CN111431675A

CN111431675A - Data transmission method and device

Info

Publication number: CN111431675A
Application number: CN201911194461.6A
Authority: CN
Inventors: 纪刘榴; 葛士斌; 杭海存; 王潇涵; 毕晓艳
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-01-10
Filing date: 2019-11-28
Publication date: 2020-07-17
Anticipated expiration: 2039-11-28
Also published as: CN111431675B

Abstract

The application provides a data transmission method and device, and relates to the technical field of communication. The method comprises the following steps: the sending end generates first data corresponding to each time unit in the N time units, and sends the corresponding first data to the receiving end on each time unit in the N time units. Under the condition that N is equal to 1, the N time units correspond to at least two first data generated by the same second data, and the at least two first data correspond to at least two different RVs; or, under the condition that N is greater than 1, all the first data corresponding to N time units are generated by the same second data, and at least one time unit in the N time units corresponds to at least two first data; or, when N is greater than 1, all the first data corresponding to N time units are generated by at least two different second data, and the same second data generates the first data on at least two different time units. The method can improve the data transmission efficiency.

Description

Data transmission method and device

The present application claims priority from the chinese patent application filed on 10.01.2019 under the name "data transmission method and apparatus", with the application number 201910024364.6, by the national intellectual property office, the entire contents of which are incorporated herein by reference.

Technical Field

The present application relates to the field of communications technologies, and in particular, to a data transmission method and apparatus.

Background

In the 5G communication system, a transmitting end may repeatedly transmit the same data in a time domain, so as to improve the reliability of data transmission by using a time domain diversity gain caused by a change of a channel in the time domain.

Disclosure of Invention

The embodiment of the application provides a data transmission method and device, which are used for improving the data transmission efficiency on the premise of ensuring the reliability of data transmission, so that a communication system meets the requirements of high reliability and high time delay.

In order 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, including: the sending end generates first data corresponding to each time unit in N time units, and sends the corresponding first data to the receiving end in each time unit in the N time units, wherein each first data is generated by second data corresponding to the first data, and N is a positive integer.

Under the condition that 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, under the condition that N is greater than 1, all the first data corresponding to N time units correspond to the same second data, and at least one time unit in the N time units corresponds to at least two first data; or, when N is greater than 1, all the first data corresponding to 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.

In the method provided by the first aspect, the sending end sends, at least in one time unit of the multiple time units, multiple pieces of first data generated from the same second data, or repeatedly transmits, in the multiple time units, the multiple pieces of second data (that is, repeatedly transmits, in the multiple time units, multiple pieces of data, for example, multiple TBs), and compared with sending, in the multiple time units, multiple different RVs of the same TB (that is, repeatedly transmits, in the multiple time units, the same data, that is, the same TB), reliability of data transmission is ensured, and at the same time, data transmission delay can be reduced, and data transmission efficiency is improved.

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 one time unit of the N time units corresponding to at least two first data generated from the same second data, the at least two first data generated from the same second data corresponding to the time unit correspond to multiple different RVs. By the possible implementation manner, the device for receiving the plurality of first data generated by the same second data can obtain the SINR gain, and the data transmission efficiency is improved.

With reference to the first aspect, in a possible implementation manner, when any one time unit of the N time units corresponds to at least two first data generated from the same second data, RV corresponding to any two first data of the at least two first data generated from the same second data corresponding to the time unit is different. By the possible implementation mode, a device receiving a plurality of first data generated by the same second data can obtain a larger SNR gain, and the data transmission efficiency is improved.

With reference to the first aspect, in a possible implementation manner, a sending end is a terminal, and the method further includes: the method comprises the steps that a sending end receives first indication information from a receiving end, wherein the first indication information is used for the sending end to determine an index of an RV corresponding to first data sent in each time unit of N time units; the method for transmitting the corresponding first data to the receiving end by the transmitting end in each time unit in the N time units comprises the following steps: the sending end sends corresponding first data to the receiving end on each time unit in the N time units based on the first indication information. The possible implementation manner can 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, and the method further includes: the sending end sends first indication information to the receiving end, wherein the first indication information is used for the receiving end to determine the index of the RV corresponding to the first data received in each time unit of the N time units. By the possible implementation manner, the receiving end can determine the RV corresponding to the first data sent by the sending end, so that the receiving end can perform merging and decoding of the first data.

With reference to the first aspect, in a possible implementation manner, the first indication information is used to indicate an index of any one of S RVs, the indexes of the S RVs satisfy a preset order, the S RVs are RVs corresponding to all first data sent by the sending end in N time units, and S is an integer greater than N. According to the possible implementation manner, the terminal can obtain the indexes of the RVs corresponding to the S first data according to the preset circulation sequence met by the first indication information and the indexes of the S RVs, and the network equipment can not indicate the index of each RV, so that transmission resources are saved.

With reference to the first aspect, in a possible implementation manner, the first indication information is used to indicate an index of one RV, the index of the RV corresponds to one RV sequence, and the RV sequence includes information used to indicate an index of an RV corresponding to first data sent in each of N time units. According to the possible implementation manner, the terminal can obtain the index of the RV corresponding to each first data according to the first indication information and the corresponding relation between the index of the RV and the RV sequence, and the network equipment can not indicate the index of each RV, so that transmission resources are saved.

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

With reference to the first aspect, in a possible implementation manner, the method further includes: and the sending end sends second indication information to the receiving end, wherein the second indication information is used for indicating that a plurality of first data corresponding to the same second data received in the same time unit are subjected to merging decoding.

With reference to the first aspect, in a possible implementation manner, the sending end is a network device, the second indication information is indicated by a downlink aggregation factor field, and when a value of the downlink aggregation factor field is 1, the downlink aggregation factor field is used to indicate that multiple pieces of first data corresponding to the same second data received in the same time unit are to be subjected to merging decoding.

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, and when a value of the uplink shared channel indication field is 0 and a value of the CSI request field is 1, the uplink shared channel indication field and the CSI request field are used to indicate that multiple pieces of first data corresponding to the same piece of second data received in the same time unit are subjected to merging decoding.

With reference to the first aspect, in a possible implementation manner, the second indication information indicates, through an index of an MCS and an index of an RV, where the index of the MCS and the index of the RV are corresponding to one first data sent in one time unit, and 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 that multiple first data corresponding to the same second data received in the same time unit are subjected to merging decoding.

With reference to the first aspect, in a possible implementation manner, in a case that N is greater than 1, the method further includes: and the sending end sends third indication information to the receiving end, wherein the third indication information is used for indicating that all the first data corresponding to the same second data received in M 'time units are subjected to merging decoding, and M' is an integer larger than 1.

With reference to the first aspect, in a possible implementation manner, the sending end is a network device, the third indication information indicates through a downlink aggregation factor field, and when a 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 subjected to merging decoding.

In a second aspect, a data transmission method is provided, including: a receiving end receives corresponding first data from a sending end on each time unit in N time units, and carries out merging decoding on target first data, wherein each first data is generated by second data corresponding to the first data, and N is a positive integer; the target first data is first data which is received in the same time unit of the N time units and is generated by the same second data; or the target first data is first data generated by the same second data and received in M time units, where the 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 method provided in the second aspect, the sending end sends, at least in one time unit of the multiple time units, multiple pieces of first data generated from the same second data, or repeatedly transmits, in the multiple time units, the multiple pieces of second data (i.e., repeatedly transmits, in the multiple time units, multiple pieces of data, e.g., multiple TBs), and compared with sending, in the multiple time units, multiple different RVs of the same TB (i.e., repeatedly transmits, in the multiple time units, the same data, i.e., the same TB), the reliability of data transmission is ensured, and at the same time, the data transmission delay can be reduced, and the data transmission efficiency is improved.

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 one time unit of the N time units corresponding to the at least two first data generated from the same second data, the at least two first data generated from the same second data corresponding to the time unit correspond to multiple different RVs. By the possible implementation manner, the device for receiving the plurality of first data generated by the same second data can obtain the SINR gain, and the data transmission efficiency is improved.

With reference to the second aspect, in a possible implementation manner, when any one time unit of the N time units corresponds to at least two first data generated from the same second data, RV corresponding to any two first data of the at least two first data generated from the same second data corresponding to the time unit is different. By the possible implementation mode, a device receiving a plurality of first data generated by the same second data can obtain a larger SNR gain, and the data transmission efficiency is improved.

With reference to the second aspect, in a possible implementation manner, the receiving end is a network device, and the method further includes: the receiving end sends first indication information to the sending end, wherein the first indication information is used for the sending end to determine the index of the RV corresponding to the first data sent in each time unit of the N time units. The possible implementation manner can 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, and the method further includes: the receiving end receives first indication information from the sending end, wherein the first indication information is used for the receiving end to determine the index of the RV corresponding to the first data received in each time unit of the N time units; the receiving end carries out merging decoding on the target first data, and the merging decoding comprises the following steps: and the receiving terminal carries out merging decoding on the target first data according to the first indication information. By the possible implementation manner, the receiving end can determine the RV corresponding to the first data sent by the sending end, so that the receiving end can perform merging and decoding of the first data.

With reference to the second aspect, in a possible implementation manner, the first indication information is used to indicate an index of any one of S RVs, the indexes of the S RVs satisfy a preset order, the S RVs are RVs corresponding to all first data sent by the sending end in N time units, and S is an integer greater than N. According to the possible implementation manner, the terminal can obtain the indexes of the RVs corresponding to the S first data according to the preset circulation sequence met by the first indication information and the indexes of the S RVs, and the network equipment can not indicate the index of each RV, so that transmission resources are saved.

