WO2020108259A1

WO2020108259A1 - Data transmission method and apparatus

Info

Publication number: WO2020108259A1
Application number: PCT/CN2019/116023
Authority: WO
Inventors: 刘哲; 彭金磷; 唐浩; 周国华; 唐臻飞
Original assignee: 华为技术有限公司
Priority date: 2018-11-30
Filing date: 2019-11-06
Publication date: 2020-06-04
Also published as: CN111262647B; CN111262647A

Abstract

The present application provides a data transmission method and apparatus. The method comprises: encoding N data blocks in a first encoding mode to generate M encoded blocks, wherein one of the M encoded blocks is an encoded block obtained by encoding d data blocks in the N data blocks, a first parameter in the first encoding mode is used for determining the d data blocks in the N data blocks, the first parameter is related to the number of transmissions of the N data blocks, M and N are integers greater than 1 and M is greater than N, and d is an integer greater than or equal to 1 and d is less than or equal to N; and sending a first set of encoded blocks, the first set of encoded blocks comprising the M encoded blocks. The technical solution in embodiments of the present application can improve the reliability of data transmission and reduces the time delay of data transmission.

Description

Data transmission method and device

This application requires the priority of the Chinese patent application filed on November 30, 2018, with the application number 201811454565.1 and the application name "Data transmission method and device", the entire contents of which are incorporated by reference in this application.

Technical field

The present application relates to the communication field, and in particular to a data transmission method and device in the communication field.

Background technique

In the communication technology, when the network device communicates with the terminal device, the data of the sending node of the application layer is finally mapped to the physical downlink shared channel (physical downlink shared channel (PDSCH) or physical uplink shared channel (PUSCH) channel on. The data of the sending node of the application layer is mapped to the PDSCH channel of the sending node, that is, it is mapped to a part of physical resource block (PRB) resources to transmit the data information of the sending node. When a part of PRB resources are interfered, for example, by the impulse noise of the Industrial Internet, the receiving node device cannot correctly demodulate the data sent by the sending node on the PDSCH channel, which may require multiple retransmissions.

However, with the development of technology, there are some services that have high requirements for the reliability of data transmission, for example, industrial Internet services, vehicle-to-vehicle (vehicle to X, V2X) communication systems (for example, vehicle-to-vehicle -vehicle (V2V), vehicle-to-infrastructure (V2I), vehicle-to-pedestrian (V2P, vehicle-to-network (V2N), etc.), where X represents Everything. Therefore, how to improve the reliability of data transmission and reduce the delay of data transmission has become an urgent technical problem to be solved.

Summary of the invention

The present application provides a data transmission method and device, which can improve the reliability of data transmission and reduce the delay of data transmission.

In a first aspect, a method for data transmission is provided, including: encoding N data blocks in a first encoding mode to generate M encoding blocks, wherein the first parameter in the first encoding mode is used for Determining d data blocks of the N data blocks, the first parameter is related to the number of transmissions of the N data blocks, and one of the M coding blocks is for the N data blocks The encoding blocks obtained by encoding d data blocks in M, N and M are integers greater than 1 and M is greater than N, d is an integer greater than or equal to 1, and d is less than or equal to N; send the first encoding block group, so The first coding block group includes the M coding blocks.

For example, the first coding block group may be sent in a multicast mode or a broadcast mode.

In the data transmission method according to an embodiment of the present application, M data blocks are generated by encoding N data blocks by using the first encoding mode, wherein, for different transmission times of the N data blocks or transmission of N data blocks, the corresponding At the same time slot number, the first parameter may be different. Since the first parameters are different, the d data blocks among the N data blocks determined according to the first parameters are also different. That is to say, for different transmission times, at least one different coding block exists in the M coding blocks transmitted in each of the two adjacent transmissions, which avoids the influence of the same environmental interference when the same coding block is repeatedly transmitted multiple times. Multiple transmission failures. The data transmission method of the present application can increase the probability of successful data reception, reduce the number of retransmissions, help improve the reliability of data transmission and reduce the delay of data transmission.

It should be noted that, in the embodiment of the present application, one transmission of N data blocks can be understood as one transmission of N data blocks as a whole. The N data blocks are transmitted as a whole, which may be a transmission after encoding at least one of the N data blocks, that is, a transmission of the encoding block corresponding to at least one of the N data blocks can be seen The operation is a transmission of N data blocks.

"Transmission" in the embodiments of the present application should be flexibly understood, that is, "transmission" sometimes has the meaning of "sending" and sometimes has the meaning of "receiving". When the node is a sending node, the sending node can send code blocks corresponding to N data blocks; when the node is a receiving node, the receiving node can receive code blocks corresponding to N data blocks.

It should be understood that, in the embodiments of the present application, one data block may be a set of bits. For example, the data block may be a set of bits to be sent by the sending node; or, the data block may also be a set of bits to be received by the receiving node.

With reference to the first aspect, in some implementation manners of the first aspect, the first parameter includes an index value of d data blocks of the N data blocks, and an offset of d data blocks of the N data blocks At least one of the shift value or the number and size of the d data blocks in the N data blocks.

It should be understood that the number of d data blocks in the N data blocks may be a value of d, or a value corresponding to d (that is, it may be understood as one or more of the functions output with d as an input Value). For different transmission times of N data blocks, the value of d may be different.

Exemplarily, the first parameter may be an index value of d data blocks among N data blocks. For different transmission times, there may be at least one difference in the index values of d data blocks among N data blocks, so that d different data blocks can be determined; or, the time slot numbers corresponding to the transmission of N data blocks are different, N There may be at least one difference in the index values of the d data blocks in the data blocks, so that d different data blocks can be determined.

It should be understood that the above and below time slots may also be other time-domain resources, for example, symbols, mini-slots, subframes, or frames.

Exemplarily, the first parameter may be an offset value of d data blocks among N data blocks. For different transmission times of N data blocks, the offset values of d data blocks can be different, so that d different data blocks can be determined; or, different time slot numbers corresponding to the transmission of N data blocks are different, d data The offset values of the blocks can be different, so that d different data blocks can be determined.

Exemplarily, the first parameter may be the number of d data blocks in the N data blocks. For different transmission times of N data blocks, the number and size of d data blocks can be different, so that d different data blocks can be determined; or, different time slot numbers corresponding to the transmission of N data blocks are different, d data blocks The number and size can be different, so that d different data blocks can be determined.

Exemplarily, the first parameter may include an index value of d data blocks in N data blocks and the number and size of the d data blocks in the N data blocks. For different transmission times or different time slot numbers corresponding to the transmission of N data blocks, there may be at least one different index value of the d data blocks in the N data blocks, and the number of the d data blocks in the N data blocks The size can be different, so that d different data blocks can be determined.

For example, it may be that the first transmission determines d1 data blocks, and the second transmission determines d2 data blocks. The d1 data blocks and the d2 data blocks may be all or partially different; d1 may be equal to d2, or Not equal to d2.

It should be noted that in the embodiment of the present application, the first parameter may be a parameter, and the first parameter may also be a parameter set.

In a possible implementation manner, the first parameter may be an index value of d data blocks out of N data blocks, or may be a value corresponding to the index value of d data blocks (that is, it can be understood as d The index value of the data block is taken as one or more values of the output of the input function). For different transmission times of N data blocks or different time slot numbers corresponding to the transmission of N data blocks, there is at least one difference in the determined index values of the d data blocks.

In a possible implementation manner, the first parameter may be an offset value of d data blocks out of N data blocks, or a value corresponding to the offset value of d data blocks (that is, it can be understood as The offset values of the d data blocks are taken as one or more values of the output of the input function). For different transmission times of N data blocks or different time slot numbers corresponding to the transmission of N data blocks, the offset value of the d data blocks may be different.

In a possible implementation manner, the first parameter may include an index value of d data blocks and a number and size of the d data blocks among the N data blocks. It may also be that the first parameter includes a value corresponding to the index value of the d data blocks and the number and size of the d data blocks (that is, it can be understood that the index value of the d data blocks and the number and size of the d data blocks are input One or more values of the function's output). For different transmission times of N data blocks or different time slot numbers corresponding to the transmission of N data blocks, the index value of the d data blocks and the number and size of the d data blocks may be different.

For example, it may be that the number and size of the d data blocks are the same, and the index values of the d data blocks are different. It may be that the number and size of the d data blocks are different, and the index values of the d data blocks are also different.

In a possible implementation manner, the first parameter may include an index value of d data blocks and an offset value of d data blocks in N data blocks, or the first parameter may include an index with d data blocks The value corresponding to the offset value of the d data blocks (that is, one or more values of the output of the function that takes the index value of the d data blocks and the offset value of the d data blocks as input) . For different transmission times of N data blocks or different time slot numbers corresponding to transmission of N data blocks, the index value of d data blocks and the offset value of d data blocks may be different.

In a possible implementation manner, the first parameter may include the offset value of d data blocks and the number and size of the d data blocks in the N data blocks, or the first parameter may include the offset from the d data blocks The value corresponding to the shift value and the number and size of the d data blocks (that is, it can be understood as one or more values of the output of the function that takes the offset value of the d data blocks and the number and size of the d data blocks) . For different transmission times of N data blocks or different time slot numbers corresponding to the transmission of N data blocks, the offset value of the d data blocks and the number and size of the d data blocks are different.

In a possible implementation manner, the first parameter may include an index value of d data blocks in the N data blocks, an offset value of the d data blocks, and the number and size of the d data blocks, or may be the first parameter Including the value corresponding to the index value of d data blocks in the N data blocks, the offset value of the d data blocks and the number and size of the d data blocks (that is, it can be understood that the index value of the d data blocks, d The offset value of the data blocks and the number and size of the d data blocks are taken as one or more values of the output of the input function). For different transmission times of N data blocks or different time slot numbers corresponding to the transmission of N data blocks, the index value of d data blocks, the offset value of d data blocks, and the number and size of d data blocks may be different.

The above is a possible implementation manner, and this application does not make any specific limitation on the first parameter or the implementation manner in which the first parameter determines d data blocks out of N data blocks.

With reference to the first aspect, in some implementation manners of the first aspect, the first parameter is related to the number of transmissions of the N data blocks, including: for different transmission times, the first parameter is different.

That is, for different transmission times, d data blocks of the N data blocks determined according to the first parameter may be different.

In other words, for different transmission times, the first parameter may be different. Since the first parameter is different, the d data blocks among the N data blocks determined according to the first parameter are also different. That is, for different transmission times, at least one different data block exists in the determined d data blocks. That is to say, at least one different coding block exists among the M coding blocks generated for different transmission times.

With reference to the first aspect, in some implementation manners of the first aspect, for different transmission times, the offset values of d data blocks in the N data blocks are different; or, for different transmission times, the N The number and size of the d data blocks in the data blocks are different; or, for different transmission times, the index value of the d data blocks in the N data blocks and the offset of the d data blocks in the N data blocks The values are different; or, for different transmission times, the index values of the d data blocks in the N data blocks and the number and size of the d data blocks in the N data blocks are different; or, for different transmission times, The offset values of d data blocks in the N data blocks and the number and size of the d data blocks in the N data blocks are different; or, for different transmission times, d data in the N data blocks The index value of the block, the offset value of the d data blocks in the N data blocks, and the number and size of the d data blocks in the N data blocks are different.

Exemplarily, for different transmission times of N data blocks, the number of selected d data blocks may be the same and the index values of the d data blocks may be different, or the number of selected d data blocks may be different. Among them, one of the M coding blocks can be obtained by encoding d data blocks. Since the d data blocks have different transmission times, the M coding blocks are also different for different transmission times.

In the embodiment of the present application, for different transmission times of N data blocks/different time slot numbers corresponding to the transmission of N data blocks, there is at least one different M code block transmitted in each of two adjacent transmissions The coding block avoids multiple transmission failures caused by the same environmental interference when repeatedly transmitting the same coding block multiple times. Therefore, the data transmission method in the embodiments of the present application is beneficial to improve the reliability of data transmission and reduce the time of data transmission. Delay.

With reference to the first aspect, in some implementations of the first aspect, the method further includes: receiving a negative reply from at least one node device; sending a second group of coding blocks, where the second group of coding blocks includes M Coding block, and at least one different coding block exists in the second coding block group and the first coding block group.

It should be noted that, in the embodiment of the present application, the sending node may receive a negative reply sent by the receiving node. The negative reply may be NACK information or a scheduling request (SR) sent by any receiving node. Indicates that at least N coded blocks were not successfully decoded. A negative reply may be a trigger condition that triggers the sending node to retransmit data.

In a possible implementation manner, when the receiving node successfully decodes at least N encoding blocks in the first encoding block group, that is, when the receiving node can determine the information of the N data blocks sent by the sending node, the receiving node can send The node sends a positive reply.

In a possible implementation manner, when the receiving node successfully decodes at least N encoding blocks in the first encoding block group, that is, when the receiving node can determine the information of the N data blocks sent by the sending node, the receiving node can No negative reply or positive reply will be sent within the set duration.

