WO2020143786A1

WO2020143786A1 - Data transmission method and device

Info

Publication number: WO2020143786A1
Application number: PCT/CN2020/071491
Authority: WO
Inventors: 纪刘榴; 葛士斌; 杭海存; 王潇涵; 毕晓艳
Original assignee: 华为技术有限公司
Priority date: 2019-01-10
Filing date: 2020-01-10
Publication date: 2020-07-16

Abstract

Provided are a data transmission method and device, wherein same relate to the technical field of communications. The method comprises: a sending end generating first data corresponding to each of N time units, and sending, to a receiving end and on each of the N time units, the first data. Where N is equal to 1, the N time units correspond to at least two pieces of first data generated by the same piece of second data, and the at least two pieces of first data correspond to at least two different RVs. Alternatively, where N is greater than 1, all pieces of first data corresponding to the N time units are generated by the same piece of second data, and at least one of the N time units corresponds to at least two pieces of first data. Alternatively, where N is greater than 1, all pieces of first data corresponding to the N time units are generated by at least two different pieces of second data, and the same piece of second data generates at least two pieces of first data on different time units. By means of the method, data transmission efficiency can be improved.

Description

Data transmission method and device

This application requires submission to the State Intellectual Property Office on January 10, 2019, the application number is 201910024364.6, the application name is "data transmission method and device", and November 28, 2019 to the State Intellectual Property Office, the application number is 201911194461.6, The priority of the Chinese patent application with the application name "Data transmission method and device", the entire content of which is incorporated by reference in this application.

Technical field

This application relates to the field of communication technology, and in particular, to a data transmission method and device.

Background technique

With the development of communication technology, in some scenarios of the 5th-generation (5G) communication system, higher requirements are placed on the reliability of data transmission. For example, ultra-reliable and low latency communication (URLLC) business scenarios. In a 5G communication system, the sending end can repeatedly transmit the same data in the time domain, thereby utilizing the time domain diversity gain brought by the change of the channel in the time domain to improve the reliability of data transmission. For example, a terminal may transmit different redundancy versions (abbreviated as RV) of the same transport block (TB) in multiple time units, where one RV of the TB is transmitted on one time unit, and the TB Through a transmission layer transmission, the base station merges and decodes the data received in the multiple time units, thereby improving the success rate of data reception and increasing the reliability of data propagation.

Summary of the invention

The embodiments of the present application provide a data transmission method and device, which are used to improve the data transmission efficiency under the premise of ensuring the reliability of data transmission, and thereby make the communication system meet the requirements of high reliability and high delay.

To achieve the above purpose, the embodiments of the present application provide the following technical solutions:

In a first aspect, a data transmission method is provided, which includes: a sending end generates first data corresponding to each time unit in N time units, and sends the first data to each receiving unit in N time units Corresponding first data, each first data is generated from the second data corresponding to the first data, and N is a positive integer.

Where N is equal to 1, N time units correspond to at least two first data, at least two first data correspond to the same second data, and at least two first data correspond to at least two different RVs; or , When N is greater than 1, all first data corresponding to N time units correspond to the same second data, and at least one time unit among N time units corresponds to at least two first data; or, when N is greater than 1 In the case of, all first data corresponding to N time units correspond to at least two different second data, and the same second data corresponds to at least two first data on different time units.

According to the method provided in the first aspect, the transmitting end transmits the plurality of first data generated from the same second data on at least one time unit of the plurality of time units, or performs the plurality of second data on the plurality of time units Repeated transmission (that is, multiple transmissions of multiple data in multiple time units, for example, multiple TBs), and multiple different RVs that transmit the same TB in multiple time units (that is, multiple data units in multiple time units) Data, that is, repeated transmission of the same TB), while ensuring the reliability of data transmission, it can reduce data transmission delay and improve data transmission efficiency.

With reference to the first aspect, in a possible implementation manner, the first data is a data stream or a codeword.

With reference to the first aspect, in a possible implementation manner, N is greater than 1, and for any time unit corresponding to at least two first data generated from the same second data among N time units, the time unit corresponds to At least two first data generated from the same second data correspond to multiple different RVs. This possible implementation manner may enable a device that receives a plurality of first data generated from the same second data to obtain SINR gain and improve data transmission efficiency.

With reference to the first aspect, in a possible implementation manner, when any one of the N time units corresponds to at least two first data generated from the same second data, the time unit corresponds to Any two of the at least two first data generated from the same second data have different RVs. This possible implementation manner can enable a device that receives multiple first data generated from the same second data to obtain a greater SNR gain and improve data transmission efficiency.

With reference to the first aspect, in a possible implementation manner, the sending end is a terminal, the method further includes: the sending end receives first indication information from the receiving end, and the first indication information is used by the sending end to determine in N time units The index of the RV corresponding to the first data sent on each time unit of the; the sending end sends the corresponding first data to the receiving end on each of the N time units, including: the sending end is based on the first indication The information sends the corresponding first data to the receiving end on each of the N time units. This possible implementation manner may enable the sending end to determine the RV corresponding to the sent first data, and send the first data according to the RV corresponding to the first data.

With reference to the first aspect, in a possible implementation manner, the sending end is a network device, the method further includes: the sending end sends first indication information to the receiving end, and the first indication information is used by the receiving end to determine in N time units The index of the RV corresponding to the first data received on each time unit in. This possible implementation manner may enable the receiving end to determine the RV corresponding to the first data sent by the sending end, so that the receiving end performs combined decoding of the first data.

With reference to the first aspect, in a possible implementation manner, the first indication information is used to indicate the index of any one of the S RVs. The indexes of the S RVs meet the preset order, and the S RVs are the RV corresponding to all the first data sent on N time units, S is an integer greater than N. In this possible implementation manner, the terminal may learn the index of the RV corresponding to the S first data according to the first indication information and the preset cyclic order satisfied by the indexes of the S RVs, and the network device may not indicate the index of each RV, Thereby saving transmission resources.

With reference to the first aspect, in a possible implementation manner, the first indication information is used to indicate an RV index, and the RV index corresponds to an RV sequence, and the RV sequence includes an indicator that indicates each of the N time units. Information about the index of the RV corresponding to the first data sent on each time unit. In this possible implementation manner, the terminal may learn the index of the RV corresponding to each first data according to the first indication information and the correspondence between the RV index and the RV sequence, and the network device may not indicate the index of each RV, thereby Save transmission resources.

With reference to the first aspect, in a possible implementation manner, N=1, the N time units correspond to two first data, and the first indication information is used to indicate two corresponding to the N time units The index of the RV corresponding to the first data; wherein the indexes of the RV corresponding to the two first data corresponding to the N time units are 0 and 2, respectively, or the two first data corresponding to the N time units The indexes of the corresponding RVs are 2 and 3, respectively, or the indexes of the RVs corresponding to the two first data corresponding to the N time units are 3 and 1, respectively, or the two corresponding The indexes of RV corresponding to a piece of data are 1 and 0, respectively.

With reference to the first aspect, in a possible implementation manner, the method further includes: the sending end sends second indication information to the receiving end, where the second indication information is used to indicate that the corresponding one received in the same time unit corresponds to the same first Multiple first data of the two data are combined and decoded.

With reference to the first aspect, in a possible implementation, the sending end is a network device, and the second indication information is indicated by a downlink aggregation factor field. When the value of the downlink aggregation factor field is 1, the downlink aggregation factor field is used to indicate Multiple first data corresponding to the same second data received in the same time unit are combined and decoded.

With reference to the first aspect, in a possible implementation manner, the sending end is a terminal, the second indication information is indicated by an uplink shared channel indication field and a CSI request field, when the value of the uplink shared channel indication field is 0, and the CSI request field When the value is 1, the uplink shared channel indication field and the CSI request field are used to instruct to merge and decode multiple first data corresponding to the same second data received in the same time unit.

With reference to the first aspect, in a possible implementation, the second indication information is indicated by the index of the MCS and the index of the RV corresponding to the first data sent on a time unit. When the index of the MSC is 25, and the RV When the index is 1, the index of the MCS and the index of the RV are used to instruct to merge and decode multiple first data corresponding to the same second data received in the same time unit.

With reference to the first aspect, in a possible implementation manner, in a case where N is greater than 1, the method further includes: the sending end sends third indication information to the receiving end, and the third indication information is used to indicate the M'time All the first data corresponding to the same second data received in the unit are combined and decoded, and M′ is an integer greater than 1.

With reference to the first aspect, in a possible implementation, the sending end is a network device, and the third indication information is indicated by a downlink aggregation factor field. When the value of the downlink aggregation factor field is M', the downlink aggregation factor field is used to indicate Combine and decode all first data corresponding to the same second data received in M′ time units.

In a second aspect, a data transmission method is provided, which includes: a receiving end receives corresponding first data from a sending end on each of N time units, and performs combined decoding of target first data, each The first data is generated from the second data corresponding to the first data, and N is a positive integer; the target first data is the first data generated from the same second data received on the same time unit in N time units One data; or, the target first data is the first data generated from the same second data received on M time units, M time units belong to N time units, and M is an integer greater than 1 but less than or equal to N .

According to the method provided in the second aspect, the transmitting end transmits the plurality of first data generated from the same second data on at least one time unit of the plurality of time units, or performs the plurality of second data on the plurality of time units Repeated transmission (that is, multiple transmissions of multiple data in multiple time units, for example, multiple TBs), and multiple different RVs that transmit the same TB in multiple time units (that is, multiple data units in multiple time units) Data, that is, repeated transmission of the same TB), while ensuring the reliability of data transmission, it can reduce data transmission delay and improve data transmission efficiency.

With reference to the second aspect, in a possible implementation manner, the first data is a data stream or a codeword.

With reference to the second aspect, in a possible implementation manner, N is greater than 1, and for any time unit corresponding to at least two first data generated from the same second data among N time units, the time unit corresponds to At least two first data generated from the same second data correspond to multiple different RVs. This possible implementation manner may enable a device that receives a plurality of first data generated from the same second data to obtain SINR gain and improve data transmission efficiency.

With reference to the second aspect, in a possible implementation manner, when any one of the N time units corresponds to at least two first data generated from the same second data, the time unit corresponds to Any two of the at least two first data generated from the same second data have different RVs. This possible implementation manner can enable a device that receives multiple first data generated from the same second data to obtain a greater SNR gain and improve data transmission efficiency.

With reference to the second aspect, in a possible implementation manner, the receiving end is a network device, the method further includes: the receiving end sends first indication information to the sending end, and the first indication information is used by the sending end to determine at N time units The index of the RV corresponding to the first data sent on each time unit in. This possible implementation manner may enable the sending end to determine the RV corresponding to the sent first data, and send the first data according to the RV corresponding to the first data.

With reference to the second aspect, in a possible implementation manner, the receiving end is a terminal, the method further includes: the receiving end receives first indication information from the sending end, and the first indication information is used by the receiving end to determine in N time units The index of the RV corresponding to the first data received on each time unit of the receiver; combining and decoding the first target data by the receiving end includes: combining and decoding the first target data according to the first indication information. This possible implementation manner may enable the receiving end to determine the RV corresponding to the first data sent by the sending end, so that the receiving end performs combined decoding of the first data.

With reference to the second aspect, in a possible implementation manner, the first indication information is used to indicate the index of any one of the S RVs. The index of the S RVs meets the preset order, and the S RVs are the RV corresponding to all the first data sent on N time units, S is an integer greater than N. In this possible implementation manner, the terminal may learn the index of the RV corresponding to the S first data according to the first indication information and the preset cyclic order satisfied by the indexes of the S RVs, and the network device may not indicate the index of each RV, Thereby saving transmission resources.

With reference to the second aspect, in a possible implementation manner, the first indication information is used to indicate an RV index, and the RV index corresponds to an RV sequence, and the RV sequence includes an indicator that indicates each of the N time units. Information about the index of the RV corresponding to the first data sent on each time unit. In this possible implementation manner, the terminal may learn the index of the RV corresponding to each first data according to the first indication information and the correspondence between the RV index and the RV sequence, and the network device may not indicate the index of each RV, thereby Save transmission resources.

With reference to the second aspect, in a possible implementation manner, N=1, the N time units correspond to two first data, and the first indication information is used to indicate two corresponding to the N time units The index of the RV corresponding to the first data; wherein the indexes of the RV corresponding to the two first data corresponding to the N time units are 0 and 2, respectively, or the two first data corresponding to the N time units The indexes of the corresponding RVs are 2 and 3, respectively, or the indexes of the RVs corresponding to the two first data corresponding to the N time units are 3 and 1, respectively, or the two corresponding The indexes of RV corresponding to a piece of data are 1 and 0, respectively.

With reference to the second aspect, in a possible implementation manner, the method further includes: the receiving end receives second indication information from the sending end, and the second indication information is used to indicate that the corresponding corresponding first The multiple first data of the two data are combined and decoded; the combined decoding of the target first data by the receiving end includes: the receiving end performs combined decoding of the target first data according to the second instruction information, the target first data is The first data generated from the same second data received on the same time unit among the N time units.

With reference to the second aspect, in a possible implementation, the receiving end is a terminal, and the second indication information is indicated by a downlink aggregation factor field. When the value of the downlink aggregation factor field is 1, the downlink aggregation factor field is used to indicate the same Multiple first data corresponding to the same second data received in one time unit are combined and decoded.

With reference to the second aspect, in a possible implementation manner, the receiving end is a network device, the second indication information is indicated by an uplink shared channel indication field and a CSI request field, when the value of the uplink shared channel indication field is 0, and the CSI request When the value of the field is 1, the uplink shared channel indication field and the CSI request field are used to instruct to merge and decode multiple first data corresponding to the same second data received in the same time unit.

With reference to the second aspect, in a possible implementation, the second indication information is indicated by the index of the MCS and the index of the RV corresponding to the first data sent on a time unit. When the index of the MSC is 25 and the RV When the index is 1, the index of the MCS and the index of the RV are used to instruct to merge and decode multiple first data corresponding to the same second data received in the same time unit.

With reference to the second aspect, in a possible implementation manner, in a case where N is greater than 1, the method further includes: the receiving end receives third indication information from the sending end, and the third indication information is used to indicate the M'time All the first data corresponding to the same second data received in the unit are combined and decoded, M′ is an integer greater than or equal to M; the receiving end performs the combined decoding of the target first data, including: the receiving end according to the third instruction The information merges and decodes the target first data. The target first data is all the first data generated from the same second data received on M time units.

With reference to the second aspect, in a possible implementation, the receiving end is a terminal, and the third indication information is indicated by a downlink aggregation factor field. When the value of the downlink aggregation factor field is M', the downlink aggregation factor field is used to indicate All the first data corresponding to the same second data received in M′ time units are combined and decoded.

In a third aspect, a data transmission device is provided, including: a processing unit and a communication unit; the processing unit is configured to generate first data corresponding to each time unit of N time units, each of the first The data is generated from the second data corresponding to the first data, and N is a positive integer; where N is equal to 1, the N time units correspond to at least two first data, and the at least two first data Corresponding to the same second data, the at least two first data correspond to at least two different RVs; or, in the case where N is greater than 1, all the first data corresponding to the N time units correspond to the same second Data, at least one of the N time units corresponds to at least two first data; or, in the case where N is greater than 1, all the first data corresponding to the N time units correspond to at least two different The second data, and the same second data corresponds to the first data on at least two different time units; the communication unit is configured to send the corresponding data to the receiving end on each of the N time units The first data.

With reference to the third aspect, in a possible implementation manner, the first data is a data stream or a codeword.

With reference to the third aspect, in a possible implementation manner, N is greater than 1, and for any time unit corresponding to at least two first data generated from the same second data among the N time units, the time unit Corresponding at least two first data generated from the same second data correspond to multiple different RVs.

With reference to the third aspect, in a possible implementation manner, the data transmission device is a terminal; the communication unit is further configured to receive first indication information from the receiving end, and the first indication information is used for all The data transmission device determines the index of the RV corresponding to the first data sent on each of the N time units; the processing unit is further configured to use the communication based on the first indication information The unit sends corresponding first data to the receiving end on each of the N time units.

With reference to the third aspect, in a possible implementation manner, the data transmission device is a network device; the communication unit is further configured to send first indication information to the receiving end, and the first indication information is used to The receiving end determines the index of the RV corresponding to the first data received on each of the N time units.

With reference to the third aspect, in a possible implementation manner, the first indication information is used to indicate an index of any one of S RVs, and the indexes of the S RVs satisfy a preset order, and the S RVs are RVs corresponding to all the first data sent by the data transmission device on the N time units, and S is an integer greater than N.

