WO2018202151A1

WO2018202151A1 - Communication method and communication device

Info

Publication number: WO2018202151A1
Application number: PCT/CN2018/085674
Authority: WO
Inventors: 陈军; 谢勇; 金杰; 刘亚林; 余荣道; 杜颖钢
Original assignee: 华为技术有限公司
Priority date: 2017-05-05
Filing date: 2018-05-04
Publication date: 2018-11-08
Also published as: CN108809498B; CN108809498A

Abstract

The present application provides a communication method and a communication device. Said method comprises: a first communication device determining a first numerical value according to an encoding matrix, the number N of redundancy version (RV) candidate values and a first RV value, where N is a positive integer greater than or equal to 1; the first communication device determining, according to the first numerical value, a transmission starting position in a first bit sequence. On the basis of the technical solution above, the first communication device can flexibly select the transmission starting position and bits of the first bit sequence to be sent, and in this way, flexible and efficient sending processing and receiving processing can be achieved, improving transmission performance.

Description

Communication method and communication device

The present application claims priority to Chinese Patent Application No. JP-A No. No. No. No. Publication No. No. No. No. No. No. No. No. No. No. No.

Technical field

The present application relates to the field of communication technologies, and more particularly to communication methods and communication devices.

Background technique

Future mobile communication systems need to support huge mobile data traffic, massive device connections, various new services and application scenarios. For example, the 3rd Generation Partnership Project (3GPP) identified the following types of services: Enhanced Mobile Broadband (eMMB), Massive Machine Type Communications (mMTC), and Ultra High Ultra-Reliable and Low Latency Communications (URLLC). Different business types have different requirements for communication.

In the current communication system, when the transmitting device sends a bit sequence to the receiving device, it can transmit a bit sequence to the receiving device multiple times. The bit sequence transmitted by the transmitting device each time may be part of the original bit sequence. However, in the current technical solution, the position of the bit sequence transmitted by the transmitting device every time is fixed. This technical solution does not apply to different types of business. Therefore, there is an urgent need to provide a flexible way of transmitting bit sequences.

Summary of the invention

The present application provides a communication method and a communication device, which can flexibly select a transmission start position, implement flexible and efficient transmission processing and reception processing, and improve transmission performance.

In a first aspect, an embodiment of the present application provides a communication method, where the method includes: determining, by a first communication device, a first value according to an encoding matrix, a number of redundancy version RV candidate values N, and a first RV value, where N is greater than or A positive integer equal to 1; the first communication device determines a transmission start position in the first bit sequence based on the first value. Based on the above technical solution, the first communication device can flexibly select a transmission start position, so that flexible and efficient transmission processing and reception processing can be realized, and transmission performance is improved.

With reference to the first aspect, in a first possible implementation manner of the first aspect, before the first communication device determines the first value according to the coding matrix, the redundancy version RV candidate value number N, and the first RV value, The method further includes the first communication device determining the number N of the RV candidate values based on at least one of the encoding information and the service information; the first communication device determining N RV candidate values; the first communication device determining the N RVs One of the candidate values is the first RV value. Based on the foregoing technical solution, the first communication device can determine the RV number simply and effectively, and can also appropriately configure the corresponding RV number according to various situations, and flexibly select and use the RV value, thereby improving the flexibility of the method.

In conjunction with the first possible implementation of the first aspect, in a second possible implementation of the first aspect, before the first communications device determines that the one of the N RV candidate values is the first RV value The method further includes: the first communication device receiving the first indication information sent by the second communication device, the first indication information being used to indicate a second RV value, wherein the second RV value is the N RV candidate values One of the first communication devices determining that one of the N RV candidate values is the first RV value comprises: the first communication device using the second RV value as the first RV value. Based on the foregoing technical solution, the first communications device may determine the first RV value in conjunction with the first indication information sent by the second communications device. In this way, the first communication device and the second communication device can complementarily select the transmission start position and the bits of the first bit sequence to be transmitted, thereby implementing flexible and efficient transmission processing and reception processing, and improving transmission performance.

In conjunction with the first possible implementation of the first aspect, in a third possible implementation manner of the first aspect, the first communications device determines that one of the N RV candidate values is the first RV value, including Determining, by the first communication device, the N RV candidate values according to at least one of a number of bits of the third bit sequence, a number of transmissions of the first bit sequence, the coded information, the service information, and a resource allocation size. One of the first RV values is obtained by encoding the third bit sequence. Based on the foregoing technical solution, the first communication device can dynamically select and use the first RV value according to the change of the transmission environment and the transmission condition, thereby implementing flexible and efficient transmission processing and improving transmission performance.

With reference to the first possible implementation of the first aspect to any one of the possible implementations of the third possible implementation of the first aspect, in a fourth possible implementation of the first aspect, the Determining, by the communication device, the first value according to the coding matrix, the number of redundancy version RV candidate values N, and the first RV value, including: the first communication device determining the first according to the coding matrix and a buffer size of the second communication device a buffer size of a bit sequence; the first communication device determines the first value according to a buffer size of the first bit sequence, the number N of RV candidate values, and the first RV value. Based on the above technical solution, the first communication device can dynamically determine the first value for determining the transmission start position in combination with the difference in hardware performance of the communication device, so that the transmission start position and the first bit sequence to be transmitted can be flexibly selected. The bits enable flexible and efficient transmission processing and improve transmission performance.

In conjunction with the fourth possible implementation of the first aspect, in a fifth possible implementation manner of the first aspect, the first communications device determines the first information according to the encoding matrix and a buffer size of the second communications device The buffer size of the bit sequence includes: the first communication device determines a second value according to a buffer size of the second communication device, wherein the second value is less than or equal to a buffer size of the second communication device; the first communication device Determining a third value according to the size of the coding matrix, wherein the third value is M times the number of columns or rows of the coding matrix, where M is based on a spreading factor, and M is a positive integer greater than or equal to The first communication device determines a buffer size of the first bit sequence according to the second value and the third value. Based on the above technical solution, the first communication device can dynamically determine the buffer size of the first bit sequence for determining the transmission start position in combination with the difference in hardware performance of the communication device, so that the transmission start position and the need to transmit can be flexibly selected. The bits of the first bit sequence enable flexible and efficient transmission processing and improve transmission performance.

In conjunction with the fifth possible implementation of the first aspect, in a sixth possible implementation manner of the first aspect, the first communications device determines, according to the second value and the third value, the first bit sequence The buffer size includes: the first communication device determines that the buffer size of the first bit sequence is a smaller one of the second value and the third value. Based on the foregoing technical solution, the first communication device can dynamically determine the buffer size of the first bit sequence for determining the transmission start position according to the difference in hardware performance of the communication device, implement flexible and efficient transmission processing, and improve transmission performance.

With reference to the fourth possible implementation of the first aspect to the sixth possible implementation of the first aspect, in a seventh possible implementation manner of the first aspect, the first value satisfies one of the following formulas :

Wherein, V ₁ represents the first value, L ₀ represents a buffer size of the first bit sequence, RV represents the first RV value, Z ₁ is a positive integer multiple of the spreading factor, and Z ₂ is a common multiple of Z ₁ and N, f(t) represents a function of t, f(t)=t or

t represents the parameter in the function, t is

or

Based on the foregoing technical solution, the first communication device can set N transmission start positions as uniformly as possible in the first bit sequence, so that each bit of the first bit sequence obtains a transmission opportunity, thereby implementing flexible and efficient transmission processing and improving Transmission performance.

With reference to the fourth possible implementation of the first aspect to the sixth possible implementation of the first aspect, in an eighth possible implementation of the first aspect, the first communications device is configured according to the first bit sequence Determining the first value, the cache size of the first bit sequence, the number of the RV candidate values N, the first The first sequence of values is determined by the structure of the bit sequence and the first RV value, wherein the structure of the first bit sequence is determined by the coding matrix. Based on the foregoing technical solution, the first communication device can flexibly use the coding matrix, support multiple first bit sequence structures, implement flexible and efficient transmission processing, and improve transmission performance.

In conjunction with the eighth possible implementation of the first aspect, in a ninth possible implementation manner of the first aspect, the structure of the first bit sequence is determined by the coding matrix, including: when the coding matrix includes the first part and In the second part, the first bit sequence sequentially includes a first information bit field, a second information bit field, a first parity bit field, and a second parity bit field, wherein the first parity bit field is based on The second check bit field generated by the first part is generated according to the second part; or, when the code matrix includes the first part and does not include the second part, the first bit sequence of the first bit sequence The first information bit field, the second information bit field, and the first parity bit field are sequentially included and the second parity bit field is not included. Based on the foregoing technical solution, the first communication device can flexibly use the coding matrix, support multiple first bit sequence structures, implement flexible and efficient transmission processing, and improve transmission performance.

In conjunction with the ninth possible implementation of the first aspect, in a tenth possible implementation manner of the first aspect, the first value satisfies one of the following formulas:

Wherein, V ₁ represents the first value, L ₀ represents a buffer size of the first bit sequence, and L ₁ represents a total buffer size of the first information bit field, the second information bit field, and the first parity bit field. , L ₂ represents the first information bit buffer size field, RV RV represents the first value, Z ₁ is a positive integral multiple of the spreading factor, Z ₂ and Z ₁ is a common multiple of N, Z ₃ is N Z ₁ and a common multiple of ₁ , Z ₄ is a common multiple of Z ₁ and (NN ₁ ),

f(t) represents a function of t, f(t)=t or

t represents the parameter in the function, t is

or

Based on the foregoing technical solution, the first communication device may set a plurality of N transmission start positions as uniformly as possible in the first bit sequence according to the structure of the plurality of first bit sequences, so that each bit of the first bit sequence is correspondingly Get the right transmission opportunity, achieve flexible and efficient transmission processing, and improve transmission performance.