With reference to the first aspect, in some implementation manners of the first aspect, the method further includes sending first information, where the first information is used to indicate a target device corresponding to at least one of the N data blocks.

Exemplarily, the first information may be used to indicate the target device corresponding to each of the N data blocks.

For example, the N data blocks may be two data blocks, and the two data blocks may respectively correspond to two receiving nodes, and the first information may be used to indicate that the first data block corresponds to the first receiving node, and used to indicate the second data. The block corresponds to the second receiving node.

Exemplarily, the first information may be used to indicate a target device corresponding to a part of the N data blocks.

For example, the N data blocks may be two data blocks, and the two data blocks may respectively correspond to two receiving nodes. The first information may be used to indicate that the first data block corresponds to the first receiving node, and the second data block may correspond to The second receiving node.

In a possible implementation manner, the first information may be carried in a radio resource control (RRC) message. The scheduling information may be carried in the same RRC message as the first information, or may be carried in a different RRC message than the first information; or, the scheduling information may also be in a physical downlink control channel (PDCCH). The scheduling information is used to indicate a first time-frequency resource, and the first time-frequency resource is used to carry the M code blocks.

It should be understood that the use of the first time-frequency resource to carry the M code blocks may be regarded as the pre-processing of the M code blocks and mapping to the first time-frequency resource.

In a possible implementation manner, the first information may be carried by the PDCCH, the scheduling information may be carried in the same PDCCH as the first information, or may be carried in a PDCCH different from the first information; or, the scheduling information may be carried In the RRC message.

With reference to the first aspect, in some implementation manners of the first aspect, the scheduling information may include at least one of the following information: physical resource block PRB, time domain resource, modulation and demodulation strategy (modulation and coding scheme, MCS), mapping mode and physical resource block binding size, wherein the mapping mode includes centralized resource mapping and distributed resource mapping.

Exemplarily, in the embodiment of the present application, the sending node may transmit scheduling information through multicast PDCCH, that is, downlink control information (downlink control information) carried on the multicast PDCCH between the sending node and the receiving node , DCI) to send physical resource blocks PRB, time domain resources, modulation and demodulation strategy MCS, mapping mode and physical resource block binding size, where the mapping mode includes centralized resource mapping and distributed resource mapping information At least one item.

Exemplarily, in the embodiment of the present application, the sending node may semi-statically configure resource transmission scheduling information through high-level signaling, that is, the physical resource block PRB and the time domain resource may be sent between the sending node and the receiving node through RRC signaling. , A modulation and demodulation strategy MCS, a mapping mode, and a physical resource block binding size, where the mapping mode includes at least one of centralized resource mapping and distributed resource mapping information.

Exemplarily, in the embodiment of the present application, the sending node may transmit the scheduling information through semi-static resource scheduling, and high-level signaling (for example, RRC signaling) may configure the period of the scheduling information. In semi-static scheduling In the system, resources (including uplink resources or downlink resources) are allocated or designated once by the PDCCH, and then the same physical resources can be reused periodically. The physical resources include frequency domain resources, code domain resources, air domain resources, and power domain resources. One or more.

Exemplarily, in the embodiment of the present application, the scheduling information of one of the M coding blocks may also be predefined, that is, the sending node and the receiving node use the predefined physical resource blocks PRB, time domain The resource, modulation and demodulation strategy MCS, mapping mode, etc. send and receive one of the M code blocks, respectively.

With reference to the first aspect, in some implementation manners of the first aspect, the first encoding method is a method of encoding using a fountain code.

For example, a sending node (or an encoding device) may encode N data blocks through an encoder (using, for example, a fountain code encoding method), thereby generating multiple (that is, M, the value of M may be infinite Or be regarded as infinite) coding blocks/coding units, or, to generate a codeword sequence of infinite length or can be regarded as infinite length, the receiving node can select at least N coding blocks among the M coding blocks/coding units / The encoding unit decodes, so that information of N data blocks can be obtained.

In a second aspect, a method for data transmission is provided, including: receiving a first group of encoded blocks, the first group of encoded blocks including M encoded blocks; decoding at least N encoded blocks of the M encoded blocks; Determining information of at least one data block among N data blocks according to a second parameter and the at least N coding blocks, wherein the second parameter is used to determine one of the at least N coding blocks and the Corresponding to d data blocks of N data blocks, the second parameter is related to the number of transmissions of the N data blocks, M and N are integers greater than 1 and M is greater than N, and d is an integer greater than or equal to 1 , And d is less than or equal to N.

In the data transmission method of the embodiment of the present application, the receiving node may decode at least N code blocks among the M code blocks, and determine the information of at least one data block among the N data blocks through the second parameter and the at least N code blocks. The second parameter is related to the number of transmissions of the N data blocks, that is, the second parameter may be different for different transmission times of the N data blocks or different time slot numbers corresponding to the transmission of the N data blocks, namely The information of at least one data block among the determined N data blocks may also be different. It avoids the influence of the same environmental interference during multiple repeated transmissions, resulting in the failure to obtain information for the same data block in multiple transmissions, resulting in the failure of the transmission of N data blocks. The data transmission method of the present application can increase the probability of successful data reception, reduce the number of retransmissions, improve the reliability of data transmission, and reduce the delay of data transmission.

It should be noted that, in the embodiment of the present application, the second parameter may be the same parameter as the first parameter. The second parameter may also be a parameter corresponding to the first parameter (for example, one or more parameters generated after processing the first parameter), which is not limited in this application.

"Transmission" in the embodiments of the present application should be flexibly understood, that is, "transmission" sometimes has the meaning of "sending" and sometimes has the meaning of "receiving". When the node is a receiving node, the receiving node can receive code blocks corresponding to N data blocks; when the node is a sending node, the sending node can send code blocks corresponding to N data blocks.

With reference to the second aspect, in some implementations of the second aspect, the second parameter includes an index value of d data blocks of the N data blocks, and an offset of d data blocks of the N data blocks At least one of the shift value or the number and size of the d data blocks in the N data blocks.

In a possible implementation, the second parameter may be the number of d data blocks in the N data blocks, which may be the value of d, or the value corresponding to d (that is, understandable (One or more values output by a function that takes d as input). For different transmission times of N data blocks, the value of d may be different.

In a possible implementation manner, the second parameter may be an index value of d data blocks out of N data blocks, or may be a value corresponding to the index value of d data blocks (that is, it can be understood as d The index value of the data block is taken as one or more values of the output of the input function). For different transmission times of N data blocks or different time slot numbers corresponding to the transmission of N data blocks, there is at least one difference in the determined index values of the d data blocks.

In a possible implementation manner, the second parameter may be an offset value of d data blocks out of N data blocks, or a value corresponding to the offset value of d data blocks (that is, it can be understood as The offset values of the d data blocks are taken as one or more values of the output of the input function). For different transmission times of N data blocks or different time slot numbers corresponding to the transmission of N data blocks, the offset value of the d data blocks may be different.

In a possible implementation manner, the second parameter may include the index value of d data blocks and the number and size of the d data blocks among the N data blocks. It may also be that the second parameter includes a value corresponding to the index value of the d data blocks and the number and size of the d data blocks (that is, it can be understood that the index value of the d data blocks and the number and size of the d data blocks are used as input One or more values of the function's output). For different transmission times of N data blocks or different time slot numbers corresponding to the transmission of N data blocks, the index value of the d data blocks and the number and size of the d data blocks may be different.

In a possible implementation manner, the second parameter may include an index value of d data blocks and an offset value of d data blocks among N data blocks, or the second parameter may include an index with d data blocks The value corresponding to the offset value of the d data blocks (that is, one or more values of the output of the function that takes the index value of the d data blocks and the offset value of the d data blocks as input) . For different transmission times of N data blocks or different time slot numbers corresponding to transmission of N data blocks, the index value of d data blocks and the offset value of d data blocks may be different.

In a possible implementation, the second parameter may include the offset value of d data blocks and the number and size of the d data blocks in the N data blocks, or the second parameter may include the offset from the d data blocks The value corresponding to the shift value and the number and size of the d data blocks (that is, it can be understood as one or more values of the output of the function that takes the offset value of the d data blocks and the number and size of the d data blocks as input) . For different transmission times of N data blocks or different time slot numbers corresponding to the transmission of N data blocks, the offset value of the d data blocks and the number and size of the d data blocks are different.

In a possible implementation manner, the second parameter may include an index value of d data blocks in the N data blocks, an offset value of the d data blocks, and the number and size of the d data blocks, or may be the second parameter Including the value corresponding to the index value of d data blocks in the N data blocks, the offset value of the d data blocks and the number and size of the d data blocks (that is, it can be understood that the index value of the d data blocks, d The offset value of the data blocks and the number and size of the d data blocks are taken as one or more values of the output of the input function). For different transmission times of N data blocks or different time slot numbers corresponding to the transmission of N data blocks, the index value of d data blocks, the offset value of d data blocks, and the number and size of d data blocks may be different.

The above is a possible implementation manner, and this application does not make any specific limitation on the implementation manner of the second parameter.

With reference to the second aspect, in some implementation manners of the second aspect, the second parameter is related to the number of transmissions of the N data blocks, including: for different transmission times, the second parameter is different.

With reference to the second aspect, in some implementations of the second aspect, for different transmission times, the index values of d data blocks in the N data blocks are different; or, for different transmission times, the N The offset values of the d data blocks in the data block are different; or, for different transmission times, the number and size of the d data blocks in the N data blocks are different; or, for different transmission times, the N data The index values of the d data blocks in the block are different from the offset values of the d data blocks in the N data blocks; or, for different transmission times, the index values of the d data blocks in the N data blocks and The number and size of the d data blocks in the N data blocks are different; or, for different transmission times, the offset value of the d data blocks in the N data blocks and the d data in the N data blocks The number and size of the blocks are different; or, for different transmission times, the index values of d data blocks in the N data blocks, the offset values of the d data blocks in the N data blocks, and the N data The number and size of the d data blocks in the block are different.

With reference to the second aspect, in some implementations of the second aspect, the method further includes: when the at least N encoded blocks are not correctly decoded, sending a negative reply; receiving a second group of encoded blocks, the second encoding The block group includes M coding blocks, and at least one different coding block exists in the second coding block group and the first coding block group.

It should be noted that, in the embodiment of the present application, the above-mentioned negative reply may be a negative reply sent by the receiving node to the sending node, and the negative reply may be NACK information or a scheduling request (SR) sent by any receiving node. Used to indicate that at least N coded blocks were not successfully decoded. A negative reply may be a trigger condition that triggers the sending node to retransmit data.

In a possible implementation manner, when the receiving node successfully decodes at least N encoding blocks in the first encoding block group, that is, when the receiving node can determine the information of the N data blocks sent by the sending node, the receiving node may No negative reply or positive reply will be sent within the set duration.

With reference to the second aspect, in some implementation manners of the second aspect, the method further includes: receiving first information, where the first information is used to indicate a target device corresponding to at least one of the N data blocks.

In a possible implementation manner, the first information may be carried in an RRC message. The scheduling information may be carried in the same RRC message as the first information, or may be carried in a different RRC message than the first information; or, the scheduling information may also be in the PDCCH. The scheduling information is used to indicate a first time-frequency resource, and the first time-frequency resource is used to carry the M code blocks.

In a possible implementation manner, the first information may be carried in the PDCCH, the scheduling information may be carried in the same PDCCH as the first information, or may be carried in a PDCCH different from the first information; or, the scheduling information may be It is carried in the RRC message.

With reference to the second aspect, in some implementation manners of the second aspect, the scheduling information may include at least one of the following information: physical resource block PRB, time domain resource, modulation and demodulation strategy MCS, mapping mode, and physical The resource block binding size, wherein the mapping mode includes centralized resource mapping and distributed resource mapping.

Exemplarily, in the embodiment of the present application, the receiving node may transmit scheduling information through multicast PDCCH, that is, the receiving node and the sending node may send physical information through the downlink control information DCI carried on the multicast PDCCH. Resource block PRB, time domain resource, modulation and demodulation strategy MCS, mapping mode, and physical resource block binding size, where the mapping mode includes at least one of centralized resource mapping and distributed resource mapping information.

Exemplarily, in the embodiment of the present application, the receiving node may semi-statically configure resource transmission scheduling information through high-level signaling, that is, the physical resource block PRB and the time domain resource may be sent between the receiving node and the sending node through RRC signaling. , A modulation and demodulation strategy MCS, a mapping mode, and a physical resource block binding size, where the mapping mode includes at least one of centralized resource mapping and distributed resource mapping information.

Exemplarily, in the embodiment of the present application, the receiving node may transmit the scheduling information through semi-static resource scheduling, and high-level signaling (for example, RRC signaling) may configure the period of the scheduling information. In semi-static scheduling In the system, resources (including uplink resources or downlink resources) are allocated or designated once by the PDCCH, and then the same physical resources can be reused periodically. The physical resources can be frequency domain resources, code domain resources, air domain resources, and power domain resources One or more of them.