With reference to the second aspect, in a possible implementation manner, the first indication information is used to indicate an index of one RV, the index of the RV corresponds to one RV sequence, and the RV sequence includes information used to indicate an index of an RV corresponding to first data sent in each of N time units. According to the possible implementation manner, the terminal can obtain the index of the RV corresponding to each first data according to the first indication information and the corresponding relation between the index of the RV and the RV sequence, and the network equipment can not indicate the index of each RV, so that transmission resources are saved.

With reference to the second aspect, in a possible implementation manner, N is 1, the N time units correspond to two pieces of first data, and the first indication information is used to indicate an index of an RV corresponding to the two pieces of first data corresponding to the N time units; the indexes of RVs corresponding to the two first data corresponding to the N time units are 0 and 2, respectively, or the indexes of RVs corresponding to the two first data corresponding to the N time units are 2 and 3, respectively, or the indexes of RVs corresponding to the two first data corresponding to the N time units are 3 and 1, respectively, or the indexes of RVs corresponding to the two first data corresponding to the N time units 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, wherein the second indication information is used for indicating that a plurality of first data corresponding to the same second data received in the same time unit are merged and decoded; the receiving end carries out merging decoding on the target first data, and the merging decoding comprises the following steps: and the receiving end carries out merging and decoding on the target first data according to the second indication information, wherein the target first data is the first data which is received in the same time unit of the N time units and is generated by the same second data.

With reference to the second aspect, in a possible implementation manner, 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 factor field is used to indicate that multiple pieces of first data corresponding to the same piece of second data received in the same time unit are subjected to merging decoding.

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, and when a value of the uplink shared channel indication field is 0 and a value of the CSI request field is 1, the uplink shared channel indication field and the CSI request field are used to indicate that multiple pieces of first data corresponding to the same piece of second data received in the same time unit are subjected to merging decoding.

With reference to the second aspect, in a possible implementation manner, the second indication information indicates, through an index of an MCS and an index of an RV, where the index of the MCS and the index of the RV correspond to one first data sent in one time unit, and 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 that multiple first data corresponding to the same second data received in the same time unit are subjected to merging decoding.

With reference to the second aspect, in a possible implementation manner, in a case that N is greater than 1, the method further includes: the receiving end receives third indication information from the sending end, the third indication information is used for indicating that all first data corresponding to the same second data received in M 'time units are subjected to merging decoding, and M' is an integer greater than or equal to M; the receiving end carries out merging decoding on the target first data, and the merging decoding comprises the following steps: and the receiving terminal performs merging decoding on the target first data according to the third indication information, wherein the target first data are all first data which are received on the M time units and are generated by the same second data.

With reference to the second aspect, in a possible implementation manner, the receiving end is a terminal, the third indication information indicates through the 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 the first data corresponding to the same second data received in M' time units are subjected to merging decoding.

In a third aspect, a data transmission apparatus is provided, including: a processing unit and a communication unit; the processing unit is used for generating first data corresponding to each time unit in N time units, each first data is generated by second data corresponding to the first data, and N is a positive integer; 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, when 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 time unit in the N time units corresponds to at least two first data; or, when 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 communication unit is configured to send corresponding first data to a receiving end in each of the N time units.

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 of the N time units corresponding to at least two first data generated by the same second data, the at least two first data generated by the same second data corresponding to the time unit correspond to multiple different RVs.

With reference to the third aspect, in a possible implementation manner, the data transmission apparatus is a terminal; the communication unit is further configured to receive, from the receiving end, first indication information, where the first indication information is used by the data transmission apparatus to determine an index of an RV corresponding to first data sent in each of the N time units; the processing unit is further configured to send, by using the communication unit, corresponding first data to a receiving end in each of the N time units based on the first indication information.

With reference to the third aspect, in a possible implementation manner, the data transmission apparatus 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 for the receiving end to determine an index of an RV corresponding to first data received in each time unit 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 RV of S RVs, where the indexes of the S RVs satisfy a preset order, the S RVs are RVs corresponding to all first data sent by the data transmission apparatus over 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 index of one RV, the index of the RV corresponds to one RV sequence, and the RV sequence includes information used to indicate an index of an RV corresponding to first data sent in each of N time units.

With reference to the third aspect, in a possible implementation manner, N is 1, the N time units correspond to two pieces of first data, and the first indication information is used to indicate an index of an RV corresponding to the two pieces of first data corresponding to the N time units; the indexes of RVs corresponding to the two first data corresponding to the N time units are 0 and 2, respectively, or the indexes of RVs corresponding to the two first data corresponding to the N time units are 2 and 3, respectively, or the indexes of RVs corresponding to the two first data corresponding to the N time units are 3 and 1, respectively, or the indexes of RVs corresponding to the two first data corresponding to the N time units 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 multiple pieces of first data corresponding to the same second data received in the same time unit are subjected to merging decoding.

With reference to the third aspect, in a possible implementation manner, the data transmission device is a network device, the second indication information is indicated by a downlink aggregation factor field, and when a value of the downlink aggregation factor field is 1, the downlink aggregation factor field is used to indicate that multiple pieces of first data corresponding to the same second data received in the same time unit are to be merged and decoded.

With reference to the third aspect, in a possible implementation manner, the data transmission device is a terminal, the second indication information is indicated by an uplink shared channel indication field and a CSI request field, and when a value of the uplink shared channel indication field is 0 and a value of the CSI request field is 1, the uplink shared channel indication field and the CSI request field are used to indicate that multiple pieces of first data corresponding to the same piece of second data received in the same time unit are subjected to merging decoding.

With reference to the third aspect, in a possible implementation manner, the second indication information indicates, through an index of an MCS and an index of an RV, where the index of the MCS and the index of the RV are corresponding to one first data sent in one time unit, and 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 that multiple first data corresponding to the same second data received in the same time unit are subjected to merging decoding.

With reference to the third aspect, in one possible implementation manner, in the case that 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 that all first data corresponding to the same second data received in M 'time units are merged and decoded, and M' is an integer greater than 1.

With reference to the third aspect, in a possible implementation manner, the data transmission device is a network device, the third indication information indicates through a downlink aggregation factor field, and when a 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 subjected to merging decoding.

In a fourth aspect, a data transmission apparatus is provided, including: a processing unit and a communication unit; the communication unit is configured to receive corresponding first data from a sending end in each of N time units, where each first data is generated from second data corresponding to the first data, and N is a positive integer; 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, when 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 time unit in the N time units corresponds to at least two first data; or, when 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 for carrying out merging decoding on the target first data; the target first data is first data which is received in the same time unit of the N time units and is generated by the same second data; or the target first data is first data generated by the same second data and received in M time units, where 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, and for any time unit of the N time units corresponding to at least two first data generated from the same second data, the at least two first data generated from the same second data corresponding to the time unit correspond to multiple different RVs.

With reference to the fourth aspect, in a possible implementation manner, the data transmission apparatus 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 an index of an RV corresponding to first data sent in each time unit of the N time units.

With reference to the fourth aspect, in a possible implementation manner, the data transmission apparatus is a terminal; the communication unit is further configured to receive first indication information from the sending end, where the first indication information is used by the data transmission apparatus to determine an index of an RV corresponding to first data received in each of the N time units; the processing unit is specifically configured to perform merging decoding on the target first data according to the first indication information.

With reference to the fourth aspect, in a possible implementation manner, the first indication information is used to indicate an index of any one RV of S RVs, where the indexes of the S RVs satisfy a preset order, the S RVs are RVs corresponding to all 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 index of one RV, the index of the RV corresponds to one RV sequence, and the RV sequence includes information used to indicate an index of an RV corresponding to first data sent in each of N time units.

With reference to the fourth aspect, in a possible implementation manner, N is 1, the N time units correspond to two pieces of first data, and the first indication information is used to indicate an index of an RV corresponding to the two pieces of first data corresponding to the N time units; the indexes of RVs corresponding to the two first data corresponding to the N time units are 0 and 2, respectively, or the indexes of RVs corresponding to the two first data corresponding to the N time units are 2 and 3, respectively, or the indexes of RVs corresponding to the two first data corresponding to the N time units are 3 and 1, respectively, or the indexes of RVs corresponding to the two first data corresponding to the N time units 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, where the second indication information is used to indicate that multiple pieces of first data corresponding to the same second data received in the same time unit are subjected to merging decoding; the processing unit is specifically configured to perform merging and decoding on the target first data according to the second indication information, where the target first data is first data generated by the same second data and received in the same time unit of 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 downlink aggregation factor field is used to indicate that multiple pieces of first data corresponding to the same piece of second data received in the same time unit are to be merged and decoded.

With reference to the fourth aspect, in a possible implementation manner, the data transmission device is a network device, the second indication information is indicated by an uplink shared channel indication field and a CSI request field, and when a value of the uplink shared channel indication field is 0 and a value of the CSI request field is 1, the uplink shared channel indication field and the CSI request field are used to indicate that multiple pieces of first data corresponding to the same piece of second data received in the same time unit are subjected to merging decoding.

With reference to the fourth aspect, in a possible implementation manner, the second indication information indicates, through an index of an MCS and an index of an RV, where the index of the MCS and the index of the RV correspond to one first data sent in one time unit, and 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 that multiple first data corresponding to the same second data received in the same time unit are subjected to merging decoding.

With reference to the fourth aspect, in one possible implementation manner, in the case that N is greater than 1; the communication unit is further configured to receive third indication information from the sending end, where the third indication information is used to indicate that all first data corresponding to the same second data received in M 'time units are merged and decoded, and M' is an integer greater than or equal to M; the processing unit is specifically configured to perform merging and decoding on target first data according to the third indication information, where the target first data is all first data generated by the same second data and received in M time units.

