channel coding of the first data; the number of bits included in the first data is determined according to the first channel coding information and the second channel coding information;

   The terminal device performs channel coding on the first data according to the first channel coding information and the second channel coding information.
2. The method according to claim 1, wherein the first channel coding information includes at least one of the following: a code rate of the first channel coding, a coding mode of the first channel coding, and the The number of repetitions of the first channel coding;

   The second channel coding information includes at least one of the following items: a code rate of the second channel coding, a coding mode of the second channel coding, and the number of repetitions of the second channel coding.
3. The method according to claim 1 or 2, wherein the size of the first data is determined according to at least one of the following: a code rate R 1 of the first channel coding, a code rate R ₁ of the second channel coding The code rate R ₂ , the total number of bits G ₂ of the first data after channel coding, and the scale factor S of the first data.
4. The method according to claim 3, wherein the size TBS' of the first data is determined according to the following formula:

   TBS'=R ₁ ·R ₂ ·G ₂

   Or, the size TBS' of the first data is determined according to the following formula:

   TBS'=R ₁ ·R ₂ ·G ₂ ·S.
5. The method according to any one of claims 1-4, wherein the method further comprises:

   The terminal device receives first indication information from a network device; the first indication information is used to indicate at least one of the first channel coding information and the second channel coding information.
6. The method according to claim 5, wherein the first indication information is carried in any one of the following: radio resource control RRC, medium access control-control element MAC-CE, downlink control information DCI.
7. The method according to any one of claims 1-6, wherein the terminal device performs channel coding on the first data according to the first channel coding information and the second channel coding information, comprising:

   The terminal device performs a cyclic redundancy check (CRC) on the first data to generate second data;

   The terminal device performs block processing on the second data to determine a plurality of first code blocks;

   The terminal device performs first channel coding on the plurality of first code blocks to generate a plurality of second code blocks;

   The terminal device performs second channel coding on the plurality of second code blocks respectively to generate a plurality of third code blocks.
8. The method according to claim 7, wherein the number C of the first code blocks is determined according to at least one of the following: the code rate R ₁ of the first channel coding, the number of bits B of the second data, the code block The number L of cyclic redundancy check bits, and the number of bits K _cb included in the largest code block corresponding to the second channel coding.
9. The method according to claim 8, wherein the number C of the first code blocks is determined according to the following formula:

   

   Alternatively, the number C of the first code blocks is determined according to the following formula:

   
10. The method according to claim 8 or 9, wherein the number N of bits included in the first code block is determined according to at least one of the following: the code rate R ₁ of the first channel coding, the number of bits of the second data B, the number L of CRC bits of the code block, and the number C of the first code block.
11. The method according to claim 10, wherein the number N of bits included in the first code block is determined according to the following formula:

    N=(B/R ₁ +CL)/C

    Alternatively, the number of bits N included in the first code block is determined according to the following formula:

    
12. The method according to any one of claims 1-11, wherein the first channel coding is repetitive coding, and the value of the code rate R ₁ of the first channel coding is based on the value of the first channel coding. The number of repetitions is determined.
13. The method according to claim 12, wherein when the repetition times m is less than or equal to a preset threshold value Z, the value of the code rate R ₁ of the first channel coding is

    

    In the case that the repetition times m is greater than the preset threshold value Z, the value of the code rate R ₁ of the first channel coding is

    
14. A communication device, comprising: a processing unit;

    The processing unit is configured to determine the first data according to the first channel coding information and the second channel coding information; wherein the first channel coding information is used for the first channel coding of the first data; the The second channel coding information is used for the second channel coding of the first data; the number of bits included in the first data is determined according to the first channel coding information and the second channel coding information;

    The processing unit is further configured to perform channel coding on the first data according to the first channel coding information and the second channel coding information.
15. The apparatus according to claim 14, wherein the first channel coding information comprises at least one of the following: a code rate of the first channel coding, a coding method of the first channel coding, and the The number of repetitions of the first channel coding;

    The second channel coding information includes at least one of the following items: a code rate of the second channel coding, a coding mode of the second channel coding, and the number of repetitions of the second channel coding.
16. The apparatus according to claim 14 or 15, wherein the size of the first data is determined according to at least one of the following: a code rate R 1 of the first channel coding, a code rate R ₁ of the second channel coding The code rate R ₂ , the total number of bits G ₂ of the first data after channel coding, and the scale factor S of the first data.
17. The apparatus according to claim 16, wherein the size TBS' of the first data is determined according to the following formula:

    TBS'=R ₁ ·R ₂ ·G ₂

    Or, the size TBS' of the first data is determined according to the following formula:

    TBS'=R ₁ ·R ₂ ·G ₂ ·S.
18. The device according to any one of claims 14-17, wherein the communication device further comprises: a communication unit;

    The communication unit is configured to receive first indication information from a network device; the first indication information is used to indicate at least one of the first channel coding information and the second channel coding information.
19. The apparatus according to claim 18, wherein the first indication information is carried in any one of the following: radio resource control RRC, medium access control-control element MAC-CE, downlink control information DCI.
20. The device according to any one of claims 14-19, wherein the processing unit is specifically used for:

    performing a cyclic redundancy check (CRC) on the first data to generate second data;

    performing block processing on the second data to determine a plurality of first code blocks;

    Performing first channel coding on the plurality of first code blocks respectively to generate a plurality of second code blocks;

    A second channel coding is performed on the plurality of second code blocks respectively to generate a plurality of third code blocks.
21. The apparatus according to claim 20, wherein the number C of the first code blocks is determined according to at least one of the following: the code rate R ₁ of the first channel coding, the number of bits B of the second data, the code blocks The number L of cyclic redundancy check bits, and the number of bits K _cb included in the largest code block corresponding to the second channel coding.
22. The apparatus according to claim 21, wherein the number C of the first code blocks is determined according to the following formula:

    

    Alternatively, the number C of the first code blocks is determined according to the following formula:

    
23. The apparatus according to claim 21 or 22, wherein the number N of bits included in the first code block is determined according to at least one of the following: the code rate R ₁ of the first channel coding, the number of bits of the second data B, the number L of CRC bits of the code block, and the number C of the first code block.
24. The apparatus according to claim 23, wherein the number N of bits included in the first code block is determined according to the following formula:

    N=(B/R ₁ +CL)/C

    Alternatively, the number of bits N included in the first code block is determined according to the following formula:

    
25. The apparatus according to any one of claims 14-24, wherein the first channel coding is repetition coding, and the value of the code rate R ₁ of the first channel coding is based on the value of the first channel coding. The number of repetitions is determined.
26. The apparatus according to claim 25, wherein, in the case that the repetition times m is less than or equal to a preset threshold value Z, the value of the code rate R ₁ of the first channel coding is

    

    In the case that the repetition times m is greater than the preset threshold value Z, the value of the code rate R ₁ of the first channel coding is

    
27. A communication device, characterized by comprising a processor and an interface circuit, the interface circuit being configured to receive signals from other communication devices other than the communication device and transmit to the processor or transfer signals from the processor The signal is sent to other communication devices other than the communication device, and the processor is used to implement the method according to any one of claims 1 to 13 by means of a logic circuit or executing code instructions.
28. A computer-readable storage medium, comprising computer-executable instructions, which, when executed on a computer, cause the computer to perform the method according to any one of claims 1 to 13.
29. A computer program product which, when run on a computer, causes the computer to perform the method of any of the preceding claims 1-13.

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