With reference to the second aspect, in some implementation manners of the second aspect, the first encoding method is a method that uses fountain codes for encoding.

For example, a sending node (or an encoding device) may encode N data blocks through an encoder (using, for example, a fountain code encoding method), thereby generating multiple (that is, M, the value of M may be infinite ) Coding block/coding unit, or to produce a codeword sequence of infinite length or can be regarded as infinite length, the receiving node can obtain information of N data blocks by decoding any at least N coding blocks/coding units .

In a third aspect, an apparatus is provided for performing the method in the first aspect or any possible implementation manner of the first aspect. Specifically, the device includes a unit for performing the method in the first aspect or any possible implementation manner of the first aspect.

According to a fourth aspect, an apparatus is provided for performing the method in the second aspect or any possible implementation manner of the second aspect. Specifically, the device includes a unit for performing the method in the second aspect or any possible implementation manner of the second aspect.

In a fifth aspect, an apparatus is provided that includes a processor. The processor is coupled to the memory and can be used to execute the instructions in the memory to implement the first aspect or the method in any possible implementation manner of the first aspect.

Optionally, the device also includes a memory.

Optionally, the communication device further includes a communication interface, and the processor is coupled to the communication interface.

In one implementation, the device is a sending node. When the device is a sending node, the communication interface may be a transceiver or an input/output interface.

In another implementation, the device is a chip configured in the sending node. When the device is a chip configured in the sending node, the communication interface may be an input/output interface of the chip.

Optionally, the transceiver may be a transceiver circuit. Optionally, the input/output interface may be an input/output circuit.

Exemplarily, the apparatus may include a transceiver unit, and the transceiver unit may include a receiving unit and a sending unit. For example, the sending unit may be a transmitter and the receiving unit may be a receiver; the apparatus may further include a processing unit, and the processing unit may be a processor; the apparatus may further include a storage unit, the storage unit may be a memory; the storage unit For storing instructions, the processing unit executes the instructions stored in the storage unit, so that the device executes the method in the first aspect or any possible implementation manner of the first aspect. When it is a chip in the device, the processing unit may be a processor, and the receiving unit/transmitting unit may be an input/output interface, a pin or a circuit, etc.; the processing unit executes instructions stored in the storage unit to make the device To execute the method in the above first aspect or any possible implementation manner of the first aspect, the storage unit may be a storage unit (for example, a register, a cache, etc.) in the chip, or may be a device located outside the chip in the device Storage unit (for example, read only memory, random access memory, etc.).

In a sixth aspect, an apparatus is provided, including a processor. The processor is coupled to the memory, and can be used to execute instructions in the memory to implement the second aspect or the method in any possible implementation manner of the second aspect.

Optionally, the device also includes a memory.

In one implementation, the device is a receiving node. When the device is a receiving node, the communication interface may be a transceiver or an input/output interface.

In another implementation, the device is a chip configured in the receiving node. When the device is a chip configured in a receiving node, the communication interface may be an input/output interface of the chip.

Exemplarily, the apparatus may include a transceiver unit, and the transceiver unit may include a receiving unit and a sending unit. For example, the sending unit may be a transmitter and the receiving unit may be a receiver; the apparatus may further include a processing unit, and the processing unit may be a processor; the apparatus may further include a storage unit, the storage unit may be a memory; the storage unit For storing instructions, the processing unit executes the instructions stored by the storage unit, so that the device executes the method in the second aspect or any possible implementation manner of the second aspect. When it is a chip in the device, the processing unit may be a processor, and the receiving unit/transmitting unit may be an input/output interface, a pin or a circuit, etc.; the processing unit executes instructions stored in the storage unit to make the device To execute the method in the second aspect or any possible implementation manner of the second aspect, the storage unit may be a storage unit (for example, a register, a cache, etc.) in the chip, or may be a device located outside the chip in the device Storage unit (for example, read only memory, random access memory, etc.).

According to a seventh aspect, a processor is provided, including: an input circuit, an output circuit, and a processing circuit. The processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor executes the method in any aspect and any possible implementation manner of any aspect.

In a specific implementation process, the processor may be a chip, the input circuit may be an input pin, the output circuit may be an output pin, and the processing circuit may be a transistor, a gate circuit, a flip-flop, and various logic circuits. The input signal received by the input circuit may be received and input by, for example, but not limited to a receiver, the signal output by the output circuit may be, for example but not limited to, output to and transmitted by the transmitter, and the input circuit and output The circuit may be the same circuit, which is used as an input circuit and an output circuit at different times, respectively. The embodiments of the present application do not limit the specific implementation manners of the processor and various circuits.

In an eighth aspect, a processing device is provided, including a processor and a memory. The processor is used to read instructions stored in the memory, and may receive signals through the receiver and transmit signals through the transmitter to perform the method in any aspect and any possible implementation manner of the first aspect.

Optionally, there are one or more processors and one or more memories.

Alternatively, the memory may be integrated with the processor, or the memory and the processor are provided separately.

In the specific implementation process, the memory may be a non-transitory (non-transitory) memory, such as a read-only memory (read only memory, ROM), which may be integrated with the processor on the same chip, or may be separately set in different On the chip, the embodiments of the present application do not limit the type of memory and the manner of setting the memory and the processor.

It should be understood that the relevant data interaction process, for example, sending the first encoding block group may be a process of outputting the first encoding block group from the processor, and receiving the first encoding block group may be a process of receiving the first encoding block group by the processor. Specifically, the processed output data may be output to the transmitter, and the input data received by the processor may come from the receiver. Among them, the transmitter and the receiver may be collectively referred to as a transceiver.

A processing device in the above eighth aspect may be a chip, and the processor may be implemented by hardware or software. When implemented by hardware, the processor may be a logic circuit, an integrated circuit, etc.; when passed When implemented in software, the processor may be a general-purpose processor, implemented by reading software codes stored in a memory, the memory may be integrated in the processor, and may be located outside the processor and exist independently.

In a ninth aspect, a computer program product is provided. The computer program product includes: a computer program (also referred to as code or instructions) that, when the computer program is executed, causes the computer to perform any of the above aspects and tasks. Any possible implementation of the method in one aspect.

According to a tenth aspect, there is provided a computer-readable medium that stores a computer program (also may be referred to as code or instructions) that when executed on a computer, causes the computer to perform any of the above aspects and tasks. Any possible implementation of the method in one aspect.

In an eleventh aspect, a communication system is provided, including any one or more of the following: the foregoing sending node, and the foregoing receiving node.

BRIEF DESCRIPTION

FIG. 1 is a schematic diagram of an application scenario of an embodiment of this application;

2 is a schematic diagram of multiple retransmissions according to the prior art;

3 is a schematic diagram of a data transmission method according to an embodiment of the present application;

4 is a schematic structural diagram of a device according to an embodiment of the present application;

5 is a schematic block diagram of another device according to an embodiment of the present application;

6 is a schematic block diagram of another device according to an embodiment of the present application;

7 is a schematic block diagram of another device according to an embodiment of the present application;

8 is a schematic block diagram of another device according to an embodiment of the present application.

detailed description

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

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: global mobile communication (global system for mobile communications, GSM) system, code division multiple access (code division multiple access (CDMA) system, broadband code division multiple access) (wideband code division multiple access (WCDMA) system, general packet radio service (general packet radio service, GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE Time division duplex (time division duplex, TDD), universal mobile communication system (universal mobile telecommunication system, UMTS), global interconnected microwave access (worldwide interoperability for microwave access, WiMAX) communication system, future fifth generation (5th generation, 5G) system or new radio (NR), etc.

The terminal device in the embodiment of the present application may refer to user equipment, access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or User device. Terminal devices can also be cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (wireless local loop (WLL) stations, personal digital assistants (personal digital assistants, PDAs), wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in future 5G networks or public land mobile communication networks (PLMN) in the future evolution The terminal device and the like are not limited in this embodiment of the present application.

The network device in the embodiment of the present application may be a device for communicating with a terminal device, and the network device may be a global system for mobile (GSM) system or code division multiple access (CDMA) The base transceiver station (BTS) in the system can also be a base station (NodeB, NB) in a wideband code division multiple access (WCDMA) system, or an evolved base station (evolved) in an LTE system NodeB, eNB or eNodeB), or a wireless controller in a cloud radio access network (CRAN) scenario, or the network device can be a relay station, an access point, an in-vehicle device, a wearable device, and future Network devices in a 5G network or network devices in a PLMN network that will evolve in the future are not limited in the embodiments of the present application.

It should be noted that the data transmission method according to the embodiment of the present application can also be applied to a vehicle-to-X (V2X) communication system, where V2X may specifically include V2V (Internet of Vehicles) and V2P (vehicles and pedestrians) Communication), V2I/N (automotive and infrastructure communication/network, base station communication) three application requirements. V2V refers to communication between vehicles based on LTE; V2P refers to communication between vehicles based on LTE and people (including pedestrians, cyclists, drivers, or passengers); V2I refers to vehicles based on LTE and roadside units (roadside unit, RSU) communication, and another kind of V2N can be included in V2I, V2N refers to the communication between LTE-based vehicles and base stations/networks.

In the embodiments of the present application, the terminal device or the network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes central processing unit (CPU), memory management unit (memory management unit, MMU), and memory (also called main memory) and other hardware. The operating system may be any one or more computer operating systems that implement business processes through processes, for example, a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. The application layer includes browser, address book, word processing software, instant messaging software and other applications. Moreover, the embodiment of the present application does not specifically limit the specific structure of the execution body of the method provided in the embodiment of the present application, as long as it can run the program that records the code of the method provided by the embodiment of the present application to provide according to the embodiment of the present application The method may be used for communication. For example, the execution body of the method provided in the embodiments of the present application may be a terminal device or a network device, or a functional module in the terminal device or network device that can call a program and execute the program.

In addition, various aspects or features of the present application may be implemented as methods, devices, or articles using standard programming and/or engineering techniques. The term "article of manufacture" as used in this application encompasses a computer program accessible from any computer-readable device, carrier, or medium. For example, the computer-readable medium may include, but is not limited to: magnetic storage devices (for example, hard disks, floppy disks, or magnetic tapes, etc.), optical disks (for example, compact discs (CDs), digital universal discs (digital discs, DVDs)) Etc.), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.). In addition, the various storage media described herein may represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and/or carrying instructions and/or data.

FIG. 1 is a schematic diagram of a system 100 that can apply the data transmission method according to an embodiment of the present application. As shown in FIG. 1, the system 100 includes an access network device 102. The access network device 102 may include one antenna or multiple antennas, for example,

antennas

104, 106, 108, 110, 112, and 114. In addition, the access network device 102 may additionally include a transmitter chain and a receiver chain. Those of ordinary skill in the art will understand that they can include multiple components related to signal transmission and reception (such as processors, modulators, multiplexers, etc.). Device, demodulator, demultiplexer or antenna, etc.).

The access network device 102 can communicate with multiple terminal devices (eg, terminal device 116 and terminal device 122). However, it can be understood that the access network device 102 can communicate with any number of terminal devices similar to the terminal device 116 or the terminal device 122.

Terminal devices

116 and 122 may be, for example, cellular phones, smart phones, portable computers, handheld communication devices, handheld computing devices, satellite radios, global positioning systems, PDAs, and/or any other devices used to communicate on wireless communication system 100 Suitable for equipment.

As shown in FIG. 1, the terminal device 116 communicates with the

antennas

112 and 114, where the

antennas

112 and 114 send information to the terminal device 116 through the forward link (also called downlink) 118 and through the reverse link (also Known as the uplink) 120 receives information from the terminal device 116. In addition, the terminal device 122 communicates with the

antennas

104 and 106, where the

antennas

104 and 106 transmit information to the terminal device 122 via the forward link 124 and receive information from the terminal device 122 via the reverse link 126.

For example, in a frequency division duplex (FDD) system, for example, the forward link 118 may use a different frequency band from the reverse link 120, and the forward link 124 may use a different frequency band from the reverse link 126 Frequency band.

As another example, in a time division duplex (TDD) system and a full duplex (full duplex) system, the forward link 118 and the reverse link 120 may use a common frequency band, the forward link 124 and the reverse link The link 126 may use a common frequency band.

Each antenna (or antenna group consisting of multiple antennas) and/or area designed for communication is called a sector of the access network device 102. For example, the antenna group may be designed to communicate with terminal devices in sectors in the coverage area of the access network device 102. The access network device may transmit signals to all terminal devices in its corresponding sector through single antenna or multi-antenna transmit diversity. In the process of the access network device 102 communicating with the

terminal devices

116 and 122 through the

forward links

118 and 124, respectively, the transmit antenna of the access network device 102 can also use beamforming to improve the

forward link

118 and 124 Signal-to-noise ratio. In addition, compared to the way that the access network device transmits signals to all its terminal devices through a single antenna or multiple antenna transmit diversity, the access network device 102 uses beamforming to randomly disperse the

terminal devices

116 and 122 in the relevant coverage area When sending a signal, mobile devices in neighboring cells will suffer less interference.