With reference to the fourth aspect, in a possible implementation manner, the data transmission device is a terminal, the third indication information indicates through 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 subjected to merging decoding.

In a fifth aspect, a data transmission method is provided, including: the method comprises the steps that a network device sends first indication information to a terminal, wherein the first indication information is used for the terminal to determine an index of an RV corresponding to first data sent by the network device in each time unit of N time units, each first data is generated by second data corresponding to the first data, and N is a positive integer; the network device transmits corresponding first data on each of the N time units based on the first indication information.

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, when 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 time unit in the N time units corresponds to at least two first data; or, when 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.

With reference to the fifth aspect, in a possible implementation manner, the first indication information is used to indicate an index of any one RV of S RVs, where the indexes of the S RVs satisfy a preset order, the S RVs are RVs corresponding to all first data sent by the network device over 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 one RV, the index of the RV corresponds to one RV sequence, and the RV sequence includes information used to indicate an index of an RV corresponding to first data sent in each of N time units.

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

With reference to the fifth aspect, in a possible implementation manner, the method further includes: and the network equipment sends second indication information to the terminal, wherein the second indication information is used for indicating that a plurality of first data corresponding to the same second data received in the same time unit are merged and decoded.

With reference to the fifth aspect, in a possible implementation manner, in a case that N is greater than 1, the method further includes: and the network equipment sends third indication information to the terminal, wherein the third indication information is used for indicating that all first data corresponding to the same second data received in M 'time units are subjected to merging decoding, and M' is an integer greater than 1.

In a sixth aspect, a data transmission method is provided, including: a terminal receives first indication information from a network device, wherein the first indication information is used for the terminal to determine an index of an RV corresponding to first data sent by the network device in each time unit of N time units, each first data is generated by second data corresponding to the first data, and N is a positive integer; 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, when 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 time unit in the N time units corresponds to at least two first data; or, when 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 terminal carries out merging decoding on the target first data according to the first indication information; the target first data is first data which is received in the same time unit of the N time units and is generated by the same second data; or the target first data is first data generated by the same second data and received in M time units, where 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 sixth aspect, in a possible implementation manner, the first indication information is used to indicate an index of any one RV of S RVs, where the indexes of the S RVs satisfy a preset order, the S RVs are RVs corresponding to all first data sent by the network device over 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 index of one RV, the index of the RV corresponds to one RV sequence, and the RV sequence includes information used to indicate an index of an RV corresponding to first data sent in each of N time units.

With reference to the sixth aspect, in a possible implementation manner, N is 1, the N time units correspond to two pieces of first data, and the first indication information is used to indicate an index of an RV corresponding to the two pieces of first data corresponding to the N time units; the indexes of RVs corresponding to the two first data corresponding to the N time units are 0 and 2, respectively, or the indexes of RVs corresponding to the two first data corresponding to the N time units are 2 and 3, respectively, or the indexes of RVs corresponding to the two first data corresponding to the N time units are 3 and 1, respectively, or the indexes of RVs corresponding to the two first data corresponding to the N time units 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 equipment, wherein the second indication information is used for indicating that a plurality of first data corresponding to the same second data received in the same time unit are merged and decoded; the terminal carries out merging decoding on the target first data according to the first indication information, and the merging decoding comprises the following steps: and the terminal performs merging decoding on the target first data according to the first indication information and the second indication information, wherein the target first data is first data which is received in the same time unit of the N time units and is generated by the same second data.

With reference to the sixth aspect, in a possible implementation manner, in a case that N is greater than 1, the method further includes: the terminal receives third indication information from the network equipment, wherein the third indication information is used for indicating that all first data corresponding to the same second data received in M 'time units are subjected to merging decoding, and M' is an integer greater than or equal to M; the terminal carries out merging decoding on the target first data according to the first indication information, and the merging decoding comprises the following steps: and the terminal performs merging decoding on target first data according to the first indication information and the third indication information, wherein the target first data are all first data which are received in M time units and generated by 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 aggregation factor field is used to indicate that multiple pieces of first data corresponding to the same piece of second data received in the same time unit are subjected to merging decoding.

With reference to the method provided in the fifth aspect or the sixth aspect, in a possible implementation manner, the second indication information indicates, through an index of an MCS and an index of an RV, where the index of the MCS and the index of the RV correspond to one first data sent in one time unit, and 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 that multiple first data corresponding to the same second data received in the same time unit are subjected to merging decoding.

With reference to the method provided in the fifth aspect or the sixth aspect, in a possible implementation manner, the third indication information indicates through a downlink aggregation factor field, and when a 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 subjected to merging decoding.

A seventh aspect provides a data transmission method, including: the method comprises the steps that network equipment sends first indication information to a terminal, wherein the first indication information is used for the terminal to determine an index of RV corresponding to first data sent by the terminal in each time unit of N time units, each first data is generated by second data corresponding to the first data, and N is a positive integer; 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, when 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 time unit in the N time units corresponds to at least two first data; or, when 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 network equipment carries out merging decoding on target first data based on the first indication information; the target first data is first data which is received in the same time unit of the N time units and is generated by the same second data; or the target first data is first data generated by the same second data and received in M time units, where 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 seventh aspect, in a possible implementation manner, the first indication information is used to indicate an index of any one of S RVs, where the indexes of the S RVs satisfy a preset order, the S RVs are RVs corresponding to all first data sent by the terminal over 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 index of one RV, the index of the RV corresponds to one RV sequence, and the RV sequence includes information used to indicate an index of an RV corresponding to first data sent in each time unit of N time units.

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

With reference to the seventh aspect, in a possible implementation manner, the method further includes: the network equipment receives second indication information from the terminal, wherein the second indication information is used for indicating that a plurality of first data corresponding to the same second data received in the same time unit are merged and decoded; the network device performs merging decoding on the target first data based on the first indication information, and includes: and the network equipment merges and decodes the target first data according to the first indication information and the second indication information, wherein the target first data is first data which is received in the same time unit of the N time units and is generated by the same second data.

With reference to the seventh aspect, in a possible implementation manner, in case that N is greater than 1, the method further includes: the network equipment receives third indication information from the terminal, wherein the third indication information is used for indicating that all first data corresponding to the same second data received in M 'time units are subjected to merging decoding, and M' is an integer greater than or equal to M; the network device performs merging decoding on the target first data based on the first indication information, and includes: and the network equipment performs merging decoding on target first data according to the first indication information and the third indication information, wherein the target first data are all first data which are received in M time units and generated by the same second data.

In an eighth aspect, a data transmission method is provided, including: a terminal receives first indication information from network equipment, wherein the first indication information is used for the terminal to determine an index of an RV corresponding to first data sent by the terminal in each time unit of N time units, each first data is generated by second data corresponding to the first data, and N is a positive integer; and the terminal sends corresponding first data on each time unit in the N time units according to the first indication information.

With reference to the eighth aspect, in a possible implementation manner, the first indication information is used to indicate an index of any one RV of S RVs, where the indexes of the S RVs satisfy a preset order, the S RVs are RVs corresponding to all first data sent by the terminal over 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 index of one RV, the index of the RV corresponds to one RV sequence, and the RV sequence includes information used to indicate an index of an RV corresponding to first data sent in each of N time units.

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

With reference to the eighth aspect, in a possible implementation manner, the method further includes: and the terminal sends second indication information to the network equipment, wherein the second indication information is used for indicating that a plurality of first data corresponding to the same second data received in the same time unit are merged and decoded.

With reference to the eighth aspect, in a possible implementation manner, in a case that N is greater than 1, the method further includes: and the terminal sends third indication information to the network equipment, wherein the third indication information is used for indicating that all first data corresponding to the same second data received in M 'time units are subjected to merging decoding, and 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, and when a value of the uplink shared channel indication field is 0 and a value of the CSI request field is 1, the uplink shared channel indication field and the CSI request field are used to indicate that multiple pieces of first data corresponding to the same piece of second data received in the same time unit are subjected to merging decoding.

With reference to the method provided in the seventh aspect or the eighth aspect, in a possible implementation manner, the second indication information indicates, through an index of an MCS and an index of an RV, where the index of the MCS and the index of the RV correspond to one first data sent in one time unit, and when the index of the MSC is 25 and the index of the RV is 1, the indexes of the MCS and the index of the RV are used to indicate that multiple first data corresponding to the same second data received in the same time unit are subjected to merging decoding.

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, the first data is a data stream or a codeword.

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

A ninth aspect provides a data transmission apparatus having a function of implementing any one of the methods provided in the fifth aspect. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more units corresponding to the above functions. For example, the apparatus may comprise a communication unit for performing the actions of the processing in the fifth aspect (e.g. actions other than transmitting and/or receiving) and a processing unit for performing the actions of the transmitting and/or receiving in the fifth aspect. Optionally, the actions performed by the communication unit are performed under the control of the processing unit. Optionally, the communication unit includes a transmitting unit and a receiving unit, in this case, the transmitting unit is configured to perform the transmitting action in the fifth aspect, and the receiving unit is configured to perform the receiving action in the fifth aspect. The device may be in the form of a chip product.

A tenth aspect provides a data transmission apparatus having a function of implementing any one of the methods provided in the sixth aspect. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more units corresponding to the above functions. For example, the apparatus may include a communication unit to perform the actions of the processing in the sixth aspect (e.g., actions other than transmitting and/or receiving), and a processing unit to perform the actions of the transmitting and/or receiving in the sixth aspect. Optionally, the actions performed by the communication unit are performed under the control of the processing unit. Optionally, the communication unit includes a transmitting unit and a receiving unit, in this case, the transmitting unit is configured to perform the transmitting operation in the sixth aspect, and the receiving unit is configured to perform the receiving operation in the sixth aspect. The device may be in the form of a chip product.