With reference to the third aspect, in a possible implementation manner, the first indication information is used to indicate an RV index, and the RV index corresponds to an RV sequence, and the RV sequence includes N time units for indicating The index information of the RV corresponding to the first data sent on each time unit.

With reference to the third aspect, in a possible implementation manner, N=1, the N time units correspond to two first data, and the first indication information is used to indicate two corresponding to the N time units The index of the RV corresponding to the first data; wherein the indexes of the RV corresponding to the two first data corresponding to the N time units are 0 and 2, respectively, or the two first data corresponding to the N time units The indexes of the corresponding RVs are 2 and 3, respectively, or the indexes of the RVs corresponding to the two first data corresponding to the N time units are 3 and 1, respectively, or the two corresponding The indexes of RV corresponding to a piece of data are 1 and 0, respectively.

With reference to the third aspect, in a possible implementation manner, the communication unit is further configured to send second indication information to the receiving end, where the second indication information is used to indicate that it is received within the same time unit Multiple first data corresponding to the same second data are combined and decoded.

With reference to the third aspect, in a possible implementation manner, the data transmission device is a network device, and the second indication information is indicated by a downlink aggregation factor field. When the value of the downlink aggregation factor field is 1, the The downlink aggregation factor field is used to instruct to merge and decode multiple first data corresponding to the same second data received in the same time unit.

With reference to the third aspect, in a possible implementation manner, the data transmission device is a terminal, and the second indication information is indicated by an uplink shared channel indication field and a CSI request field, when the value of the uplink shared channel indication field Is 0, and the value of the CSI request field is 1, the uplink shared channel indication field and the CSI request field are used to indicate a plurality of first data corresponding to the same second data received in the same time unit One data is merged and decoded.

With reference to the third aspect, in a possible implementation manner, the second indication information is indicated by the index of the MCS and the index of the RV corresponding to the first data sent on a time unit, when the index of the MSC is 25 And when the index of the RV is 1, the index of the MCS and the index of the RV are used to instruct to merge and decode multiple first data corresponding to the same second data received in the same time unit .

With reference to the third aspect, in a possible implementation manner, when N is greater than 1, the communication unit is further configured to send third indication information to the receiving end, where the third indication information is used to indicate All the first data corresponding to the same second data received in M'time units are combined and decoded, and M'is an integer greater than 1.

With reference to the third aspect, in a possible implementation manner, the data transmission apparatus is a network device, the third indication information is indicated by a downlink aggregation factor field, and when the value of the downlink aggregation factor field is M′, The downlink aggregation factor field is used to indicate that all first data corresponding to the same second data received in M′ time units are combined and decoded.

According to a fourth aspect, there is provided a data transmission device, including: a processing unit and a communication unit; the communication unit is configured to receive the corresponding first data from the sending end on each of the N time units, each The first data is generated from the second data corresponding to the first data, and N is a positive integer; where N is equal to 1, the N time units correspond to at least two first data, the at least Two first data correspond to the same second data, the at least two first data correspond to at least two different RVs; or, in the case where N is greater than 1, all the first data corresponding to the N time units Corresponding to the same second data, at least one of the N time units corresponds to at least two first data; or, in the case where N is greater than 1, all the first data corresponding to the N time units correspond to At least two different second data, and the same second data corresponds to the first data on at least two different time units; the processing unit is used to merge and decode the target first data; the target first The data is the first data generated from the same second data received on the same time unit in the N time units; or, the target first data is the data received on the M time units. In the first data generated by the same second data, the M time units belong to the N time units, and M is an integer greater than 1 and less than or equal to N.

With reference to the fourth aspect, in a possible implementation manner, the first data is a data stream or a codeword.

With reference to the fourth aspect, in a possible implementation manner, N is greater than 1, for any time unit corresponding to at least two first data generated from the same second data among the N time units, the time unit Corresponding at least two first data generated from the same second data correspond to multiple different RVs.

With reference to the fourth aspect, in a possible implementation manner, the data transmission device is a network device; and the communication unit is further configured to send first indication information to the sending end, and the first indication information is used to The sending end determines the index of the RV corresponding to the first data sent on each of the N time units.

With reference to the fourth aspect, in a possible implementation manner, the data transmission device is a terminal; the communication unit is further configured to receive first indication information from the sending end, and the first indication information is used for all The data transmission device determines the index of the RV corresponding to the first data received on each of the N time units; the processing unit is specifically configured to target the first target according to the first indication information The data is combined and decoded.

With reference to the fourth aspect, in a possible implementation manner, the first indication information is used to indicate an index of any one of S RVs, and the indexes of the S RVs satisfy a preset order, and the S RVs are RVs corresponding to all the first data sent by the sending end on the N time units, and S is an integer greater than N.

With reference to the fourth aspect, in a possible implementation manner, the first indication information is used to indicate an RV index, and the RV index corresponds to an RV sequence, and the RV sequence includes N time units for indicating The index information of the RV corresponding to the first data sent on each time unit.

With reference to the fourth aspect, in a possible implementation manner, N=1, the N time units correspond to two first data, and the first indication information is used to indicate two corresponding to the N time units The index of the RV corresponding to the first data; wherein the indexes of the RV corresponding to the two first data corresponding to the N time units are 0 and 2, respectively, or the two first data corresponding to the N time units The indexes of the corresponding RVs are 2 and 3, respectively, or the indexes of the RVs corresponding to the two first data corresponding to the N time units are 3 and 1, respectively, or the two corresponding The indexes of RV corresponding to a piece of data are 1 and 0, respectively.

With reference to the fourth aspect, in a possible implementation manner, the communication unit is further configured to receive second indication information from the sending end, and the second indication information is used to indicate that it is received within the same time unit Multiple first data corresponding to the same second data are merged and decoded; the processing unit is specifically configured to merge and decode the target first data according to the second indication information, the target first The data is the first data generated from the same second data received on the same time unit among the N time units.

With reference to the fourth aspect, in a possible implementation manner, the data transmission device is a terminal, the second indication information is indicated by a downlink aggregation factor field, and when the value of the downlink aggregation factor field is 1, the The downlink aggregation factor field is used to instruct to merge and decode multiple first data corresponding to the same second data received in the same time unit.

With reference to the fourth aspect, in a possible implementation manner, the data transmission device is a network device, and the second indication information is indicated by an uplink shared channel indication field and a CSI request field. When the uplink shared channel indication field is When the value is 0, and the value of the CSI request field is 1, the uplink shared channel indication field and the CSI request field are used to indicate a plurality of corresponding second data received in the same time unit The first data is merged and decoded.

With reference to the fourth aspect, in a possible implementation manner, the second indication information is indicated by an index of the MCS and an index of the RV corresponding to a first data sent on a time unit, when the index of the MSC is 25 And when the index of the RV is 1, the index of the MCS and the index of the RV are used to instruct to merge and decode multiple first data corresponding to the same second data received in the same time unit .

With reference to the fourth aspect, in a possible implementation manner, when N is greater than 1, the communication unit is further configured to receive third indication information from the sending end, and the third indication information is used to indicate Merge and decode all the first data corresponding to the same second data received in M′ time units, M′ is an integer greater than or equal to M; the processing unit is specifically used for according to the third instruction information Combine and decode the target first data, the target first data is all the first data generated from the same second data received on M time units.

With reference to the fourth aspect, in a possible implementation manner, the data transmission device is a terminal, and the third indication information is indicated by a downlink aggregation factor field. When the value of the downlink aggregation factor field is M′, the The downlink aggregation factor field is used to indicate that all first data corresponding to the same second data received in M′ time units are combined and decoded.

According to a fifth aspect, a data transmission method is provided, including: a network device sends first indication information to a terminal, where the first indication information is used by the terminal to determine each time of the network device in N time units The index of the RV corresponding to the first data sent on the unit, each of the first data is generated from the second data corresponding to the first data, and N is a positive integer; the network device is based on the first indication information The corresponding first data is sent on each time unit of the N time units.

Where N is equal to 1, the N time units correspond to at least two first data, the at least two first data correspond to the same second data, and the at least two first data correspond to at least two Different RVs; or, in the case where N is greater than 1, all the first data corresponding to the N time units correspond to the same second data, and at least one of the N time units corresponds to at least two First data; or, in the case where N is greater than 1, all first data corresponding to the N time units correspond to at least two different second data, and the same second data corresponds to at least two different time units First data.

With reference to the fifth aspect, in a possible implementation manner, the first indication information is used to indicate an index of any one of S RVs, and the indexes of the S RVs satisfy a preset order, and the S RVs are RVs corresponding to all the first data sent by the network device on the N time units, and S is an integer greater than N.

With reference to the fifth aspect, in a possible implementation manner, the first indication information is used to indicate an index of an RV, and the index of the RV corresponds to an RV sequence, and the RV sequence includes an indication of N time units. The index information of the RV corresponding to the first data sent on each time unit.

With reference to the fifth aspect, in a possible implementation manner, N=1, the N time units correspond to two first data, and the first indication information is used to indicate two corresponding to the N time units The index of the RV corresponding to the first data; wherein the indexes of the RV corresponding to the two first data corresponding to the N time units are 0 and 2, respectively, or the two first data corresponding to the N time units The indexes of the corresponding RVs are 2 and 3, respectively, or the indexes of the RVs corresponding to the two first data corresponding to the N time units are 3 and 1, respectively, or the two corresponding The indexes of RV corresponding to a piece of data are 1 and 0, respectively.

With reference to the fifth aspect, in a possible implementation manner, the method further includes: the network device sends second indication information to the terminal, where the second indication information is used to indicate reception within the same time unit The obtained multiple first data corresponding to the same second data are combined and decoded.

With reference to the fifth aspect, in a possible implementation manner, in a case where N is greater than 1, the method further includes: the network device sends third indication information to the terminal, and the third indication information is used to Instruct to merge and decode all first data corresponding to the same second data received in M′ time units, M′ is an integer greater than 1.

According to a sixth aspect, a data transmission method is provided, including: a terminal receiving first indication information from a network device, where the first indication information is used by the terminal to determine each of the network devices in the N time units The index of the RV corresponding to the first data sent on each time unit, each of the first data is generated from the second data corresponding to the first data, and N is a positive integer; where, when N is equal to 1, The N time units correspond to at least two first data, the at least two first data correspond to the same second data, and the at least two first data correspond to at least two different RVs; or, if N is greater than In the case of 1, all the first data corresponding to the N time units correspond to the same second data, and at least one of the N time units corresponds to at least two first data; or, when N is greater than 1 In the case of, all the first data corresponding to the N time units correspond to at least two different second data, and the same second data correspond to the first data on at least two different time units; The first instruction information merges and decodes the target first data; the target first data is the first data generated from the same second data received on the same time unit of the N time units Or, the target first data is the first data generated from the same second data received on M time units, the M time units belong to the N time units, and M is greater than 1 and less than An integer equal to N.

With reference to the sixth aspect, in a possible implementation manner, the first indication information is used to indicate an index of any one of S RVs, and the indexes of the S RVs satisfy a preset order, and the S RVs are RVs corresponding to all the first data sent by the network device on the N time units, and S is an integer greater than N.

With reference to the sixth aspect, in a possible implementation manner, the first indication information is used to indicate an RV index, and the RV index corresponds to an RV sequence, and the RV sequence includes an indication for N time units. The index information of the RV corresponding to the first data sent on each time unit.

With reference to the sixth aspect, in a possible implementation manner, N=1, the N time units correspond to two first data, and the first indication information is used to indicate two corresponding to the N time units The index of the RV corresponding to the first data; wherein the indexes of the RV corresponding to the two first data corresponding to the N time units are 0 and 2, respectively, or the two first data corresponding to the N time units The indexes of the corresponding RVs are 2 and 3, respectively, or the indexes of the RVs corresponding to the two first data corresponding to the N time units are 3 and 1, respectively, or the two corresponding The indexes of RV corresponding to a piece of data are 1 and 0, respectively.

With reference to the sixth aspect, in a possible implementation manner, the method further includes: the terminal receives second indication information from the network device, where the second indication information is used to instruct to receive within the same time unit Merged and decoded multiple first data corresponding to the same second data; combining and decoding the target first data according to the first indication information by the terminal includes: the terminal according to the first indication Information and the second instruction information to merge and decode the first target data, the first target data is the same second data received on the same time unit of the N time units The first data generated.

With reference to the sixth aspect, in a possible implementation manner, in a case where N is greater than 1, the method further includes: the terminal receives third indication information from the network device, and the third indication information is used to Instructing to merge and decode all first data corresponding to the same second data received in M′ time units, M′ is an integer greater than or equal to M; the terminal performs a first target on the target according to the first instruction information Combined decoding of data includes: the terminal performs combined decoding of the target first data according to the first indication information and the third indication information, the target first data is received on M time units All the first data generated from the same second data.

With reference to the method provided in the fifth aspect or the sixth aspect, in a possible implementation manner, the second indication information is indicated by a downlink aggregation factor field, and when the value of the downlink aggregation factor field is 1, the downlink The aggregation factor field is used to instruct to merge and decode multiple first data corresponding to the same second data received in the same time unit.

With reference to the method provided in the fifth aspect or the sixth aspect, in a possible implementation manner, the second indication information is indicated by an index of the MCS and an index of the RV corresponding to a piece of first data sent on a time unit, when When the index of the MSC is 25 and the index of the RV is 1, the index of the MCS and the index of the RV are used to indicate a plurality of corresponding second data received in the same time unit The first data is merged and decoded.

With reference to the method provided in the fifth aspect or the sixth aspect, in a possible implementation manner, the third indication information is indicated by a downlink aggregation factor field, and when the value of the downlink aggregation factor field is M', the The downlink aggregation factor field is used to instruct to merge and decode all first data corresponding to the same second data received in M′ time units.

According to a seventh aspect, a data transmission method is provided, including: a network device sends first indication information to a terminal, where the first indication information is used by the terminal to determine each of the N time units of the terminal The index of the RV corresponding to the first data sent on the Internet, each of the first data is generated from the second data corresponding to the first data, and N is a positive integer; where, when N is equal to 1, the N Time units correspond to at least two first data, the at least two first data correspond to the same second data, the at least two first data correspond to at least two different RVs; or, when N is greater than 1, Next, all the first data corresponding to the N time units correspond to the same second data, and at least one time unit among the N time units corresponds to at least two first data; or, if N is greater than 1, , All the first data corresponding to the N time units correspond to at least two different second data, and the same second data correspond to the first data on at least two different time units; the network device is based on the first An instruction message to merge and decode the target first data; the target first data is the first data generated from the same second data received on the same time unit of the N time units; or , The target first data is the first data generated from the same second data received on M time units, the M time units belong to the N time units, and M is greater than 1 but less than or equal to N Integer.

With reference to the seventh aspect, in a possible implementation manner, the first indication information is used to indicate an index of any one of S RVs, and the indexes of the S RVs satisfy a preset order, and the S RVs are RVs corresponding to all the first data sent by the terminal on the N time units, and S is an integer greater than N.

With reference to the seventh aspect, in a possible implementation manner, the first indication information is used to indicate an RV index, and the RV index corresponds to an RV sequence, and the RV sequence includes an indication for N time units. The index information of the RV corresponding to the first data sent on each time unit.

With reference to the seventh aspect, in a possible implementation manner, N=1, the N time units correspond to two first data, and the first indication information is used to indicate two corresponding to the N time units The index of the RV corresponding to the first data; wherein the indexes of the RV corresponding to the two first data corresponding to the N time units are 0 and 2, respectively, or the two first data corresponding to the N time units The indexes of the corresponding RVs are 2 and 3, respectively, or the indexes of the RVs corresponding to the two first data corresponding to the N time units are 3 and 1, respectively, or the two corresponding The indexes of RV corresponding to a piece of data are 1 and 0, respectively.

With reference to the seventh aspect, in a possible implementation manner, the method further includes: the network device receives second indication information from the terminal, where the second indication information is used to indicate reception within the same time unit The multiple first data corresponding to the same second data are merged and decoded; the network device merges and decodes the target first data based on the first indication information, including: the network device according to the first An instruction message and the second instruction message merge and decode the target first data. The target first data is received from the same time unit in the same time unit of the N time units. The first data generated by the second data.

With reference to the seventh aspect, in a possible implementation manner, in a case where N is greater than 1, the method further includes: the network device receives third indication information from the terminal, and the third indication information is used to Instructing to merge and decode all the first data corresponding to the same second data received in M′ time units, M′ is an integer greater than or equal to M; the network device sets the target number based on the first indication information A data is merged and decoded, including: the network device merges and decodes the target first data according to the first indication information and the third indication information, the target first data is on M time units All the received first data generated from the same second data.