At a given time, the access network device 102, the terminal device 116, or the terminal device 122 may be a wireless communication transmitting device and/or a wireless communication receiving device. When transmitting data, the wireless communication transmitting device may encode the data for transmission. Specifically, the wireless communication transmitting device may acquire (eg, generate, receive from other communication devices, or store in a memory, etc.) a certain number of data bits to be transmitted to the wireless communication receiving device through the channel. Such data bits may be contained in a transport block (or multiple transport blocks) of data, and the transport block may be segmented to produce multiple code blocks.

In addition, the communication system 100 may be a PLMN network, a device-to-device (D2D) network, a machine-to-machine (M2M) communication network, an Internet of Things (IoT) network, or other The network, FIG. 1 is only a simplified schematic diagram of an example, and the network may also include other access network devices, which are not shown in FIG. 1.

It should be understood that the access network device 102 may be the sending node in the embodiment of the present application, and any number of terminal devices similar to the terminal device 116 or the terminal device 122 may be the receiving node or the target device in the embodiment of the present application. In addition, the sending node in the embodiment of the present application may also be a programmable logic controller (programmable logic controller, PLC) in the industrial Internet, and the receiving node may be any number of automatic guided devices (automated guided vehicle, AGV) in the industrial Internet. ), this application does not limit this.

When the network device communicates with the terminal device, the UE data of the application layer is finally mapped onto the PDSCH or PUSCH channel. The UE data of the application layer can be mapped onto the PDSCH channel of the UE, that is, a part of the PRB resources can only transmit data information corresponding to a certain UE.

During the transmission of data information, it will be affected by the transmission environment. For example, in an industrial Internet system, the impulse noise of the industrial Internet may be affected during data transmission. Among them, the electromagnetic impulse noise that affects 3GHz to 6GHz communication can be divided into two categories:

The first type of electromagnetic impulse noise (case1): high frequency, long time, periodic single pulse.

The second type of electromagnetic impulse noise (case2): bursts with high frequency, random pulse length and random arrival rate.

When a part of PRB resources are interfered by the electromagnetic pulse noise of case1 and case2, the terminal device cannot correctly demodulate the data information on the PDSCH channel, thereby causing the network device to perform data retransmission. However, during the retransmission process, the terminal device may be interfered by the same electromagnetic pulse noise, resulting in the terminal device still being unable to correctly demodulate the data information, and eventually the second data transmission fails. Therefore, in the case of interference by the transmission environment, the terminal device may need to be retransmitted multiple times in the process of data transmission to correctly demodulate the data information, but multiple retransmissions may result in failure to meet the delay requirement.

For example, as shown in FIG. 2, it is assumed that the downlink bandwidth includes 100 PRBs, among which PRB1 to PRB50 are used to transmit AGV2 data, and PRB51 to PRB100 are used to transmit AGV1 data. Because AGV1 and AGV2 are in different geographic locations, the electromagnetic pulse noise that AGV1 and AGV2 may receive when receiving signals is different. Suppose that, during the first reception, AGV1 is interfered on PRB51-PRB100 of symbol 1, and AGV2 is interfered on PRB1-PRB50 of symbol 2, which leads to the incorrect demodulation of AGV1 and AGV2 during the first reception The data requires a second transmission. If the second transmission AGV1 and AGV2 are subject to the same electromagnetic pulse interference, the second transmission still fails to receive. Therefore, the third transmission AGV may be required to correctly demodulate the data information sent to it by the PLC.

In the case of interference from the transmission environment, if the network device retransmits the same data every time, it may cause the terminal device to be retransmitted multiple times to meet the reliability requirements of the data information. Delay requirements.

In the case of interference from the transmission environment, how to reduce the number of data retransmissions under the premise of satisfying the reliability of data transmission is a problem worthy of study.

In view of this, the embodiments of the present application provide a data transmission method, so that the sending node (for example, a network device) can enable the receiving node to correctly demodulate the data information through a relatively small number of retransmissions. For example, when the sending node needs to send N data blocks, the sending node can encode the N data blocks using the first encoding method to generate M code blocks corresponding to the N data blocks, where M is greater than or equal to N. A coding method allows the receiving node to recover the original data information when correctly decoding at least N coded blocks, that is, when the receiving node correctly decodes at least N coded blocks, it can correctly demodulate N data block information. In addition, when the first encoding method is used for retransmission, the information of the transmitted coding block is different from the information of the previously transmitted coding block.

FIG. 3 shows a schematic flowchart of a data transmission method 200 according to an embodiment of the present application. The method 200 can be applied to the communication system 100 shown in FIG. 1, but the embodiments of the present application are not limited thereto. Optionally, the method 200 can also be applied to vehicle-to-X (V2X), device-to-device (D2D) direct connection communication, relay communication, and other communication systems.

S210. The sending node (or encoding end) may encode the N data blocks that need to be sent to the receiving node (or decoding end) in the first encoding mode to generate M encoding blocks. Wherein, one of the M encoding blocks is an encoding block obtained by encoding d data blocks of the N data blocks, and the first parameter in the first encoding mode is used to determine the For d data blocks of N data blocks, the first parameter is related to the number of transmissions of the N data blocks, M and N are integers greater than 1 and M is greater than or equal to N, and d is greater than or equal to 1. Integer, and d is less than or equal to N.

Exemplarily, in the embodiment of the present application, the sending node may encode the N data blocks in the first encoding mode to generate M code blocks corresponding to the N data blocks, and the M code blocks may be N data blocks. An encoding block with an equal number of blocks (that is, M may be equal to N), or an encoding block that is greater than N data blocks (that is, M may be greater than N).

It should be noted that, for different transmission times of N data blocks or different time slot numbers corresponding to transmission of N data blocks, the first parameter may be different. Since the first parameter is different, the d data blocks of the N data blocks determined according to the first parameter are also different. That is, for different transmission times or different time slot numbers, at least one different data block exists in the determined d data blocks. That is to say, at least one different coding block exists among the M coding blocks generated for different transmission times.

It should be understood that one transmission of N data blocks can be understood as one transmission of N data blocks as a whole. The N data blocks are transmitted as a whole, which may be a transmission after encoding at least one of the N data blocks, that is, a transmission of the encoding block corresponding to at least one of the N data blocks can be seen The operation is a transmission of N data blocks.

It should also be understood that “transmission” in the embodiments of the present application should be flexibly understood, that is, “transmission” sometimes has the meaning of “sending” and sometimes has the meaning of “receiving”. When the node is a sending node, the sending node can send code blocks corresponding to N data blocks; when the node is a receiving node, the receiving node can receive code blocks corresponding to N data blocks.

In the embodiments of the present application, one data block may be a set of bits. For example, the data block may be a set of bits to be sent by the sending node; or, it may be a set of bits to be received by the receiving node.

In the embodiment of the present application, the receiving node may decode at least N code blocks out of the M code blocks during initial transmission by the sending node, so that at least one data block among the N data blocks may be determined according to the second parameter Information. The receiving node may also be that after the sending node performs one or more retransmissions, at least N of the M encoded blocks are successfully decoded, so that at least one of the N data blocks can be determined according to the second parameter information. During one or more retransmissions, at least one different coding block exists in the M coding blocks transmitted in each of the two adjacent transmissions.

For example, for a successful transmission (for example, when the initial transmission is successful), it may be that the receiving node successfully decodes at least N data blocks of the M code blocks, so that at least one data block of the N data blocks can be obtained according to the second parameter Information. For two transmissions of N data blocks (for example, initial transmission and retransmission), it may be that the receiving node successfully decodes at least N of the 2M coding blocks, so that at least N of the N data blocks can be obtained according to the second parameter Information about a data block. That is to say, for transmission X times, it may be that the receiving node successfully decodes at least N coding blocks among the X*M coding blocks, so that information of at least one data block among the N data blocks may be obtained according to the second parameter.

In an embodiment of the present application, the first parameter may include an index value of d data blocks of the N data blocks, an offset value of d data blocks of the N data blocks, or the N number of data blocks At least one of the number and size of the d data blocks in the data block.

In the embodiment of the present application, for different transmission times of N data blocks or different time slot numbers corresponding to transmission of N data blocks, the first parameter may be different.

In a possible implementation manner, different transmission times of N data blocks or different time slot numbers corresponding to N data blocks may be used as the input variable x, then the index value of d data blocks in the N data blocks The value of the function f(x) as the output. For different transmission times of N data blocks or different time slot numbers corresponding to the transmission of N data blocks, the index values of d data blocks may be different.

In a possible implementation manner, different transmission times of N data blocks or different time slot numbers corresponding to N data blocks may be used as an input variable x, then the offset of d data blocks among N data blocks The value is taken as the value of the output function f(x). For different transmission times of N data blocks or different time slot numbers corresponding to the transmission of N data blocks, the offset value of the d data blocks may be different.

In a possible implementation manner, different transmission times of N data blocks or different time slot numbers corresponding to N data blocks may be used as an input variable x, then the number of d data blocks in the N data blocks The value of the function f(x) as the output. For different transmission times of N data blocks or different time slot numbers corresponding to the transmission of N data blocks, the value of d may be different.

In a possible implementation manner, different transmission times of N data blocks or different time slot numbers corresponding to N data blocks may be used as the input variable x, then the index value of d data blocks in the N data blocks The offset value of the d data blocks is used as the value of the output function f(x). For different transmission times of N data blocks or different time slot numbers corresponding to transmission of N data blocks, the index value of d data blocks and the offset value of d data blocks may be different.

In a possible implementation manner, different transmission times of N data blocks or different time slot numbers corresponding to N data blocks may be used as the input variable x, then the index value of d data blocks in the N data blocks The number and size of the d data blocks are used as the value of the output function f(x). For different transmission times of N data blocks or different time slot numbers corresponding to the transmission of N data blocks, the index value of the d data blocks and the number and size of the d data blocks may be different.

In a possible implementation manner, different transmission times of N data blocks or different time slot numbers corresponding to N data blocks may be used as an input variable x, then the offset of d data blocks among N data blocks The value and the number of d data blocks are used as the value of the output function f(x). For different transmission times of N data blocks or different time slot numbers corresponding to the transmission of N data blocks, the offset value of the d data blocks and the number and size of the d data blocks may be different.

In a possible implementation manner, different transmission times of N data blocks or different time slot numbers corresponding to N data blocks may be used as the input variable x, then the index value of d data blocks in the N data blocks , The offset value of the d data blocks and the number and size of the d data blocks are taken as the value of the output function f(x). For different transmission times of N data blocks or different time slot numbers corresponding to the transmission of N data blocks, the index value of d data blocks, the offset value of d data blocks, and the number and size of d data blocks may be different.

It can be understood that the function f(x) in this application indicates that there is a correspondence between the input parameter x and the output parameter of the function f(x). Further, the corresponding relationship is determined by the function.

Exemplarily, the first parameter may be an index value of d data blocks among N data blocks. That is, the first parameter may be the number of d data blocks. The number of d data blocks may be the same for different transmission times or for the time slot numbers corresponding to the transmission of N data blocks. When the number of d data blocks is the same, different transmission times or time slot numbers corresponding to N data blocks are transmitted, and there is at least one difference in the index value of the corresponding d data blocks.

For example, the N data blocks may be 5 data blocks with index values (numbers) #1 to #5. For the first coded block transmitted for the first time, the first parameter may be the number of d = 2 data blocks #1 and #2, the first coding block can pass

(Where X1 can represent a data block with an index value of 1, and X2 can represent a data block with an index value of 2) obtained; for the first encoded block of the second transmission, the first parameter can be d = 2 data blocks Numbers #2 and #3, that is, the first coded block in the second transmission can be

(X3 can represent a data block with an index value of 3). That is to say, during two transmissions, at different transmission times, the first parameter, that is, the index of d data blocks in N data blocks may be different.

Exemplarily, the first parameter may include a time slot number corresponding to the N data blocks and an index value of d data blocks. For example, the N data blocks may be 5 data blocks with index values (numbers) #1 to #5. The first transmission is in slot #0, the second transmission is in slot #6, and for slot #0 For the first coding block transmitted on the Internet, the first parameter can be d = 2 data block numbers #(1+0 mod 5) and #(2+0 mod 5), that is, d=2 data block numbers are # 1 and #2, the first coding block can be

(Where X1 can represent a data block with an index value of 1, and X2 can represent a data block with an index value of 2); for the first coded block transmitted on time slot #6, the first parameter can be d = 2 data The block numbers #(1+6 mod 5) and #(2+6 mod 5), that is, the number of d=2 data blocks are #2 and #3, that is, the first coded block in the second transmission can be

(X3 can represent a data block with an index value of 3). That is to say, during two transmissions, different time slot numbers corresponding to N data blocks are transmitted, the first parameter includes the time slot numbers corresponding to the transmission of the N data blocks, and the first parameter includes d data blocks The index value can also be different.