An eleventh aspect provides a data transmission apparatus having a function of implementing any one of the methods provided in the seventh aspect. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more units corresponding to the above functions. For example, the apparatus may include a communication unit to perform the acts of processing in the seventh aspect (e.g., acts other than transmitting and/or receiving) and a processing unit to perform the acts of transmitting and/or receiving in the seventh aspect. Optionally, the actions performed by the communication unit are performed under the control of the processing unit. Optionally, the communication unit includes a transmitting unit and a receiving unit, in this case, the transmitting unit is configured to perform the transmitting action in the seventh aspect, and the receiving unit is configured to perform the receiving action in the seventh aspect. The device may be in the form of a chip product.

A twelfth aspect provides a data transmission apparatus having a function of implementing any one of the methods provided in the eighth aspect. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more units corresponding to the above functions. For example, the apparatus may include a communication unit for performing the actions of the processing in the eighth aspect (e.g., actions other than transmitting and/or receiving) and a processing unit for performing the actions of the transmitting and/or receiving in the eighth aspect. Optionally, the actions performed by the communication unit are performed under the control of the processing unit. Optionally, the communication unit includes a transmitting unit and a receiving unit, in this case, the transmitting unit is configured to perform the transmitting action in the eighth aspect, and the receiving unit is configured to perform the receiving action in the eighth aspect. The device may be in the form of a chip product.

In a thirteenth aspect, there is provided a data transmission apparatus, including: a memory and a processor; optionally, the system further comprises at least one communication interface and a communication bus; the memory is used for storing computer-executable instructions, the processor, the memory and the at least one communication interface are connected through a communication bus, and the processor executes the computer-executable instructions stored by the memory to enable the data transmission device to implement any one of the methods provided by any one of the first aspect, the second aspect, and the fifth aspect to the eighth aspect. The device may be in the form of a chip product.

In a fourteenth aspect, a communication system is provided, comprising: the data transmission apparatus provided in the third and fourth aspects; alternatively, the data transmission apparatus provided in the ninth aspect and the tenth aspect; alternatively, the eleventh and twelfth aspects provide a data transmission device.

In a fifteenth aspect, a computer-readable storage medium is provided, comprising instructions which, when executed on a computer, cause the computer to perform any one of the methods provided in any one of the first, second, fifth to eighth aspects.

In a sixteenth aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform any one of the methods provided in any one of the first, second, fifth to eighth aspects.

The technical effects brought by any one of the design manners in the third aspect to the sixteenth aspect can be referred to the technical effects brought by the corresponding design manners in the first aspect and the second aspect, and are not described herein again.

It should be noted that, all possible implementation manners of any one of the above aspects may be combined without departing from the scope of the claims.

Drawings

FIG. 1 is a diagram illustrating a process for processing a data packet at a physical layer;

fig. 2 is a flowchart of a data transmission method according to an embodiment of the present application;

fig. 3 to fig. 10 are schematic diagrams respectively illustrating a method for sending first data according to an embodiment of the present application;

fig. 11 is a schematic diagram illustrating a data transmission apparatus according to an embodiment of the present application;

fig. 12 is a schematic diagram of hardware structures of a network device and a terminal according to 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. Where in the description of the present application, "/" indicates an OR meaning, for example, A/B may indicate A or B, unless otherwise indicated. "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. Also, in the description of the present application, "a plurality" means two or more than two, and "at least one" means one or more, unless otherwise specified.

In addition, in order to facilitate clear description of technical solutions of the embodiments of the present application, in the embodiments of the present application, terms such as "first" and "second" are used to distinguish the same items or similar items having substantially the same functions and actions. Those skilled in the art will appreciate that the terms "first," "second," etc. do not denote any order or quantity, nor do the terms "first," "second," etc. denote any order or importance.

The term "system" may be interchangeable with "network", wherein the OFDMA system may implement wireless technologies such as evolved universal radio terrestrial access (E-UTRA), Ultra Mobile Broadband (UMB), etc. the E-UTRA is a Universal Mobile Telecommunications System (UMTS) evolution version, the 3rd generation partnership project (3 GPP) is applicable to the long Term Evolution (TE) and L systems, and the following communication systems are all applicable to the communication systems.

The method provided by the embodiment of the application can be applied to various service scenarios, for example, an enhanced mobile bandwidth (eMBB) service scenario, a UR LL C service scenario, an internet of things (IoT) service scenario, a Machine Type Communication (MTC) service scenario, and the like.

The network element related to the embodiment of the application comprises a sending end and a receiving end. The sending end is network equipment, and the receiving end is a terminal; or, the sending end is a terminal, and the receiving end is a network device. In this case, when configuration information (for example, first configuration information hereinafter) and feedback information (for example, Acknowledgement (ACK) or negative-acknowledgement (NACK)) are involved, the terminal may interact with the network device, and data transmission may occur between the two terminals.

The network device may be a device deployed in a Radio Access Network (RAN) to provide a wireless communication function for a terminal, and may be a base station, for example, the network device may be a macro base station, a micro base station (also referred to as a small station), a relay station, an Access Point (AP), or the like in various forms, or may include a control node in various forms, such as a network controller, the control node may be connected to a plurality of base stations and configure resources for a plurality of terminals under the coverage of the plurality of base stations, in systems adopting different wireless access technologies, names of devices having a base station function may be different, for example, a global system for mobile communication (GSM) or a code division multiple access (code division multiple access) network may be called a base station (BTS), a broadband Code Division Multiple Access (CDMA) network, or a CDMA network node may be called a base station (BTS), a base station for short for wideband code division multiple access (MN), or a node b for short for receiving (CDMA) network (node, or a node b) network may be called a base station (node b) in a wireless access network (node b) network, a wireless access network, a node b, a wireless access network, or a wireless access network node b, or a wireless access network node, which may be called a wireless access network node, referred to a wireless access network node b, referred to a wireless access network node, referred to a wireless access network node b.

A terminal may be a Mobile Station (MS), a subscriber unit (subscriber unit), AN unmanned aerial vehicle (drone), AN IoT device, a Station (ST) in a wireless local area network (W L AN), a cellular phone (cellular phone), a smart phone (smart phone), a cordless phone, a wireless data card, a tablet type computer, a Session Initiation Protocol (SIP) phone, a wireless local loop (W LL) station, a Personal Digital Assistant (PDA) device, a wearable computer (laptop) type terminal, a smart phone (smart phone) connected to a future communication system, such as a Mobile Station (MS), a remote station, AN access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a wireless communication device, a user agent, or a User Equipment (UE).

In order to make the embodiments of the present application clearer, the data processing procedure of the physical layer is briefly described below.

The data sent from a Medium Access Control (MAC) layer to a physical layer is organized in the form of TBs, the data of the MAC layer may include an uplink shared channel(s), U L-SCH for short, a downlink shared channel(s), D L-SCH for short, and the like, the MAC layer may be a TB or a plurality of TB. referring to fig. 1, fig. 1 illustrates 2 TBs as an example, and the sending end performs preprocessing, scrambling (scrambling), modulation, layer mapping (layer mapping), precoding (precoding), and time-frequency resource mapping on each TB, and sends out a signal after time-frequency resource mapping after first transformation.

One TB may be referred to as a codeword after being preprocessed, and the codeword may be regarded as a TB with error protection. The preprocessing includes at least channel coding (channel coding) and rate matching.

The code words are scrambled and modulated to obtain constellation symbols. After layer mapping, the constellation symbols are mapped to one or more transmission layers (also commonly referred to as "layers"). Each layer corresponds to an active data stream. And precoding the data stream of each layer to obtain the precoded data stream. Precoding may include digital precoding, analog precoding, hybrid precoding, and the like. The precoded signals are transmitted using antenna ports, and one layer may be transmitted by at least one antenna port. Broadly, precoding is to adjust the weight of the data stream transmitted by the antenna, and includes at least one of phase adjustment and amplitude adjustment. The antennas may include, among other things, antenna ports (i.e., logical antennas), physical antennas, and so on. The weights may be collectively referred to as a precoding matrix. The dimension of the matrix is related to the number of antennas after adjustment and the number of data streams before adjustment. For example, precoding is a process of mapping a layer (layer) to an antenna port (antenna port) using a precoding matrix. The data stream after pre-coding is mapped to time frequency resource, and then is converted into time domain signal to be sent out.

In order to make the embodiments of the present application clearer, some terms referred to in the embodiments of the present application will be briefly described below.

1. Antenna port (antenna port)

An antenna port is a logical concept, and one antenna port may correspond to one physical transmitting antenna or a plurality of physical transmitting antennas. The antenna ports correspond to channels, and a receiving end can identify one channel through one antenna port. That is, if a plurality of physical antennas form an antenna port, the receiving end can only identify the channel corresponding to the antenna port, but cannot identify the channel corresponding to each physical antenna. A receiving end (e.g., a terminal) may perform channel estimation and data demodulation according to the reference signal corresponding to the antenna port. For example, a terminal may perform channel estimation and data demodulation according to a demodulation reference signal (DMRS) corresponding to a DMRS port.

Wherein, if two symbols are considered to be transmitted using the same antenna port, it means that the channel experienced by one of the symbols can be used to deduce (affer) the channel experienced by the other symbol.