According to an eighth aspect, a data transmission method is provided, including: a terminal receiving first indication information from a network device, the first indication information being used by the terminal to determine each of the N time units of the terminal The index of the RV corresponding to the first data sent on the Internet, each of the first data is generated from the second data corresponding to the first data, and N is a positive integer; the terminal according to the first indication information in the The corresponding first data is sent on each time unit of the N time units.

With reference to the eighth aspect, in a possible implementation manner, the first indication information is used to indicate an index of any one of S RVs, and the indexes of the S RVs satisfy a preset order, and the S RVs are RVs corresponding to all the first data sent by the terminal on the N time units, and S is an integer greater than N.

With reference to the eighth aspect, in a possible implementation manner, the first indication information is used to indicate an RV index, and the RV index corresponds to an RV sequence, and the RV sequence includes an indication for N time units. The index information of the RV corresponding to the first data sent on each time unit.

With reference to the eighth aspect, in a possible implementation manner, N=1, the N time units correspond to two first data, and the first indication information is used to indicate two corresponding to the N time units The index of the RV corresponding to the first data; wherein the indexes of the RV corresponding to the two first data corresponding to the N time units are 0 and 2, respectively, or the two first data corresponding to the N time units The indexes of the corresponding RVs are 2 and 3, respectively, or the indexes of the RVs corresponding to the two first data corresponding to the N time units are 3 and 1, respectively, or the two corresponding The indexes of RV corresponding to a piece of data are 1 and 0, respectively.

With reference to the eighth aspect, in a possible implementation manner, the method further includes: the terminal sending second indication information to the network device, where the second indication information is used to instruct to receive within the same time unit The obtained multiple first data corresponding to the same second data are combined and decoded.

With reference to the eighth aspect, in a possible implementation manner, in a case where N is greater than 1, the method further includes: the terminal sends third indication information to the network device, and the third indication information is used to Instruct to merge and decode all first data corresponding to the same second data received in M′ time units, M′ is an integer greater than 1.

With reference to the method provided in the seventh aspect or the eighth aspect, in a possible implementation manner, the second indication information is indicated by an uplink shared channel indication field and a CSI request field, when the value of the uplink shared channel indication field is 0, and when the value of the CSI request field is 1, the uplink shared channel indicator field and the CSI request field are used to indicate a plurality of first corresponding to the same second data received in the same time unit The data is merged and decoded.

With reference to the method provided in the seventh aspect or the eighth aspect, in a possible implementation manner, the second indication information is indicated by an index of the MCS and an index of the RV corresponding to a piece of first data sent on a time unit, when When the index of the MSC is 25 and the index of the RV is 1, the index of the MCS and the index of the RV are used to indicate a plurality of corresponding second data received in the same time unit The first data is merged and decoded.

With reference to the methods provided in the fifth aspect, the sixth aspect, the seventh aspect, or the eighth aspect, in a possible implementation manner, the first data is a data stream or a codeword.

With reference to the method provided in the fifth aspect, the sixth aspect, the seventh aspect, or the eighth aspect, in a possible implementation manner, for the N time units corresponding to at least two second data generated from the same second data Any one time unit of a data, and at least two first data generated from the same second data corresponding to the time unit correspond to multiple different RVs.

According to a ninth aspect, there is provided a data transmission device having the function of implementing any method provided in the fifth aspect. This function can be realized by hardware, and can also be realized by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions. For example, the apparatus may include a communication unit and a processing unit for performing an action of processing in the fifth aspect (for example, an action other than transmission and/or reception), and a communication unit for performing transmission in the fifth aspect And/or received actions. Optionally, the actions performed by the communication unit are performed under the control of the processing unit. Optionally, the communication unit includes a sending unit and a receiving unit. In this case, the sending unit is used to perform the action of sending in the fifth aspect, and the receiving unit is used to perform the action of receiving in the fifth aspect. The device can exist in the form of a chip product.

According to a tenth aspect, there is provided a data transmission device having the function of implementing any method provided in the sixth aspect. This function can be realized by hardware, and can also be realized by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions. For example, the apparatus may include a communication unit and a processing unit for performing actions of processing in the sixth aspect (eg, actions other than transmission and/or reception), and a communication unit for performing transmission in the sixth aspect And/or received actions. Optionally, the actions performed by the communication unit are performed under the control of the processing unit. Optionally, the communication unit includes a sending unit and a receiving unit. In this case, the sending unit is used to perform the action of sending in the sixth aspect, and the receiving unit is used to perform the action of receiving in the sixth aspect. The device can exist in the form of a chip product.

According to an eleventh aspect, there is provided a data transmission device having the function of implementing any method provided in the seventh aspect. This function can be realized by hardware, and can also be realized by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions. For example, the apparatus may include a communication unit and a processing unit for performing an action of processing in the seventh aspect (for example, an action other than transmission and/or reception), and a communication unit for performing transmission in the seventh aspect And/or received actions. Optionally, the actions performed by the communication unit are performed under the control of the processing unit. Optionally, the communication unit includes a sending unit and a receiving unit. In this case, the sending unit is used to perform the action of sending in the seventh aspect, and the receiving unit is used to perform the action of receiving in the seventh aspect. The device can exist in the form of a chip product.

According to a twelfth aspect, there is provided a data transmission device having a function of implementing any method provided in the eighth aspect. This function can be realized by hardware, and can also be realized by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions. For example, the apparatus may include a communication unit and a processing unit for performing actions of processing in the eighth aspect (eg, actions other than transmission and/or reception), and a communication unit for performing transmission in the eighth aspect And/or received actions. Optionally, the actions performed by the communication unit are performed under the control of the processing unit. Optionally, the communication unit includes a sending unit and a receiving unit. In this case, the sending unit is used to perform the action of sending in the eighth aspect, and the receiving unit is used to perform the action of receiving in the eighth aspect. The device can exist in the form of a chip product.

In a thirteenth aspect, a data transmission device is provided. The data transmission device includes: a memory and a processor; optionally, at least one communication interface and a communication bus; the memory is used to store computer-executed instructions, the processor, and the memory Connected to at least one communication interface through a communication bus, the processor executes computer-executed instructions stored in the memory, so that the data transmission device implements any one of the first, second, fifth to eighth aspects Kinds of methods. The device can exist in the form of a chip product.

According to a fourteenth aspect, a communication system is provided, including: the data transmission apparatus provided in the third aspect and the fourth aspect; or, the data transmission apparatus provided in the ninth aspect and the tenth aspect; or, the eleventh aspect and the first aspect A data transmission device provided in the twelfth aspect.

According to a fifteenth aspect, there is provided a computer-readable storage medium including instructions which, when run on a computer, cause a computer to perform any of the first, second, fifth to eighth aspects Any method.

According to a sixteenth aspect, there is provided a computer program product containing instructions which, when run on a computer, cause the computer to execute any of the first aspect, second aspect, fifth aspect to eighth aspect a way.

For the technical effects brought by any one of the design methods in the third aspect to the sixteenth aspect, please refer to the technical effects brought by the corresponding design methods in the first and second aspects, which will not be repeated here.

It should be noted that various possible implementation manners of any of the above aspects can be combined on the premise that the solutions are not contradictory.

BRIEF DESCRIPTION

Figure 1 is a schematic diagram of a data packet processing process at the physical layer;

2 is a flowchart of a data transmission method provided by an embodiment of the present application;

3 to 10 are schematic diagrams of sending first data according to embodiments of the present application;

11 is a schematic diagram of the composition of a data transmission device according to an embodiment of the present application;

12 is a schematic diagram of a hardware structure of a network device and a terminal provided by an embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. In the description of the present application, unless otherwise stated, “/” means or, for example, A/B may mean A or B. The "and/or" in this article is just an association relationship describing the associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, B exists alone These three situations. In addition, in the description of the present application, unless otherwise stated, "plurality" refers to two or more than two, and "at least one" refers to one or more.

In addition, in order to facilitate a clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first" and "second" are used to distinguish the same items or similar items whose functions and functions are basically the same. Those skilled in the art may understand that the words "first" and "second" do not limit the number and the execution order, and the words "first" and "second" are not necessarily different.

The technical solutions of the embodiments of the present application can be applied to various communication systems. For example: orthogonal frequency division multiple access (orthogonal frequency-division multiple access, referred to as OFDMA), single carrier frequency division multiple access (single carrier FDMA, referred to as SC-FDMA) and other systems. The term "system" can be used interchangeably with "network". Among them, the OFDMA system can realize wireless technologies such as evolved universal wireless terrestrial access (evolved universal terrestrial radio access, E-UTRA for short), ultra mobile broadband (ultra mobile broadband, UMB for short) and so on. E-UTRA is an evolved version of the Universal Mobile Telecommunications System (UMTS). The 3rd Generation Partnership Project (3GPP) is a new version using E-UTRA in long term evolution (LTE) and various versions based on LTE evolution. The 5G communication system and the new radio (NR) communication system are the next-generation communication systems under study. In addition, the communication system can also be adapted to future-oriented communication technologies, and all the technical solutions provided by the embodiments of the present application are applicable.

The method provided in the embodiments of the present application can be applied to various business scenarios, for example, enhanced mobile bandwidth (enhanced mobile broadband (eMBB) business scenario, URLLC business scenario, Internet of Things (IoT) business scenario, machine type Communication (machine type communication, MTC for short) business scenarios, etc.

The network elements involved in the embodiments of the present application include a sending end and a receiving end. The sending end is a network device and the receiving end is a terminal; or, the sending end is a terminal and the receiving end is a network device. Both the sending end and the receiving end may also be terminals. In this case, configuration information (for example, first configuration information hereinafter) and feedback information (for example, acknowledgement (ACK) or negative acknowledgement (negative- acknowledgement (NACK)), the terminal can interact with the network device, and data transmission can occur between the two terminals.

The network device may be a device deployed in a radio access network (radio access network, RAN for short) to provide a terminal with a wireless communication function, for example, a base station. The network equipment may be various forms of macro base stations, micro base stations (also called small stations), relay stations, access points (APs), etc., and may also include various forms of control nodes, such as network controllers. The control node may connect multiple base stations and configure resources for multiple terminals covered by the multiple base stations. In systems that use different wireless access technologies, the names of devices with base station functions may be different, for example, global system for mobile (GSM) or code division multiple access (code division multiple access) Access (referred to as CDMA) network can be referred to as base transceiver station (BTS), wideband code division multiple access (wideband code division multiple access (WCDMA) can be referred to as base station (NodeB), LTE system It can be called evolved NodeB (evolved NodeB, referred to as eNB or eNodeB), and it can be referred to as next generation base station (gNB) in 5G communication system or NR communication system. The specific name of the base station is not used in this application. limited. The network device can also be a wireless controller in the cloud radio access network (cloud radio access network, CRAN for short) scenario, a network device in the future evolved public land mobile network (PLMN) network, transmission and reception Node (transmission and reception point, referred to as TRP) and so on.

Terminals can also be called user equipment (user equipment, referred to as UE), terminal equipment, access terminals, user units, user stations, mobile stations, remote stations, remote terminals, mobile devices, user terminals, wireless communication devices, user agents or User device. The terminal may be a mobile station (MS), a subscriber unit (subscriber), a drone, an IoT device, a wireless local area network (WLAN) station (station, ST), or a cellular phone (cellular), smart phone, smart phone, cordless phone, wireless data card, tablet computer, session initiation protocol (SIP) phone, wireless local loop (wireless local loop (WLL) station, Personal digital processing (personal digital assistant, PDA) device, laptop computer, machine type communication (MTC) terminal, handheld device with wireless communication function, computing device, or connected to a wireless modem Other processing devices, vehicle-mounted devices, and wearable devices (also called wearable smart devices). The terminal may also be a terminal in a next-generation communication system, for example, a terminal in a 5G communication system or a terminal in a PLMN that evolves in the future, or a terminal in an NR communication system.

In order to make the embodiments of the present application more clear, the following briefly introduces the data processing process of the physical layer.

Data sent from the medium access control (MAC) layer to the physical layer is organized in the form of TB. The data in the MAC layer may include an uplink shared channel (uplink shared channel (s), referred to as UL-SCH), a downlink shared channel (downlink shared channel (s), referred to as DL-SCH), and so on. The MAC layer may send a TB to the physical layer or multiple TBs. Referring to FIG. 1, taking 2 TBs as an example for illustration, the sending end performs preprocessing, scrambling, modulation, layer mapping, precoding on each TB, Time-frequency resource mapping, and sending the signal after the time-frequency resource mapping after the first transformation. The first transform includes at least an inverse Fourier transform (IFT), and the signal after the first transform is a time domain signal.

Among them, a TB can be called a codeword after preprocessing, and the codeword can be regarded as a TB with error protection. The preprocessing includes at least channel coding and rate matching.

The codeword is scrambled and modulated to obtain the constellation symbol. After layer mapping, the constellation symbols are mapped to one or more transmission layers (transmission layers, usually also called layers). Each layer corresponds to a valid data stream. The data stream of each layer is pre-encoded to obtain the pre-encoded data stream. The precoding may include digital precoding, analog precoding, hybrid precoding, and the like. The pre-coded signal is transmitted through the antenna port, and one layer can be transmitted by at least one antenna port. Broadly speaking, precoding is to adjust the weight of the data stream sent by the antenna, including at least one of phase adjustment and amplitude adjustment. The antenna may include an antenna port (that is, a logical antenna), a physical antenna, and so on. Among them, the weights can be collectively called a precoding matrix. The dimension of the matrix is related to the adjusted antenna and the number of data streams before adjustment. For example, precoding is a process of using a precoding matrix to map a layer to an antenna port. The pre-encoded data stream is mapped onto time-frequency resources, and then converted into time-domain signals and sent out.

In order to make the embodiments of the present application more clear, the following briefly introduces some nouns involved in the embodiments of the present application.

1. Antenna port

Antenna port is a logical concept. One antenna port can correspond to one physical transmit antenna or multiple physical transmit antennas. The antenna port corresponds to the channel, and the receiving end can identify a channel through an antenna port. That is to say, if multiple physical antennas form an antenna port, the receiving end can only recognize the channel corresponding to the antenna port, and cannot identify the channel corresponding to each physical antenna. The receiving end (eg, terminal) may perform channel estimation and data demodulation according to the reference signal corresponding to the antenna port. For example, the terminal may perform channel estimation and data demodulation according to a DMRS corresponding to a de-modulation reference (DMRS) port.

Among them, if two symbols are considered to be transmitted with the same antenna port, it means that the channel experienced by one symbol can be used to infer the channel experienced by another symbol.

2. Time unit

The time unit in the embodiment of the present application may be orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM for short) symbol, mini-slot, slot, subframe, frame ( frame), radio frame, system frame, sampling point, transmission time interval (TTI), single carrier symbol (Single-carrier frequency division multiplexing symbol), etc. In the embodiments of the present application, the method provided in the embodiments of the present application is sometimes exemplified by taking the example of a time slot as a time unit. In specific implementation, the time slots in these examples may also be replaced with other time units, for example, For mini-slot.

3. The first data and the second data

The first data in the embodiment of the present application refers to data obtained after processing the second data corresponding to the first data. The processing of the second data includes at least redundant version processing. Redundant version processing includes RV generation and RV extraction. The RV generation refers to the process of adding redundant information to the second data to obtain coded bits. When data is extracted at different positions in the coded bits, multiple different versions of the second data can be obtained, and these versions may carry different redundant information, so they are called different RVs. Among them, the index of RV is used to indicate the starting position of the data extracted from the encoded bits. The values of the index of the RV include: 0, 1, 2, and 3. Different values represent the different data extracted from the encoded bits. starting point. RV extraction refers to the process of extracting an RV of the second data from the encoded bits. The first data may be the RV of the second data extracted during the RV extraction process (in this case, if the second data is TB, the first data may be regarded as the TB, specifically an RV of the TB), or may be The data obtained after processing the RV of the second data extracted in the RV extraction process. The RV corresponding to the first data is the RV of the second data obtained by performing redundant version processing on the second data corresponding to the first data. In other words, the RV corresponding to the first data means that the first data is associated with at least part of the redundant information added by the second data. The same RV corresponding to the plurality of first data means that the redundant information of the second data associated with the plurality of first data is the same, and the plurality of first data corresponding to different RV means that the second data associated with the plurality of first data The redundant information of the data is at least partially different.

In one case, the redundancy version processing can be performed before the codeword is generated. In this case, the RV generation process can be implemented in the channel coding process, and the RV extraction process can be implemented in the rate matching process. The first data may be RV of the second data extracted during the RV extraction process or a codeword generated according to the RV of the second data extracted during the RV extraction process or RV generated based on the second data extracted during the RV extraction process The second data may be TB. Among them, a data stream is also called a layer of data.