It should be noted that when the first parameter is a parameter set, the parameter set may include multiple parameters. For two transmissions of N data blocks, the two transmissions correspond to two different parameter sets. The two different parameter sets mean that at least one different parameter may exist in the two parameter sets. The above description of the first parameter is applicable to all the embodiments in this application.

For example, the above-mentioned first parameter may include a slot number corresponding to the N data blocks and an index value of d data blocks. For two transmissions of N data blocks, the first parameter may include that the timeslot numbers corresponding to the transmission of the N data blocks are the same, and the index values of the d data blocks included in the first parameter are different. It may also be that the time slot number corresponding to the transmission of the N data blocks included in the first parameter is different, and the index values of the d data blocks included in the first parameter are also different.

Exemplarily, the first parameter may be a value of d data blocks out of N data blocks. For different transmission times of N data blocks or different time slot numbers corresponding to the transmission of N data blocks, the number of d data blocks may be different.

For example, N data blocks may be 5 data blocks with index values (numbers) #1 to #5. For the first encoded block transmitted for the first time, the first parameter may be the number of d data blocks, That is, the value of d is 2, and the data block numbers #1 and #2 can be determined according to d=2, that is, the first coding block can be

(Where X1 can represent a data block with an index value of 1, and X2 can represent a data block with an index value of 2); for the first encoded block of the second transmission, the first parameter can be the number of d data blocks , That is, the value of d is 3, and further according to d=3, it can be determined that the data block numbers are #1, #2, and #3, that is, the first coding block in the second transmission may be

(X3 can represent a data block with an index value of 3). That is to say, during two transmissions, with different transmission times, the first parameter, that is, the number and size of the d data blocks in the N data blocks may be different.

For example, the N data blocks may be 5 data blocks with index values (numbers) #1 to #5. The first transmission is in slot #0, the second transmission is in slot #6, and for slot #0 For the first coding block transmitted on the Internet, the first parameter can be the number and size of data blocks d=2, and the data block numbers #1 and #2 can be determined according to d=2, that is, the first coding block can be

(Where X1 can represent a data block with an index value of 1, and X2 can represent a data block with an index value of 2); for the first coded block transmitted on time slot #6, the first parameter can be the number of data blocks d=3, according to d=3, it can be determined that the data block numbers are #1, #2, and #3, that is, the first coded block in the second transmission may be

(X3 can represent a data block with an index value of 3). That is to say, for two times of transmission, different time slot numbers corresponding to N data blocks are transmitted, and the first parameter, that is, the number and size of the d data blocks in the N data blocks may be different.

Exemplarily, the first parameter may include the number and size of the d data blocks in the N data blocks and the index value of the d data blocks. For different transmission times of N data blocks, or different time slot numbers corresponding to the transmission of N data blocks, the first parameter may be different.

For example, the N data blocks may be 5 data blocks with index values (numbers) #1 to #5. For the first encoded block transmitted for the first time, the first parameter may include the number and size of the data blocks and the data blocks The index value of can be d = 2 and d = 2 data block numbers #1 and #2, that is, the first coding block can be

(Where X1 can represent a data block with an index value of 1, and X2 can represent a data block with an index value of 2); for the first encoded block of the second transmission, the first parameter can be the number of data blocks and the size of the data The index value of the block can be the number #2, #3 and #4 of d=3 and d=3 data blocks, that is, the first coded block in the second transmission can be

(X3 may represent a data block with an index value of 3, and X4 represents a data block with an index value of 4). That is to say, during two transmissions, the number of d included in the first parameter may be different for different transmission times, and the index values of the d data blocks included in the first parameter may also be different.

For example, the N data blocks may be 5 data blocks with index values (numbers) #1 to #5. The first transmission is in slot #0, the second transmission is in slot #6, and for slot #0 In the first coding block transmitted on the first, the first parameter can be the number of data blocks and the index value of the data block, that is, the number #1 and #2 of d=2 and d=2 data blocks, that is, the first An encoding block can be

(Where X1 can represent a data block with an index value of 1, and X2 can represent a data block with an index value of 2); for the first coded block transmitted on time slot #6, the first parameter can be d=3 and d = 3 data block numbers #(1+6 mod 5), #(2+6 mod 5) and #(3+6 mod 5), that is, d=3 data block numbers are #2, #3 and #4, that is, the first coding block in the second transmission can be

(X3 represents a data block with an index value of 3, and X4 represents a data block with an index value of 4). That is to say, during two transmissions, different time slot numbers corresponding to N data blocks are transmitted, the number and size of d included in the first parameter may be different, and the indexes of the d data blocks included in the first parameter may also be different.

Exemplarily, the first parameter may be an offset value of d data blocks among N data blocks. For different transmission times of N data blocks or different time slot numbers corresponding to the transmission of N data blocks, the first parameter, that is, the offset values of d data blocks in the N data blocks may be different.

For example, for example, N data blocks may be 5 data blocks with index values (numbers) #1 to #5. Assuming that the number of d data blocks is 2, for the first encoded block transmitted for the first time, The first parameter may be the offset value of d data blocks out of the N data blocks, that is, the offset value relative to the data block numbered #1 is 0, and the two numbers #1 and #2 may be determined Data blocks, the first coding block can be

(Where X1 can represent a data block with an index value of 1, and X2 can represent a data block with an index value of 2); for the first encoded block of the second transmission, the first parameter can be d of N data blocks The offset value of the data block can be understood as the offset value relative to the data block with the number #1 of 1, and the two data blocks with the numbers #2 and #3 can be determined, that is, the first time in the second transmission Coding blocks can be

(X3 can represent a data block with an index value of 3). That is to say, during two transmissions, the number of d included in the first parameter may be different for different transmission times, and the index values of the d data blocks included in the first parameter may be different.

It should be understood that the above is a possible implementation manner, and this application does not make any specific limitation on the first parameter.

By way of example and not limitation, in the embodiments of the present application, the first encoding method may be the following encoding method:

The sending node (or encoding device) can encode N data blocks through an encoder (using, for example, the fountain code encoding method), thereby generating multiple (ie, M, the value of M can be infinite or be Regarded as infinite) coding block/coding unit, or to generate a codeword sequence of infinite length or regarded as infinite length, can be performed by at least N coding blocks/coding units of the above M coding blocks/coding units Decoding can obtain the information of N data blocks.

It should be understood that the encoding methods exemplified above are only examples of the first encoding method in the embodiments of the present application. The first encoding method in the embodiments of the present application is not particularly limited, and the first encoding method in the embodiments of the present application may also be other The fountain code encoding implementation method or other encoding methods only need to have the same function as the first encoding method in the embodiments of the present application.

According to the data transmission method of the embodiment of the present application, for the M code blocks generated corresponding to the first transmission of N data blocks, there is at least one different from the M code blocks generated corresponding to the second transmission of N data blocks. Coding block. That is, in the embodiment of the present application, during one or more retransmissions, at least one different coding block exists in the M coding blocks transmitted in each of the two adjacent transmissions. If the receiving node successfully decodes at least N code blocks, information of N data blocks may be determined.

S220. The sending node sends a first coding block group, where the first coding block group includes the M coding blocks.

For example, the first coding block group may be sent in unicast mode, multicast mode or broadcast mode.

Specifically, in the embodiment of the present application, the transmission of the first coding block group may include the following cases:

Situation 1

The sending node may target one or more receiving nodes and send the first encoding block group to the multiple receiving nodes in a unicast manner.

Situation 2

The sending node may target one or more receiving nodes, and send the first coding block group to the multiple receiving nodes in a broadcast manner. When transmitting the first coding block group in the form of broadcasting, the sending node needs to indicate the scheduling information of the M coding blocks to determine the time-frequency resources mapped by the M coding blocks in the broadcasting first coding block group.

It should be understood that the time-frequency resources mapped by the M coding blocks can be regarded as the time-frequency resources mapped after the M coding blocks are preprocessed.

Situation 3

The sending node may send the first coding block group to multiple receiving nodes in the form of multicast for one or more receiving nodes. When the first coding block group is transmitted in the multicast mode, the sending node needs to indicate the scheduling information of the M coding blocks to determine the time-frequency resources mapped by the M coding blocks in the multicast first coding block group.

As an optional embodiment, the scheduling information includes at least one of the following information: physical resource block PRB, time domain resource, modulation and demodulation strategy MCS, mapping mode, and physical resource block binding size, where The mapping mode includes centralized resource mapping and distributed resource mapping.

Exemplarily, in the embodiment of the present application, the sending node may transmit scheduling information through multicast PDCCH, that is, the physical resource block PRB may be sent between the sending node and the receiving node through DCI carried on the multicast PDCCH , Time-domain resources, modulation and demodulation strategy MCS, mapping mode, and physical resource block binding size, where the mapping mode includes at least one of centralized resource mapping and distributed resource mapping information.

Exemplarily, in the embodiment of the present application, the sending node may transmit the scheduling information through semi-static resource scheduling, and high-level signaling (such as RRC signaling) configures the period of the scheduling information. In a semi-static scheduling system , Resources (including uplink resources or downlink resources) are allocated or designated once by the PDCCH, and then the same physical resources can be reused periodically. The physical resources can be frequency domain resources, code domain resources, air domain resources, and power domain resources. One or more.

Exemplarily, in the embodiment of the present application, the scheduling information of the M coding blocks may also be predefined, that is, the sending node and the receiving node use predefined physical resource blocks PRB, time-domain resources, modulation, and demodulation. The M coding blocks are sent by adjusting the strategy MCS, mapping mode, etc.

As an optional embodiment, the method further includes: the sending node sends first information, where the first information is used to indicate a target device corresponding to at least one of the N data blocks.

Exemplarily, the scheduling information may include at least one of the following information:

Physical resource block PRB, time domain resource, modulation and demodulation strategy MCS, mapping mode, and physical resource block binding size, wherein the mapping mode includes centralized resource mapping and distributed resource mapping.

Next, the information process of the receiving node acquiring the first encoding block group and decoding N data blocks will be described.

The receiving node may receive a first coding block group, the first coding block group including M coding blocks; decoding at least N coding blocks of the M coding blocks; according to the second parameter and the at least N coding blocks Determining information of at least one data block among the N data blocks, wherein the second parameter is used to determine that one of the at least N coding blocks corresponds to the d data blocks of the N data blocks, The second parameter is related to the number of transmissions of the N data blocks, M and N are integers greater than 1 and M is greater than N, d is an integer greater than or equal to 1, and d is less than or equal to N.

Exemplarily, in the embodiment of the present application, the M code blocks received by the receiving node may be code blocks equal to the number of N data blocks (that is, M may be equal to N), or may be coded greater than the number of N data blocks Block (ie M can be greater than N).

In the embodiment of the present application, the receiving node may decode at least N encoding blocks among the M encoding blocks, and determine the information of at least one data block among the N data blocks through the second parameter and the N encoding blocks. The second parameter is related to the number of transmissions of the N data blocks, that is to say, for different transmission times of the N data blocks, the second parameter may be different, that is, at least one of the determined N data blocks Information can also be different. It avoids the influence of the same environmental interference during multiple repeated transmissions, causing the multiple transmissions to fail to obtain the information of the same data block, resulting in the failure of the transmission of N data blocks. The data transmission method of the present application can increase the probability of successful data reception, reduce the number of retransmissions, improve the reliability of data transmission, and reduce the delay of data transmission.

It should be understood that in the embodiment of the present application, the second parameter may be the same parameter as the first parameter. The second parameter may also be a parameter corresponding to the first parameter (for example, one or more parameters generated after processing the first parameter), which is not limited in this application.

For example, the second parameter may include an index value of d data blocks in the N data blocks, an offset value of d data blocks in the N data blocks, or an index value of d data blocks in the N data blocks At least one of the quantity size.

In the embodiment of the present application, the second parameter is different for different transmission times.

It should be noted that the number of d data blocks in the N data blocks may be the value of d or the value corresponding to d (that is, it can be understood as a function output with d as an input or Multiple values). For different transmission times of N data blocks, the value of d may be different.

Exemplarily, the second parameter may be the index value of d data blocks out of N data blocks, or may be a value corresponding to the index value of d data blocks (that is, it can be understood as the index value of d data blocks One or more values of the output of the function as input). For different transmission times of N data blocks or different time slot numbers corresponding to the transmission of N data blocks, there is at least one difference in the determined index values of the d data blocks.

Exemplarily, the second parameter may be an offset value of d data blocks out of N data blocks, or may be a value corresponding to the offset value of d data blocks (that is, it may be understood that The offset value takes one or more values of the output of the input function). For different transmission times of N data blocks or different time slot numbers corresponding to the transmission of N data blocks, the offset value of d data blocks may be different.