2. Time cell

The time unit in this embodiment may be an Orthogonal Frequency Division Multiplexing (OFDM) symbol, a mini-slot (mini-slot), a slot (slot), a subframe (subframe), a frame (frame), a radio frame (radio frame), a system frame (system frame), a sampling point, a Transmission Time Interval (TTI), a Single carrier symbol (TTI), or the like. In the embodiment of the present application, a slot is sometimes taken as an example of a time unit to exemplarily describe the method provided in the embodiment of the present application, and in a specific implementation, the slot in these examples may also be replaced by another time unit, for example, by a mini-slot.

3. First data and 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. Wherein the processing of the second data comprises at least redundancy version processing. Redundancy version processing includes RV generation and RV extraction. The RV generation refers to a 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 are available, which may carry different redundant information and are therefore referred to as different RVs. Wherein, the index of the RV is used to indicate a start position for extracting data in the coded bits, and the value of the index of the RV includes: 0,1,2 and 3, the different values representing different starting positions for extracting data in the coded bits. RV extraction refers to a process of extracting one RV of the second data from the coded bits. The first data may be an RV of the second data extracted in the RV extraction process (in this case, if the second data is a TB, the first data may be considered to be the TB, specifically, one RV of the TB), or may be data obtained by processing the RV of the second data extracted in the RV extraction process. The RV corresponding to one first data is the RV of second data obtained by processing the second data corresponding to the first data through redundancy version. That is, 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 for the plurality of first data means that the redundant information of the second data related to the plurality of first data is the same, and the different RV for the plurality of first data means that the redundant information of the second data related to the plurality of first data is at least partially different.

In one case, the redundancy version processing may be performed prior to generating the codeword, in which case the RV generation process may be performed during channel coding and the RV extraction process may be performed during rate matching. The first data may be an RV of the second data extracted in the RV extraction process or a codeword generated from the RV of the second data extracted in the RV extraction process or a data stream generated from the RV of the second data extracted in the RV extraction process, and the second data may be a TB. Wherein a data stream is also called a layer of data.

In another case, the redundancy version processing may be performed after the codeword is generated, in this case, the first data may be an RV of the second data extracted in the RV extraction process or a data stream generated according to the RV of the second data extracted in the RV extraction process, and the second data may be a codeword or a TB. And when the second data is a code word, the first data is the data generated after the code word is added with redundant information.

4. Repetitive transmission mode

The repetitive transmission pattern of data may be classified into a time-domain repetitive transmission pattern, a spatial-domain repetitive transmission pattern, and a spatial and time-domain repetitive transmission pattern (simply referred to as a space-time repetitive transmission pattern). The time domain repetitive transmission mode is in the prior art, that is, the data transmission mode, the space domain repetitive transmission mode and the space-time repetitive transmission mode described in the above background art are provided in the embodiment of the present application. The spatial domain repetitive transmission mode may be a repetitive transmission mode in which a correspondence relationship between the time unit and the first data is a case 1 below, and the spatial domain repetitive transmission mode may be a repetitive transmission mode in which a correspondence relationship between the time unit and the first data is a case 2 or a case 3 below.

The original contents of the multiple data transmitted repeatedly are consistent, so that the multiple data can be combined and decoded.

5. Hybrid automatic repeat request (HARQ for short)

HARQ is a technology combining Forward Error Correction (FEC) and automatic repeat request (ARQ) methods. FEC adds redundant information to enable the receiving end to correct a portion of errors, thereby reducing the number of retransmissions. For the error that the FEC cannot correct, the receiving end requests the transmitting end to retransmit the data through an ARQ mechanism. The receiving end uses an error detection code, such as Cyclic Redundancy Check (CRC), to detect whether the received data packet is erroneous. If no error occurs, the receiving end sends ACK to the sending end, and the sending end sends the next data packet after receiving the ACK. If the data packet is wrong, the receiving end sends NACK to the sending end, and the sending end retransmits the data packet after receiving the NACK. Under the HARQ scheme, one data may be transmitted multiple times, where the multiple transmissions may be different RVs of the data, and data rates, spatial domain information, and the like of the multiple transmissions may also be different. The data sent by multiple times can be combined and decoded, so that the original data is obtained. In addition, the transmitting end may retransmit the data without receiving the ACK/NACK transmitted by the receiving end.

6. Transmission Configuration Indication (TCI) status (state)

For example, the TCI state may be used to indicate QC L information between a channel state information reference signal (CSI-RS) and a demodulation reference signal (DMRS).

For example, the cell format of TCI state is as follows:

wherein, the cell (cell) field is used to indicate a serving cell configuring the reference signal indicated by the QC L information (QC L-info).

The bandwidth part identification (BWP-Id) field is used to indicate the downstream bandwidth part (BWP) carrying the reference signal indicated by the QC L-info.

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

The QC L Type (qcl-Type) field is used for indicating the QC L Type corresponding to the reference signal indicated by the QC L-info.

In the description of the embodiments of the present application, "RVx" refers to RV with an index "x", where x is an integer of 0 or more and 3 or less. "RVs are the same" means that the RVs have the same index, "RVs are different" means that the RVs have different indices, "the same RV" means that the RVs have the same index, "and" different RVs "means that the RVs have different indices.

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 the N time units.

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

case 1,

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. And each first data is generated by the second data corresponding to the first data.

In case 1, if the number of the first data corresponding to N time units is greater than 2, a plurality of first data may correspond to the same RV, or the RVs corresponding to each first data may be different.

An example of case 1 can be seen in fig. 3, assuming that the time units are slots and N time units are the first slots. The first slot corresponds to 2 first data, which are first data 1 and first data 2, respectively. The first data 1 and the first data 2 are generated by the same second data, the RV corresponding to the first data 1 is a first RV, and the RV corresponding to the first data 2 is a second RV. The first RV may be different from the second RV, e.g., the first RV is RV0 and the second RV is RV 1. When the first data 3 is further sent in the first slot, the RV corresponding to the first data 3 is a third RV, and 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.

Case 2,

N is larger than 1, all the first data corresponding to N time units correspond to the same second data, and at least one time unit in the N time units corresponds to at least two first data. And each first data is generated by the second data corresponding to the first data.

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

Case 3,

N is larger 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; and each first data is generated by 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 multiple first data may correspond to the same second data, but all the first data corresponding to the same second data may not be in the same time unit.

For example, assume that a time unit is a slot, and N slots are a first slot and a second slot, respectively. Referring to fig. 6, first data 1 on a first slot and first data 3 on a second slot in fig. 6 correspond to one second data, and first data 2 on the first slot and first data 4 on the second slot correspond to the other second data. In fig. 6, all the first data corresponding to 2 slots correspond to two different second data, and each of the first data corresponding to one slot corresponds to one second data.

For example, assume that a time unit is a slot, and N slots are a first slot and a second slot, respectively. Referring to fig. 7, in fig. 7, first data 1 on a first slot and first data 4 on a second slot correspond to first second data, first data 2 on the first slot and first data 5 on the second slot correspond to second data, and first data 3 on the first slot and first data 6 on the second slot correspond to third second data. In fig. 7, all the first data corresponding to 2 slots correspond to three different second data, and each of the first data corresponding to one slot corresponds to one second data.

For example, assume that a time unit is a slot, and N slots are a first slot and a second slot, respectively. Referring to example 1 of fig. 8, first data 1 on a first slot, first data 2 on the first slot, first data 4 on a second slot, and first data 5 on the second slot correspond to one second data, and first data 3 on the first slot and first data 6 on the second slot correspond to another second data. In example 1 in fig. 8, all the first data corresponding to 2 slots correspond to two different second data, and two first data of three first data corresponding to one slot correspond to one second data, and another first data corresponds to another second data. Referring to example 2 of fig. 8, first data 1 on a first slot, first data 2 on the first slot, and first data 4 on a second slot correspond to one second data, and first data 3 on the first slot and first data 5 on the second slot correspond to another second data. In example 2 in fig. 8, all the first data corresponding to 2 slots correspond to two different second data, two first data of three first data corresponding to the first slot correspond to one second data, another first data corresponds to another second data, and two first data corresponding to the second slot correspond to one second data respectively.

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

203. And the receiving end carries out merging and decoding on the target first data.

The target first data is first data which is received in the same time unit of the N time units and is generated by the same second data; or, the target first data is first data generated by the same second data received over M time units.

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

In step 203, in a specific implementation, the receiving end may decode each first data in the target first data separately and then combine the first data, or decode all the first data in the target first data after combining the first data, which is not limited in this embodiment of the present application.

The merging and decoding method of the data may adopt ways of chase merging (CC for short), incremental redundancy (IR for short), and the like. Wherein the combining may comprise combining hard information and/or soft information. Step 203 provides only two ways of processing the first data by the receiving end, and in a specific implementation, the receiving end may also decode each received first data individually, and may also decode all the first data received in M time units and one or more previously received data that are also generated from the same second data.

The receiving end may determine whether the previously received data and the first data are generated by the same second data according to New Data Indicator (NDI) information. Specifically, the receiving end may determine whether the data sent by the multiple time units is generated by 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 by the same second data according to the HARQ process information. The HARQ process information may be a HARQ process identity, a HARQ process sub-identity, etc. The HARQ process sub-identifier may be an identifier indicating which TB the HARQ process is used for.

Optionally, the method further includes:

204. and the receiving end sends a data receiving result to the sending end.

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

The data receiving result may be used to feed back one or more decoding results (i.e., whether decoding is successful) of the first decoding result, the second decoding result, the third decoding result, and the fourth decoding result to the transmitting end. The first decoding result refers to a decoding result obtained by the receiving end decoding each first data, and may be referred to as an individual decoding result. The second decoding result refers to a merged decoding result of multiple first data transmitted on the same time unit by the receiving end. The third decoding result refers to a merged decoding result of all the first data transmitted by the receiving end in M time units. The fourth decoding result refers to a merged decoding result of all the first data received by the receiving end for M time units and one or more data previously received and also generated from the same second data.