In conjunction with the ninth possible implementation of the first aspect, or the tenth possible implementation of the first aspect, in the eleventh possible implementation manner of the first aspect, the second bit sequence includes the second And verifying the bit field and the second bit sequence is the first bit sequence for transmitting the first bit sequence, the second bit sequence including at least one or more of the first bit sequence One bit; or, the second bit sequence includes at least one bit of one or more fields other than the second parity bit field from the first bit sequence; or, the second bit sequence includes the second And verifying the bit field and the second bit sequence is the nth bit sequence for transmitting the first bit sequence, the second bit sequence including at least one or more of the first bit sequence One bit, n is a positive integer greater than one. Based on the foregoing technical solution, the first communication device can obtain a suitable transmission opportunity corresponding to each bit of the first bit sequence according to the structure of the first bit sequence, thereby implementing flexible and efficient transmission processing and improving transmission performance.

With reference to the first aspect, or any one of the foregoing possible implementation manners of the first aspect, in a twelfth possible implementation manner of the first aspect, the method further includes: the first communications device sends the second communications device to the second communications device The fourth indication information is used to indicate the first RV value. Based on the foregoing technical solution, the first communications device may send the determined first RV value to the second communications device, so that the second communications device may implement flexible and efficient receiving processing based on the first RV value, and improve transmission. performance.

With reference to the ninth possible implementation of the first aspect, to any one of the possible implementations of the eleventh possible implementation of the first aspect, in a thirteenth possible implementation manner of the first aspect, The method further includes: the first communication device transmitting second indication information to the second communication device, the second indication information being used to indicate whether the encoding matrix includes the second portion or whether the first bit sequence includes the second Check bit field. Based on the foregoing technical solution, the first communications device may indicate the structure of the first bit sequence or the structure of the encoding matrix to the second communications device, such that the second communications device may be based on the structure of the first bit sequence or the encoding. The structure of the matrix determines the starting position of the transmission.

With reference to the first aspect, or any one of the foregoing possible implementation manners of the first aspect, in the fourteenth possible implementation manner of the first aspect, the first communications device is in the first bit sequence according to the first value Determining the transmission start position, the first communication device determining, according to the first value, that the vth bit of the first bit sequence is the transmission start position, wherein the value of v satisfies one of the following formulas:

v=V ₁ ,

v=V ₁ +d×Z,

v=V ₁ -d×Z

Wherein V ₁ represents the first value, Z represents an expansion factor, d represents an offset value, and d is an integer. Based on the foregoing technical solution, the first communication device can flexibly select a transmission start position and a bit of the first bit sequence that needs to be transmitted, implement flexible and efficient transmission processing, and improve transmission performance.

With reference to the fourteenth possible implementation manner of the first aspect, in a fifteenth possible implementation manner of the first aspect, the method further includes: the first communications device sends the third indication information to the second communications device The third indication information is used to indicate the offset value. Based on the above technical solution, the first communication device may transmit an offset value to the second communication device, so that the second communication device determines the transmission start position according to the offset value.

With reference to the first aspect, or any one of the foregoing possible implementation manners of the first aspect, in a sixteenth possible implementation manner of the first aspect, the method further includes: the first communications device sends the second communications device to the second communications device a second bit sequence comprising at least one bit of the first bit sequence from the transmission start position.

In a second aspect, an embodiment of the present application provides a communication method, where the method includes: determining, by a second communication device, a first value according to an encoding matrix, a number of redundancy version RV candidate values N, and a first RV value; the second communication device Receiving a second bit sequence transmitted by the first communication device, where the second bit sequence includes at least one bit of the first bit sequence from a transmission start position; the second communication device determines the transmission start according to the first value position. Based on the foregoing technical solution, the transmission start position and the bit of the first bit sequence that needs to be transmitted are flexibly selected, so that flexible and efficient receiving processing can be realized, and transmission performance is improved.

With reference to the second aspect, in a first possible implementation manner of the second aspect, before the second communication device determines the first value according to the coding matrix, the number of redundancy version RV candidate values N, and the first RV value, The method further includes the second communication device determining the number N of the RV candidate values based on at least one of the encoding information and the service information; the second communication device determining N RV candidate values; the second communication device determining the N RVs One of the candidate values is the first RV value. Based on the foregoing technical solution, the second communication device can determine the RV number simply and effectively, and can also appropriately configure the corresponding RV number in combination with various situations, and flexibly select and use the RV value, thereby improving the flexibility of the method.

With reference to the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the second communications device determines that one of the N RV candidate values is the first RV value, including The second communication device determines the N of the RV candidate values according to at least one of the number of bits of the third bit sequence, the number of times the first bit sequence is received, the coded information, the service information, and the resource allocation size. One of the first RV values, wherein the first bit sequence is obtained by the first communication device encoding the third bit sequence. Based on the foregoing technical solution, the second communication device can dynamically select and use the first RV value according to the change of the transmission environment and the transmission condition, thereby implementing flexible and efficient receiving processing and improving transmission performance.

With reference to the second aspect, in a third possible implementation manner of the second aspect, before the second communication device determines the first value according to the coding matrix, the number of redundancy version RV candidate values N, and the first RV value, The method further includes the second communication device determining the number N of the RV candidate values based on at least one of the encoding information and the service information; the second communication device determining N RV candidate values; the second communication device determining the N RVs One of the candidate values is a second RV value; the second communication device sends first indication information to the first communication device, the first indication information being used to indicate the second RV value. Based on the above technical solution, the second communication device can assist the first communication device to determine the first RV value. In this way, the first communication device and the second communication device can complementarily select the transmission start position and the bits of the first bit sequence to be transmitted, thereby implementing flexible and efficient transmission processing and reception processing, and improving transmission performance.

With reference to the second aspect or the third possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the second communication device is based on the coding matrix, the number of redundancy version RV candidate values N, and The first RV value, before determining the first value, the method further includes: the second communication device receiving the fourth indication information sent by the first communication device, the fourth indication information being used to indicate the first RV value. Based on the foregoing technical solution, the second communication device may determine the first RV value according to the indication of the first communication device, implement flexible and efficient receiving processing, and improve transmission performance.

With reference to the second aspect or any one of the foregoing possible implementation manners of the second aspect, in a fifth possible implementation manner of the second aspect, the second communications apparatus, according to the encoding matrix, the number of redundancy version RV candidate values, N Determining, by the first RV value, the first value, the second communication device determining a buffer size of the first bit sequence according to the coding matrix and a buffer size of the second communication device; the second communication device is configured according to the first The buffer size of the bit sequence, the number N of RV candidate values, and the first RV value determine the first value. Based on the above technical solution, the second communication device can dynamically determine the first value for determining the transmission start position in combination with the difference in hardware performance of the second communication device. In this case, the transmission start position and the bits of the first bit sequence to be transmitted are flexibly selected, so that flexible and efficient reception processing can be realized, and transmission performance can be improved.

With reference to the fifth possible implementation manner of the second aspect, in a sixth possible implementation manner of the second aspect, the second communications device determines, according to the encoding matrix and a buffer size of the second communications device, the first a buffer size of the bit sequence, comprising: the second communication device determining a second value according to a buffer size of the second communication device, wherein the second value is less than or equal to a buffer size of the second communication device; the second communication device Determining a third value according to the size of the coding matrix, wherein the third value is M times the number of columns or rows of the coding matrix, where M is based on a spreading factor, and M is a positive integer greater than or equal to The second communication device determines a buffer size of the first bit sequence based on the second value and the third value. Based on the above technical solution, the second communication device can dynamically determine the buffer size of the first bit sequence for determining the transmission start position in combination with the difference in hardware performance of the second communication device. In this case, the transmission start position and the bits of the first bit sequence to be transmitted are flexibly selected, so that flexible and efficient reception processing can be realized, and transmission performance can be improved.

With reference to the sixth possible implementation of the second aspect, in a seventh possible implementation manner of the second aspect, the second communications device determines, according to the second value and the third value, the first bit sequence The buffer size includes: the second communication device determines that the buffer size of the first bit sequence is a smaller one of the second value and the third value. Based on the foregoing technical solution, the second communication device can dynamically determine the buffer size of the first bit sequence for determining the transmission start position according to the difference in hardware performance of the communication device, implement flexible and efficient transmission processing, and improve transmission performance.

With reference to the fifth possible implementation of the second aspect to any one of the possible implementations of the seventh possible implementation of the second aspect, in an eighth possible implementation manner of the second aspect, the A value satisfies one of the following formulas:

t represents the parameter in the function, t is

or

Based on the above technical solution, the N transmission start positions in the first bit sequence can be uniformly set, so that each bit of the first bit sequence obtains a transmission opportunity, and flexible and efficient reception processing is realized, and transmission performance is improved.

With reference to the fifth possible implementation of the second aspect to any one of the possible implementations of the seventh possible implementation of the second aspect, in a ninth possible implementation manner of the second aspect, the The second communication device determines the first value according to the buffer size of the first bit sequence, the number N of the RV candidate values, and the first RV value, including: the second communication device according to the buffer size of the first bit sequence, The first number of values is determined by the number N of RV candidate values, the structure of the first bit sequence, and the first RV value, wherein the structure of the first bit sequence is determined by the coding matrix. Based on the foregoing technical solution, the second communication device can flexibly use the coding matrix, supports a structure of multiple first bit sequences, implements flexible and efficient receiving processing, and improves transmission performance.

With reference to the ninth possible implementation manner of the second aspect, in a tenth possible implementation manner of the second aspect, the structure of the first bit sequence is determined by the coding matrix, including: when the coding matrix includes the first part and In the second part, the first bit sequence sequentially includes a first information bit field, a second information bit field, a first parity bit field, and a second parity bit field, wherein the first parity bit field is based on The second check bit field generated by the first part is generated according to the second part; or, when the code matrix includes the first part and does not include the second part, the first bit sequence of the first bit sequence The first information bit field, the second information bit field, and the first parity bit field are sequentially included and the second parity bit field is not included. Based on the foregoing technical solution, the second communication device can flexibly use the coding matrix, supports a structure of multiple first bit sequences, implements flexible and efficient receiving processing, and improves transmission performance.