Exemplarily, the second parameter may include the index value of d data blocks and the number and size of the d data blocks among the N data blocks. It may also be that the second parameter includes a value corresponding to the index value of the d data blocks and the number and size of the d data blocks (that is, it can be understood that the index value of the d data blocks and the number and size of the d data blocks are used as input One or more values of the function's output). For different transmission times of N data blocks or different time slot numbers corresponding to the transmission of N data blocks, the index value of the d data blocks and the number and size of the d data blocks may be different.

Exemplarily, the second parameter may include an index value of d data blocks and an offset value of d data blocks in N data blocks, or the second parameter may include an index value and d data of d data blocks The value corresponding to the offset value of the block (that can be understood as one or more values of the output of the function that takes the index values of the d data blocks and the offset values of the d data blocks as input). For different transmission times of N data blocks or different time slot numbers corresponding to transmission of N data blocks, the index value of d data blocks and the offset value of d data blocks may be different.

Exemplarily, the second parameter may include the offset value of d data blocks and the number and size of the d data blocks in the N data blocks, or the second parameter may include the offset value and the d data blocks from the d data blocks The value corresponding to the number and size of the data blocks (that is, it can be understood as one or more values of the output of the function taking the offset value of the d data blocks and the number and size of the d data blocks as input). For different transmission times of N data blocks or different time slot numbers corresponding to the transmission of N data blocks, the offset value of the d data blocks and the number and size of the d data blocks are different.

Exemplarily, the second parameter may include the index value of d data blocks in the N data blocks, the offset value of the d data blocks, and the number and size of the d data blocks, or the second parameter may include the N data The index values of d data blocks in the block, the offset values of d data blocks and the values corresponding to the number and size of d data blocks (that is, it can be understood as the index value of d data blocks and the offset of d data blocks The shift value and the number of d data blocks are taken as one or more values of the output of the input function). For different transmission times of N data blocks or different time slot numbers corresponding to the transmission of N data blocks, the index value of d data blocks, the offset value of d data blocks, and the number and size of d data blocks may be different.

In the embodiment of the present application, for different transmission times of N data blocks or different time slot numbers corresponding to transmission of N data blocks, the second parameter may be different.

In a possible implementation manner, different transmission times of N data blocks or different time slot numbers corresponding to N data blocks may be used as an input variable k, then the index value of d data blocks in the N data blocks The value of the output function y(k). For different transmission times of N data blocks or different time slot numbers corresponding to the transmission of N data blocks, the index values of d data blocks may be different.

In a possible implementation manner, different transmission times of N data blocks or different time slot numbers corresponding to transmission of N data blocks may be used as an input variable k, and the offset of d data blocks among N data blocks The value is taken as the value of the output function y(k). For different transmission times of N data blocks or different time slot numbers corresponding to the transmission of N data blocks, the offset value of the d data blocks may be different.

In a possible implementation manner, different transmission times of N data blocks or different time slot numbers corresponding to N data blocks may be used as an input variable k, then the number of d data blocks in the N data blocks The value of the output function y(k). For different transmission times of N data blocks or different time slot numbers corresponding to the transmission of N data blocks, the value of d may be different.

In a possible implementation manner, different transmission times of N data blocks or different time slot numbers corresponding to N data blocks may be used as an input variable k, then the index value of d data blocks in the N data blocks The offset value of the d data blocks is used as the value of the output function y(k). For different transmission times of N data blocks or different time slot numbers corresponding to transmission of N data blocks, the index value of d data blocks and the offset value of d data blocks may be different.

In a possible implementation manner, different transmission times of N data blocks or different time slot numbers corresponding to N data blocks may be used as an input variable k, then the index value of d data blocks in the N data blocks The number and size of the d data blocks are taken as the value of the output function y(k). For different transmission times of N data blocks or different time slot numbers corresponding to the transmission of N data blocks, the index value of the d data blocks and the number and size of the d data blocks may be different.

In a possible implementation manner, different transmission times of N data blocks or different time slot numbers corresponding to transmission of N data blocks may be used as an input variable k, and the offset of d data blocks among N data blocks The value and the number of d data blocks are taken as the value of the output function y(k). For different transmission times of N data blocks or different time slot numbers corresponding to the transmission of N data blocks, the offset value of the d data blocks and the number and size of the d data blocks may be different.

In a possible implementation manner, different transmission times of N data blocks or different time slot numbers corresponding to N data blocks may be used as an input variable k, then the index value of d data blocks in the N data blocks , The offset value of the d data blocks and the number and size of the d data blocks are taken as the value of the output function y(k). For different transmission times of N data blocks or different time slot numbers corresponding to the transmission of N data blocks, the index value of d data blocks, the offset value of d data blocks, and the number and size of d data blocks may be different.

It can be understood that the function y(k) in this application indicates that there is a correspondence between the input parameter k and the output parameter of the function y(k). Further, the corresponding relationship is determined by the function.

By way of example and not limitation, for example, the receiving node may try to decode the M code blocks in the received first code block group.

If the receiving node can correctly decode at least N encoding blocks in the first encoding block group, the receiving node may determine the information of the N data blocks sent by the sending node.

As an optional embodiment, when the receiving node successfully decodes at least N encoding blocks in the first encoding block group, that is, when the receiving node can determine the information of the N data blocks sent by the sending node, the receiving node can send the sending node Send a positive reply.

As an optional embodiment, when the receiving node successfully decodes at least N encoding blocks in the first encoding block group, that is, when the receiving node can determine the information of the N data blocks sent by the sending node, the receiving node may preset Do not send a negative reply or a positive reply for the duration of.

As an optional embodiment, when the receiving node fails to decode at least N encoding blocks in the first encoding block group. For example, if the receiving node fails to decode at least N encoded blocks, that is, the receiving node cannot determine the information of the N data blocks sent by the sending node, the receiving node can send a negative reply to the sending node. The negative reply is used to instruct the receiving node to The decoding failure of at least N encoding blocks in the encoding block group means that the receiving node cannot restore the information of N data blocks through the encoding blocks.

It should be noted that, in the embodiment of the present application, the negative reply sent by the receiving node may be NACK information or a scheduling request SR sent by any receiving node, which is used to indicate that at least N encoding blocks have not been successfully decoded. A negative reply may be a trigger condition that triggers the sending node to retransmit data.

For example, for two transmissions of N data blocks (for example, initial transmission and retransmission), it may be that the receiving node successfully decodes at least N code blocks of the 2M code blocks, thereby acquiring information of N data blocks. That is, for transmission X times, it may be that the receiving node successfully decodes at least N coding blocks out of the X*M coding blocks, so as to obtain information of N data blocks.

Optionally, the method further includes:

Receiving first information, where the first information is used to indicate a target device corresponding to at least one of the N data blocks.

When the receiving node successfully decodes at least N encoded blocks, the receiving node may determine a certain one of the N data blocks that need to be received according to the information included in the first information indicating the target device corresponding to at least one of the N data blocks Or several data blocks.

For example, the N data blocks may include data blocks sent by the sending node to multiple receiving nodes, and the first receiving node determines the data blocks sent by the sending node to the first receiving node based on the information of the N data blocks and the first information Information.

Exemplarily, the first information may be carried in an RRC message. The scheduling information may be carried in the same RRC message as the first information, or may be carried in a different RRC message than the first information; or, the scheduling information may also be in a physical downlink control channel (PDCCH). The scheduling information is used to indicate a first time-frequency resource, and the first time-frequency resource is used to carry the M code blocks.

Exemplarily, the first information may be carried in the PDCCH, the scheduling information may be carried in the same PDCCH as the first information, or may be carried in a PDCCH different from the first information; or, the scheduling information may be carried in the RRC message .

Optionally, the scheduling information may include at least one of the following information: physical resource block PRB, time domain resource, modulation and demodulation strategy MCS, mapping mode, and physical resource block binding size, where the mapping mode Including centralized resource mapping and distributed resource mapping.

It should be understood that the size of the sequence numbers of the above processes does not mean that the execution order is sequential. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

The data transmission method according to an embodiment of the present application has been described in detail above. In this application, a sending node (for example, an encoding device) may generate N encoding blocks by encoding N data blocks using the first encoding method. For two adjacent transmissions, there is at least one different coding block in each of the M coding blocks transmitted, which avoids multiple transmission failures caused by the same environmental interference when repeatedly transmitting the same coding block multiple times, which improves data High reliability of transmission and reduction of data transmission delay. It should be understood that the sending node (for example, encoding device) and the receiving node (for example, decoding device) in the embodiments of the present application may perform the foregoing various methods of the embodiments of the present application, that is, the specific working processes of the following products, reference may be made to the foregoing The corresponding process in the method embodiment.

The device according to an embodiment of the present application will be described in detail below with reference to FIGS. 4 to 8.

FIG. 4 shows a schematic block diagram of an apparatus 400 provided in an embodiment of the present application (the apparatus 400 in FIG. 4 may be the network device in FIG. 1). The device corresponds to the sending node in the above embodiment. Specifically, the device 400 may be a sending node (for example, an encoding device), or may be a chip in the sending node. The device 400 includes a processing unit 410 and a transceiver unit 420.

The processing unit 410 is configured to encode the N data blocks by using the first encoding method to generate M code blocks, where one of the M code blocks is the d of the N data blocks Encoding blocks obtained by encoding data blocks, the first parameter in the first encoding mode is used to determine d data blocks of the N data blocks, and the first parameter and the N data blocks The number of transmissions is related, M and N are integers greater than 1 and M is greater than N, d is an integer greater than or equal to 1, and d is less than or equal to N.

The transceiver unit 420 is configured to send a first coding block group, where the first coding block group includes the M coding blocks.

Optionally, the first parameter includes an index value of d data blocks of the N data blocks, an offset value of d data blocks of the N data blocks, or d of the N data blocks At least one of the number and size of data blocks.

Optionally, the first parameter is related to the number of transmissions of the N data blocks, and includes: for different transmission times, the first parameter is different.

Optionally, for different transmission times, d data blocks of the N data blocks determined according to the first parameter are different.

Optionally, for different transmission times, the index values of the d data blocks in the N data blocks are different; or, for different transmission times, the offset values of the d data blocks in the N data blocks are different. Or, for different transmission times, the number and size of the d data blocks in the N data blocks are different; or, for different transmission times, the index values of the d data blocks in the N data blocks and the The offset values of d data blocks in N data blocks are different; or, for different transmission times, the index values of d data blocks in the N data blocks and the values of d data blocks in the N data blocks The number and size are different; or, for different transmission times, the offset value of the d data blocks in the N data blocks and the number and size of the d data blocks in the N data blocks are different; or, for different transmissions The number of times, the index value of the d data blocks in the N data blocks, the offset value of the d data blocks in the N data blocks, and the number and size of the d data blocks in the N data blocks are different.

Optionally, the transceiver unit 420 is further configured to: receive a negative reply sent from at least one node device;

The transceiver unit 420 is further configured to: send a second coding block group, the second coding block group includes M coding blocks, and the second coding block group is different from the first coding block group by at least one Coding block.

In the embodiment of the present application, it may be that when the sending node receives the negative reply sent by the receiving node, the negative reply may be NACK information or a scheduling request sent by any receiving node, which is used to indicate that at least N encoding blocks have not been successfully decoded. The negative reply may be a triggering condition that triggers the sending node to perform data retransmission. In the embodiment of the present application, the first coded block group for initial transmission and the second coded block group for retransmission are different. The first coded block group and At least one different coding block exists in the second coding block group.

Optionally, the transceiving unit 420 is further configured to: send first information, where the first information is used to indicate a target device corresponding to at least one of the N data blocks.

In a possible implementation manner, the first information may be carried in an RRC message. The scheduling information may be carried in the same RRC message as the first information, or may be carried in a different RRC message than the first information; or, the scheduling information may also be in a physical downlink control channel (PDCCH). The scheduling information is used to indicate a first time-frequency resource, and the first time-frequency resource is used to carry the M code blocks.

In a possible implementation manner, the first information may be carried in the PDCCH, the scheduling information may be carried in the same PDCCH as the first information, or may be carried in a PDCCH different from the first information; or, the scheduling information may be carried In the RRC message.

Optionally, the scheduling information includes at least one of the following information: physical resource block PRB, time domain resource, modulation and demodulation strategy MCS, mapping mode, and physical resource block binding size, where the mapping mode includes Centralized resource mapping and distributed resource mapping.

Optionally, the first coding method is a coding method using a fountain code.

It should be understood that the device 400 here is embodied in the form of a functional unit. The term "unit" here may refer to an application-specific integrated circuit (application specific integrated circuit, ASIC), an electronic circuit, a processor (such as a shared processor, a proprietary processor or a group) for executing one or more software or firmware programs Processor, etc.) and memory, merge logic, and/or other suitable components that support the described functions. In an optional example, those skilled in the art may understand that the apparatus 400 may be specifically a sending node in the foregoing embodiment, and the apparatus 400 may be used to execute various processes and/or steps corresponding to the sending node in the foregoing method embodiments. To avoid repetition, I will not repeat them here.