In the method provided by the embodiment of the present application, the sending end sends, at least in one time unit of the multiple time units, multiple pieces of first data generated from the same second data, or repeatedly transmits, in the multiple time units, the multiple pieces of second data (that is, repeatedly transmits, in the multiple time units, multiple pieces of data, for example, multiple TBs), which, compared with sending, in the multiple time units, multiple different RVs of the same TB (that is, repeatedly transmits, in the multiple time units, the same data, that is, the same TB), ensures reliability of data transmission, and at the same time, can reduce data transmission delay and improve data transmission efficiency. That is, within the same transmission resource (e.g., transmission time), the success rate of transmission is increased, thereby improving the overall reliability of the system.

In the foregoing cases 2 and 3, optionally, for any time unit of the N time units corresponding to at least two first data generated from the same second data, the at least two first data generated from the same second data corresponding to the time unit correspond to a plurality of different RVs. The optional method may enable a device receiving a plurality of first data generated from the same second data to obtain a signal to interference plus noise ratio (SINR) gain (or a signal to noise ratio (SNR) gain for short), so as to improve data transmission efficiency.

In the above cases 1 to 3, optionally, when any one time unit of the N time units corresponds to at least two first data generated from the same second data, the RV corresponding to any two first data of the at least two first data generated from the same second data corresponding to the time unit is different. The optional method can enable the device receiving the plurality of first data generated by the same second data to obtain larger SNR gain, and improve the data transmission efficiency.

When 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 a plurality of first data may correspond to the same RV. In a plurality of first data corresponding to different time units and generated by the same second data, each first data may correspond to one RV, or a plurality of first data may correspond to the same RV.

For example, assume that a time unit is a slot, and N slots are a first slot and a second 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 slot is RV0, the RV corresponding to the first data 2 on the first slot is RV1, the RV corresponding to the first data 3 on the second slot is RV0, and the RV corresponding to the first data 4 on the second slot is RV 2. In the example shown in fig. 9, first data corresponding to the same slot each corresponds to one RV, and for different slots, the RV corresponding to the first data 1 and the first data 3 is the same, and the RV corresponding to the first data 2 and the first data 4 is different.

The RV corresponding to a plurality of first data generated from different second data may be the same or different. For example, assume that a time unit is a slot, and N slots are a first slot and a second slot, respectively. Referring to fig. 10, first data 1 and first data 3 are generated from one second data, and first data 2 and first data 4 are generated from the other second data. The RV corresponding to the first data 1 on the first slot is RV0, the RV corresponding to the first data 2 on the first slot is RV0, the RV corresponding to the first data 3 on the second slot is RV1, and the RV corresponding to the first data 4 on the second slot is RV 2. In the example shown in fig. 10, first data 1 and first data 2 corresponding to a first slot correspond to the same RV (i.e., RV0), and first data 3 and first data 4 corresponding to a second slot correspond to different RVs.

In the following, further schemes included in the embodiments of the present application are exemplified in two different scenarios (denoted as scenario 1 and scenario 2).

Scene 1, a sending end is a terminal, and a receiving end is a network device.

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

In the scheme 1, a receiving end sends first indication information to a sending end, where the first indication information is used by the sending end to determine an index of an RV corresponding to first data sent in each time unit of N time units. Accordingly, the transmitting end receives the first indication information from the receiving end.

Optionally, for each time unit in the 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, where the index combination may be one of (0,2), (2,3), (3,1), (1,0), or the index combination may be an index combination selected from preset index combinations, where the preset index combinations optionally 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 an index combination corresponding to each time unit in the N time units, and further determine an index of an RV corresponding to the first data sent in each time unit.

For example, if N is 1 and N time units correspond to two pieces of first data, the first indication information is used to indicate an index of an RV corresponding to the two pieces of first data corresponding to the 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 RVs corresponding to the two first data are 3 and 1, respectively, or the indexes of the RVs corresponding to the two first data are 1 and 0, respectively.

Optionally, the indexes of RVs corresponding to the two first data have to satisfy a predetermined order, for example, taking an index combination (0,2) as an example, when the index of the RV corresponding to the first data 1 in the two first data is 0, the index of the RV corresponding to the first data 2 in the two first data has to be 2, but cannot be 1, nor 3. For 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, but it cannot be 1, nor 0. However, it should be noted that which first data 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, and these rules may be preset or configured by the network device or specified by a protocol or determined by negotiation between the terminal and the network device, and the method for determining the rules is not limited in this application. For example, the first data 1 may be data whose corresponding frequency domain resource identification (e.g., RB index) is smaller, and the first data 2 may be data whose corresponding frequency domain resource identification is larger. And vice versa.

The role of the first indication information can be seen in examples 1 to 4.

Examples 1, 1,

The first indication information is used for indicating an index of an RV corresponding to first data sent by the sending end in each of the N time units. Illustratively, based on the example shown in fig. 10, the first indication information may indicate an index of an 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 a plurality of RV indication fields, and one RV indication field is used to indicate an index of an RV corresponding to one first data. One RV indication field may correspond to one TB, or one RV indication field may correspond to one TCI status (state). The TCI status corresponding to the first data may be indicated by a TCI field in Downlink Control Information (DCI) for scheduling the first data, and the TCI field in the DCI may indicate one or more TCI statuses. When the TCI field indicates a plurality of TCI states, the order of the plurality of TCI states may be consistent with the order of the indication information in the TCI field, for example, the indication information in the TCI field is sorted into indication information 1, indication information 2, and indication information 3, then the indication information 1 is information indicating a first TCI state, the indication information 2 is information indicating a second TCI state, and the indication information 3 is information indicating a third TCI state; optionally, the order of the multiple TCI states may also be according to the ordering of the indexes of the TCI states indicated in the TCI domain, for example, the ordering of the indication information in the TCI domain is indication information 1 (corresponding to index 2 of the TCI state), indication information 2 (corresponding to index 0 of the TCI state), and indication information 3 (corresponding to index 1 of the TCI state), so that indication information 1 is information indicating a third TCI state, indication information 2 is information indicating a first TCI state, and indication information 3 is information indicating a second TCI state, optionally, the order of the TCI states may be consistent with the order of the indexes of the TCI states from small to large, or the order of the TCI states may be consistent with the order of the indexes of the TCI states from large to small. It can be said from the above description that when the TCI field indicates the TCI status, the TCI status may or may not be indicated in the order of the indication information of the TCI field, and of course, optionally, the TCI status may or may not be indicated in the order of the TCI status index.

For example, if N is 1 and N time units correspond to two first data, the RV indication field 1 may be used to indicate an index of an RV corresponding to the first data 1, and the RV indication field 2 may be used to indicate an index of an RV corresponding to the first data 2. Optionally, the RV indication field 1 corresponds to a first TB (TB corresponding to the first data 1), and the RV indication field 2 corresponds to a second TB (TB corresponding to the first data 2); alternatively, the RV indication field 1 corresponds to the TCI state 1 (TCI state corresponding to the first data 1), and the RV indication field 2 corresponds to the TCI state 2 (TCI state corresponding to the first data 2). Wherein TCI state 1 and TCI state 2 may be indicated by a TCI field in the DCI scheduling first data 1 and first data 2.

Alternatively, the index 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 a predetermined order, for example, taking an 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 2, but may not be: the index indicated by the RV indication field 1 is 2, and the index indicated by the RV indication field 2 is 0. However, the present application is not limited to which RV indication field of the two RV indication fields is the RV indication field 1, and which RV indication field is the RV indication field 2.

Examples 2,

The first indication information is used for indicating the index of any one RV in the S RVs, the indexes of the S RVs meet a preset sequence, and S is an integer larger than 1.

Specifically, the indexes of the S RVs may satisfy a preset loop sequence, or may be other preset sequences.

The S RVs may be RVs corresponding to all first data sent by the sending end in N time units, or may also be RVs corresponding to all first data sent by the sending end in a part of the N time units, or may also be RVs corresponding to all first data generated by the same second data in the N time units, or may also be RVs corresponding to all first data sent by a certain time unit, or may also be RVs corresponding to all first data generated by the same second data in a certain time unit. The embodiment of the present application is not particularly limited to this. Under different conditions, the value of S may also be different, and may be specifically determined according to actual conditions. For example, when S RVs are RVs corresponding to all first data transmitted by the transmitting end in N time units, S is an integer greater than N.

For example, the first indication information may indicate an index of one RV (denoted as a first RV) of the S RVs, such as an index of a 1 st RV or an index of a last RV.

The S RVs may be sorted in order from small to large or from large to small according to the identifier of the first data. And the first data with the same identification on different time units are sorted according to the sequence of the serial numbers of the time units from small to large or from large to small. For example, 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 both 1, the 1 st RV to the 4 th RV of the S RVs may be: the RV corresponding to the first data 1, the RV corresponding to the first data 3, the RV corresponding to the first data 2, and the RV corresponding to the first data 4.

The S RVs may also be ordered in order of time unit number from small to large or from large to small. And the first data on the same time unit is sorted according to the sequence of the identifiers from small to large or from large to small. For example, 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 both 1, the 1 st RV to the 4 th RV of the S RVs may be: the RV corresponding to the first data 1, the RV corresponding to the first data 2, the RV corresponding to the first data 3, and the RV corresponding to the first data 4.

In the embodiment of the present application, the S RV numbers may start from 0 or from 1. In the former case, the RV with the number S-1 is the S-th RV of the S RVs. In the embodiments of the present application, the method provided in the embodiments of the present application is exemplified by taking S RV numbers starting from 0. S is an integer of 0 to S inclusive. It should be noted that S RVs are RVs corresponding to S first data, one first data corresponds to one RV, and RVs with different numbers in the S RVs are used for distinguishing RVs corresponding to different first data.