With reference to the tenth possible implementation manner of the second aspect, in the eleventh possible implementation manner of the second aspect, the first value satisfies one of the following formulas:

f(t) represents a function of t, f(t)=t or

t represents the parameter in the function, t is

or

Based on the above technical solution, the N transmission start positions in the first bit sequence can be uniformly set according to the structure of the first bit sequence, so that each bit of the first bit sequence obtains a transmission opportunity, and flexible and efficient reception processing is realized. , improve transmission performance.

With reference to the tenth possible implementation manner of the second aspect, or the eleventh possible implementation manner of the second aspect, in the twelfth possible implementation manner of the second aspect, the first bit sequence includes the first a second parity bit field, where the second bit sequence is the first bit sequence for transmitting the first bit sequence, the second bit sequence includes any one or more of the first bit sequence At least one bit; or, the second bit sequence includes at least one bit of one or more fields other than the second parity bit field from the first bit sequence; or, the first bit sequence includes the first bit sequence a second parity bit field, where the second bit sequence is the nth bit sequence for transmitting the first bit sequence, the second bit sequence includes any one or more of the first bit sequence At least one bit, n is a positive integer greater than one. Based on the foregoing technical solution, the N transmission start positions in the first bit sequence may be uniformly set according to the structure of the first bit sequence, so that each bit of the first bit sequence obtains a transmission opportunity, and flexible and efficient receiving processing is implemented. Improve transmission performance.

With reference to the tenth possible implementation of the second aspect to any one of the possible implementations of the twelfth possible implementation of the second aspect, in a thirteenth possible implementation manner of the second aspect, Before the second communication device determines the first value according to the buffer size of the first bit sequence, the number N of the RV candidate values, the structure of the first bit sequence, and the first RV value, the method further includes: The second communication device receives the second indication information that is sent by the first communications device, where the second indication information is used to indicate whether the encoding matrix includes the second portion or whether the first bit sequence includes the second parity bit field. Based on the above technical solution, the second communication device may determine the transmission start position according to the structure of the first bit sequence indicated by the first communication device or the structure of the coding matrix.

With reference to the second aspect or any one of the foregoing possible implementation manners of the second aspect, in the fourteenth possible implementation manner of the second aspect, the second communications device determines the transmission start location according to the first value The second communication device determines, according to the first value, that the vth bit of the first bit sequence is the transmission start position, where the value of v satisfies one of the following formulas:

v=V ₁ ,

v=V ₁ +d×Z,

v=V ₁ -d×Z

Wherein V ₁ represents the first value, Z represents an expansion factor, d represents an offset value, and d is an integer. Based on the foregoing technical solution, the second communication device can flexibly select a transmission start position and a bit of the first bit sequence that needs to be transmitted, implement flexible and efficient receiving processing, and improve transmission performance.

With reference to the fourteenth possible implementation manner of the second aspect, in a fifteenth possible implementation manner of the second aspect, before the second communication device determines the transmission start location according to the first value, The method further includes: the second communication device receiving the fourth indication information sent by the first communication device, the fourth indication information being used to indicate the offset value. Based on the above technical solution, the second communication device may determine the transmission start position according to the received offset value.

In a third aspect, an embodiment of the present application provides a communication apparatus, where the communication apparatus includes a unit for implementing the first aspect or any possible implementation of the first aspect.

In a fourth aspect, an embodiment of the present application provides a communication apparatus, where the communication apparatus includes a unit for implementing any of the possible implementations of the second aspect or the second aspect.

In a fifth aspect, an embodiment of the present application provides a communication apparatus, where the communication apparatus includes a processor and a memory. The memory is for storing instructions implementing the first aspect or any of the possible implementations of the first aspect. The processor executes instructions stored by the memory in conjunction with its hardware.

In a sixth aspect, an embodiment of the present application provides a communication apparatus, where the communication apparatus includes a processor, a memory, and a transceiver. The memory is for storing instructions implementing any of the possible implementations of the second aspect or the second aspect. The processor, in conjunction with the transceiver, executes the instructions stored by the memory.

Yet another aspect of the present application provides a computer readable storage medium having stored therein instructions that, when executed on a computer, cause the computer to perform the methods described in the various aspects above.

Yet another aspect of the present application provides a computer program product comprising instructions that, when executed on a computer, cause the computer to perform the methods described in the various aspects above.

DRAWINGS

FIG. 1 is a schematic flowchart of a communication method according to an embodiment of the present application.

FIG. 2 is a schematic diagram of a first bit sequence according to an embodiment of the present application.

FIG. 3 is a schematic diagram of another first bit sequence according to an embodiment of the present application.

FIG. 4 is a schematic diagram of another first bit sequence according to an embodiment of the present application.

FIG. 5 is a schematic diagram of another first bit sequence according to an embodiment of the present application.

FIG. 6 is a schematic diagram of another first bit sequence according to an embodiment of the present application.

FIG. 7 is a schematic diagram of another first bit sequence according to an embodiment of the present application.

FIG. 8 is a structural block diagram of a communication apparatus according to an embodiment of the present application.

FIG. 9 is a structural block diagram of a communication apparatus according to an embodiment of the present application.

detailed description

The technical solutions in the present application will be described below with reference to the accompanying drawings.

It should be understood that the technical solution of the embodiment of the present application can be applied to various communication systems that use a coding matrix to encode a bit sequence to be transmitted, for example, a communication system using a Low Density Parity Check Code (LDPC). . Another example is a communication system using Reed-Muller Codes (RM) code. Another example is a communication system using a Polar code.

The communication device referred to in the embodiment of the present application may include a terminal device and a network device.

The terminal device referred to in the technical solution of the embodiment of the present application may also be referred to as an access terminal, a user equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, and a mobile device. , a user terminal, a terminal, a user agent or user device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, and a terminal in a future communication system. The terminal device can communicate with one or more core networks via a radio access network (RAN), or can access the distributed network in an ad hoc or unlicensed manner, and the terminal device can also access through other means. The wireless network communicates, and the terminal device can directly perform wireless communication with other terminals. This embodiment of the present application does not limit this.

The network device referred to in the embodiment of the present application may be a base station (node B), an evolved base station (evolutional node B, eNB), a base station in a communication system, a base station or a network device in a future communication system, or the like.

The coding matrix referred to in the embodiment of the present application may be the coding matrix used in the LDPC coding, or may be the coding matrix used in the RM coding, or may be the coding matrix used in the Polar coding. This is not limited.

For convenience of description, the bit sequence generated by the encoder in the embodiment of the present application is referred to as a first bit sequence. A bit sequence for transmitting at least one bit in the first bit sequence is referred to as a second bit sequence. The bit sequence before encoding of the first bit sequence is referred to as a third bit sequence. The first bit sequence may include at least one information bit and at least one parity bit. The third bit sequence corresponds to at least one information bit, for example the bit of the third bit sequence is identical to the at least one information bit.

101. The first communications device determines the number N of the RV candidate values according to at least one of the encoding information and the service information.

The coding information may include coding matrix information, coding parameters.

The coding matrix information may be the size of the coding matrix or an element included in the coding matrix. In the case where the coding parameter is the size of the coding matrix, the size of the coding matrix may be different, and the number of RV candidate values may also be different.

For example, Table 1 is a correspondence relationship between the coding matrix information and the number N of RV candidate values.

编码矩阵Coding matrix	RV候选值数目Number of RV candidates
Hb1Hb1	2和/或42 and / or 4
Hb2Hb2	66
Hb3Hb3	88

Table 1

Hb1, Hb2, and Hb3 as shown in Table 1 represent three different coding matrices. Optionally, in some embodiments, the coding matrices may be coding matrices of different sizes. For example, the sizes of Hb1, Hb2, and Hb3 may be 10×20, 10×30, and 15×60, respectively. Optionally, in other embodiments, the coding matrices may also be coding matrices of the same size but different elements included. The first communication device can determine the number of RV candidate values based on the coding matrix used. In the case where the coding matrix is Hb1, the number of RV candidate values is 2 or 4. In the case where the coding matrix is Hb2, the number of RV candidate values is 6. In the case where the coding matrix is Hb3, the number of RV candidate values is 8. The larger the size of the coding matrix, the greater the number of RV candidate values. In this way, the transmission start position and the bits of the first bit sequence to be transmitted can be flexibly selected, and flexible and efficient transmission processing and reception processing are realized, and the transmission performance is improved.

The encoding parameters may include the number of information bits, the code rate, the number of bits of the second bit sequence, the number of bits of the third bit sequence, and the like.

In the case where the coding parameter is the number of information bits, the number of information bits may be different, and the number of RV candidate values may also be different.

For example, Table 2 is a correspondence relationship between the number of information bits and the number N of RV candidate values.

信息比特数目Number of information bits	RV候选值数目Number of RV candidates
32-102432-1024	2和/或42 and / or 4
1025-40961025-4096	66
4097-81984097-8198	88

Table 2

As shown in Table 2, in the case where the number of information bits is 32 to 1024, the number of RV candidate values is 2 or 4. In the case where the number of information bits is 1025 to 4096, the number of RV candidate values is 6. In the case where the number of information bits is 4097 to 8918, the number of RV candidate values is 8. The more the number of information bits can be, the greater the number of RV candidate values. In this way, the transmission start position and the bits of the first bit sequence to be transmitted can be flexibly selected, and flexible and efficient transmission processing and reception processing are realized, and the transmission performance is improved.

In the case where the coding parameter is a code rate, the code rate may be different, and the number of RV candidate values may also be different.

For example, Table 3 is a correspondence relationship between a code rate and the number N of RV candidate values.

码率Code rate	RV候选值数目Number of RV candidates
1/5≤R<1/31/5≤R<1/3	88
1/3≤R<2/31/3 ≤ R < 2/3	66
2/3≤R<8/92/3≤R<8/9	2和/或42 and / or 4

table 3

As shown in Table 3, in the case where the code rate R is greater than or equal to 2/3 and less than 8/9, the number of RV candidate values is 2 or 4. In the case where the code rate R is greater than or equal to 1/3 and less than 2/3, the number of RV candidate values is 6. In the case where the code rate R is greater than or equal to 1/5 and less than 1/3, the number of RV candidate values is 8. The smaller the code rate, the more the number of RV candidate values can be. In this way, the transmission start position and the bits of the first bit sequence to be transmitted can be flexibly selected, and flexible and efficient transmission processing and reception processing are realized, and the transmission performance is improved.