In another case, the redundancy version processing may be after generating the codeword. In this case, the first data may be the RV of the second data extracted during the RV extraction process or the second data extracted according to the RV extraction process The data stream generated by the RV, the second data is codeword or TB. In the case where the second data is a code word, the first data is data generated by adding redundant information to the code word.

4. Repeated transmission mode

Repeated data transmission mode can be divided into time-domain repeated transmission mode, air-domain repeated transmission mode and air-domain and time-domain repeated transmission mode (referred to as space-time repeated transmission mode). Wherein, the time-domain repeated transmission mode is in the prior art, that is, the data transmission method described in the background art above, and the air-domain repeated transmission mode and the space-time repeated transmission mode are provided by the embodiments of the present application. Wherein, the space-domain repeated transmission mode may be the corresponding relationship between the time unit and the first data is the repeated transmission mode in case 1 below, and the space-time repeated transmission mode may be the corresponding relationship between the time unit and the first data is as follows Repeated transmission mode of case 2 or case 3 in the text.

The original content corresponding to multiple data that is repeatedly transmitted is consistent, so these multiple data can be combined and decoded.

5. Hybrid automatic repeat request (HARQ)

HARQ is a technology that combines forward error correction (FEC) and automatic repeat request (ARQ) methods. By adding redundant information, FEC enables the receiving end to correct some errors, thereby reducing the number of retransmissions. For errors that cannot be corrected by FEC, the receiving end will request the sending end to retransmit the data through the ARQ mechanism. The receiving end uses an error detection code, such as cyclic redundancy check (cyclic redundancy check, CRC for short), to detect whether the received data packet is in error. If there is no error, the receiving end will send an ACK to the sending end. After receiving the ACK, the sending end will then send the next data packet. If there is an error, the receiving end will send a NACK to the sending end. After receiving the NACK, the sending end will retransmit the data packet. Under the HARQ mechanism, a piece of data may be sent multiple times, and multiple RVs of the data may be sent multiple times. The data rate and airspace information sent multiple times may also be different. Data sent multiple times can be combined and decoded to get the original data. In addition, the sending end may retransmit the data without receiving the ACK/NACK sent by the receiving end.

6. Transmission configuration (TCI) state

The TCI status is used to indicate quasi colocation (QCL) information between different physical signals and/or physical channels. For example, the TCI state may be used to indicate the QCL information between the channel state information reference signal (channel-state information reference (CSI-RS) and the demodulation reference signal (DMRS)).

Exemplarily, the cell format of TCI state is as follows:

The cell field is used to indicate a serving cell configured with the reference signal indicated by the QCL-info (QCL-info).

The bandwidth part identifier (bwp-Id) field is used to indicate a downlink bandwidth part (BWP) that carries the reference signal indicated by the QCL-info.

The reference signal (ReferenceSignal) field is used to configure the type and sequence number of the reference signal resource.

The QCL-type (qcl-Type) field is used to indicate the QCL type corresponding to the reference signal indicated by the QCL-info.

In the description of the embodiments of the present application, “RVx” refers to the RV with the index of “x”, and x is an integer greater than or equal to 0 and less than or equal to 3. "Same RV" means "same RV index", "different RV" means "different RV index", "same RV" means "same RV index", "different RV" means "different index" RV".

An embodiment of the present application provides a data transmission method, as shown in FIG. 2, including:

201. The sending end generates first data corresponding to each time unit in N time units.

The correspondence between the time unit and the sent first data may be any of the following cases 1 to 3:

Case 1.

N is equal to 1, and N time units correspond to at least two first data, the at least two first data correspond to the same second data, and the at least two first data correspond to at least two different RVs. Wherein, each first data is generated from the second data corresponding to the first data.

In case 1, if the number of corresponding first data on N time units is greater than 2, there may be multiple first data corresponding to the same RV, or the RV corresponding to each first data may be different.

An example of case 1 can be seen in FIG. 3, assuming that time units are time slots and N time units are first time slots. The first time slot corresponds to two first data, which are first data 1 and first data 2, respectively. The first data 1 and the first data 2 are generated from the same second data, the RV corresponding to the first data 1 is the first RV, and the RV corresponding to the first data 2 is the second RV. The first RV and the second RV may be different, for example, the first RV is RV0 and the second RV is RV1. When the first data 3 is also sent on the first time slot, the RV corresponding to the first data 3 is the third RV, then the first RV and the second RV may be the same (or different), and the third RV and the first RV (Or the second RV) may be different.

Situation 2.

If N is greater than 1, all first data corresponding to N time units correspond to the same second data, and at least one time unit among N time units corresponds to at least two first data. Wherein, each first data is generated from the second data corresponding to the first data.

In case 2, the number of first data corresponding to different time units may be the same or different. Exemplarily, suppose the time unit is a time slot, and the N time slots are a first time slot and a second time slot, respectively. Referring to FIG. 4, the first data corresponding to the first time slot is first data 1 and first data 2, and the first data corresponding to the second time slot is first data 3, that is, the number of first data corresponding to different time slots The number is different. Referring to FIG. 5, the first data corresponding to the first time slot is first data 1 and first data 2, and the first data corresponding to the second time slot is first data 3 and first data 4, that is, corresponding to different time slots The number of the first data is the same.

Situation 3.

N is greater than 1, all first data corresponding to N time units correspond to at least two different second data, and the same second data corresponds to at least two first data on different time units; wherein, each first data Generated from the second data corresponding to the first data.

In case 3, all the first data corresponding to the N time units may correspond to two different second data, or may correspond to three or more different second data. In the first data corresponding to one time unit, each first data may correspond to one second data, or a plurality of first data may correspond to the same second data, but not all the first data corresponding to the same second data On the same time unit.

Exemplarily, suppose the time unit is a time slot, and the N time slots are a first time slot and a second time slot, respectively. Referring to FIG. 6, the first data 1 on the first time slot and the first data 3 on the second time slot in FIG. 6 correspond to one second data, and the first data 2 and the second time slot on the first time slot The first data 4 on the top corresponds to another second data. In FIG. 6, all the first data corresponding to two time slots correspond to two different second data, and each of the first data corresponding to one time slot corresponds to one second data.

Exemplarily, suppose the time unit is a time slot, and the N time slots are a first time slot and a second time slot, respectively. Referring to FIG. 7, the first data 1 on the first time slot and the first data 4 on the second time slot in FIG. 7 correspond to the first second data, and the first data 2 and the second data on the first time slot The first data 5 on the time slot corresponds to the second second data, and the first data 3 on the first time slot and the first data 6 on the second time slot correspond to the third second data. In FIG. 7, all the first data corresponding to two time slots correspond to three different second data, and each of the first data corresponding to one time slot corresponds to one second data.

Exemplarily, suppose the time unit is a time slot, and the N time slots are a first time slot and a second time slot, respectively. Referring to Example 1 of FIG. 8, the first data on the first time slot 1, the first data on the first time slot 2, the first data on the second time slot 4 and the first data on the second time slot 5 Corresponding to one piece of second data, the first data 3 on the first time slot and the first data 6 on the second time slot correspond to another second data. In Example 1 in FIG. 8, all the first data corresponding to two time slots correspond to two different second data, and two of the three first data corresponding to one time slot correspond to one second data , Another first data corresponds to another second data. Referring to Example 2 in FIG. 8, the first data 1 on the first time slot 1, the first data 2 on the first time slot, and the first data 4 on the second time slot correspond to one second data, and the first time slot The first data 3 and the first data 5 on the second time slot correspond to another second data. In Example 2 in FIG. 8, all the first data corresponding to the two time slots correspond to two different second data, and two of the three first data corresponding to the first time slot correspond to a second For data, another first data corresponds to another second data, and two first data corresponding to the second time slot respectively correspond to one second data.

202. The sending end sends corresponding first data to the receiving end on each of the N time units. Correspondingly, the receiving end receives corresponding first data from the sending end on each time unit of N time units.

203. The receiving end merges and decodes the first target data.

Among them, the target first data is the first data generated from the same second data received on the same time unit in N time units; or, the target first data is received on the M time units The first data generated from the same second data.

Among them, M time units belong to N time units, and M is an integer greater than 1 and less than or equal to N.

In the specific implementation of step 203, the receiving end may separately decode each of the first data in the target first data and then merge, or may merge all the first data in the target first data and then translate. The code is not specifically limited in the embodiments of the present application.

Among them, the data merge decoding method can adopt additional combining (chase combining (abbreviated as CC), incremental redundancy (incremental redundancy, referred to as IR) and other methods. Among them, merging may include merging hard information and/or soft information. Step 203 only provides two ways for the receiving end to process the first data. In specific implementation, the receiving end can also decode each received first data separately, and can also receive the received data on M time units. All the first data and the previously received one or more data generated from the same second data are combined and decoded.

Wherein, the receiving end may determine whether the previously received data and the first data are generated from the same second data according to new data indicator (new data indicator (NDI) information). Specifically, the receiving end may determine whether the data sent by multiple time units is generated from the same second data according to the value of the NDI field or the change of the value of the NDI field.

The receiving end may also determine whether the previously received data and the first data are generated from the same second data according to the HARQ process information. The HARQ process information may be HARQ process ID, HARQ process sub-ID, and so on. The HARQ process sub-identifier may be an identifier indicating which TB the HARQ process is used for.

Optionally, the method further includes:

204. The receiving end sends the data receiving result to the sending end.

The data reception result can be ACK or NACK or other status. Among them, the other state may be a state for indicating data retransmission information. The data retransmission information may refer to the type of retransmitted data (for example, whether to retransmit the codeword or the retransmitted TB), the RV of the retransmitted data, and the method of data retransmission. When the data reception result is in another state, it can indicate that the data reception result is a decoding error, that is, an error response.

The data reception result may be used to feed back one or more decoding results (ie, whether the decoding was successful) of the first decoding result, the second decoding result, the third decoding result, and the fourth decoding result to the sending end. Among them, the first decoding result refers to a decoding result that the receiving end decodes each first data, and may be referred to as a separate decoding result. The second decoding result refers to a combined decoding result of multiple first data transmitted on the same time unit by the receiving end. The third decoding result refers to a combined decoding result of all first data transmitted on M time units by the receiving end. The fourth decoding result refers to a combined decoding result of all the first data received on the M time units and one or more data that were previously generated from the same second data and received by the receiving end.

According to the method provided in the embodiment of the present application, the sending end sends at least one time unit among a plurality of time units a plurality of first data generated from the same second data, or, in a plurality of time units to a plurality of second data Repeated transmission (that is, multiple transmissions of multiple data in multiple time units, for example, multiple TBs) is the same as sending multiple different RVs of the same TB in multiple time units (that is, the same One data, that is, the same TB is repeatedly transmitted), compared with ensuring the reliability of data transmission, it can reduce the data transmission delay and improve the data transmission efficiency. In other words, within the same transmission resource (such as transmission time), the success rate of transmission is improved, thereby improving the reliability of the entire system.

In case 2 and case 3 above, optionally, for any time unit corresponding to at least two first data generated from the same second data among the N time units, the time unit corresponds to the same time unit The at least two first data generated by the second data correspond to multiple different RVs. This optional method may enable a device that receives multiple first data generated from the same second data to obtain a signal-to-interference and noise ratio (signal to interference plus ratio) (referred to as SINR) gain (or signal to noise ratio (signal to noise ratio (referred to as SNR) gain) to improve data transmission efficiency.

In case 1 to case 3 above, optionally, in the case where any one of the N time units corresponds to at least two first data generated from the same second data, the time unit corresponds to the same Any two of the at least two first data generated by the one second data correspond to different RVs. This optional method may enable a device that receives multiple first data generated from the same second data to obtain a greater SNR gain and improve data transmission efficiency.

Where N is greater than 1, for at least two first data corresponding to the same time unit and generated from the same second data, each first data may correspond to one RV or multiple first data The data corresponds to the same RV. Among the plurality of first data generated from the same second data corresponding to different time units, each first data may correspond to one RV, or multiple first data may correspond to the same RV.

Exemplarily, suppose the time unit is a time slot, and the N time slots are a first time slot and a second time slot, respectively. Referring to FIG. 9, the first data 1, the first data 2, the first data 3, and the first data 4 are generated from the same second data. The RV corresponding to the first data 1 on the first time slot is RV0, the RV corresponding to the first data 2 on the first time slot is RV1, and the RV corresponding to the first data 3 on the second time slot is RV0, the second The RV corresponding to the first data 4 on the time slot is RV2. In the example shown in FIG. 9, the first data corresponding to the same time slot each correspond to an RV, and for different time slots, the first data 1 and the first data 3 correspond to the same RV, and the first data 2 and the first The RV corresponding to data 4 is different.

In addition, the RVs corresponding to the plurality of first data generated from different second data may be the same or different. Exemplarily, suppose the time unit is a time slot, and the N time slots are a first time slot and a second time slot, respectively. Referring to FIG. 10, the first data 1 and the first data 3 are generated from one second data, and the first data 2 and the first data 4 are generated from another second data. The RV corresponding to the first data 1 on the first time slot is RV0, the RV corresponding to the first data 2 on the first time slot is RV0, and the RV corresponding to the first data 3 on the second time slot is RV1, the second The RV corresponding to the first data 4 on the time slot is RV2. In the example shown in FIG. 10, the first data 1 and the first data 2 corresponding to the first time slot correspond to the same RV (ie RV0), and the first data 3 and the first data 4 corresponding to the second time slot correspond to different RV.

The following uses two different scenarios (denoted as scenario 1 and scenario 2) to further illustrate the further solutions included in the embodiments of the present application.

Scenario 1. The sending end is a terminal, and the receiving end is a network device.

Optionally, the method provided in the above embodiment further includes one or more of the following scheme 1 and scheme 2.

Solution 1. The receiving end sends first indication information to the sending end. The first indication information is used by the sending end to determine the index of the RV corresponding to the first data sent on each time unit of N time units. Correspondingly, the sending end receives the first indication information from the receiving end.

Optionally, for each time unit of N time units, the index of the RV corresponding to the first data sent on each time unit may form an index combination corresponding to the time unit, and the index combination may be (0, 2), (2,3), (3,1), (1,0), or the index combination may be an index combination selected from a preset index combination, optional, the preset Index combinations include (0, 2), (2, 3), (3, 1), (1,0). In this case, the first indication information may be used by the sending end to determine the index combination corresponding to each time unit of the N time units, and then determine the index of the RV corresponding to the first data sent on each time unit.

Exemplarily, if N=1 and N time units correspond to two first data, the first indication information is used to indicate the index of the RV corresponding to the two first data corresponding to N time units. The index combination corresponding to the N time units may be, for example, one of (0, 2), (2, 3), (3, 1), (1,0). That is, the indexes of the RVs corresponding to the two first data are 0 and 2, respectively, or the indexes of the RVs corresponding to the two first data are 2 and 3, respectively, or the indexes of the RV corresponding to the two first data 3 and 1 respectively, or the indexes of the RVs corresponding to these two first data are 1 and 0 respectively.

Optionally, the index of the RV corresponding to the two first data must meet a predetermined order, for example, taking the index combination (0, 2) as an example, the index of the RV corresponding to the first data 1 of the two first data is 0 At this time, the index of the RV corresponding to the first data 2 of the two first data must be 2, not 1, or 3. As another example, taking the index combination (2, 3) as an example, the index of the RV corresponding to the first data 1 is 2, and the index of the RV corresponding to the first data 2 is 3, and it cannot be 1, nor 0. However, it should be noted that which of the two first data is the first data 1 and which first data is the first data 2 may be determined according to some rules, which may be preset or configured by the network device Or as stipulated in the agreement or negotiated and determined by the terminal and the network device, this application does not limit the method for determining the rules. For example, the first data 1 may be data corresponding to a smaller frequency domain resource identifier (for example, RB index), and the first data 2 may be data corresponding to a larger frequency domain resource identifier. And vice versa.

For the role of the first indication information, please refer to Examples 1 to 4.

Example 1.

The first indication information is used to indicate the index of the RV corresponding to the first data sent by the sending end on each of the N time units. Exemplarily, based on the example shown in FIG. 10, the first indication information may indicate the index of the RV corresponding to the first data 1, the first data 2, the first data 3, and the first data 4.