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

Based on the example shown in table 1, when the index of the RV numbered 0 is indicated by the first indication information and the index of the RV is 0, the index of the RV numbered 1 is 2, the index of the RV numbered 2 is 3, the index of the RV numbered 3 is 1, the index of the RV numbered 4 is again 0, and so on.

TABLE 1

Note: s' is an integer of 0 or more and less than S. The particular value of the index of the RV numbered s ' can be determined from the value after s ' has left 4 (i.e., s ' mod 4). The columns from left to right in table 1 are referred to as 1 st column to 5th column in this order. Specifically, if the value after s 'is left over by 4 is 0, the index of the RV numbered s' is the value in column 2 in table 1, and specifically which value in column 2 can be determined from the index of the RV indicated by the first indication information. If the value of s 'left the 4 is 1, the index of the RV numbered s' is the value of the 3rd column in table 1, and specifically which value in the 3rd column can be determined from the index of the RV indicated by the first indication information. If the value of s 'left the 4 is 2, the index of the RV numbered s' is the value of the 4 th column in table 1, and specifically, which value in the 4 th column can be determined from the index of the RV indicated by the first indication information. If the value of s 'left the 4 is 3, the index of the RV numbered s' is the value of the 5th column in table 1, and specifically which value in the 5th column can be determined from the index of the RV indicated by the first indication information.

Since S RVs satisfy a preset loop sequence, after determining an index of the start of the loop sequence, the receiving end may determine an index corresponding to each RV of the S RVs according to a function mod (S ', k), where mod (S ', k) is S ' mod k, and S ' mod k specifically means S ' complements k. mod (S', k) indicates that the order of the indices of the S RVs has a cyclic character. In table 1, k is exemplified as 4, and k may be another value in actual implementation, for example, k may be 2 or 8. k can be determined according to the number of time units of data repeated transmission and/or the number of first data generated by the same second data corresponding to one time unit. For example, k may be determined according to an argument as 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. Illustratively, the function may be a multiplication function. For example, when the number of time units for data retransmission is 4 and each time unit corresponds to 2 codewords, k is a product of 4 and 2, i.e., 8.

Where s' may also be the number of the first data.

It should be noted that the preset cycle order satisfied by the indexes of the S RVs may also be: 0 → 1 → 2 → 3 → 0 → 1 → 2 → 3 → …, or 0 → 1 → 0 → 1 → 0 → 1 → …, or 0 → 0 → 0 → …, etc. The embodiment of the present application is not particularly limited to this.

For example, if N is 1 and N time units correspond to two first data, the RV corresponding to the first data 1 of the two first data is denoted as a first RV, and the RV corresponding to the first data 2 of the two data is denoted as a second RV. The first indication information may indicate an index of one RV, and 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 the RV is RV0, the first RV is RV0 and the second RV is RV 2. If the first indication information indicates that the RV is RV2, the first RV is RV2, and the second RV is RV 3. Wherein the first data 1 may correspond to a TCI state 1, and the first data 2 may correspond to a TCI state 2. Wherein TCI state 1 and TCI state 2 may be indicated by a TCI field in the DCI scheduling first data 1 and first data 2. It should be noted that, which first data 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, and these rules may be preset, or configured by the network device, or specified by a protocol, or determined by negotiation between the terminal and the network device, and the method for determining the rules is not limited in this application. For example, the first data 1 may be data whose corresponding frequency domain resource identification (e.g., RB index) is smaller, and the first data 2 may be data whose corresponding frequency domain resource identification is larger. And vice versa.

TABLE 1.1

Index of RV indicated by first indication information	First RV	Second RV
			0	0	2
2	2	3
			3	3	1
1	1	0

In example 2, the terminal may obtain the indexes of the RVs corresponding to the S first data according to the preset cyclic sequence that is satisfied by the first indication information and the indexes of the S RVs, and the network device may not indicate the index of each RV, thereby saving transmission resources.

Examples 3,

The first indication information is used for indicating an index of one RV, the index of the RV corresponds to one RV sequence, and the RV sequence includes information for indicating the index of the RV corresponding to the first data sent in each of the N time units.

In the embodiment of the present application, the number of N time units may start from 0, or may start from 1. When the former, the time unit numbered N-1 is the nth time unit of the N time units. In the embodiments of the present application, the method provided in the embodiments of the present application is exemplified by taking the number of N time units as an example, starting from 0. N is an integer of 0 to N.

For example, if the number of the first data sent by the sending end over N time units is 2, the correspondence between the index of one RV and the RV sequence may be referred to in table 2, and the indexes of different RVs may correspond to different RV sequences, for example, the indexes of 4 RVs in the leftmost column in table 2 each correspond to one 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 2 pieces of first data transmitted in the time unit with the number of 0 are 2 and 3, respectively, the indexes of the RVs of the 2 pieces of first data transmitted in the time unit with the number of 1 are 3 and 0, respectively, and so on.

TABLE 2

Note: w is an integer of 0 to N.

Table 2 exemplarily shows a corresponding relationship between a value of the first indication information (i.e., an index of the RV indicated by the first indication information) and the RV sequence. In a specific implementation, the value of the first indication information and the RV sequence may also have other corresponding relationships, which is not limited in this embodiment.

The corresponding relationship between the index of the RV 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. If the latter, the method further comprises: the receiving end sends first configuration information to the sending end. Accordingly, the transmitting end receives the first configuration information from the receiving end. The first configuration information is used for configuring the corresponding relation between the index of the RV and the RV sequence.

The first configuration information may be configured through higher layer signaling (e.g., Radio Resource Control (RRC) signaling, and/or MAC control element (MAC CE) signaling).

In example 3, the terminal may obtain the index of the RV corresponding to each first data according to the first indication information and the correspondence between the index of the RV 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 index of an RV or not, and may be an index value used as a lookup correspondence), one index identifier corresponds to one RV sequence, and the RV sequence may be determined according to the index identifier indicated by the first indication information, so as to determine an index of an RV corresponding to each first data.

For example, if N is 1 and N time units correspond to two first data, the RV corresponding to the first data 1 of the two first data is denoted as a first RV, and the RV corresponding to the first data 2 of the two data is denoted as a second RV. The first indication information may indicate an index identifier, and 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 flag indicated by the first indication information is X1, the first RV is RV0 and the second RV is RV 2. If the index identifier indicated by the first indication information is X2, the first RV is RV2, and the second RV is RV 3. Wherein the first data 1 may correspond to a TCI state 1, and the first data 2 may correspond to a TCI state 2. Wherein TCI state 1 and TCI state 2 may be indicated by a TCI field in the DCI scheduling first data 1 and first data 2. It should be noted that, which first data 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, and these rules may be preset, or configured by the network device, or specified by a protocol, or determined by negotiation between the terminal and the network device, and the method for determining the rules is not limited in this application. For example, the first data 1 may be data whose corresponding frequency domain resource identification (e.g., RB index) is smaller, and the first data 2 may be data whose corresponding frequency domain resource identification is larger. And vice versa.

TABLE 2.1

Index identification indicated by first indication information	First RV	Second RV
			X1	0	2
X2	2	3
			X3	3	1
X4	1	0

Similarly, what the first indication information in the first column of table 1 and table 2 indicates may also be an index identifier. The determination of the correspondence between the index identifier and the RV index and the determination of the correspondence between the index of the RV and the RV sequence are similar and can be understood with reference to the above description, which is not repeated.

Table 1, table 1.1, table 2, and table 2.1 in the embodiments of the present application are merely exemplary representations of the meanings shown in the tables, and other forms are also possible, for example, the rows and columns of the tables may be changed, or the tables may be described by words.

Based on the above examples 1 to 4, when implemented, the step 202 may include: the sending end sends corresponding first data to the receiving end on each time unit in the N time units based on the first indication information. Step 203, when implemented, includes: 11) and the receiving terminal carries out merging decoding on the target first data based on the first indication information.

Prior to step 11), the method further comprises: 21) and the receiving end determines the RV corresponding to each first data in the target first data based on the first indication information. In this case, the step 11) may include, in a specific implementation: and the receiving end carries out merging decoding on the target first data according to the RV corresponding to each first data in the target first data.

Based on the above example 1, in step 21), in a specific implementation, the receiving end may determine, directly based on the first indication information, an RV corresponding to each of the target first data. Based on the above example 2, in step 21), in a specific implementation, the receiving end may calculate or look up a table based on the preset loop sequence that the first indication information and the indexes of the S RVs satisfy to obtain the RV corresponding to each first data in the target first data. Based on the above example 3, the receiving end may determine an RV sequence based on the correspondence between the index of the RV and the RV sequence and the first indication information, and determine, according to the RV sequence, an RV corresponding to each first data in the target first data. 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, according to the RV sequence, an RV corresponding to each first data in the target first data. In addition, the transmitting end may also determine an index of the RV corresponding to the first data transmitted per time unit by itself. In this case, the index between the time unit and the RV corresponding to the first data to be transmitted may be determined based on a mathematical function, for example, the input of the mathematical function may be the time unit or TB or the number of the codeword or data stream, and the output may be the index of the RV corresponding to the first data to be transmitted over 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 indicated by the receiving end.

It should be noted that the scheme described in example 1, the scheme described in example 2, the scheme described in example 3, and the scheme described in example 4 in the embodiments of the present application do not depend on the above steps 201 to 202, and may 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.