The service information may be a service type or a service demand for delay. The lower the service demand for delay, the fewer the number of RV candidates. The higher the service demand for delay, the greater the number of RV candidates. This can meet the business's demand for latency.

For example, service types can include: Enhanced Mobile Broadband (eMMB), Massive Machine Type Communications (mMTC), Ultra-Reliable and Low Latency Communications (Ultra-Reliable and Low Latency Communications, URLLC). Table 4 shows the correspondence between a service type and the number N of RV candidate values.

业务类型business type	RV候选值数目Number of RV candidates
URLLCURLLC	1和/或21 and / or 2
eMBBeMBB	4和/或64 and / or 6
mMTCmMTC	6和/或86 and / or 8

Table 4

As shown in Table 4, in the case where the service type is URLLC, the number of RV candidate values is 1 or 2. In the case where the service type is eMBB, the number of RV candidate values is 4 or 6. In the case where the service type is mMTC, the number of RV candidate values is 6 or 8.

"And/or" in Tables 1 to 4 indicates that the number of corresponding RV candidate values may be one of two values, or may include two values at the same time. The first communication device may select one of the two values as the number of RV candidate values. For example, the first communication device can select a smaller of the two values.

Optionally, in some embodiments, the first communications device may determine the number of RV candidate values according to the encoding information. Further, the encoded information may include a variety of information, for example, the encoded information may include a code rate and a number of information bits. In this way, the first communication device can determine the number N of RV candidate values according to the correspondence between the code rate and the number N of RV candidate values and the correspondence between the number of information bits and the number N of RV candidate values.

Optionally, in other embodiments, the first communications device may determine the number N of the RV candidate values according to the service information.

Optionally, in another quantity, the first communications device may determine the number N of RV candidate values according to the service information and the encoding information. For example, in the case where the code rate R is 7/9 and the traffic type is URLLC, the first communication device may determine that the number N of RV candidate values is equal to two.

It is to be understood that Tables 1 to 4 are only intended to help those skilled in the art to better understand the embodiments of the present application, and are not intended to limit the technical solutions of the present application. Based on the above content, a person skilled in the art can obtain a correspondence between other service information and coding information and the number N of RV candidate values.

102. The first communications device determines N RV candidate values, where N is a positive integer greater than or equal to one.

Optionally, in some embodiments, the N RV candidate values may include N integers less than or equal to N, and each RV candidate value is a positive integer greater than or equal to 0 and less than or equal to N-1. Each of the N RV candidate values may be preset. Thus, after determining the number of RV candidate values, the first communication device can determine each RV candidate value. Different RV candidate values may be the same or different. For example, the N RV candidate values are 0, 1, ..., N-1 in order. For another example, the N RV candidate values may be 0, 0, 2, 2 in order.

Optionally, in other embodiments, the first communications device may also randomly determine the N RV candidate values, each RV candidate value being a positive integer greater than or equal to 0 and less than or equal to N-1.

103. The first communications device determines one of the N RV candidate values as a first RV value.

Optionally, in some embodiments, the first communications device may directly determine, according to a preset rule, one of the N RV candidate values as the first RV value. For example, the first communication device may determine the first RV value according to the number or sequence of transmissions of the second bit sequence. Specifically, if the second bit sequence is the first bit sequence for transmitting bits in the first bit sequence (for convenience of description, hereinafter referred to as: initial transmission bit sequence), corresponding to the first transmission of the first bit For the sequence, the first RV value may be the first RV candidate value of the N RV candidate values. If the second bit sequence is the nth bit sequence for transmitting the bits in the first bit sequence (for convenience of description, hereinafter referred to as: retransmission bit sequence or n-1th group retransmission bit sequence), corresponding to the Transmitting the first bit sequence n times, the first RV value may be the mod(n,N) RV candidate values of the N RV candidate values, where n is a positive integer greater than 1, mod(n, N) indicates that the remainder operation is performed on n and N.

Optionally, in other embodiments, the first communications apparatus may further be configured according to the number of bits of the third bit sequence, the number of transmissions of the first bit sequence, the encoding information, the service information, and the resource allocation size. And determining, by the at least one of the N RV candidate values, the first RV value, wherein the first bit sequence is obtained by encoding the third bit sequence.

For example, Table 5 is the correspondence between the number of bits of a third bit sequence and the first RV value.

table 5

As shown in Table 5, in the case where the number of bits of the third bit sequence is greater than or equal to 10 and less than or equal to 20, the first RV value may be 0; the number of bits in the third bit sequence is greater than or In the case of 100 equal to or less than or equal to 200, the first RV value may be 1; in a case where the number of bits of the third bit sequence is greater than or equal to 1000 and less than or equal to 2000, the first RV value may be 2.

Table 6 is a correspondence between the number of transmissions n for transmitting the first bit sequence and the first RV value.

Table 6

As shown in Table 6, in the case of transmitting the first bit sequence for the first time, the first RV value may be 0; in the case of transmitting the first bit sequence for the second time, the first RV value may be 1; in the case of transmitting the first bit sequence for the third time, the first RV value may be 2; in the case of transmitting the first bit sequence for the fourth time, the first RV value may be 3.

Table 7 is a correspondence relationship between the coded information when the coded information is the code rate and the first RV value.

码率Code rate	第一RV值 First RV value
1/5≤R<1/31/5≤R<1/3	00
1/3≤R<2/31/3 ≤ R < 2/3	11
2/3≤R<8/92/3≤R<8/9	22

Table 7

As shown in Table 7, in the case where the code rate R is greater than or equal to 2/3 and less than 8/9, the first RV value is 2. In the case where the code rate R is greater than or equal to 1/3 and less than 2/3, the first RV value is 1. In the case where the code rate R is greater than or equal to 1/5 and less than 1/3, the first RV value is zero.

Table 8 is the correspondence between a service type and the first RV value.

业务类型business type	第一RV值First RV value
URLLCURLLC	00
eMBB eMBB	0，1，2和/或30, 1, 2 and / or 3
mMTC mMTC	11

Table 8

As shown in Table 8, in the case where the service type is URLLC, the first RV value is 0. In the case where the service type is eMBB, the first RV value is 0, 1, 2, and/or 3. In the case where the service type is mMTC, the first RV value is 1.

Table 9 is a correspondence relationship between the resource allocation size (the number of resource blocks) and the first RV value.

资源块数目Number of resource blocks	第一RV值First RV value
1-501-50	00
51-10051-100	11
101-110101-110	22

Table 9

As shown in Table 9, in the case where the number of resource blocks is greater than or equal to 1 and less than or equal to 50, the first RV value may be 0; in the case where the number of resource blocks is greater than or equal to 51 and less than or equal to 100. The first RV value may be 1; in a case where the number of resource blocks is greater than or equal to 101 and less than or equal to 110, the first RV value may be 2.

Similar to Tables 1 to 4, "and/or" in Table 8 indicates that the number of corresponding RV candidate values may be one of four values, or may include multiple or all of the four values simultaneously. The first communication device may select one of the plurality or all of the values as the first RV value. For example, the first communication device can select a minimum of a plurality or all of them.

Optionally, in some embodiments, the first communications apparatus may use one of a number of bits of the third bit sequence, a number of transmissions of the first bit sequence, the encoding information, the service information, and a resource allocation size. , determining the first RV value. For example, in the case where the code rate R is 7/9, the first communication device can determine that the first RV value is 2.

Optionally, in other embodiments, the first communications apparatus may be configured according to the number of bits of the third bit sequence, the number of transmissions of the first bit sequence, the encoding information, the service information, and the resource allocation size. A plurality of pieces determine the first RV value. For example, in the case where the code rate R is 7/9 and the number of bits of the third bit sequence is 800, the first communication device can determine that the first RV value is 2.

It is to be understood that Tables 5 to 9 are only intended to help those skilled in the art to better understand the embodiments of the present application, and are not intended to limit the technical solutions of the present application. Based on the above, other corresponding relationships can be obtained by those skilled in the art.

Optionally, in some embodiments, the first communications device may indicate the determined first RV value to the second communications device, so that the second communications device may determine a transmission start location according to the first RV value. . In this case, the method shown in FIG. 1 may include step 104.

104. The first communications device may send, to the second communications device, fourth indication information, where the fourth indication information is used to indicate the first RV value.

Optionally, in some embodiments, the fourth indication information may include the first RV value. In this way, the second communication device can directly use the first RV value included in the fourth indication information. The second communication device does not need to determine the first RV value by itself.

Optionally, in other embodiments, one of the N RV candidate values may correspond to one RV index. The fourth indication information may include an RV index corresponding to the first RV value. In this case, the second communication device may determine the RV candidate value corresponding to the RV index according to the RV index included in the fourth indication information. Then, the second communication device may determine that the RV candidate value corresponding to the RV index is the first RV value. The second communication device does not need to determine the first RV value by itself.

For example, in some embodiments, the N RV candidate values may be in one-to-one correspondence with the N RV indices. In this case, one RV index corresponds to one RV candidate value. As another example, in some embodiments, the N RV candidate values may correspond to M RV indices, where M is a positive integer greater than one and less than N. In this case, one or more of the M RV indexes may correspond to a plurality of identical RV candidate values. For example, four RV candidate values can be 0, 0, 1, 2. In this case, there can be three RV indexes, which correspond to 0, 1, and 2, respectively.

Optionally, in some embodiments, the second communications device may determine the first RV value by itself. That is, step 104 may not be included in some embodiments.