In Example 1, the first indication information may include multiple RV indication fields, and one RV indication field is used to indicate an index of the RV corresponding to the first data. Among them, one RV indication field may correspond to one TB, or one RV indication field corresponds to one TCI state. The TCI state corresponding to the first data may be indicated by scheduling the TCI field in downlink control information (DCI) for the first data, and the TCI field in the DCI may indicate one or more TCI states. When the TCI field indicates multiple TCI states, the order of the multiple TCI states may be the same as the order of the indication information in the TCI field. For example, the indication information in the TCI field is sorted as indication information 1, indication information 2, and indication information 3. The indication information 1 is the information indicating the first TCI state, the indication information 2 is the information indicating the second TCI state, and the indication information 3 is the information indicating the third TCI state; optionally, multiple TCI states The order of the index can also be sorted according to the index of the TCI state indicated in the TCI field. For example, the indication information in the TCI field is sorted as indication information 1 (corresponding to TCI state index 2), indication information 2 (corresponding to TCI state index 0), Indication information 3 (corresponding to index 1 of the TCI state), then indication information 1 is the information indicating the third TCI state, indication information 2 is the information indicating the first TCI state, and indication information 3 is the second indication Information about the TCI state. Optionally, the order of the TCI state may be consistent with the order of the TCI state index from small to large, or the order of the TCI state may be consistent with the order of the TCI state index from large to small. According to the above description, it can be said that when the TCI field indicates the TCI state, the TCI state may or may not be indicated in the order of the indication information of the TCI field. Of course, optionally, the TCI state may or may not be in accordance with the TCI The order of the status index is indicated.

Exemplarily, if N=1 and N time units correspond to two first data, the RV indication field 1 may be used to indicate the index of the RV corresponding to the first data 1, and the RV indication field 2 may be used to indicate the first The index of the RV corresponding to data 2. Optionally, the RV indication field 1 corresponds to the first TB (TB corresponding to the first data 1), the RV indication field 2 corresponds to the second TB (TB corresponding to the first data 2); or, the RV indication field 1 corresponds to the TCI State 1 (the TCI state corresponding to the first data 1) corresponds, and the RV indication field 2 corresponds to the TCI state 2 (the TCI state corresponding to the first data 2). The TCI state 1 and the TCI state 2 can be indicated by the TCI field in the DCI scheduling the first data 1 and the first data 2.

Optionally, the indexes indicated by the two RV indication fields may be (0, 2), (2, 3), (3, 1) or (1,0), for example.

Optionally, the order of the indexes indicated by the two RV indication fields satisfies the predetermined order. For example, taking the index combination (0, 2) as an example, when the index indicated by the RV indication field 1 is 0, the index indicated by the RV indication field 2 must be It is 2, instead of: the index indicated by the RV indication field 1 is 2, and the index indicated by the RV indication field 2 is 0. However, it should be noted that this application does not limit which of the two RV indication domains is the RV indication domain 1 and which RV indication domain is the RV indication domain 2.

Example 2.

The first indication information is used to indicate an index of any one of the S RVs. The indexes of the S RVs satisfy a preset order, and S is an integer greater than 1.

Specifically, the indexes of the S RVs may satisfy the preset cycle order, or may be other preset orders.

Among them, the S RVs may be RVs corresponding to all the first data sent by the sending end in N time units, or may be corresponding to all the first datas sent by the sending end on part of the N time units. RV, or RV corresponding to all the first data generated from the same second data in N time units, or RV corresponding to all the first data sent on a certain time unit Or, it can also be the RV corresponding to all the first data generated from the same second data on a certain time unit. This embodiment of the present application does not specifically limit this. In different cases, the value of S may also be different, and the specific value can be determined according to the actual situation. For example, in the case where S RVs are RVs corresponding to all the first data sent by the transmitting end in N time units, S is an integer greater than N.

Exemplarily, the first indication information may indicate the index of a certain RV (denoted as the first RV) among the S RVs, such as the index of the first RV or the index of the last RV.

Among them, the S RVs may be sorted according to the identifier of the first data in ascending order or ascending order. The first data with the same identifier on different time units are sorted according to the number of the time unit from small to large or from large to small. Exemplarily, referring to FIG. 5, if the identifiers of the first data 1 and the first data 3 are both 0, and the identifiers of the first data 2 and the first data 4 are 1, then the first RV of the S RVs to The fourth RV may be: an RV corresponding to the first data 1, an RV corresponding to the first data 3, an RV corresponding to the first data 2, and an RV corresponding to the first data 4.

The S RVs may also be sorted in the order of the time unit number from small to large or from large to small. The first data on the same time unit is sorted according to the order from the smallest to the largest or the largest to the smallest. Exemplarily, referring to FIG. 5, if the identifiers of the first data 1 and the first data 3 are both 0, and the identifiers of the first data 2 and the first data 4 are 1, then the first RV of the S RVs to The fourth RV may be: an RV corresponding to the first data 1, an RV corresponding to the first data 2, an RV corresponding to the first data 3, and an RV corresponding to the first data 4.

It should be noted that the number of the S RVs in the embodiment of the present application may start from 0 or start from 1. When it is the former, the RV numbered s-1 is the s-th RV among the S RVs. In the embodiment of the present application, the method provided by the embodiment of the present application is exemplarily described by taking the number of S RVs starting from 0 as an example. s is an integer greater than 0 and less than or equal to S. It should be noted that S RVs are RVs corresponding to the S first data, one first data corresponds to one RV, and RVs with different numbers in the S RVs are used to distinguish RVs corresponding to different first data.

Exemplarily, the preset loop sequence satisfied by the indexes of the S RVs may include the indexes of all types of RVs (the RVs with different indexes are different types of RVs). Exemplarily, referring to Table 1, the preset loop sequence satisfied by the indexes of the S RVs may be: 0→2→3→1→0→2→3→1→... The first indication information indicates the index of the start of the loop. For example, when the first indication information indicates that the index of the start of the loop is 0, that is, the first indication information indicates 0 in the leftmost column in Table 1, the S number starting from the first RV The indexes of RV are: 0, 2, 3, 1, 0, 2, 3, 1, .... When the first indication information indicates that the start index of the loop is 2, that is, the first indication information indicates 2 in the leftmost column in Table 1, the S RVs starting from the first RV The indexes are: 2, 3, 1, 0, 2, 3, 1, 0,... When the first indication information indicates that the start index of the loop is 3, that is, the first indication information indicates 3 in the leftmost column in Table 1, the S RVs starting from the first RV The indexes are: 3, 1, 0, 2, 3, 1, 0, 2, .... When the first indication information indicates that the start index of the loop is 1, that is, the first indication information indicates 1 in the leftmost column in Table 1, the S RVs starting from the first RV The indexes are: 1, 0, 2, 3, 1, 0, 2, 3, ....

Based on the example shown in Table 1, in the case where the first indication information indicates the index of the RV numbered 0 and the index of the RV is 0, the index of the RV numbered 1 is 2, and the RV numbered 2 The index of is 3, the index of RV number 3 is 1, the index of RV number 4 is 0, and so on.

Table 1

Note: s'is an integer greater than or equal to 0 and less than S. The specific value of the index of the RV numbered s'can be determined according to the value after s'takes the remainder of 4 (that is, s'mod 4). The columns from left to right in Table 1 are sequentially referred to as columns 1 to 5. Specifically, if the value of s'after taking the remainder of 4 is 0, then the index of the RV numbered s'is the value in column 2 of Table 1, specifically which value in column 2 can be based on the first indication The index of the RV indicated by the information is determined. If the value of s'after taking the remainder of 4 is 1, the index of the RV numbered s'is the value in column 3 of Table 1, specifically which value in column 3 can be indicated according to the first indication information The RV index is determined. If the value of s'after taking the remainder of 4 is 2, the index of the RV numbered s'is the value in column 4 of Table 1, specifically which value in column 4 can be indicated according to the first indication information The RV index is determined. If the value of s'after taking the remainder of 4 is 3, the index of the RV numbered s'is the value in column 5 of Table 1, specifically which value in column 5 can be indicated according to the first indication information The RV index is determined.

Since the S RVs satisfy the preset cycle order, after determining the index of the start of the cycle order, the receiving end may determine each RV corresponding to the S RVs according to the function mod(s', k) , The index of mod(s', k) = s'mod k, s'mod k specifically means that s'surplus k. mod(s', k) indicates that the order of S RV indexes has a cyclic characteristic. In Table 1, k=4 is taken as an example to illustrate, in actual implementation, k may also be other values, for example, k may also be 2 or 8, and so on. k may be determined according to the number of time units in which data is repeatedly transmitted and/or the number of first data generated from the same second data corresponding to one time unit. For example, k may be determined according to a function of the number of time units in which data is repeatedly transmitted and the number of first data generated from the same second data corresponding to one time unit. Exemplarily, the function may be a multiplication function. For example, when the number of time units for repeated data transmission is 4, and each time unit corresponds to 2 codewords, k is the product of 4 and 2, which is 8.

Wherein, s'may also be the number of the first data.

It should be noted that the preset loop sequence satisfied by the indexes of the S RVs can also be: 0→1→2→3→0→1→2→3→…, or, 0→1→0→1→0 →1→…, or, 0→0→0→…etc. This embodiment of the present application does not specifically limit this.

Exemplarily, if N=1 and N time units correspond to two first data, the RV corresponding to the first data 1 of the two first data is recorded as the first RV, and the first data 2 of the two data The corresponding RV is recorded as the second RV. The first indication information may indicate an RV index. Based on Table 1.1, the first RV and the second RV may be determined according to the index of the RV indicated by the first indication information. For example, if the first indication information indicates that RV is RV0, the first RV is RV0 and the second RV is RV2. If the first indication information indicates that RV is RV2 and the first RV is RV2, then the second RV is RV3. Among them, the first data 1 may correspond to the TCI state 1, and the first data 2 may correspond to the TCI state 2. The TCI state 1 and the TCI state 2 can be indicated by the TCI field in the DCI scheduling the first data 1 and the first data 2. It should be noted that which of the two first data is the first data 1 and which first data is the first data 2 may be determined according to some rules, which may be preset or configured by the network device Or as stipulated in the agreement or negotiated by the terminal and the network equipment, this application does not limit the method for determining the rules. For example, the first data 1 may be data corresponding to a smaller frequency domain resource identifier (for example, RB index), and the first data 2 may be data corresponding to a larger frequency domain resource identifier. And vice versa.

Table 1.1

第一指示信息指示的RV的索引The index of the RV indicated by the first indication information	第一RVFirst RV	第二RVSecond RV
00	00	22
22	22	33
33	33	11
11	11	00

In Example 2, the terminal may learn the index of the RV corresponding to the S first data according to the first indication information and the preset cyclic order satisfied by the indexes of the S RVs, and the network device may not indicate the index of each RV, thereby saving Transmission resources.

Example 3.

The first indication information is used to indicate an RV index corresponding to an RV sequence, and the RV sequence includes an RV corresponding to the first data sent on each time unit of N time units. Indexed information.

It should be noted that the numbering of the N time units in the embodiment of the present application may start from 0 or start from 1. When it is the former, the time unit numbered n-1 is the nth time unit among the N time units. In the embodiment of the present application, the method provided by the embodiment of the present application is exemplarily described by taking the number of N time units starting from 0 as an example. n is an integer greater than 0 and less than or equal to N.

Exemplarily, if the number of first data sent by the sending end on N time units is 2, the corresponding relationship between an RV index and an RV sequence can be referred to Table 2, and different RV indexes can be Corresponding to different RV sequences, for example, the indexes of the four RVs in the leftmost column in Table 2 each correspond to an RV sequence. Based on the example shown in Table 2, if the index of the RV indicated by the first indication information is 2, the indexes of the RVs of the two first data sent on the time unit with the number 0 are 2 and 3, respectively, with the number 1 The RV indexes of the two first data sent on the time unit are 3 and 0, and so on.

Table 2

Note: W is an integer greater than or equal to 0 and less than N.

Table 2 exemplarily shows a correspondence between the value of the first indication information (that is, the index of the RV indicated by the first indication information) and the RV sequence. In specific implementation, the value of the first indication information and the RV sequence may also be other corresponding relationships, which are not limited in the embodiments of the present application.

The correspondence between the RV index and the RV sequence may be preset in the terminal or generated by the terminal itself, or may be sent to the terminal by the network device. In the latter case, the method further includes: the receiving end sends the first configuration information to the sending end. Correspondingly, the sending end receives the first configuration information from the receiving end. The first configuration information is used to configure the correspondence between the RV index and the RV sequence.

The first configuration information may be configured by higher layer signaling (for example, radio resource control (RRC) signaling, and/or MAC control element (MAC control element) signaling).

In Example 3, the terminal may learn the index of the RV corresponding to each first data according to the first indication information and the correspondence between the RV index and the RV sequence, and the network device may not indicate the index of each RV, thereby saving transmission Resources.

Example 4.

The first indication information indicates an index identifier (which may be an RV index, may or may not be an index value as a search correspondence relationship), an index identifier corresponds to an RV sequence, and the index identifier indicated according to the first indication information may The RV sequence is determined, and then the index of the RV corresponding to each first data is determined.

Exemplarily, if N=1 and N time units correspond to two first data, the RV corresponding to the first data 1 of the two first data is recorded as the first RV, and the first data 2 of the two data The corresponding RV is recorded as the second RV. The first indication information may indicate an index identifier. Based on Table 2.1, the first RV and the second RV may be determined according to the index identifier indicated by the first indication information. For example, if the index indicator indicated by the first indication information is X1, the first RV is RV0 and the second RV is RV2. If the index indicator indicated by the first indication information is X2, the first RV is RV2, and the second RV is RV3. Among them, the first data 1 may correspond to the TCI state 1, and the first data 2 may correspond to the TCI state 2. The TCI state 1 and the TCI state 2 can be indicated by the TCI field in the DCI scheduling the first data 1 and the first data 2. It should be noted that which of the two first data is the first data 1 and which first data is the first data 2 may be determined according to some rules, which may be preset or configured by the network device Or as stipulated in the agreement or negotiated by the terminal and the network equipment, this application does not limit the method for determining the rules. For example, the first data 1 may be data corresponding to a smaller frequency domain resource identifier (for example, RB index), and the first data 2 may be data corresponding to a larger frequency domain resource identifier. And vice versa.

Table 2.1

第一指示信息指示的索引标识Index indicator indicated by the first indication information	第一RVFirst RV	第二RVSecond RV
X1X1	00	22
X2X2	22	33
X3X3	33	11
X4 X4	11	00

Similarly, the first indication information in the first column in Table 1 and Table 2 may also be an index identifier. The determination of the correspondence between the index identifier and the RV index is similar to the determination of the correspondence between the RV index and the RV sequence, which can be understood with reference to the above and will not be described in detail.

Table 1, Table 1.1, Table 2 and Table 2.1 in the embodiment of the present application are merely exemplary representations of the meanings shown in the table, and may also have other forms, for example, the rows and columns of the table may be changed, or, the table It can also be described by text.

Based on the above examples 1 to 4, step 202, when specifically implemented, may include: the sending end sends the corresponding first data to the receiving end on each of the N time units based on the first indication information. Step 203, when specifically implemented, includes: 11) The receiving end merges and decodes the target first data based on the first indication information.

Before step 11), the method further includes: 21) the receiving end determines the RV corresponding to each first data of the target first data based on the first indication information. In this case, step 11) during specific implementation may include: the receiving end combining and decoding the target first data according to the RV corresponding to each first data in the target first data.

Wherein, based on the above example 1, step 21) in specific implementation, the receiving end may directly determine the RV corresponding to each first data in the target first data based on the first indication information. Based on the above example 2, step 21) In specific implementation, the receiving end may calculate or look up a table based on the first indication information and the preset cyclic sequence satisfied by the indexes of the S RVs to obtain each first data in the target first data Corresponding RV. Based on the above example 3, the receiving end may determine the RV sequence based on the correspondence between the RV index and the RV sequence and the first indication information, and determine the RV corresponding to each first data in the target first data according to the RV sequence. Based on the above example 4, the receiving end may determine the RV sequence based on the correspondence between the index identifier and the RV sequence and the first indication information, and determine the RV corresponding to each first data in the target first data according to the RV sequence. In addition, it should be noted that the sending end may also determine the index of the RV corresponding to the first data sent by each time unit. In this case, the time unit and the index of the RV corresponding to the first data sent can be determined based on a mathematical function. For example, the input of the mathematical function can be a time unit or TB or the codeword or data stream number, and the output can be The index of the RV corresponding to the first data sent on the time unit. For another example, the mathematical function may be a random number function, and the random number seed of the random number function may be determined by the terminal itself or may be indicated by the receiving end.

It should be noted that the solution described in Example 1, the solution described in Example 2, the solution described in Example 3, and the solution described in Example 4 in the embodiments of the present application do not depend on the above steps 201 to 202, and all Realize independently. In the case of independent implementation, these independent solutions may also be combined with other solutions in the embodiments of the present application, and the embodiments of the present application are not limited.