The apparatus 400 of each of the above solutions has a function of implementing the corresponding steps performed by the sending node in the above method; the function may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions; for example, the transceiver unit may include a sending unit and a receiving unit, where the sending unit may be replaced by a transmitter, the receiving unit may be replaced by a receiver, and other units For example, the processing unit and the like may be replaced by a processor to respectively perform the sending and receiving operations and the related processing operations in each method embodiment.

In the embodiment of the present application, the device in FIG. 4 may also be a chip or a chip system, for example: a system on chip (SoC). Correspondingly, the receiving unit and the sending unit may be the transceiver circuit of the chip, which is not limited herein.

FIG. 5 shows a schematic block diagram of an apparatus 500 provided in an embodiment of the present application (the apparatus 500 in FIG. 5 may be any terminal device in FIG. 1). The device corresponds to the receiving node in the above embodiment. Specifically, the device 500 may be a receiving node (for example, a decoding device), or may be a chip in the receiving node. The device 500 includes a processing unit 510 and a transceiver unit 520.

The transceiver unit 520 is configured to receive a first coding block group, where the first coding block group includes M coding blocks.

The processing unit 510 is configured to decode at least N coding blocks among the M coding blocks.

The processing unit 510 is further configured to determine information of at least one data block among N data blocks according to the second parameter and the at least N coding blocks, wherein the second parameter is used to determine the at least N codes One coding block in the block corresponds to d data blocks in the N data blocks, the second parameter is related to the number of transmissions of the N data blocks, M and N are integers greater than 1 and M is greater than N , D is an integer greater than or equal to 1, and d is less than or equal to N.

In the data transmission method of the embodiment of the present application, the receiving node may decode at least N code blocks among the M code blocks, and determine the information of at least one data block among the N data blocks through the second parameter and the N code blocks. The second parameter is related to the number of transmissions of the N data blocks, that is to say, for different transmission times of the N data blocks, the second parameter may be different, that is, at least one of the determined N data blocks Information can also be different. It avoids the influence of the same environmental interference during multiple repeated transmissions, causing the multiple transmissions to fail to obtain the information of the same data block, resulting in the failure of the transmission of N data blocks. The data transmission method of the present application can increase the probability of successful data reception, reduce the number of retransmissions, improve the reliability of data transmission, and reduce the delay of data transmission.

Optionally, the second parameter includes an index value of d data blocks of the N data blocks, an offset value of d data blocks of the N data blocks, or d of the N data blocks At least one of the number and size of data blocks.

Optionally, the second parameter is related to the number of transmissions of the N data blocks, and includes: for different transmission times, the second parameter is different.

Optionally, for different transmission times, d data blocks of the N data blocks determined according to the second parameter are different.

Optionally, for different transmission times, the offset values of d data blocks in the N data blocks are different; or, for different transmission times, the number and size of the d data blocks in the N data blocks are different. Or, for different transmission times, the index values of the d data blocks in the N data blocks and the offset values of the d data blocks in the N data blocks are different; or, for different transmission times, the The index values of d data blocks in the N data blocks and the number and size of the d data blocks in the N data blocks are different; or, for different transmission times, the d data blocks in the N data blocks The offset value is different from the number of d data blocks in the N data blocks; or, for different transmission times, the index values of the d data blocks in the N data blocks, and the N data blocks The offset value of the d data blocks is different from the number and size of the d data blocks in the N data blocks.

Optionally, the transceiving unit 520 is further configured to: when the at least N encoded blocks are not correctly decoded, send a negative reply; the transceiving unit 520 is further configured to: receive the second set of encoded blocks, The coding block group includes M coding blocks, and at least one different coding block exists in the second coding block group and the first coding block group.

Optionally, the transceiver unit 520 is further configured to: receive first information that is used to indicate a target device corresponding to at least one of the N data blocks; and the processing unit 510 is specifically configured to : Determining the information of the data blocks to be received among the N data blocks according to the information of the N data blocks and the first information.

Optionally, the first coding method is a coding method using a fountain code.

It should be understood that the device 500 here is embodied in the form of a functional unit. The term "unit" here may refer to an application-specific integrated circuit (application specific integrated circuit, ASIC), an electronic circuit, a processor (such as a shared processor, a proprietary processor or a group) for executing one or more software or firmware programs Processor, etc.) and memory, merge logic, and/or other suitable components that support the described functions. In an optional example, those skilled in the art may understand that the apparatus 500 may be specifically a receiving node in the foregoing embodiment, and the apparatus 500 may be used to execute various processes and/or steps corresponding to the sending node in the foregoing method embodiment, To avoid repetition, I will not repeat them here.

The device 500 of each of the above solutions has a function of implementing the corresponding steps performed by the receiving node in the above method; the function may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions; for example, the transceiver unit may include a sending unit and a receiving unit, the sending unit may be replaced by a transmitter, the receiving unit may be replaced by a receiver, and other units, such as The processing unit and the like can be replaced by a processor to respectively perform the sending and receiving operations and the related processing operations in each method embodiment.

In the embodiment of the present application, the device in FIG. 5 may also be a chip or a chip system, for example, a system on chip (SoC). Correspondingly, the receiving unit and the sending unit may be the transceiver circuit of the chip, which is not limited herein.

FIG. 6 shows another device 600 provided by an embodiment of the present application. The device 600 includes a processor 610, a transceiver 620, and a memory 630. Among them, the processor 610, the transceiver 620 and the memory 630 communicate with each other through an internal connection path. The memory 630 is used to store instructions. The processor 610 is used to execute the instructions stored in the memory 630 to control the transceiver 620 to send signals and /Or receive signals.

In a possible design, the processor 610 is used to encode N data blocks in a first encoding mode to generate M encoding blocks, where the first parameter in the first encoding mode is used to Determining d data blocks of the N data blocks, the first parameter is related to the number of transmissions of the N data blocks, and one of the M coding blocks is for the N data blocks The encoding block obtained by encoding d data blocks in M and N is an integer greater than 1 and M is greater than N, d is an integer greater than or equal to 1, and d is less than or equal to N; the transceiver 620 is used to: send A first coding block group, the first coding block group includes the M coding blocks.

It should be understood that the apparatus 600 may be specifically a sending node (for example, an encoding device) in the foregoing embodiments, and may be used to execute various steps and/or processes corresponding to the sending node in the foregoing method embodiments. Optionally, the memory 630 may include a read-only memory and a random access memory, and provide instructions and data to the processor. A portion of the memory may also include non-volatile random access memory. For example, the memory may also store device type information. The processor 610 may be used to execute the instructions stored in the memory, and when the processor 610 executes the instructions stored in the memory, the processor 610 is used to perform the steps of the method embodiment corresponding to the sending node and/or Or process.

In a possible design, the transceiver 620 is used to: receive a first group of coded blocks, the first group of coded blocks includes M coded blocks; the processor 610 is used to: decode the M coded blocks At least N encoding blocks; the processor 610 is further configured to: according to the second parameter and the at least N encoding blocks, determine information of at least one data block among the N data blocks, wherein the second parameter is used to determine One of the at least N coding blocks corresponds to the d data blocks of the N data blocks, the second parameter is related to the number of transmissions of the N data blocks, and M and N are greater than 1. , And M is greater than N, d is an integer greater than or equal to 1, and d is less than or equal to N.

It should be understood that the apparatus 600 may be specifically a receiving node in the foregoing embodiments, and may be used to execute various steps and/or processes corresponding to the receiving node in the foregoing method embodiments. Optionally, the memory 630 may include a read-only memory and a random access memory, and provide instructions and data to the processor. A portion of the memory may also include non-volatile random access memory. For example, the memory may also store device type information. The processor 610 may be used to execute the instructions stored in the memory, and when the processor 610 executes the instructions stored in the memory, the processor 610 is used to perform the steps of the method embodiment corresponding to the receiving node and/or Or process.

It should be understood that, in the embodiments of the present application, the processor of the above device may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSPs), and application-specific integrated circuits (ASIC), field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

In a possible implementation manner, the foregoing memory 630 may be included in the processor 610. Alternatively, it can be understood that the processor 610 itself can execute the function of storing instructions of the memory 630, which is not limited in the embodiment of the present application.

Exemplarily, FIG. 7 is a schematic structural diagram of an apparatus 700 according to an embodiment of the present application. For example, it may be a schematic structural diagram when the sending node is a network device. The network device 700 can be applied to the system shown in FIG. 1 to perform the function of a sending node in the foregoing method embodiment.

As shown, the exemplary network device 700 may include one or more radio frequency units, such as a remote radio unit (RRU) 710 and one or more baseband units (BBU) (also available Called digital unit, digital unit (DU)720. The RRU 710 may be called a communication unit or a transceiver unit, and corresponds to the transceiver unit 420 in FIG. 4. Optionally, the transceiver unit 710 may also be called a transceiver, a transceiver circuit, or a transceiver, etc., which may include at least one antenna 711 and a radio frequency unit 712.

Optionally, the transceiving unit 420 may include a receiving unit and a transmitting unit, the receiving unit may correspond to a receiver (or receiver, receiving circuit), and the transmitting unit may correspond to a transmitter (or transmitter, transmitting circuit). The RRU 710 part is mainly used for the transmission and reception of radio frequency signals and the conversion of radio frequency signals and baseband signals, for example, for sending the first coding block group to the receiving node. The BBU part 720 is mainly used for baseband processing and controlling network equipment. The RRU710 and the BBU 720 may be physically arranged together, or may be physically separated, that is, distributed base stations.

The BBU 720 is the control center of the network equipment, and may also be called a processing unit, which may correspond to the processing unit 410 included in the apparatus 400, and is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, spread spectrum, etc Wait. For example, the BBU (processing unit) may be used to control the base station to perform the operation flow of the network device in the foregoing method embodiment, for example, encoding N data blocks in a first encoding manner to generate M encoding blocks.

In an example, the BBU720 may be composed of one or more boards, and the plurality of boards may jointly support a wireless access network (such as an LTE network) of a single access standard, or may support wireless networks of different access standards respectively Access network (such as LTE network, 5G network or other networks). The BBU 720 also includes a memory 721 and a processor 722. The memory 721 is used to store necessary instructions and data. The processor 722 is used to control the network device to perform necessary actions, for example, to control the network to execute the operation flow of the network device in the foregoing method embodiments. The memory 721 and the processor 722 may serve one or more single boards. In other words, the memory and the processor can be set separately on each board. It is also possible that multiple boards share the same memory and processor. In addition, each board can also be provided with necessary circuits.

It should be understood that the network device 700 shown in FIG. 7 can implement various processes involving the sending node in the method embodiment of FIG. 3. The operations and/or functions of each module in the network device 700 are respectively for implementing the corresponding processes in the above method embodiments. For details, please refer to the description in the above method embodiments. In order to avoid repetition, the detailed description is appropriately omitted here.

The above-mentioned BBU 720 can be used to perform the actions described in the foregoing method embodiment that are internally implemented by the sending node, and the RRU 710 can be used to perform the actions described in the previous method embodiment that the sending node sends or receives from the receiving node. For details, please refer to the description in the foregoing method embodiment, and no more details are provided here.

An embodiment of the present application further provides a processing device, including a processor and an interface; the processor is used to execute the method in any of the foregoing method embodiments.

It should be understood that the above processing device may be a chip. For example, the processing device may be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), or a system on chip (SoC), or It is a central processor (CPU), it can also be a network processor (NP), it can also be a digital signal processing circuit (digital signal processor, DSP), or a microcontroller (micro controller) , MCU), can also be a programmable controller (programmable logic device, PLD) or other integrated chips.

Exemplarily, FIG. 8 is a schematic structural diagram of an apparatus 800 provided by an embodiment of the present application. The apparatus 800 may be a schematic structural diagram when the receiving node is a terminal device, and is applied to the system shown in FIG. 1 to perform the function of the receiving node in the foregoing method embodiment.

As shown, the receiving node 800 includes a processor 810 and a transceiver 820.

Optionally, the receiving node 800 further includes a memory 830. Among them, the processor 810, the transceiver 802 and the memory 830 can communicate with each other through an internal connection path to transfer control and/or data signals. The memory 830 is used to store a computer program, and the processor 810 is used from the memory 830 Call and run the computer program to control the transceiver 820 to send and receive signals.

Optionally, the receiving node 800 may further include an antenna 840 for sending uplink data or uplink control signaling output by the transceiver 820 through a wireless signal.

The processor 810 and the memory 830 may be combined into a processing device. The processor 810 is used to execute the program code stored in the memory 830 to implement the above functions. In specific implementation, the memory 830 may also be integrated in the processor 810 or independent of the processor 810. The processor 810 may correspond to the processing unit 510 of the device 500.