Optionally, in some embodiments, the first communications device may send at least one of the encoding information and the service information for determining the number N of the RV candidate values to the second communications device. The second communication device may determine the number N of RV candidate values according to at least one of the encoding information and the service information, and then determine N RV candidate values and determine one of the N RV candidate values as the first RV value. . The specific manner in which the second communication device determines the first RV value is the same as the manner in which the first communication device determines the first RV value, and need not be described herein.

Optionally, in some embodiments, the first communications device may send the determined number N of the RV candidate values to the second communications device. The second communication device may directly determine the N RV candidate values and determine one of the N RV candidate values as the first RV value. The specific manner in which the second communication device determines the first RV value is the same as the manner in which the first communication device determines the first RV value, and need not be described herein.

It can be understood that if the first RV value is determined by the second communication device, the parameters and rules used by the second communication device to determine the first RV value and the first communication device determine the first RV. Values use the same parameters and rules. In this way, it can be ensured that the first RV value determined by the second communication device is the same as the first RV value determined by the first communication device, so that the second communication device can ensure that the transmission start position can be correctly determined.

Optionally, in other embodiments, the first communication device and the second communication device may determine the first manner by using other methods, except that the first RV value may be determined by using the foregoing steps 101 to 103. RV value.

Optionally, in some embodiments, the number N of RV candidate values and the first RV value may be preset or pre-negotiated.

Optionally, in some embodiments, the first communication device and the second communication device may save the number of RV candidate values by pre-negotiating or pre-storing.

For example, the first communication device and the second communication device may preset the number N of RV candidate values to be equal to four.

For another example, the first communication device and the second communication device may pre-store a plurality of sets of RV candidate value numbers N, and then determine the number of RV candidate values to be used by negotiation. For example, the first communication device and the second communication device can set two sets of RV candidate values. The number of RV candidate values for one set may be 4, and the number of RV candidate values for another set may be 2. The first communication device and the second communication device can negotiate to determine the number of RV candidate values to use.

Optionally, in other embodiments, the first communications device may pre-store the number N of RV candidate values, and then send the number N of RV candidate values to the second communications device.

Optionally, in some embodiments, the first communication device and the second communication device may preset a rule for determining the first RV value, and then directly determine the first RV value. For example, the first communication device and the second communication device can determine the first RV value according to whether the second bit sequence is an initial transmission bit sequence or a retransmission bit sequence. For example, if the second bit sequence is an initial transmission bit sequence, the first communication device and the second communication device may determine that the first RV value is 0; if the second bit sequence is the n-1th group retransmission The bit sequence, then the first communication device and the second communication device can determine that the first RV value is mod(n, N). Of course, the first communication device and the second communication device may further determine the first RV value according to other rules. For example, if the second bit sequence is an initial transmission bit sequence, the first RV value is 0; if the second bit sequence is a retransmission bit sequence, the first RV value is 1.

105. The first communication device determines the value V ₁ according to the coding matrix, the redundancy version (RV) candidate number N, and the first RV value.

Optionally, in some embodiments, the first communications device may determine a buffer size of the first bit sequence according to the encoding matrix and a buffer size of the second communications device. The first communication device may determine the value V ₁ according to the buffer size of the first bit sequence, the number N of the RV candidate values, and the first RV value.

The first communication device can determine the value V ₂ based on the buffer size of the second communication device. Optionally, in some embodiments, the value V ₂ may be the buffer size of the second communication device. In other embodiments, the value V ₂ may be a partial available cache size of the second communication device. For example, the second communication device can transmit the buffer size of the second communication device to the first communication device. The first communication device can determine an available cache size of the second communication device according to the communication service running on the second communication device. Of course, the second communication device can also directly send the available buffer size to the first communication device.

The first communication device can also determine the value V ₃ based on the size of the coding matrix. Optionally, in some embodiments, the value V ₃ may be M times the number of columns of the coding matrix. In other embodiments, the value V ₃ may be M times the number of rows of the coding matrix. Optionally, in other embodiments, the value V ₃ may be M times the maximum number of columns of the coding matrix, M times of the maximum number of rows of the coding matrix, M times of the minimum number of columns of the coding matrix, and At least one of M times the minimum number of rows of the coding matrix.

M is a positive integer greater than or equal to 1. M is based on the expansion factor. For example, M can be equal to the expansion factor. As another example, M can be equal to the maximum spreading factor and M can be equal to the minimum spreading factor.

The first communication device can determine the buffer size of the first bit sequence based on the value V ₂ and the value V ₃ . For example, the buffer size of the first bit sequence may be the smaller of the value V ₂ and the value V ₃ . As another example, the buffer size of the first bit sequence can be a larger of the value V ₂ and the value V ₃ . As another example, the buffer size of the first bit sequence can be an average of the value V ₂ and the value V ₃ .

Optionally, in some embodiments, the first communications device may first determine a buffer size of the first bit sequence, and then encode the third bit sequence according to a buffer size of the first bit sequence.

The coding matrix may be part or all of the initial matrix.

Optionally, in some embodiments, the initial matrix may include a first portion and a second portion. The first part of the initial matrix comprises a symmetric matrix or an asymmetric matrix of the size a1×a1 whose elements on the main diagonal and the sub-diagonal are the same, where a1 is a positive integer greater than one. The second part of the initial matrix comprises a symmetric matrix of the same size a2 x a2, the elements on the main diagonal are the same, where a2 is a positive integer greater than one.

In this case, if the first communication device encodes the third bit sequence using the initial matrix as an encoding matrix, the first bit sequence obtained after the encoding may include a first information bit field, a second information bit field, and a first A check bit field and a second check bit field. The first parity bit field is derived based on a first portion of the initial matrix, the second parity bit field being derived based on a second portion of the initial matrix.

Optionally, in some embodiments, the initial matrix may include only the first portion and not the second portion. In this case, if the first communication device encodes the third bit sequence using the initial matrix as an encoding matrix, the encoded first bit sequence may include the first information bit field, the second information bit field, and The first parity bit field. The first bit sequence does not include the second parity bit field.

The coding matrix used by the first communication device to encode the third bit sequence may be all of the initial matrix or part of the initial matrix. The encoding matrix selected by the first communication device from the initial matrix when encoding the third bit sequence is required to make the number of bits of the first bit sequence obtained after encoding equal to the buffer size of the first bit sequence.

For example, where the initial matrix includes a first portion and a second portion, the first communication device can use the first portion of the initial matrix as an encoding matrix. Thus, the first bit sequence obtained after encoding may include only the first information bit field, the second information bit field, and the first parity bit field. In this way, it can be ensured that the number of bits included in the first bit sequence is equal to the buffer size of the first bit sequence.

Optionally, in other embodiments, the first communications device may first encode the third bit sequence, and then truncate the encoded bit sequence, and the truncated bit sequence is equal to the buffer of the first bit sequence. size.

Specifically, in a case where the initial matrix includes the first part and the second part, the first communications apparatus may directly encode the third bit sequence by using the initial matrix as an encoding matrix, and the encoded bit sequence may include the first An information bit field, a second information bit field, a first parity bit field, and a second parity bit field. The first communication device can then truncate the second parity bit field in the encoded bit sequence. The bit sequence obtained after truncation includes only the first information bit field, the second information bit field, and the first parity bit field. In this way, it can be ensured that the number of bits included in the first bit sequence is equal to the buffer size of the first bit sequence.

Optionally, in some embodiments, the value V ₁ determined by the first communications device may satisfy one of the following formulas:

Wherein, V ₁ represents the value V ₁ , L ₀ represents the buffer size of the first bit sequence, RV represents the first RV value, Z ₁ is a positive integer multiple of the spreading factor, and Z ₂ is a common multiple of Z ₁ and N, f(t) represents a function of t, f(t)=t or

t represents the parameter in the function, t is

or

Optionally, in some embodiments, Z ₁ is equal to the spreading factor.

Alternatively, in some embodiments, Z ₂ may be equal to the product of Z ₁ and N.

Alternatively, in other embodiments, Z ₂ may be equal to a positive integer multiple of the product of Z ₁ and N.

For example, if Z ₁ = 4 and N = 2, Z ₂ may be equal to 4, 8, 16, and the like.

The transmission start position determined according to Equation 1.1 and Equation 1.2 may be the first bit of the first bit sequence, that is, the first bit of the first information bit field.

Optionally, in other embodiments, the first communications device may determine the value according to the buffer size of the first bit sequence, the number N of the RV candidate values, the structure of the first bit sequence, and the first RV value. V ₁ , wherein the structure of the first bit sequence is determined by the coding matrix.

Specifically, when the coding matrix includes the first part and the second part, the first bit sequence sequentially includes a first information bit field, a second information bit field, a first parity bit field, and a second parity bit field, The first check bit field is generated according to the first part, and the second check bit field is generated according to the second part; or, when the code matrix includes the first part and does not include the second part The first bit sequence of the first bit sequence sequentially includes the first information bit field, the second information bit field, and the first parity bit field, and does not include the second parity bit field. The first portion of the coding matrix may be all or part of the first portion of the initial matrix. The second portion of the coding matrix may be part or all of the initial matrix. In other words, the first part of the coding matrix comprises a symmetric matrix or an asymmetric matrix of size b1×b1, the elements on the main diagonal and the sub-diagonal are the same, where b1 is greater than 1 and less than or A positive integer equal to a1. The second portion of the coding matrix comprises a symmetric matrix of size b2 x b2, the elements on the main diagonal are all the same, where b2 is a positive integer greater than one and less than or equal to a2.

When the first communication device encodes the third bit sequence, the coding matrix may be extended by using a matrix of size Z×Z to obtain an extended coding matrix, and then the third bit is obtained by using the extended coding matrix. The sequence is encoded to obtain the first bit sequence. The Z×Z matrix may be one of an all-zero matrix, an identity matrix, and a matrix after the column of the unit matrix is cyclically shifted. Z is the expansion factor.