Solution 2: The receiving end sends fourth indication information to the sending end. The fourth indication information is used to indicate N′, where N′ is the number of time units in which the sending end sends the first data, and N′ is an integer greater than or equal to N.

In this case, when step 202 is specifically implemented, the sending end sends the corresponding first data to the receiving end on each of the N time units according to the fourth indication information.

N'may be indicated by the fourth indication information, or may be pre-configured (for example, a protocol agreement). The sending end and the receiving end can determine N according to N'and the nature of the time unit, whether there are other channels, and so on. The nature of the time unit includes whether the time unit is available for signal transmission.

It should be noted that the values of N'and N may be different. For example, when there are unavailable time units in N'time units, N'is greater than N. For downlink data, the uplink time unit is an unavailable time unit. For upstream data, the downstream time unit is an unavailable time unit. The unavailable time unit may also be a defined unusable time unit, and the unavailable time unit may also be a defined unusable time unit.

For example, in the case where the time unit is a time slot, if N'is 4, the time unit at which the sending end starts sending the first data is time slot 0, then the time slot at which the sending end sends the first data is from time slot 0 to time slot 3. N'time slots are time slot 0, time slot 1, time slot 2, and time slot 3. If the time slot 2 is a downlink time slot, the sending end cannot send the first data in the time slot 2. At this time, the sending end sends the first data in time slot 0, time slot 1 and time slot 3, that is, N time slots are time slot 0, time slot 1 and time slot 3.

Scenario 2: The sending end is a network device, and the receiving end is a terminal.

Optionally, the method provided in the above embodiment further includes one or more of the following scheme 3 and scheme 4.

Scheme 3. The sending end sends first indication information to the receiving end. The first indication information is used by the receiving end to determine the index of the RV corresponding to the first data received on each of the N time units. Correspondingly, the receiving end receives the first indication information from the sending end. For the role of the first indication information, please refer to the above examples 1 to 4, which will not be repeated here.

In Example 3, the correspondence between the RV index and the RV sequence may be preset in the terminal or generated by the terminal itself, or may be sent to the terminal by the network device. In the latter case, the method further includes: the sending end sends the first configuration information to the receiving end. Correspondingly, the receiving end receives the first configuration information from the sending end. For the related description of the first configuration information, please refer to the above, which will not be repeated here.

Based on the above examples 1 to 4, step 202, when specifically implemented, may include: the sending end sends the corresponding first data to the receiving end on each of the N time units based on the first indication information. The specific implementation of step 203 includes: 31) The receiving end merges and decodes the target first data according to the first indication information.

Before step 31), the method further includes: 41) The receiving end determines the RV corresponding to each first data in the target first data according to the first indication information. In this case, step 31) may include: The receiving end merges and decodes the target first data according to the RV corresponding to each first data in the target first data.

Wherein, based on the above example 1, step 41) in specific implementation, the receiving end may directly determine the RV corresponding to each first data in the target first data according to the first indication information. Based on the above example 2, step 41) In specific implementation, the receiving end may calculate or look up the table according to the first indication information and the preset cyclic sequence satisfied by the indexes of the S RVs to obtain each first data in the target first data Corresponding RV. Based on the above example 3, step 41) In the specific implementation, the receiving end may determine the RV sequence according to the correspondence between the RV index and the RV sequence and the first indication information, and determine each of the first data in the target first data according to the RV sequence RV corresponding to one data. Based on the above Example 4, step 41) In specific implementation, the receiving end may determine the RV sequence according to the correspondence between the index identifier and the RV sequence and the first indication information, and determine each first in the target first data according to the RV sequence The RV corresponding to the data.

Scheme 4. The sending end sends fourth indication information to the receiving end. The fourth indication information is used to indicate N′, where N′ is the number of time units in which the sending end sends the first data, and N′ is an integer greater than or equal to N.

In this case, the specific implementation of the above step 202 includes: the sending end sends the corresponding first data to the receiving end on each of the N time units based on the fourth indication information. Correspondingly, the receiving end The four indication information receives the corresponding first data from the sending end on each of the N time units.

It should be noted that the values of N'and N may be different. For details, please refer to the description above, and no more details will be given here.

It should be noted that the solutions described in solution 1 and solution 3 in the embodiments of the present application do not depend on the above steps 201 to 202, and can be implemented independently. In the case of independent implementation, these independent solutions may also be combined with other solutions in the embodiments of the present application, and the embodiments of the present application are not limited. Exemplarily, when the solution 1 is independently implemented, the combination with other solutions can be found in the seventh and eighth aspects of the invention. When the solution 3 is independently implemented, the combination with other solutions can be found in the fifth and sixth aspects of the invention. content. I won't repeat them here.

In addition to the further scenarios of scenario 1 and scenario 2 above:

In a possible implementation manner (recorded as the first possible implementation manner), the sending end may also indicate to the receiving end whether to perform combined decoding of data in time units and/or combined translation of data between time units code. In another possible implementation manner (denoted as the second possible implementation manner), the sending end may also indicate to the receiving end to perform joint decoding between TB or codewords or data streams. The two possible implementations are described separately below.

In the first possible implementation:

Optionally, the method further includes: the sending end sends second indication information to the receiving end, where the second indication information is used to instruct to merge a plurality of first data corresponding to the same second data received in the same time unit Decode. Correspondingly, the receiving end receives the second indication information from the sending end.

In this case, step 203 when specifically implemented may include: the receiving end merges and decodes the target first data according to the second indication information, and the target first data is received on the same time unit among N time units The first data generated from the same second data.

In the specific implementation of step 203, exemplarily, when the first data is a codeword, the receiving end may merge multiple codewords corresponding to the same second data in the same time unit according to the second indication information Decode. In the case where the first data is a data stream, the receiving end may merge and decode multiple data streams (ie, multiple layers of data) corresponding to the same second data in the same time unit according to the second indication information.

Among them, the second indication information can be indicated by any one of the following methods 1 to 4, wherein method 1 is applicable to downlink data, method 2 and method 3 are applicable to uplink data, and method 4 is applicable to both downlink data and For upstream data.

Method 1 (the sending end is a network device)

The second indication information is indicated by the downlink aggregation factor (ie, pdsch-AggregationFactor) field. When the value of the pdsch-AggregationFactor field is 1, the pdsch-AggregationFactor field is used to indicate the corresponding second data received in the same time unit. The multiple first data are combined and decoded.

Among them, the pdsch-AggregationFactor field can be configured in high-level signaling (for example, RRC signaling, MAC CE signaling, etc.). When the network device sends multiple first data corresponding to the same second data in one time unit, when the value of the pdsch-AggregationFactor field is 1, this field indicates that the terminal corresponds to the same first unit in the same time unit. Multiple first data of two data are combined and decoded.

Method 2 (the sending end is the terminal)

The second indication information is indicated by the uplink aggregation factor (pusch-AggregationFactor) field. When the value of the pusch-AggregationFactor field is 1, the pusch-AggregationFactor field is used to indicate the corresponding to the same second data received in the same time unit. Multiple first data are combined and decoded.

Among them, the pusch-AggregationFactor field can be configured in high-level signaling (for example, RRC signaling, MAC CE signaling, etc.). When the terminal sends multiple first data corresponding to the same second data in one time unit, when the value of the pusch-AggregationFactor field is 1, this field indicates that the network device responds to the corresponding same received in the same time unit Multiple first data of one second data are combined and decoded.

Method 3 (the sending end is the terminal)

The second indication information is indicated by the uplink shared channel indicator (UL-SCH indicator) field and the CSI request (CSI request) field. When the value of the UL-SCH indicator field is 0 and the value of the CSI request field is 1, the UL-SCH The indicator field and the CSI request field are used to instruct to merge and decode multiple first data corresponding to the same second data received in the same time unit.

Among them, the UL-SCH indicator field and CSI request field may be configured in downlink control information (downlink control information, DCI for short).

Method 4 (the sending end is a network device or terminal)

The second indication information is indicated by the index of the modulation and coding scheme (MCS) corresponding to the first data sent on a time unit and the index of the RV. When the index of the MSC is 25 and the index of the RV is 1. At this time, the index of the MCS and the index of the RV are used to instruct to merge and decode multiple first data corresponding to the same second data received in the same time unit.

It should be noted that, one DCI may include information of the MCS index and RV index corresponding to 2 TBs. In the case where the first data is a data stream, if the index of the MCS corresponding to one of the two TBs is 25 and the index of the RV is 1, it means that the sending end only sent one TB on the time unit scheduled by the DCI And multiple data streams corresponding to the same second data in the same time unit are combined and decoded. In the case where the first data is a codeword, if the index of the MCS corresponding to one of the two TBs is 25 and the index of the RV is 1, it indicates that the sending end sent 2 TBs in the time unit scheduled by the DCI And multiple codewords corresponding to the same second data in the same time unit are combined and decoded.

Exemplarily, the MCS and RV corresponding to TB0 of the two TBs are respectively denoted as MCS-0 and RV-0, and the MCS and RV corresponding to TB1 are respectively denoted as MCS-1 and RV-1. In the case where the first data is a data stream, if the index of MCS-1 is 25 and the index of RV-1 is 1, it indicates that the sender has sent only one TB on the time unit scheduled by DCI and within the same time unit The multiple data streams corresponding to the same second data need to be combined and decoded. In the case where the first data is a codeword, if the index of MCS-1 is 25 and the index of RV-1 is 1, it indicates that the sending end sent two TBs in the time unit scheduled by DCI, and within the same time unit The multiple codewords corresponding to the same second data need to be combined and decoded. The same time unit may be a time unit that transmits TB0, or may be any one or more time units among the N time units.

In the case where the first data is a codeword, a possible implementation manner, MCS, RV, and NDI corresponding to TB1 (NDI is used to indicate whether TB is newly transmitted or retransmitted) can refer to TB0.

In the case where the first data is a codeword, another possible implementation manner, the MCS and NDI corresponding to TB1 may refer to TB0. At this time, since the NDI of TB1 refers to the NDI of TB0, at this time, the NDI of TB1 can be used for other purposes. For example, the NDI of TB1 can be used to indicate the RV corresponding to TB1. When the NDI value of TB1 is 0, the RV corresponding to TB1 is the same as the RV corresponding to TB0. When the NDI value of TB1 is not 0, the RV corresponding to TB1 The index of can be: (index of RV corresponding to TB0+3) mod3.

It should be noted that TB0 and TB1 in the embodiments of the present application only refer to two TBs, and the two TBs may be any two TBs, for example, the two TBs may also be TB1 and TB2.

Optionally, in a case where N is greater than 1, the above method further includes: the sending end sends third indication information to the receiving end, and the third indication information is used to indicate that the corresponding second received in M'time units corresponds to the same second All the first data of the data are combined and decoded. Correspondingly, the receiving end receives the third indication information from the sending end.

The function of the third indication information can also be described as: the third indication information is used to indicate the first corresponding to the same second data within each time unit of M′ time units and M′ time units received indirectly One data is merged and decoded. That is to say, the third instruction information not only instructs to merge and decode the first data in the time unit, but also instructs to merge and decode the first data between the time units.

In this case, the specific implementation of step 203 may include: the receiving end merges and decodes the target first data according to the third indication information, and the target first data is the same second data received on M time units All first data generated.

It should be noted that the number of merged and decoded time units indicated by the sender to the receiver and the actual number of decoded time units of the receiver may be the same or different, that is, the values of M'and M It may be the same or different. In addition, the number of time units actually combined and decoded at the receiving end and the number of time units combined and decoded indicated by the transmitting end to the receiving end are not necessarily the same as the number of time units at which the first data is sent by the transmitting end. That is, the values of M, M'and N may be the same or different. For example, in one case, the network device indicates to the terminal that data is repeatedly transmitted on 4 (ie, N'=4) time units. Since there are unavailable time units in the 4 time units, the terminal is actually at 3( That is, N=3) repeated transmission of data in time units. After that, the terminal may instruct the network device to merge and decode the corresponding first data generated from the same second data on 3 (that is, M'=3) time units, and the network device may only perform 2( That is, M=2) the corresponding first data generated from the same second data on the time units are combined and decoded.

The third indication information may be indicated in any one of the following manner one or manner two, where the manner one is applicable to downlink data and the manner two is applicable to uplink data.

Method one (the sending end is a network device)

The third indication information is indicated by the pdsch-AggregationFactor field. When the value of the pdsch-AggregationFactor field is M', the pdsch-AggregationFactor field is used to indicate all the first corresponding to the same second data received in M'time units The data is merged and decoded.

Among them, the pdsch-AggregationFactor field can be configured in high-level signaling (for example, RRC signaling, MAC CE signaling, etc.).

It should be noted that when the pdsch-AggregationFactor field is not configured in the RRC signaling, the receiving end does not perform combined decoding on the first data received indirectly within the same time unit and different time units.

Method two (the sending end is the terminal)

The third indication information is indicated by the pusch-AggregationFactor field. When the value of the pusch-AggregationFactor field is M', the pusch-AggregationFactor field is used to indicate all the first corresponding to the same second data received in M'time units. The data is merged and decoded.

Among them, the pusch-AggregationFactor field can be configured in high-level signaling (for example, RRC signaling, MAC CE signaling, etc.).

The above second indication information is used to indicate the combined decoding of data within the time unit, and the third indication information is used to indicate the combined decoding of data within the time unit and between time units. In specific implementation, the second indication information may also indicate the combined decoding of data within the time unit, and other indication information (eg, fifth indication information) may indicate the combined decoding of the data between time units. Through the second indication information and The fifth indication information collectively indicates the combined decoding of data within and between time units. For the uplink data, a possible implementation manner, the fifth indication information can be indicated by the pusch-AggregationFactor field. When the value of the pusch-AggregationFactor field is M', the pusch-AggregationFactor field is used to indicate the The first data corresponding to the same second data received at different time units are combined and decoded. For downlink data, a possible implementation manner, the fifth indication information can be indicated by the pdsch-AggregationFactor field. When the value of the pdsch-AggregationFactor field is M', the pdsch-AggregationFactor field is used to indicate the The first data corresponding to the same second data received at different time units are combined and decoded.

In addition, the receiving end may also determine to perform combined decoding of the data in the time unit and/or combined decoding of the data between the time units according to other methods. For example, if the receiving end receives multiple DCIs with the same HARQ ID before performing HARQ feedback of the first data, the first data scheduled by the multiple DCIs are combined and decoded. It can be understood that, at this time, if the first data scheduled by the plurality of DCIs are transmitted on one time unit, the receiving end performs the combined decoding of the data in the time unit, if the first data scheduled by the plurality of DCIs When transmitting on multiple time units, the receiver performs the combined decoding of the data within and between the time units. Further, if the first data scheduled by the multiple DCIs are transmitted on multiple time units, the number of time units for combined decoding may also be indicated through the fifth indication information. Exemplarily, if the plurality of DCI scheduled first data is transmitted on 5 time units, and the fifth indication information indicates that the first data transmitted on 3 time units is combined and decoded, the receiving end The first data transmitted on the three time units in the unit is combined and decoded.

In the second possible implementation:

Optionally, the method further includes: the sending end sends sixth indication information to the receiving end, where the sixth indication information is used to indicate the combined decoding of the TB or codeword or data stream generated from the same second data.

In this case, the above step 203 may be replaced by: the receiving end performs combined decoding on the TB, codeword or data stream generated from the same second data.

The sixth indication information may be indicated in any of the following manner (1) or manner (2).

Way (1)

The sixth indication information indicates that the TB, codeword or data stream generated from the same second data is combined and decoded.

In this case, the same second data may be upper layer data. In the case of TB combining and decoding, since the number of TBs transmitted on a time unit is at most 2, the sixth indication information may directly indicate that data combining is performed Decoding is sufficient. For example, the sixth indication information may be indicated by a bit. When the value of this bit is 1 (or 0), it indicates that the TB, codeword, or data stream generated from the same second data is combined and decoded.

In the case where codewords or data streams are combined and decoded, the sixth indication information may indicate the index/identification of the codewords or data streams that need to be combined and decoded.

Exemplarily, the DCI may include two RV indications, which are used to indicate the RVs corresponding to the 2 TBs. Wherein, the two RV indications are a first RV indication and a second RV indication, respectively. The first RV indication refers to the RV indication of the first TB, and the second RV indication refers to the RV indication of the second TB. In the embodiment of the present application, the first RV indication in the DCI is used to indicate the information of the RV corresponding to each of the 2 TBs, and the second RV indication is used to indicate whether different TBs are to be combined and decoded. The second RV indication can also be used to indicate whether TBs sent in different time units are combined and decoded.