The above transceiver 820 may correspond to the transceiver unit 520 in FIG. 5 and may also be referred to as a communication unit. The transceiver 820 may include a receiver (or receiver, receiving circuit) and a transmitter (or transmitter, transmitting circuit). Among them, the receiver is used to receive signals, and the transmitter is used to transmit signals.

It should be understood that the apparatus 800 shown in FIG. 8 can implement various processes involving the receiving node in the method embodiment shown in FIG. 3. The operations and/or functions of each module in the receiving node 800 are respectively for implementing the corresponding processes in the above method embodiments. For details, please refer to the description in the above method embodiments. In order to avoid repetition, the detailed description is appropriately omitted here.

The foregoing processor 810 may be used to perform the actions described in the foregoing method embodiments that are internally implemented by the receiving node, and the transceiver 820 may be used to perform the operations described in the foregoing method embodiments by the receiving node to send to or receive from the sending node action. For details, please refer to the description in the foregoing method embodiment, and no more details are provided here.

Optionally, the receiving node 800 may further include a power supply 850, which is used to provide power to various devices or circuits in the receiving node.

In addition, in order to make the function of the receiving node more perfect, the receiving node 800 may further include one or more of an input unit 860, a display unit 870, an audio circuit 880, a camera 890, a sensor 801, etc. The audio circuit A speaker 882, a microphone 884, etc. may also be included.

According to the method provided in the embodiments of the present application, the present application also provides a computer program product, the computer program product includes: computer program code, when the computer program code runs on the computer, the computer is caused to execute the embodiment shown in FIG. 3 Methods.

According to the method provided in the embodiments of the present application, the present application also provides a computer-readable medium that stores program code, and when the program code runs on a computer, the computer is caused to execute the embodiment shown in FIG. 3 Methods.

According to the method provided in the embodiment of the present application, the present application further provides a system, which includes one or more sending nodes and one or more receiving nodes described above.

In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on the computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general-purpose computer, a dedicated computer, a computer network, or other programmable devices. The computer instructions may 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 may be from a website site, computer, server or data center Transmission to another website, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device including a server, a data center, and the like integrated with one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (for example, a solid state disc, SSD)) etc.

In each of the above device embodiments, the sending node and the receiving node and the sending node or the receiving node in the method embodiment may completely correspond, and the corresponding steps are performed by the corresponding modules or units, for example, the receiving unit (transceiver) performs the receiving in the method embodiment Or the steps of sending, other steps than sending and receiving can be executed by the processing unit (processor). The function of the specific unit can refer to the corresponding method embodiment. There may be one or more processors.

In this application, "at least one" refers to one or more, and "multiple" refers to two or more. "And/or" describes the relationship of related objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist at the same time, B exists alone, where A, B can be singular or plural. The character "/" generally indicates that the related object is a "or" relationship. "At least one of the following" or a similar expression refers to any combination of these items, including any combination of a single item or a plurality of items. For example, at least one (a) of a, b, or c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, and c may be single or multiple.

The terms "component", "module", "system", etc. used in this specification are used to denote computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component may be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program, and/or a computer. By way of illustration, both the application running on the computing device and the computing device can be components. One or more components can reside in a process and/or thread of execution, and a component can be localized on one computer and/or distributed between two or more computers. In addition, these components can execute from various computer readable media having various data structures stored thereon. The component may, for example, be based on a signal having one or more data packets (eg, data from two components that interact with another component between the local system, the distributed system, and/or the network, such as the Internet that interacts with other systems through signals) Communicate through local and/or remote processes.

Those of ordinary skill in the art may realize that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in hardware or software depends on the specific application of the technical solution and design constraints. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that for the convenience and conciseness of the description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a division of logical functions. In actual implementation, there may be other divisions, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

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, they may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this 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 alone physically, or two or more units may be integrated into one unit.

If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present application essentially or part of the contribution to the existing technology or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to enable a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program codes .

The above is only the specific implementation of this application, but the scope of protection of this application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in this application. It should be covered by the scope of protection of this application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method of data transmission, which includes:

The first encoding mode is used to encode N data blocks to generate M code blocks, wherein one of the M code blocks is obtained by encoding d data blocks of the N data blocks Encoding block, the first parameter in the first encoding mode is used to determine d data blocks of the N data blocks, the first parameter is related to the number of transmissions of the N data blocks, M and N is an integer greater than 1 and M is greater than N, d is an integer greater than or equal to 1, and d is less than or equal to N;

Sending a first coding block group, the first coding block group including the M coding blocks.
The method according to claim 1, wherein the first parameter includes an index value of d data blocks of the N data blocks, an offset value of d data blocks of the N data blocks, or At least one of the number and size of the d data blocks in the N data blocks.
The method according to claim 1 or 2, wherein the first parameter is related to the number of transmissions of the N data blocks, including:

For different transmission times, the first parameter is different.
The method according to claim 3, characterized in that, for different transmission times, the index values of d data blocks in the N data blocks are different; or

For different transmission times, the offset values of d data blocks in the N data blocks are different; or

For different transmission times, the number and size of the d data blocks in the N data blocks are different; or

For different transmission times, the index value of the d data blocks in the N data blocks and the offset value of the d data blocks in the N data blocks are different; or

For different transmission times, the index values of d data blocks in the N data blocks and the number and size of the d data blocks in the N data blocks are different; or

For different transmission times, the offset value of d data blocks in the N data blocks and the number and size of the d data blocks in the N data blocks are different; or

For different transmission times, the index value of d data blocks in the N data blocks, the offset value of d data blocks in the N data blocks, and the number of d data blocks in the N data blocks The size is different.
The method according to any one of claims 1 to 4, wherein the method further comprises:

Receive a negative reply from at least one node device;

Sending a second coding block group, where the second coding block group includes M coding blocks, and at least one different coding block exists in the second coding block group and the first coding block group.
The method according to any one of claims 1 to 5, wherein the first coding method is a coding method using a fountain code.
A method of data transmission, which includes:

Receiving a first coding block group, the first coding block group including M coding blocks;

Decoding at least N coding blocks among the M coding blocks;

Determining information of at least one data block among N data blocks according to a second parameter and the at least N coding blocks, wherein the second parameter is used to determine one of the at least N coding blocks and the Corresponding to d data blocks of N data blocks, the second parameter is related to the number of transmissions of the N data blocks, M and N are integers greater than 1 and M is greater than N, and d is an integer greater than or equal to 1 , And d is less than or equal to N.
The method according to claim 7, wherein the second parameter includes an index value of d data blocks of the N data blocks, an offset value of d data blocks of the N data blocks, or At least one of the number and size of the d data blocks in the N data blocks.
The method according to claim 7 or 8, wherein the second parameter is related to the number of transmissions of the N data blocks, including:

For different transmission times, the second parameter is different.
The method according to claim 9, characterized in that, for different transmission times, the index values of d data blocks in the N data blocks are different; or

For different transmission times, the offset values of d data blocks in the N data blocks are different; or

For different transmission times, the number and size of the d data blocks in the N data blocks are different; or

For different transmission times, the index value of the d data blocks in the N data blocks and the offset value of the d data blocks in the N data blocks are different; or

For different transmission times, the index values of d data blocks in the N data blocks and the number and size of the d data blocks in the N data blocks are different; or

For different transmission times, the offset value of d data blocks in the N data blocks and the number and size of the d data blocks in the N data blocks are different; or

For different transmission times, the index value of d data blocks in the N data blocks, the offset value of d data blocks in the N data blocks, and the number of d data blocks in the N data blocks The size is different.
The method according to any one of claims 7 to 10, wherein the method further comprises:

When the at least N coded blocks are not correctly decoded, a negative reply is sent;

Receiving a second coding block group, where the second coding block group includes M coding blocks, and at least one different coding block exists in the second coding block group and the first coding block group.
The method according to any one of claims 7 to 11, wherein the first coding method is a coding method using a fountain code.
An apparatus is characterized by comprising:

The processing unit is configured to encode the N data blocks in the first encoding mode to generate M code blocks, wherein one of the M code blocks is the d of the N data blocks A coding block obtained by coding a data block, the first parameter in the first coding mode is used to determine d data blocks of the N data blocks, and the transmission of the first parameter and the N data blocks The frequency is related, M and N are integers greater than 1 and M is greater than N, d is an integer greater than or equal to 1, and d is less than or equal to N;

The transceiver unit is configured to send a first coding block group, where the first coding block group includes the M coding blocks.
The apparatus according to claim 13, wherein the first parameter includes an index value of d data blocks of the N data blocks, an offset value of d data blocks of the N data blocks, or At least one of the number and size of the d data blocks in the N data blocks.
The apparatus according to claim 13 or 14, wherein the first parameter is related to the number of transmissions of the N data blocks, and includes:

For different transmission times, the first parameter is different.
The apparatus according to claim 15, characterized in that, for different transmission times, the index values of d data blocks in the N data blocks are different; or

For different transmission times, the offset values of d data blocks in the N data blocks are different; or

For different transmission times, the number and size of the d data blocks in the N data blocks are different; or

For different transmission times, the index value of the d data blocks in the N data blocks and the offset value of the d data blocks in the N data blocks are different; or

For different transmission times, the index values of d data blocks in the N data blocks and the number and size of the d data blocks in the N data blocks are different; or

For different transmission times, the offset value of d data blocks in the N data blocks and the number and size of the d data blocks in the N data blocks are different; or

For different transmission times, the index value of d data blocks in the N data blocks, the offset value of d data blocks in the N data blocks, and the number of d data blocks in the N data blocks The size is different.
The device according to any one of claims 13 to 16, wherein the transceiver unit is further used to:

Receive a negative reply from at least one node device;

The transceiver unit is also used to:

Sending a second coding block group, where the second coding block group includes M coding blocks, and at least one different coding block exists in the second coding block group and the first coding block group.
The device according to any one of claims 13 to 17, wherein the first coding method is a coding method using a fountain code.
An apparatus is characterized by comprising:

A transceiver unit, configured to receive a first coding block group, where the first coding block group includes M coding blocks;

A processing unit, configured to decode at least N coding blocks among the M coding blocks;

The processing unit is further configured to determine the information of at least one data block among the N data blocks according to the second parameter and the at least N coding blocks, wherein the second parameter is used to determine the at least N coding blocks One coding block in corresponds to d data blocks in the N data blocks, the second parameter is related to the number of transmissions of the N data blocks, M and N are integers greater than 1 and M is greater than N, d is an integer greater than or equal to 1, and d is less than or equal to N.
The apparatus according to claim 19, wherein the second parameter includes an index value of d data blocks of the N data blocks, an offset value of d data blocks of the N data blocks, or At least one of the number and size of the d data blocks in the N data blocks.
The apparatus according to claim 19 or 20, wherein the second parameter is related to the number of transmissions of the N data blocks, and includes:

For different transmission times, the second parameter is different.
The device according to claim 21, characterized in that

For different transmission times, the index values of d data blocks in the N data blocks are different; or

For different transmission times, the offset values of d data blocks in the N data blocks are different; or

For different transmission times, the number and size of the d data blocks in the N data blocks are different; or

For different transmission times, the index value of the d data blocks in the N data blocks and the offset value of the d data blocks in the N data blocks are different; or

For different transmission times, the index values of d data blocks in the N data blocks and the number and size of the d data blocks in the N data blocks are different; or

For different transmission times, the offset value of d data blocks in the N data blocks and the number and size of the d data blocks in the N data blocks are different; or

For different transmission times, the index value of d data blocks in the N data blocks, the offset value of d data blocks in the N data blocks, and the number of d data blocks in the N data blocks The size is different.
The device according to any one of claims 19 to 22, wherein the transceiver unit is further used to:

When the at least N coded blocks are not correctly decoded, a negative reply is sent;

The transceiver unit is also used to:

Receiving a second coding block group, where the second coding block group includes M coding blocks, and at least one different coding block exists in the second coding block group and the first coding block group.
The device according to any one of claims 19 to 23, wherein the first coding method is a coding method using a fountain code.
An apparatus is characterized by comprising: a processor, the processor is coupled with a memory, the memory is used to store a program or instruction, and when the program or instruction is executed by the processor, the apparatus is executed The method according to any one of claims 1-6 or claims 7-12.
A computer program product comprising computer program code, characterized in that, when the computer program code runs on a computer, it causes the computer to implement any of the above claims 1-6 or claims 7-12 One of the methods.
A chip, characterized by comprising: a processor for reading instructions stored in a memory, and when the processor executes the instructions, the chip realizes the above claims 1-6 or claim 7- The method according to any one of 12.
A communication device, characterized in that the device is used to execute the method according to any one of claims 1-6 or claims 7-12.
A computer-readable medium on which computer programs or instructions are stored, characterized in that, when the computer programs or instructions are executed, the computer is executed as described in any one of claims 1-6 or claims 7-12 Methods.
A communication system, comprising: means for performing the method according to any one of claims 1-6 and/or claims 7-12.