The first information bit field and the second information bit field each include a partial information bit in the first bit sequence. Specifically, the first information bit field includes at least one of the information bits in the first bit sequence. The second information bit field includes bits of the information bits in the first bit sequence other than the bits included in the first information bit field. If the first bit sequence includes the first parity bit field and the second parity bit field, the first parity bit field and the second parity bit field each include a portion of the first bit sequence Check bit. Specifically, the first parity bit field includes at least one of the parity bits in the first bit sequence. The second parity bit field includes bits of the parity bits in the first bit sequence other than the bits included in the first parity bit field. If the first bit sequence does not include the second parity bit field, the first parity bit field includes all parity bits in the first bit sequence.

The first communication device may determine the value V ₁ according to the buffer size of the first bit sequence, the number of the RV candidate values N, the structure of the first bit sequence, and the first RV value, including: the first communication device determines The value V ₁ can satisfy one of the following formulas:

Wherein, V ₁ represents a value V ₁ , L ₀ represents a buffer size of the first bit sequence, and L ₁ represents a total buffer size of the first information bit field, the second information bit field, and the first parity bit field, L ₂ represents the first information bit buffer size field, RV RV represents the first value, Z ₁ is a positive integral multiple of the spreading factor, Z ₂ and Z ₁ is a common multiple of N, Z ₃ is Z ₁ and the _{N. 1} a common multiple, Z ₄ is a common multiple of Z ₁ and (NN ₁ ),

f(t) represents a function of t, f(t)=t or

t represents the parameter in the function, t is

or

Optionally, in some embodiments, Z ₁ is equal to the spreading factor.

Alternatively, in some embodiments, Z ₃ may be equal to the product of Z ₁ and N ₁ .

Alternatively, in other embodiments, Z ₃ may be equal to a positive integer multiple of the product of Z ₁ and N ₁ .

Alternatively, in some embodiments, Z ₄ may be equal to the product of Z ₁ and (NN ₁ ).

Alternatively, in other embodiments, Z ₄ may be equal to a positive integer multiple of the product of Z ₁ and (NN ₁ ).

The transmission start position determined according to Equations 1.3 to 1.6 may be the first bit of the second information bit field. The transmission start position determined according to Equation 1.5 and Equation 1.6 may also be the first bit of the second parity bit field.

106. The second communication device determines the value V ₄ according to the coding matrix, the number N of RV candidate values, and the first RV value.

The manner in which the second communication device determines the value V _{4 is} the same as the manner in which the first communication device determines the value V ₁ , and need not be described herein. In this case, the second communication device determines that the value V ₄ is also the same as the first communication device determination value V ₁ . The use of V _{4 in} step 106 to indicate V ₁ is to distinguish between V ₄ and V ₁ as determined by different communication devices. V ₄ is the same as V ₁ .

Optionally, in some embodiments, step 107 may also be included, and step 107 may be performed before step 106. 107. The first communications device may send second indication information to the second communications device, where the second indicating information is used to indicate whether the encoding matrix includes the second portion or whether the first bit sequence includes the second parity bit a field, so that the second communication device determines the value V ₄ according to the buffer size of the first bit sequence, the number N of the RV candidate values, the structure of the first bit sequence, and the first RV value.

108. The first communication device determines a transmission start position in the first bit sequence according to the value V ₁ .

Determining, by the first communication device, the transmission start position in the first bit sequence according to the value V ₁ , the method includes: determining, by the first communication device, the vth bit of the first bit sequence as the transmission start according to V ₁ position.

Alternatively, in some embodiments, the first communication means can be directly determined that the first bit sequence of V ₁ for bit transmission start position. That is v=V ₁ .

Alternatively, in some embodiments, V of the first bit sequence in _a bit field for the second information bit in the first bit sequence in a first bit. In other embodiments, V of the first bit sequence in _a bit for the first bit of the second field of the first check bit in the bit sequence.

Optionally, in other embodiments, the v determined by the first communications device may satisfy one of the following formulas:

v=V ₁ +d×Z, (Formula 1.7)

v=V ₁ -d×Z, (Formula 1.8)

Wherein V ₁ represents a value V ₁ , Z represents an expansion factor, d represents an offset value, and d is an integer.

Optionally, in some embodiments, if the first communication device determines the value of v by using Equation 1.7 or Equation 1.8, step 109 may also be included.

109. The first communications device may send, to the second communications device, third indication information, where the third indication information is used to indicate the offset value.

Optionally, in other embodiments, the offset value may be preset. In this case, the second communication device can directly determine the offset value, thereby determining the value of v based on the offset value.

110. The first communication device sends a second bit sequence to the second communication device, where the second bit sequence includes at least one bit in the first bit sequence from the transmission start position.

When the first communication device transmits the second bit sequence, the bits in the first bit sequence are cyclically read from the transmission start position in the first bit sequence. The first bit of the second bit sequence is the bit in the first bit sequence located at the beginning of the transmission.

In the case where the first bit sequence includes the second parity bit field and the second bit sequence is the first bit sequence for transmitting the first bit sequence (ie, the initial transmission bit sequence), the second bit The sequence may include at least one bit of any one or more of the first bit sequences. In other words, the second bit sequence may include at least one of the first information bit field, the second information bit field, the first parity bit field, and the at least one of the second parity bit field . For convenience of description, this transmission mode is hereinafter referred to as a first transmission mode. Or, if the first bit sequence includes the second parity bit field and the second bit sequence is the first bit sequence used to transmit the first bit sequence, the second bit sequence may include from the At least one bit of one or more fields other than the second parity bit field in the first bit sequence. In other words, the second bit sequence may include at least one of the first information bit field, the second information bit field, and at least one of the first comparison check bit fields. For convenience of description, this transmission mode is hereinafter referred to as a second transmission mode.

In the case where the first bit sequence includes the second parity bit field and the second bit sequence is the nth bit sequence for transmitting the first bit sequence (ie, a retransmission bit sequence), the second bit The sequence includes at least one bit of any one or more of the first bit sequences, n being a positive integer greater than one. That is, the first bit sequence is transmitted by using the first transmission mode.

Optionally, in some embodiments, the first communications device may further send, to the second communications device, indication information, where the indication information is used to indicate a transmission manner used by the first communications device to transmit the initial transmitted bit sequence.

Optionally, in some embodiments, the n-1th group retransmission bit sequence may be an even position bit of the at least one information bit, and the nth group retransmission bit sequence may be an odd position of the at least one information bit. Bit, where n can be even or odd.

111. The second communication device determines the transmission start position in the first bit sequence according to the value V ₄ .

Alternatively, in some embodiments, the second communication device can be directly determined that the first bit sequence of bits for transmission V ₄ starting position. That is v=V ₄ . In other words, the second communication apparatus may directly determine the first bit of the second bit sequence is the first bit sequence of V ₄ bits.

Optionally, in another embodiment, if the second communications device receives the third indication information sent by the first communications device, or presets an offset value, the second communications device may determine the offset value according to the offset value. And V ₄ determines the transmission start position. In other words, the second communication device may be a v-th bits of the second bit of the bit sequence for the first bit of the sequence is determined according to the offset value and V _4. Specifically, the second communication device may determine, by using a preset formula (eg, Equation 1.7 or 1.8), that the vth bit of the first bit sequence is the transmission start position. It can be understood that when the second communication device determines the value of v by using Equation 1.7 or 1.8, it is necessary to represent V ₁ in Equation 1.7 or 1.8 as V ₄ .

After the second communication device determines the transmission start position, it may determine that the received second bit sequence is located in the first bit sequence, so that the received bit sequence can be decoded.

Further, in some embodiments, if the second bit sequence is the n-1th group retransmission bit sequence, determining, by the first communication device, the value V according to the coding matrix, the number of RV candidate values N, and the first RV value. Before step ₁ , step 112 may also be included.

112. The second communications device may send first indication information to the first communications device, where the first indication information is used to indicate a second RV value. The second RV value is one of the N RV candidate values.

Specifically, the second communication device may not successfully receive the bit sequence of the n-1th transmission. In this case, the second communication device can determine the second RV value and indicate the second RV value to the first communication device. In this case, the first communication device can directly determine that the second RV value is the first RV value.

The second RV value determined by the second communication device may be the RV value used when the n-1th transmitted bit sequence is used, and the second RV value may also be determined by other means. For example, the second RV value may be determined in the same manner that the first communication device determines the first RV value in the step 101 to the step 103. The specific implementation manner is not necessary herein.

Optionally, in some embodiments, the first indication information may include the second RV value. In this way, the first communications device can directly determine that the second RV value included in the first indication information is the first RV value.

Optionally, in other embodiments, one of the N RV candidate values may correspond to one RV index. The first indication information may include an RV index corresponding to the second RV value. In this case, the first communication device may determine the RV candidate value corresponding to the RV index according to the RV index included in the first indication information. Then, the first communication device may determine that the RV candidate corresponding to the RV index is the second RV value, and use the second RV value as the first RV value.

Further, after the first communication device uses the second RV value as the first RV value, the first communication device may further send the determined first RV value to the second communication device. The specific transmission method is the same as step 104, and need not be described here.

Optionally, in some embodiments, the first communication device of the method shown in FIG. 1 may be a device (eg, a chip) or a network device, such as a base station, located in a network device. The second communication device may be a device (eg, a chip) or a terminal device located in the terminal device.

Optionally, in another embodiment, optionally, in some embodiments, the second communication device of the method shown in FIG. 1 may be a device (such as a chip) or a network device, such as a base station, located in the network device. . The first communication device may be a device (eg, a chip) or a terminal device located in the terminal device.

FIG. 2 is a schematic diagram of a first bit sequence according to an embodiment of the present application. The first bit sequence as shown in FIG. 2 includes a first information bit field, a second information bit field, a first parity bit field, and a second parity bit field. Wherein, S1, S2, P1, and P2 represent a first information bit field, a second information bit field, a first parity bit field, and a second parity bit field, respectively. RV0, RV1, RV2, and RV3 in Fig. 2 respectively indicate the transmission start position determined by the first communication device based on the four first RV values. The four transmission start positions as shown in Fig. 2 can be determined using Equation 1.5 or Equation 1.6.