Referring to Table 2 above, the first RV indication may be used to indicate the RV information corresponding to the two TBs on each time unit. In this case, referring to Table 3, the second RV indication may indicate whether the two TBs perform data merge decoding.

table 3

第六指示信息指示的RV的索引The index of the RV indicated by the sixth indication information	是否进行数据合并译码Whether to perform data merge decoding
第一取值First value	两个TB进行数据合并译码Two TB data merge decoding
第二取值Second value	两个TB不进行数据合并译码Two TBs do not perform data merge decoding
第三取值Third value	保留Keep
第四取值Fourth value	保留Keep

The value of the sixth indication information can also be used to indicate whether TBs of multiple time units are to be combined and decoded.

Optionally, when the network device configures the terminal for the repeated transmission mode, the terminal will interpret the RV indication in the DCI according to the meaning indicated by the above RV indication; when in the non-repetitive transmission mode, or when the number of repeated transmissions is one , The terminal interprets the first RV indication to indicate the RV of the first TB, and the second RV indication to indicate the RV of the second TB.

Way (2)

The sixth indication information indicates the combination of the indexes of the RVs corresponding to the two first data merged and decoded. In this case, the sixth indication information may be information sent by the network device to the terminal.

In this case, if the combination of the RV index corresponding to the first data sent by the sending end is a combination that performs merge decoding, the receive end performs merge decoding on the first data. If the combination of the RV index corresponding to the first data sent by the sending end is a combination that does not perform merge decoding, the receive end does not perform merge decoding on the first data.

Exemplarily, when the index combination of the RV corresponding to the first codeword and the second codeword is 0+3, it indicates that the two codewords are combined and decoded; the first codeword and the second codeword When the corresponding RV index combination is 3+0, it means that the two codewords are not combined for decoding.

It should be noted that the first possible implementation manner and the second possible implementation manner described above can be combined, so as to implement an indication of whether the time unit and the TB (or codeword or data stream) perform data merge decoding.

In addition to the method provided in the above embodiment, when multiple first data sent by one time unit correspond to multiple RVs, the sending end also needs to determine which antenna ports transmit data corresponding to which RVs. In this case, the RV and the antenna port may have a corresponding relationship. For example, the RV index is mapped from small to large to the antenna port from small to large (or from large to small); or, the RV index is mapped from small to large to small to large (or from large to small) On the DMRS port in the DMRS group; or, the RV index and the DMRS port have other preset correspondences; or, the correspondence between the RV index and the DMRS port is indicated by the network device. Exemplarily, when the RV corresponding to the codeword 1 and the codeword 2 sent on the first time slot are RV0 and RV1, respectively, then RV0 may correspond to the first DMRS port in the DMRS group 1 and RV1 may correspond to the DMRS group 2 Corresponds to the first DMRS port in, that is, codeword 1 uses the DMRS on the first DMRS port in DMRS group 1 for data demodulation, and codeword 2 uses the first DMRS port in DMRS group 2 The DMRS performs data demodulation.

Any one or more of the first indication information to the sixth indication information in the foregoing embodiments may be carried in RRC signaling, or MAC CE signaling, or DCI.

The above mainly introduces the solutions of the embodiments of the present application from the perspective of interaction between various network elements. It can be understood that, in order to realize the above-mentioned functions, each network element, for example, a network device and a terminal includes a hardware structure and/or a software module corresponding to each function. Those skilled in the art should be easily aware that, in conjunction with the exemplary units and algorithm steps described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is performed by hardware or computer software driven hardware 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.

The embodiments of the present application may divide the functional unit of the network device and the terminal according to the above method example. For example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit. The above integrated unit can be implemented in the form of hardware or software function unit. It should be noted that the division of the units in the embodiments of the present application is schematic, and is only a division of logical functions. In actual implementation, there may be another division manner.

In the case of using an integrated unit, FIG. 11 shows a possible structural schematic diagram of the data transmission device (referred to as the data transmission device 110) involved in the above embodiment. The data transmission device 110 includes a processing unit 1101 and The communication unit 1102 may further include a storage unit 1103. The structural schematic diagram shown in FIG. 11 can be used to illustrate the structure of the network device or terminal involved in the foregoing embodiment.

When the structural schematic diagram shown in FIG. 11 is used to illustrate the structure of the network device involved in the foregoing embodiment, the processing unit 1101 is used to control and manage the actions of the network device. For example, when the network device is the sending end, the processing unit 1101 is used to support the network device to execute steps 201, 202, and 204 in FIG. 2. When the network device is the receiving end, the processing unit 1101 is used to support the network device to perform steps 202 to 204 in FIG. 2. The processing unit 1101 is also used to support the network device to perform actions performed by the network device in other processes described in the embodiments of the present application. The processing unit 1101 may communicate with other network entities through the communication unit 1102, for example, communication with the terminal shown in FIG. Specifically, the processing unit 1101 may control the communication unit 1102 to perform sending and/or receiving actions. The storage unit 1103 is used to store program codes and data of network devices.

When the structural schematic diagram shown in FIG. 11 is used to illustrate the structure of the network device involved in the foregoing embodiment, the data transmission device 110 may be a network device or a chip in the network device.

When the structural schematic diagram shown in FIG. 11 is used to illustrate the structure of the terminal involved in the foregoing embodiment, the processing unit 1101 is used to control and manage the operation of the terminal. For example, when the terminal is the sending end, the processing unit 1101 is used to support the terminal to perform steps 201, 202, and 204 in FIG. 2. When the terminal is the receiving end, the processing unit 1101 is used to support the terminal to perform steps 202 to 204 in FIG. 2. The processing unit 1101 is also used to support the terminal to perform actions performed by the terminal in other processes described in the embodiments of the present application. The processing unit 1101 may communicate with other network entities through the communication unit 1102, for example, communication with the network device shown in FIG. Specifically, the processing unit 1101 may control the communication unit 1102 to perform sending and/or receiving actions. The storage unit 1103 is used to store program codes and data of the terminal.

When the structural schematic diagram shown in FIG. 11 is used to illustrate the structure of the terminal involved in the foregoing embodiment, the data transmission device 110 may be a terminal or a chip in the terminal.

When the data transmission device 110 is a terminal or a network device, the processing unit 1101 may be a processor or a controller, and the communication unit 1102 may be a communication interface, transceiver, transceiver, transceiver circuit, transceiver device, etc., wherein the communication interface It is a collective term and can include one or more interfaces. The storage unit 1103 may be a memory. When the data transmission device 110 is a chip in a terminal or a network device, the processing unit 1101 may be a processor or a controller, and the communication unit 1102 may be an input/output interface, pins, or circuits. The storage unit 1103 may be a storage unit within the chip (eg, registers, cache, etc.), or a storage unit (eg, read-only memory, random access memory, etc.) located outside the chip in the terminal or network device.

Among them, the communication unit may also be called a transceiver unit. The antenna and control circuit with the transceiver function in the data transmission device 110 can be regarded as the communication unit 1102 of the data transmission device 110, and the processor with the processing function can be regarded as the processing unit 1101 of the data transmission device 110. Optionally, the device used to implement the receiving function in the communication unit 1102 may be regarded as a receiving unit. The receiving unit is used to perform the receiving step in the embodiment of the present application. The receiving unit may be a receiver, a receiver, a receiving circuit, and the like. The device used to implement the transmission function in the communication unit 1102 may be regarded as a transmission unit. The transmission unit is used to perform the transmission steps in the embodiments of the present application. The transmission unit may be a transmitter, a transmitter, a transmission circuit, or the like.

If the integrated unit in FIG. 11 is implemented in the form of a software function module and sold or used as an independent product, it may be stored in a computer-readable storage medium. Based on such an understanding, the technical solutions of the embodiments of the present application may essentially be a part that contributes to the existing technology or all or part of the technical solutions may be embodied in the form of software products, and the computer software products are stored in a storage The medium includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods described in the embodiments of the present application. Storage media for storing computer software products include: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk, etc. Program code medium.

The unit in the embodiment of the present application may also be called a module, for example, the processing unit may also be called a processing module.

The embodiments of the present application also provide a schematic diagram of the hardware structure of a terminal (denoted as terminal 120) and a network device (denoted as network device 130). See Figure 12 for details.

The terminal 120 includes at least one processor 1201 and at least one transceiver 1203. Optionally, at least one memory 1202 is also included. Optionally, the terminal 120 further includes at least one antenna 1204. Optionally, the terminal 120 further includes an output device 1205 and/or an input device 1206.

The processor 1201 is used to control and manage the operation of the terminal. For example, when the terminal is the sending end, the processor 1201 is used to support the terminal to perform steps 201, 202, and 204 in FIG. 2. When the terminal is the receiving end, the processor 1201 is used to support the terminal to perform steps 202 to 204 in FIG. 2. The processor 1201 is also used to support the terminal to perform actions performed by the terminal in other processes described in the embodiments of the present application. The processor 1201 may communicate with other network entities through the transceiver 1203, for example, with the network device shown in FIG. 2. Specifically, the processor 1201 may control the transceiver 1203 to perform sending and/or receiving actions. The memory 1202 is used to store program codes and data of the terminal.

The processor 1201, the memory 1202, and the transceiver 1203 are connected through a bus. The processor 1201 may be a general-purpose central processing unit (central processing unit, CPU for short), a microprocessor, an application-specific integrated circuit (ASIC for short), or one or more programs used to control the application program Implementation of integrated circuits. The processor 1201 may also include multiple CPUs, and the processor 1201 may be a single-CPU processor or a multi-CPU processor. The processor here may refer to one or more devices, circuits, or processing cores for processing data (eg, computer program instructions).

The memory 1202 may be ROM or other types of static storage devices that can store static information and instructions, RAM, or other types of dynamic storage devices that can store information and instructions, or electrically erasable programmable read-only memory (electrically erasable programmable memory) read-only memory (EEPROM), compact disc-read memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disk, laser disk, optical disk, digital versatile disk, Blu-ray disk, etc.) , A disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store a desired program code in the form of instructions or data structures and can be accessed by a computer, which is not limited in this embodiment of the present application. The memory 1202 may exist independently, and is connected to the processor 1201 through a bus. The memory 1202 may also be integrated with the processor 1201. The memory 1202 may contain computer program code. The processor 1201 is configured to execute the computer program code stored in the memory 1202, so as to implement the method provided in the embodiments of the present application.

The transceiver 1203 may use any transceiver-like device for communicating with other devices or communication networks, such as Ethernet, RAN, WLAN, and so on.

The output device 1205 communicates with the processor 1201 and can display information in various ways. For example, the output device 1205 may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector (projector) etc. The input device 1206 communicates with the processor 1201 and can receive user input in various ways. For example, the input device 1206 may be a mouse, keyboard, touch screen device, or sensor device.

Optionally, the transceiver 1203 may include a transmitter 12031 and a receiver 12032. The device used to implement the receiving function in the transceiver 1203 may be regarded as a receiver 12032, and the receiver 12032 is used to perform the receiving step in the embodiment of the present application. The device in the transceiver 1203 for implementing the sending function may be regarded as the transmitter 12031, and the transmitter 12031 is used to perform the sending step in the embodiment of the present application.

The network device 130 includes at least one processor 1301 and at least one transceiver 1303. Optionally, at least one memory 1302 is also included. Optionally, the network device 130 further includes at least one antenna 1304.

The processor 1301 is used to control and manage the operation of the network device. For example, when the network device is the sending end, the processor 1301 is used to support the network device to perform steps 201, 202, and 204 in FIG. 2. When the network device is the receiving end, the processor 1301 is used to support the network device to perform steps 202 to 204 in FIG. 2. The processor 1301 is also used to support the network device to perform actions performed by the network device in other processes described in the embodiments of the present application. The processor 1301 may communicate with other network entities through the transceiver 1303, for example, with the terminal shown in FIG. 2. Specifically, the processor 1301 may control the transceiver 1303 to perform sending and/or receiving actions. The memory 1302 is used to store program codes and data of network devices.

The processor 1301, the memory 1302, and the transceiver 1303 are connected through a bus. For the relevant description of the processor 1301, the memory 1302, and the transceiver 1303, reference may be made to the description of the processor 1201, the memory 1202, and the transceiver 1203 in the terminal 120, and details are not described herein again.

Optionally, the transceiver 1303 may include a transmitter 13031 and a receiver 13032. The device used to implement the receiving function in the transceiver 1303 may be regarded as a receiver 13032, and the receiver 13032 is used to perform the receiving step in the embodiment of the present application. The device in the transceiver 1303 for implementing the sending function may be regarded as a transmitter 13031, and the transmitter 13031 is used to perform the sending step in the embodiment of the present application.

Optionally, the processor (for example, the processor 1301 or the processor 1201) may include a baseband processor and a central processor. The baseband processor is mainly used to process communication protocols and communication data, and the central processor is mainly used to process the entire The device controls, executes the software program, and processes the data of the software program. The processor integrates the functions of the baseband processor and the central processor. Those skilled in the art can understand that the baseband processor and the central processor can also be separate processors, which are interconnected through a bus and other technologies. The baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip. The central processor can also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.

An embodiment of the present application also provides a computer-readable storage medium, including instructions, which when executed on a computer, causes the computer to perform any of the above methods.

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

An embodiment of the present application also provides an apparatus, which exists in the form of a chip product. The apparatus includes a processor, a memory, and a transceiver component. The transceiver component includes an input and output circuit. The memory is used to store computer-executed instructions. The computer executes instructions stored in the memory to implement any of the above methods. In this case, the execution subject that executes the method provided by the embodiments of the present application may be a chip.

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

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

Although the application has been described in conjunction with various embodiments herein, in the process of implementing the claimed application, those skilled in the art can understand and realize the disclosure by viewing the drawings, the disclosure, and the appended claims Other changes to the embodiment. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill several functions recited in the claims. Certain measures are recited in mutually different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

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

Claims

A data transmission method, characterized in that it includes:

The sending end generates the first data corresponding to each time unit of the N time units, each of the first data is generated from the second data corresponding to the first data, and N is a positive integer; In this case, the N time units correspond to at least two first data, the at least two first data correspond to the same second data, and the at least two first data correspond to at least two different redundancy versions RV Or, in the case where N is greater than 1, all the first data corresponding to the N time units correspond to the same second data, and at least one of the N time units corresponds to at least two first data; Or, in the case where N is greater than 1, all the first data corresponding to the N time units correspond to at least two different second data, and the same second data corresponds to the first data on at least two different time units ;

The sending end sends corresponding first data to the receiving end on each of the N time units.
The method according to claim 1, wherein the first data is a data stream or a codeword.
The method according to claim 1 or 2, wherein N is greater than 1, for any one of the N time units corresponding to any one of at least two first data generated from the same second data, the time At least two first data generated from the same second data corresponding to the unit correspond to multiple different RVs.
The method according to any one of claims 1-3, wherein the sending end is a terminal, and the method further comprises:

The sending end receives first indication information from the receiving end, where the first indication information is used by the sending end to determine the corresponding of the first data sent on each time unit of the N time units RV index;

The sending end sends corresponding first data to the receiving end on each time unit of the N time units, including: the sending end based on the first indication information in the N time units Each time unit sends corresponding first data to the receiving end.
The method according to any one of claims 1-3, wherein the sending end is a network device, and the method further comprises:

The sending end sends first indication information to the receiving end, where the first indication information is used by the receiving end to determine the corresponding of the first data received on each of the N time units RV index.
The method according to claim 4 or 5, wherein the first indication information is used to indicate an index of any one of S RVs, and the indexes of the S RVs satisfy a preset order, the S RVs are RVs corresponding to all the first data sent by the sending end on the N time units, and S is an integer greater than N.
The method according to claim 4 or 5, wherein the first indication information is used to indicate an RV index, and the RV index corresponds to an RV sequence, and the RV sequence includes N time units for indicating Information about the index of the RV corresponding to the first data sent on each time unit in.
The method according to claim 4 or 5, wherein, when N=1, the N time units correspond to two first data, and the first indication information is used to indicate the two time units corresponding to the N time units. The index of the RV corresponding to the first data; wherein, the indexes of the RV corresponding to the two first data corresponding to the N time units are 0 and 2, respectively, or the two first corresponding to the N time units The indexes of the RV corresponding to the data are 2 and 3 respectively, or the indexes of the RV corresponding to the two first data corresponding to the N time units are 3 and 1, respectively, or the two corresponding to the N time units The indexes of the RV corresponding to the first data are 1 and 0, respectively.
The method according to any one of claims 1-8, wherein the method further comprises:

The sending end sends second indication information to the receiving end, where the second indication information is used to instruct to merge and decode multiple first data corresponding to the same second data received in the same time unit.
The method according to claim 9, wherein the sending end is a network device, the second indication information is indicated by a downlink aggregation factor field, and when the value of the downlink aggregation factor field is 1, the downlink The aggregation factor field is used to instruct to merge and decode multiple first data corresponding to the same second data received in the same time unit.
The method according to claim 9, wherein the sending end is a terminal, and the second indication information is indicated by an uplink shared channel indication field and a channel state information CSI request field. When the uplink shared channel indication field is When the value is 0, and the value of the CSI request field is 1, the uplink shared channel indication field and the CSI request field are used to indicate a plurality of corresponding second data received in the same time unit The first data is merged and decoded.
The method according to claim 9, wherein the second indication information is indicated by an index of a modulation and coding strategy MCS and an index of RV corresponding to a first data sent on a time unit, when the index of the MCS Is 25, and the index of the RV is 1, the index of the MCS and the index of the RV are used to instruct to merge multiple first data corresponding to the same second data received in the same time unit Decode.
The method according to any one of claims 1-7, wherein in the case where N is greater than 1, the method further comprises:

The sending end sends third indication information to the receiving end, where the third indication information is used to instruct to merge and decode all first data corresponding to the same second data received in M'time units, M'is an integer greater than 1.
The method according to claim 13, wherein the sending end is a network device, the third indication information is indicated by a downlink aggregation factor field, and when the value of the downlink aggregation factor field is M', the The downlink aggregation factor field is used to instruct to merge and decode all first data corresponding to the same second data received in M′ time units.
A data transmission method, characterized in that it includes:

The receiving end receives corresponding first data from the sending end on each of the N time units, each of the first data is generated from the second data corresponding to the first data, and N is a positive integer; wherein, When N is equal to 1, the N time units correspond to at least two first data, the at least two first data correspond to the same second data, and the at least two first data correspond to at least two different Redundancy version RV; or, in the case where N is greater than 1, all the first data corresponding to the N time units correspond to the same second data, and at least one of the N time units corresponds to at least two First data; or, in the case where N is greater than 1, all first data corresponding to the N time units correspond to at least two different second data, and the same second data corresponds to at least two different time units The first data on

The receiving end performs merge decoding on the target first data; the target first data is the first data generated from the same second data received on the same time unit in the N time units; Alternatively, the target first data is the first data generated from the same second data received on M time units, the M time units belong to the N time units, and M is greater than 1 but less than or equal to Integer of N.
The method according to claim 15, wherein the first data is a data stream or a codeword.
The method according to claim 15 or 16, wherein N is greater than 1, and for any one of the N time units corresponding to any one of at least two first data generated from the same second data, the time At least two first data generated from the same second data corresponding to the unit correspond to multiple different RVs.
The method according to any one of claims 15-17, wherein the receiving end is a network device, and the method further comprises:

The receiving end sends first indication information to the sending end, where the first indication information is used by the sending end to determine the corresponding to the first data sent on each of the N time units RV index.
The method according to any one of claims 15-17, wherein the receiving end is a terminal, and the method further comprises:

The receiving end receives first indication information from the sending end, and the first indication information is used by the receiving end to determine the corresponding to the first data received on each of the N time units RV index;

Combining and decoding the target first data by the receiving end includes: combining and decoding the target first data according to the first indication information by the receiving end.
The method according to claim 18 or 19, wherein the first indication information is used to indicate an index of any one of S RVs, and the indexes of the S RVs satisfy a preset order, the S RVs are RVs corresponding to all the first data sent by the sending end on the N time units, and S is an integer greater than N.
The method according to claim 18 or 19, wherein the first indication information is used to indicate an RV index, and the RV index corresponds to an RV sequence, and the RV sequence includes an indication for N time units Information about the index of the RV corresponding to the first data sent on each time unit in.
The method according to claim 18 or 19, wherein, when N=1, the N time units correspond to two first data, and the first indication information is used to indicate the two time units corresponding to the N time units. The index of the RV corresponding to the first data; wherein, the indexes of the RV corresponding to the two first data corresponding to the N time units are 0 and 2, respectively, or the two first corresponding to the N time units The indexes of the RV corresponding to the data are 2 and 3 respectively, or the indexes of the RV corresponding to the two first data corresponding to the N time units are 3 and 1, respectively, or the two corresponding to the N time units The indexes of the RV corresponding to the first data are 1 and 0, respectively.
The method according to any one of claims 15-22, wherein the method further comprises:

The receiving end receives second indication information from the sending end, where the second indication information is used to instruct to merge and decode multiple first data corresponding to the same second data received in the same time unit;

The receiving end performs merge decoding on the target first data, including: the receiving end performs merge decoding on the target first data according to the second indication information, the target first data is in the N The first data generated from the same second data received on the same time unit in each time unit.
The method according to claim 23, wherein the receiving end is a terminal, the second indication information is indicated by a downlink aggregation factor field, and when the value of the downlink aggregation factor field is 1, the downlink aggregation The factor field is used to instruct to merge and decode multiple first data corresponding to the same second data received in the same time unit.
The method according to claim 23, wherein the receiving end is a network device, and the second indication information is indicated by an uplink shared channel indication field and channel state information CSI request field, when the uplink shared channel indication field Is 0, and the value of the CSI request field is 1, the uplink shared channel indicator field and the CSI request field are used to indicate the number of corresponding second data received in the same time unit. The first data is merged and decoded.
The method according to claim 23, wherein the second indication information is indicated by an index of a modulation and coding strategy MCS and an index of RV corresponding to a first data sent on a time unit, when the index of the MCS Is 25, and the index of the RV is 1, the index of the MCS and the index of the RV are used to instruct to merge multiple first data corresponding to the same second data received in the same time unit Decode.
The method according to any one of claims 15-21, characterized in that, in the case where N is greater than 1, the method further comprises:

The receiving end receives third indication information from the sending end, where the third indication information is used to instruct to merge and decode all first data corresponding to the same second data received in M′ time units, M'is an integer greater than or equal to M;

The receiving end performs merge decoding on the target first data, including: the receiving end performs merge decoding on the target first data according to the third indication information, and the target first data is on M time units All the received first data generated from the same second data.
The method according to claim 27, wherein the receiving end is a terminal, the third indication information is indicated by a downlink aggregation factor field, and when the value of the downlink aggregation factor field is M', the downlink The aggregation factor field is used to indicate that all first data corresponding to the same second data received in M′ time units are combined and decoded.
A data transmission device, characterized by comprising: a processing unit and a communication unit;

The processing unit is configured to generate first data corresponding to each time unit of N time units, each of the first data is generated from second data corresponding to the first data, and N is a positive integer; wherein, When N is equal to 1, the N time units correspond to at least two first data, the at least two first data correspond to the same second data, and the at least two first data correspond to at least two different Redundancy version RV; or, in the case where N is greater than 1, all the first data corresponding to the N time units correspond to the same second data, and at least one of the N time units corresponds to at least two First data; or, in the case where N is greater than 1, all first data corresponding to the N time units correspond to at least two different second data, and the same second data corresponds to at least two different time units The first data on

The communication unit is configured to send corresponding first data to the receiving end on each of the N time units.
The apparatus according to claim 29, wherein the first data is a data stream or a codeword.
The apparatus according to claim 29 or 30, wherein N is greater than 1, and for any one of the N time units corresponding to at least two first data generated from the same second data, the time At least two first data generated from the same second data corresponding to the unit correspond to multiple different RVs.
The device according to any one of claims 29 to 31, wherein the data transmission device is a terminal,

The communication unit is further configured to receive first indication information from the receiving end, and the first indication information is used by the device to determine the first data sent on each of the N time units The index of the corresponding RV;

The communication unit is further configured to send corresponding first data to the receiving end on each of the N time units based on the first indication information.
The device according to any one of claims 29 to 31, wherein the data transmission device is a network device;

The communication unit is further configured to send first indication information to the receiving end, where the first indication information is used by the receiving end to determine the first received on each of the N time units The index of the RV corresponding to the data.
The apparatus according to claim 32 or 33, wherein the first indication information is used to indicate an index of any one of S RVs, and the indexes of the S RVs satisfy a preset order, the S RVs are RVs corresponding to all the first data sent by the data transmission device on the N time units, and S is an integer greater than N.
The apparatus according to claim 32 or 33, wherein the first indication information is used to indicate an RV index, and the RV index corresponds to an RV sequence, and the RV sequence includes N time units for indicating Information about the index of the RV corresponding to the first data sent on each time unit in.
The apparatus according to claim 32 or 33, wherein, N=1, the N time units correspond to two first data, and the first indication information is used to indicate the two time units corresponding to the N time units The index of the RV corresponding to the first data; wherein, the indexes of the RV corresponding to the two first data corresponding to the N time units are 0 and 2, respectively, or the two first corresponding to the N time units The indexes of the RV corresponding to the data are 2 and 3 respectively, or the indexes of the RV corresponding to the two first data corresponding to the N time units are 3 and 1, respectively, or the two corresponding to the N time units The indexes of the RV corresponding to the first data are 1 and 0, respectively.
The device according to any one of claims 29-36, characterized in that

The communication unit is further configured to send second indication information to the receiving end, where the second indication information is used to instruct to perform a plurality of first data corresponding to the same second data received in the same time unit Combine decoding.
The apparatus according to claim 37, wherein the data transmission apparatus is a network device, and the second indication information is indicated by a downlink aggregation factor field. When the value of the downlink aggregation factor field is 1, the The downlink aggregation factor field is used to instruct to merge and decode multiple first data corresponding to the same second data received in the same time unit.
The apparatus according to claim 37, wherein the data transmission device is a terminal, and the second indication information is indicated by an uplink shared channel indication field and a channel state information CSI request field, when the uplink shared channel indication field Is 0, and the value of the CSI request field is 1, the uplink shared channel indicator field and the CSI request field are used to indicate the number of corresponding second data received in the same time unit. The first data is merged and decoded.
The apparatus according to claim 37, wherein the second indication information is indicated by an index of a modulation and coding strategy MCS and an index of RV corresponding to a first data sent in a time unit, when the index of the MCS Is 25, and the index of the RV is 1, the index of the MCS and the index of the RV are used to instruct to merge multiple first data corresponding to the same second data received in the same time unit Decode.
The device according to any one of claims 29 to 35, characterized in that, when N is greater than 1,

The communication unit is further configured to send third indication information to the receiving end, where the third indication information is used to instruct all first data corresponding to the same second data received in M'time units Combined decoding, M'is an integer greater than 1.
The apparatus according to claim 41, wherein the data transmission apparatus is a network device, and the third indication information is indicated by a downlink aggregation factor field. When the value of the downlink aggregation factor field is M', the The downlink aggregation factor field is used to indicate that all first data corresponding to the same second data received in M′ time units are combined and decoded.
A data transmission device, characterized by comprising: a processing unit and a communication unit;

The communication unit is configured to receive corresponding first data from the sending end on each time unit of N time units, each of the first data is generated from the second data corresponding to the first data, and N is A positive integer; where N is equal to 1, the N time units correspond to at least two first data, the at least two first data correspond to the same second data, the at least two first data Corresponding to at least two different redundancy versions RV; or, in the case where N is greater than 1, all the first data corresponding to the N time units correspond to the same second data, and at least one of the N time units The time unit corresponds to at least two first data; or, in the case where N is greater than 1, all first data corresponding to the N time units correspond to at least two different second data, and the same second data corresponds to at least The first data on two different time units;

The processing unit is configured to merge and decode the target first data; the target first data is the first data generated from the same second data received on the same time unit of the N time units A data; or, the target first data is the first data generated from the same second data received on M time units, the M time units belong to the N time units, and M is greater than 1 is an integer less than or equal to N.
The apparatus according to claim 43, wherein the first data is a data stream or a codeword.
The apparatus according to claim 43 or 44, wherein N is greater than 1, and for any one of the N time units corresponding to at least two first data generated from the same second data, the time At least two first data generated from the same second data corresponding to the unit correspond to multiple different RVs.
The device according to any one of claims 43 to 45, wherein the data transmission device is a network device,

The communication unit is further configured to send first indication information to the sending end, where the first indication information is used by the sending end to determine the first sent on each of the N time units The index of the RV corresponding to the data.
The device according to any one of claims 43-45, wherein the data transmission device is a terminal;

The communication unit is further configured to receive first indication information from the sending end, and the first indication information is used by the data transmission device to determine the first received in each of the N time units. The index of the RV corresponding to a data;

The processing unit is specifically configured to merge and decode target first data according to the first instruction information.
The apparatus according to claim 46 or 47, wherein the first indication information is used to indicate an index of any one of S RVs, and the indexes of the S RVs satisfy a preset order, the S RVs are RVs corresponding to all the first data sent by the sending end on the N time units, and S is an integer greater than N.
The apparatus according to claim 46 or 47, wherein the first indication information is used to indicate an RV index, and the RV index corresponds to an RV sequence, and the RV sequence includes N time units for indicating Information about the index of the RV corresponding to the first data sent on each time unit in.
The apparatus according to claim 46 or 47, wherein, N=1, the N time units correspond to two first data, and the first indication information is used to indicate the two time units corresponding to the N time units The index of the RV corresponding to the first data; wherein, the indexes of the RV corresponding to the two first data corresponding to the N time units are 0 and 2, respectively, or the two first corresponding to the N time units The indexes of the RV corresponding to the data are 2 and 3 respectively, or the indexes of the RV corresponding to the two first data corresponding to the N time units are 3 and 1, respectively, or the two corresponding to the N time units The indexes of the RV corresponding to the first data are 1 and 0, respectively.
The device according to any one of claims 43-50, characterized in that

The communication unit is further configured to receive second indication information from the sending end, and the second indication information is used to instruct to perform a plurality of first data corresponding to the same second data received in the same time unit Merge decoding

The processing unit is specifically configured to merge and decode the target first data according to the second indication information, the target first data is received on the same time unit among the N time units The first data generated from the same second data.
The device according to claim 51, wherein the data transmission device is a terminal, and the second indication information is indicated by a downlink aggregation factor field. When the value of the downlink aggregation factor field is 1, the downlink The aggregation factor field is used to instruct to merge and decode multiple first data corresponding to the same second data received in the same time unit.
The apparatus according to claim 51, wherein the data transmission apparatus is a network device, and the second indication information is indicated by an uplink shared channel indication field and channel state information CSI request field, when the uplink shared channel indicates When the value of the field is 0, and the value of the CSI request field is 1, the uplink shared channel indication field and the CSI request field are used to indicate that the corresponding second data received in the same time unit corresponds to the same second data. Multiple first data are combined and decoded.
The apparatus according to claim 51, wherein the second indication information is indicated by an index of a modulation and coding strategy MCS and an index of RV corresponding to a first data sent in a time unit, when the index of the MCS Is 25, and the index of the RV is 1, the index of the MCS and the index of the RV are used to instruct to merge multiple first data corresponding to the same second data received in the same time unit Decode.
The device according to any one of claims 43 to 49, wherein, in the case where N is greater than 1,

The communication unit is further configured to receive third indication information from the sending end, and the third indication information is used to instruct all first data corresponding to the same second data received in M′ time units Combined decoding, M'is an integer greater than or equal to M;

The processing unit is specifically configured to merge and decode the target first data according to the third instruction information, and the target first data is all generated from the same second data received on M time units The first data.
The device according to claim 55, wherein the data transmission device is a terminal, and the third indication information is indicated by a downlink aggregation factor field. When the value of the downlink aggregation factor field is M', the The downlink aggregation factor field is used to instruct to merge and decode all first data corresponding to the same second data received in M′ time units.
A data transmission device is characterized by comprising: a memory and a processor;

The memory is used to store computer-executed instructions, and the processor executes the computer-executed instructions stored in the memory, so that the data transmission device implements the method according to any one of claims 1-14; Alternatively, the method according to any one of claims 15-28 is implemented.
A data transmission device, characterized by comprising: a processor and a communication interface;

The communication interface is used for inputting and/or outputting signals, and the processor is used for causing the data transmission device to implement the method according to any one of claims 1-14; or, implementing the method as claimed in claims 15-28 The method of any one of.
A computer-readable storage medium, comprising instructions, which when executed on a computer, causes the computer to perform the method according to any one of claims 1-14; or, executes the method as claimed in claim 15- The method according to any one of 28.
A computer program product, including a computer program, characterized in that, when the computer program runs on a computer, the computer is caused to perform the method according to any one of claims 1 to 14; or, The method of any one of claims 15-28.