One of the four transmission start positions as shown in FIG. 2 is located at the first bit of the second information bit field, and the other is located at the first bit of the second parity bit field. As shown in Fig. 2, L ₁ : L ₀ = 1:4.

FIG. 3 is a schematic diagram of another first bit sequence according to an embodiment of the present application. The first bit sequence as shown in FIG. 3 includes a first information bit field, a second information bit field, a first parity bit field, and a second parity bit field. Wherein, S1, S2, P1, and P2 represent a first information bit field, a second information bit field, a first parity bit field, and a second parity bit field, respectively. RV0, RV1, RV2, and RV3 in Fig. 3 respectively indicate the transmission start position determined by the first communication device based on the four first RV values. The four transmission start positions as shown in FIG. 3 can be determined using Equation 1.5 or Equation 1.6.

One of the four transmission start positions as shown in FIG. 3 is located at the first bit of the second information bit field, and the other is located at the first bit of the second parity bit field. As shown in Fig. 3, L ₁ : L ₀ = 1:2.

FIG. 4 is a schematic diagram of another first bit sequence according to an embodiment of the present application. The first bit sequence as shown in FIG. 4 includes a first information bit field, a second information bit field, a first parity bit field, and a second parity bit field. Wherein, S1, S2, P1, and P2 represent a first information bit field, a second information bit field, a first parity bit field, and a second parity bit field, respectively. RV0, RV1, RV2, and RV3 in Fig. 4 respectively indicate the transmission start position determined by the first communication device based on the four first RV values. The four transmission start positions as shown in FIG. 4 can be determined using Equation 1.5 or Equation 1.6.

One of the four transmission start positions as shown in FIG. 4 is located at the first bit of the second information bit field, and the other is located at the first bit of the second parity bit field. As shown in Fig. 4, L ₁ : L ₀ = 3:4.

FIG. 5 is a schematic diagram of another first bit sequence according to an embodiment of the present application. The first bit sequence as shown in FIG. 5 includes a first information bit field, a second information bit field, a first parity bit field, and a second parity bit field. Wherein, S1, S2, P1, and P2 represent a first information bit field, a second information bit field, a first parity bit field, and a second parity bit field, respectively. RV0, RV1, RV2, and RV3 in Fig. 5 respectively indicate the transmission start position determined by the first communication device based on the four first RV values. The four transmission start positions as shown in FIG. 5 can be determined using Equation 1.3 or Equation 1.4.

One of the four transmission start positions as shown in FIG. 5 is located at the first bit of the second information bit field.

FIG. 6 is a schematic diagram of another first bit sequence according to an embodiment of the present application. The first bit sequence as shown in FIG. 6 includes a first information bit field, a second information bit field, and a first parity bit field. Wherein, S1, S2, and P1 represent a first information bit field, a second information bit field, and a first parity bit field, respectively. RV0, RV1, RV2, and RV3 in Fig. 6 respectively indicate transmission start positions determined by the first communication device based on the four first RV values. The four transmission start positions as shown in Fig. 6 can be determined using Equation 1.3 or Equation 1.4.

One of the four transmission start positions as shown in FIG. 6 is located at the first bit of the second information bit field.

Figure 2 can be applied to scenes where the number of information bits is within the first number of information bits or the code rate is within the first code rate range. For example, the first number of information bits ranges from 32 to 1024. The first code rate ranges from greater than or equal to 1/5 and less than 1/3.

Figure 3 can be applied to scenes where the number of information bits is in the range of the second number of information bits or the code rate is in the second code rate range. For example, the second number of information bits ranges from 1025 to 4096. The second code rate ranges from greater than or equal to 1/3 and less than 2/3.

4, 5, and 6 can be applied to a scene in which the number of information bits is within the third information bit number range or the code rate is within the third code rate range. For example, the third number of information bits ranges from 4097 to 8918. The third code rate ranges from greater than or equal to 2/3 and less than 8/9.

FIG. 7 is a schematic diagram of another first bit sequence according to an embodiment of the present application. The first bit sequence as shown in FIG. 7 includes a first information bit field, a second information bit field, a first parity bit field, and a second parity bit field. Wherein, S1, S2, P1, and P2 represent a first information bit field, a second information bit field, a first parity bit field, and a second parity bit field, respectively. RV0, RV1, RV2, and RV3 in Fig. 7 respectively indicate transmission start positions determined by the first communication device based on the four first RV values and the offset values corresponding to each of the first RV values. FIG 7 RV1 ', RV2' and RV3 'respectively represent the first four communication apparatus according to a first determined value RV ₁ in the first bit position V sequence, d1 represents RV1' offset between the RV1 The value, d2 represents the offset value between RV2' and RV2, and d3 represents the offset value between RV3' and RV3. The second communication device may determine the transmission start position based on the four first RV values and the offset value corresponding to each of the first RV values.

The embodiment of the present application further provides a communication method, where the method includes: the communication device determines a first value according to an encoding matrix, a redundancy version RV candidate value number N, and a first RV value, where N is a positive integer greater than or equal to 1. The communication device determines a transmission start position in the first bit sequence based on the first value.

Alternatively, in some embodiments, the method can be performed by a communication device that transmits a second sequence of bits. In this case, the method may further include: the communication device transmitting the second bit sequence to another communication device, wherein the second bit sequence includes at least one bit in the first bit sequence from the transmission start position . In this case, the communication method of the communication apparatus can refer to the steps performed by the first communication apparatus in the embodiment shown in FIG. 1.

Optionally, in some embodiments, the method may also be performed by a communication device that receives the second bit sequence. In this case, the method may further include: the communication device receiving the second bit sequence transmitted by the other communication device, wherein the second bit sequence includes at least one bit in the first bit sequence from the transmission start position . In this case, the communication method of the communication apparatus can refer to the steps performed by the second communication apparatus in the embodiment shown in FIG. 1.

FIG. 8 is a structural block diagram of a communication apparatus according to an embodiment of the present application. The communication device 800 shown in FIG. 8 includes a first processing unit 801 and a second processing unit 802.

The first processing unit 801 is configured to determine a first value according to the coding matrix, the number of redundancy version RV candidate values N, and the first RV value, where N is a positive integer greater than or equal to 1.

The second processing unit 802 is configured to determine a transmission start position in the first bit sequence according to the first value. The communication device 800 shown in FIG. 8 may be the first communication device as shown in FIG. 1. In this case, the communication device 800 may further include a communication unit for transmitting the second bit sequence to another communication device, wherein the second bit sequence includes the transmission start position from the first bit sequence At least one bit from the beginning. Communication device 800 can perform the various steps performed by the first communication device in the method illustrated in FIG. The specific functions and advantageous effects of the respective units of the communication device 800 can be referred to the method shown in FIG. 1, and need not be described herein.

Alternatively, in other embodiments, the communication device 800 shown in FIG. 8 may be the second communication device as shown in FIG. 1. In this case, the communication device 800 may further include a communication unit for receiving a second bit sequence transmitted by the other communication device, wherein the second bit sequence includes the transmission start position from the first bit sequence At least one bit from the beginning. Communication device 800 can perform the various steps performed by the second communication device of the method shown in FIG. The specific functions and advantageous effects of the respective units of the communication device 800 can be referred to the method shown in FIG. 1, and need not be described herein.

The communication device 800 shown in FIG. 8 may be a communication device such as a base station, a terminal device, or the like, or may be a chip.

FIG. 9 is a structural block diagram of a communication apparatus according to an embodiment of the present application. The communication device 900 shown in FIG. 9 includes a processor 901 and a memory 902.

The processor 901 executes instructions stored in the memory 902, and the memory 902 is configured to store an instruction to: determine the first value according to the encoding matrix, the number of redundancy version RV candidate values N, and the first RV value, where N is greater than or A positive integer equal to 1; based on the first value, a transmission start position is determined in the first bit sequence.

The memory 901 may be an independent memory or a memory coupled inside the processor 901.

Alternatively, in some embodiments, the communication device 900 shown in FIG. 9 may be the first communication device as shown in FIG. 1. In this case, the communication device 900 may further include a transceiver for transmitting the second bit sequence to another communication device, wherein the second bit sequence includes the first bit sequence from the transmission start position At least one bit. Communication device 900 can perform the various steps performed by the first communication device in the method illustrated in FIG. The specific functions and advantageous effects of the various components of the communication device 900 can be referred to the method shown in FIG. 1, and need not be described herein.

Alternatively, in some embodiments, the communication device 900 shown in FIG. 9 may be the second communication device as shown in FIG. 1. In this case, the communication device 900 may further include a transceiver for receiving a second bit sequence transmitted by another communication device, wherein the second bit sequence includes the first bit sequence from the transmission start position At least one bit. Communication device 900 can perform the various steps performed by the second communication device in the method illustrated in FIG. The specific functions and advantageous effects of the various components of the communication device 900 can be referred to the method shown in FIG. 1, and need not be described herein.

The above chip or processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), or Other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor. The software module can be located in a random access memory (RAM), a flash memory, a read-only memory (ROM), a programmable read only memory or an electrically erasable programmable memory, a register, etc. In the storage medium. The storage medium is located in the memory.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.). The computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media. The usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a Solid State Disk (SSD)) or the like.

The foregoing is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application. It should be covered by the scope of protection of this application. Therefore, the scope of protection of the present application should be determined by the scope of the claims.

Claims

A communication method, characterized in that the method comprises:

The first communication device determines the first value according to the coding matrix, the number of redundancy version RV candidate values N, and the first RV value, where N is a positive integer greater than or equal to 1;

The first communication device determines a transmission start position in the first bit sequence based on the first value.
The method of claim 1, wherein before the first communication device determines the first value according to the coding matrix, the number of redundancy version RV candidate values N, and the first RV value, the method further includes:

The first communication device determines the number N of the RV candidate values according to at least one of the encoding information and the service information;

The first communication device determines N RV candidate values;

The first communication device determines one of the N RV candidate values as the first RV value.
The method of claim 2, wherein before the first communication device determines that one of the N RV candidate values is the first RV value, the method further comprises:

The first communication device receives first indication information sent by the second communication device, where the first indication information is used to indicate a second RV value, wherein the second RV value is one of the N RV candidate values ;

Determining, by the first communications device, one of the N RV candidate values as the first RV value, including:

The first communication device uses the second RV value as the first RV value.
The method of claim 2, wherein the determining, by the first communication device, one of the N RV candidate values is the first RV value comprises:

Determining, by the first communication device, the N according to at least one of a number of bits of the third bit sequence, a number of transmissions of the first bit sequence, the encoding information, the service information, and a resource allocation size. One of the RV candidate values is the first RV value, wherein the first bit sequence is obtained by encoding the third bit sequence.
The method according to any one of claims 2 to 4, wherein the first communication device determines the first value according to the coding matrix, the number of redundancy version RV candidate values N, and the first RV value, including:

Determining, by the first communications device, a buffer size of the first bit sequence according to a buffer size of the encoding matrix and the second communications device;

The first communication device determines the first value according to a buffer size of the first bit sequence, a number N of the RV candidate values, and the first RV value.
The method of claim 5, wherein the first communication device determines a cache size of the first bit sequence according to a buffer size of the encoding matrix and the second communication device, including:

The first communication device determines a second value according to a buffer size of the second communication device, where the second value is less than or equal to a buffer size of the second communication device;

The first communication device determines a third value according to the size of the coding matrix, where the third value is M times the number of columns or rows of the coding matrix, where M is obtained based on the spreading factor, M is a positive integer greater than or equal to 1;

The first communication device determines a buffer size of the first bit sequence according to the second value and the third value.
The method of claim 6, wherein the first communication device determines a cache size of the first bit sequence according to the second value and the third value, including:

The first communication device determines that a buffer size of the first bit sequence is a smaller of the second value and the third value.
The method according to any one of claims 5 to 7, wherein the first communication device is based on a buffer size of the first bit sequence, the number of RV candidate values N, and the first RV value. Determining the first value, including:

Determining, by the first communications device, the first value according to a buffer size of the first bit sequence, a number N of the RV candidate values, a structure of the first bit sequence, and the first RV value, where The structure of the first bit sequence is determined by the coding matrix.
The method of claim 8 wherein the structure of the first bit sequence is determined by the coding matrix, comprising:

When the coding matrix includes a first part and a second part, the first bit sequence sequentially includes a first information bit field, a second information bit field, a first parity bit field, and a second parity bit field, where The first check bit field is generated according to the first part, and the second check bit field is generated according to the second part; or

When the encoding matrix includes the first portion and does not include the second portion, the first bit sequence first bit sequence sequentially includes the first information bit field, the second information bit field, and The first parity bit field is described and the second parity bit field is not included.
The method of claim 9, wherein the method further comprises: the first communication device transmitting second indication information to the second communication device, the second indication information being used to indicate the encoding Whether the matrix includes the second portion or whether the first bit sequence includes the second parity bit field.
The method according to any one of claims 2 to 10, wherein the first communication device determines a transmission start position in the first bit sequence according to the first value, comprising:

The first communication device determines, according to the first value, that the vth bit of the first bit sequence is the transmission start position, where the value of v satisfies one of the following formulas:

v=V 1 ,

v=V 1 +d×Z,

v=V 1 -d×Z,

Wherein V 1 represents the first value, Z represents an expansion factor, d represents an offset value, and d is an integer.
The method of claim 11, wherein the method further comprises: the first communication device transmitting third indication information to the second communication device, the third indication information being used to indicate the bias Move the value.
A communication method, characterized in that the method comprises:

The second communication device determines the first value according to the coding matrix, the number of redundancy version RV candidate values N, and the first RV value, where N is a positive integer greater than or equal to 1;

The second communication device acquires a second bit sequence transmitted by the first communication device, where the second bit sequence includes at least one bit of the first bit sequence from a transmission start position;

The second communication device determines the transmission start position in the first bit sequence based on the first value.
The method according to claim 13, wherein before the determining, by the second communication device, the first value based on the coding matrix, the number of redundancy version RV candidate values N, and the first RV value, the method further comprises:

The second communication device determines the number N of the RV candidate values according to at least one of the encoding information and the service information;

The second communication device determines N RV candidate values;

The second communication device determines one of the N RV candidate values as the first RV value.
The method of claim 14, wherein the second communication device determines that one of the N RV candidate values is the first RV value, comprising: the second communication device is based on a third bit Determining one of the N RV candidate values as the at least one of the number of bits of the sequence, the number of times the first bit sequence is received, the encoding information, the service information, and the resource allocation size a first RV value, wherein the first bit sequence is obtained by the first communication device encoding the third bit sequence.
The method according to claim 13, wherein before the determining, by the second communication device, the first value based on the coding matrix, the number of redundancy version RV candidate values N, and the first RV value, the method further comprises:

The second communication device determines the number N of the RV candidate values according to at least one of the encoding information and the service information;

The second communication device determines N RV candidate values;

The second communication device determines one of the N RV candidate values as a second RV value;

The second communication device sends first indication information to the first communication device, where the first indication information is used to indicate the second RV value.
The method according to any one of claims 13 to 16, wherein the second communication device determines the first value according to the coding matrix, the number of redundancy version RV candidate values N, and the first RV value, including:

Determining, by the second communication device, a buffer size of the first bit sequence according to a buffer size of the encoding matrix and the second communication device;

The second communication device determines the first value according to a buffer size of the first bit sequence, a number N of the RV candidate values, and the first RV value.
The method of claim 17, wherein the second communication device determines a cache size of the first bit sequence according to the coding matrix and a buffer size of the second communication device, including:

The second communication device determines a second value according to a buffer size of the second communication device, where the second value is less than or equal to a buffer size of the second communication device;

The second communication device determines a third value according to the size of the coding matrix, where the third value is M times the number of columns or rows of the coding matrix, where M is obtained based on the spreading factor, M is a positive integer greater than or equal to 1;

The second communication device determines a buffer size of the first bit sequence according to the second value and the third value.
The method of claim 18, wherein the second communication device determines a cache size of the first bit sequence based on the second value and the third value, comprising:

The second communication device determines that a buffer size of the first bit sequence is a smaller of the second value and the third value.
The method according to any one of claims 17 to 19, wherein the second communication device is based on a buffer size of the first bit sequence, the number N of RV candidate values, and the first RV value. Determining the first value, including:

The second communication device determines the first value according to a buffer size of the first bit sequence, a number N of the RV candidate values, a structure of the first bit sequence, and the first RV value, where The structure of the first bit sequence is determined by the coding matrix.
The method of claim 20, wherein the structure of the first bit sequence is determined by the coding matrix, comprising:

When the coding matrix includes a first part and a second part, the first bit sequence sequentially includes a first information bit field, a second information bit field, a first parity bit field, and a second parity bit field, where The first check bit field is generated according to the first part, and the second check bit field is generated according to the second part; or

When the encoding matrix includes the first portion and does not include the second portion, the first bit sequence first bit sequence sequentially includes the first information bit field, the second information bit field, and The first parity bit field is described and the second parity bit field is not included.
The method of claim 21, wherein said first bit sequence comprises said second parity bit field and said second bit sequence is first for transmitting said first bit sequence In the case of a bit sequence, the second bit sequence includes at least one bit of any one or more of the first bit sequences; or the second bit sequence includes from the first bit sequence At least one bit of one or more fields other than the second parity bit field, wherein the second bit sequence includes at least one bit of the first bit sequence from the transmission start position; or

In a case where the first bit sequence includes the second parity bit field and the second bit sequence is an nth bit sequence for transmitting the first bit sequence, the second bit sequence includes At least one bit of any one or more of the first bit sequences, n being a positive integer greater than one.
The method according to claim 21 or 22, wherein at the second communication means, according to a buffer size of the first bit sequence, the number of RV candidate values N, a structure of the first bit sequence, and The first RV value, before determining the first value, the method further includes:

The second communication device receives the second indication information that is sent by the first communications device, where the second indication information is used to indicate whether the encoding matrix includes the second portion or whether the first bit sequence includes The second parity bit field is described.
The method according to any one of claims 13 to 23, wherein the determining, by the second communication device, the transmission start position according to the first value comprises:

The second communication device determines, according to the first value, that the vth bit of the first bit sequence is the transmission start position, where the value of v satisfies one of the following formulas:

v=V 1 ,

v=V 1 +d×Z,

v=V 1 -d×Z

Wherein V 1 represents the first value, Z represents an expansion factor, d represents an offset value, and d is an integer.
The method according to claim 24, wherein before said second communication means determines said transmission start position based on said first value, said method further comprises: said second communication means receiving said The third indication information sent by the first communication device is used to indicate the offset value.
The method according to any one of claims 5 to 7, 17 to 19, wherein the first value satisfies one of the following formulas:

Wherein V 1 represents the first value, L 0 represents a buffer size of the first bit sequence, RV represents the first RV value, Z 1 is a positive integer multiple of the spreading factor, and Z 2 is Z 1 and N The common multiple, f(t) represents the function of t, f(t)=t or
t represents the parameter in the function, t is
or
A method according to claim 9, 21 or 22, wherein said first value satisfies one of the following formulas:

Wherein V 1 represents the first value, L 0 represents a buffer size of the first bit sequence, and L 1 represents the first information bit field, the second information bit field, and the first parity bit The total buffer size of the field, L 2 represents the buffer size of the first information bit field, RV represents the first RV value, Z 1 is a positive integer multiple of the spreading factor, Z 2 is a common multiple of Z 1 and N, Z 3 is a common multiple of Z 1 and N 1 , and Z 4 is a common multiple of Z 1 and (NN 1 ),
f(t) represents a function of t, f(t)=t or
t represents the parameter in the function, t is

or
A communication device, characterized in that the communication device comprises means for implementing the method of any one of claims 1 to 12, 25 to 27.
A communication device, characterized in that the communication device comprises means for implementing the method of any one of claims 13 to 27.