And in the scheme 2, the receiving end sends fourth indication information to the sending end, wherein the fourth indication information is used for indicating N ', N ' is the number of time units for sending the first data by the sending end, and N ' is an integer greater than or equal to N.

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

N' may be indicated by the fourth indication information, or may be preconfigured (e.g., protocol conventions). The transmitting end and the receiving end may determine N according to N' and the nature of the time unit, whether there are other channels, etc. The nature of the time unit includes whether the time unit is available for transmission of a signal.

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. And aiming at the downlink data, the uplink time unit is an unavailable time unit. For uplink data, the downlink time unit is an unavailable time unit. The unavailable time unit can also be a defined time unit that is unavailable for transmission, and the unavailable time unit can also be a defined time unit that is unavailable for communication.

For example, if N 'is 4 and a time unit for the transmitting end to start transmitting the first data is slot0, the slots for the transmitting end to transmit the first data are slots 0 to 3, that is, N' slots are slot0, slot1, slot2, and slot 3. If the slot2 is a downlink slot, the transmitter cannot transmit the first data at slot 2. At this time, the transmitting end transmits first data in slots 0,1 and 3, that is, N slots are slot0, slot1 and slot 3.

Scene 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 schemes 3 and 4.

And in the scheme 3, the sending end sends first indication information to the receiving end, wherein the first indication information is used for the receiving end to determine the index of the RV corresponding to the first data received in each time unit of the N time units. Accordingly, the receiving end receives the first indication information from the transmitting end. For the role of the first indication information, reference may be made to examples 1 to 4, which are not described herein again.

In example 3, the correspondence between the index of the RV 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. If the latter, the method further comprises: the sending end sends first configuration information to the receiving end. Accordingly, the receiving end receives the first configuration information from the transmitting end. The related description about the first configuration information can be referred to above, and is not repeated herein.

Based on the above examples 1 to 4, when implemented, the step 202 may include: the sending end sends corresponding first data to the receiving end on each time unit in the N time units based on the first indication information. Step 203, when implemented, includes: 31) and the receiving terminal carries out merging decoding on the target first data according to the first indication information.

Prior to step 31), the method further comprises: 41) the receiving end determines, according to the first indication information, an RV corresponding to each of the target first data, and in this case, the step 31) may include, when specifically implemented: and the receiving end carries out merging decoding on the target first data according to the RV corresponding to each first data in the target first data.

Based on the above example 1, in step 41), in a specific implementation, the receiving end may directly determine, according to the first indication information, an RV corresponding to each of the target first data. Based on the above example 2, in step 41), in a specific implementation, the receiving end may calculate or look up a table according to the preset loop sequence that the first indication information and the indexes of the S RVs satisfy to obtain the RV corresponding to each first data in the target first data. Based on the above example 3, in step 41), in a specific implementation, the receiving end may determine an RV sequence according to the correspondence between the index of the RV and the RV sequence and the first indication information, and determine, according to the RV sequence, an RV corresponding to each first data in the target first data. Based on the above example 4, in step 41), in a specific implementation, the receiving end may determine an RV sequence according to the correspondence between the index identifier and the RV sequence and the first indication information, and determine, according to the RV sequence, an RV corresponding to each first data in the target first data.

And in the scheme 4, the sending end sends fourth indication information to the receiving end, wherein the fourth indication information is used for indicating N ', N ' is the number of time units for sending the first data by the sending end, and N ' is an integer greater than or equal to N.

In this case, the step 202, when implemented specifically, includes: the sending end sends corresponding first data to the receiving end on each time unit in the N time units based on the fourth indication information, and correspondingly, the receiving end receives the corresponding first data from the sending end on each time unit in the N time units according to the fourth indication information.

It should be noted that the values of N' and N may be different. For details, reference may be made to the above description, which is not repeated herein.

It should be noted that the schemes described in scheme 1 and scheme 3 in the embodiment 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. For example, the combination of scheme 1 with other schemes when implemented independently can be referred to the contents of the seventh aspect and the eighth aspect of the present disclosure, and the combination of scheme 3 with other schemes when implemented independently can be referred to the contents of the fifth aspect and the sixth aspect of the present disclosure. And will not be described in detail herein.

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

in one possible implementation (referred to as a first possible implementation), the sending end may further indicate to the receiving end whether to perform merging decoding of data in time units and/or merging decoding of data between time units. In another possible implementation (referred to as a second possible implementation), the sending end may further instruct the receiving end to perform merging decoding between TBs or code words or data streams. These two possible implementations are described separately below.

In a first possible implementation:

optionally, the method further includes: and the sending end sends second indication information to the receiving end, wherein the second indication information is used for indicating that a plurality of first data corresponding to the same second data received in the same time unit are subjected to merging decoding. Accordingly, the receiving end receives the second indication information from the transmitting end.

In this case, the step 203 may include, when implemented specifically: and the receiving end carries out merging and decoding on the target first data according to the second indication information, wherein the target first data is the first data which is received in the same time unit of the N time units and is generated by the same second data.

In step 203, in a specific implementation, for example, in a case that the first data is a codeword, the receiving end may perform merging decoding on multiple codewords corresponding to the same second data in the same time unit according to the second indication information. When the first data is a data stream, the receiving end may perform merging and decoding on multiple data streams (i.e., multiple layers of data) corresponding to the same second data in the same time unit according to the second indication information.

The second indication information may be indicated by any one of the following modes 1 to 4, where mode 1 is applied to downlink data, modes 2 and 3 are applied to uplink data, and mode 4 is applied to both downlink data and uplink data.

Mode 1 (network equipment for transmitting end)

The second indication information is indicated by a downlink aggregation factor (i.e., a pdsch-aggregation factor) field, and when the value of the pdsch-aggregation factor field is 1, the pdsch-aggregation factor field is used for indicating that a plurality of first data corresponding to the same second data received in the same time unit are subjected to merging decoding.

Wherein, the pdsch-aggregation factor field can be configured in higher layer signaling (e.g., RRC signaling, MACCE signaling, etc.). When the network device sends a plurality of first data corresponding to the same second data in a time unit and the value of the pdsch-aggregation factor field is 1, the field indicates the terminal to merge and decode the plurality of first data corresponding to the same second data in the same time unit.

Mode 2 (terminal is the sending end)

The second indication information is indicated by an uplink aggregation factor (pusch-aggregation factor) field, and when the value of the pusch-aggregation factor field is 1, the pusch-aggregation factor field is used for indicating that multiple pieces of first data corresponding to the same piece of second data received in the same time unit are subjected to merging decoding.

The pusch-aggregation factor field may be configured in higher layer signaling (e.g., RRC signaling, MACCE signaling, etc.). When the terminal sends a plurality of first data corresponding to the same second data in a time unit and the value of the pusch-aggregation factor field is 1, the field indicates the network device to perform merging and decoding on the plurality of first data corresponding to the same second data received in the same time unit.

Mode 3 (terminal is the sending end)

The second indication information is indicated by an uplink shared channel indication (U L-SCH indicator) field and a CSI request (CSIrequest) field, and when the value of the U L-SCH indicator field is 0 and the value of the CSI request field is 1, the U L-SCH indicator field and the CSI request field are used for indicating that a plurality of first data corresponding to the same second data received in the same time unit are combined and decoded.

The U L-SCH indicator field and the CSI request field may be configured in Downlink Control Information (DCI).

Mode 4 (network equipment or terminal for transmitting end)

The second indication information indicates, through an index of a Modulation and Coding Scheme (MCS) and an index of the RV, which correspond to one first data sent in one time unit, 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 that multiple first data corresponding to the same second data received in the same time unit are subjected to merging decoding.

Note that one DCI may include information of MCS indexes and RV indexes corresponding to 2 TBs. If the index of the MCS corresponding to one TB of the 2 TBs is 25 and the index of the RV is 1, when the first data is a data stream, it indicates that the transmitting end has transmitted only one TB in the time unit scheduled by the DCI, and multiple data streams corresponding to the same second data in the same time unit are merged and decoded. If the index of the MCS corresponding to one of the 2 TBs is 25 and the index of the RV is 1 when the first data is a codeword, it indicates that the transmitting end has transmitted the 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 decoded by combining.

Illustratively, MCS and RV corresponding to TB0 in 2 TBs are respectively recorded as MCS-0 and RV-0, and MCS and RV corresponding to TB1 are respectively recorded as MCS-1 and RV-1. If the index of MCS-1 is 25 and the index of RV-1 is 1, it indicates that the transmitting end only transmits one TB in the time unit scheduled by the DCI and multiple data streams corresponding to the same second data in the same time unit need to be merged and decoded. Under the condition that the first data is a code word, if the index of MCS-1 is 25 and the index of RV-1 is 1, it indicates that the transmitting end has transmitted two TBs in the time unit scheduled by the DCI and a plurality of code words corresponding to the same second data in the same time unit need to be merged and decoded. The same time unit may be the time unit of TB0, or any one or more time units of N time units.

In the case that the first data is a codeword, in one possible implementation, the MCS, RV, and NDI (NDI is used to indicate whether the TB is newly transmitted or retransmitted) corresponding to TB1 may refer to TB 0.

In another possible implementation, in the case that the first data is a codeword, the MCS and NDI corresponding to TB1 may refer to TB 0. At this time, since NDI of TB1 refers to NDI of TB0, NDI of TB1 may be used for other purposes. For example, the NDI of TB1 may be used to indicate the RV corresponding to TB1, when the NDI of TB1 has a value of 0, the RV corresponding to TB1 is the same as the RV corresponding to TB0, and when the NDI of TB1 has a value other than 0, the index of the RV corresponding to TB1 may be: (index +3 of RV for TB 0) mod 3.

It should be noted that TB0 and TB1 in the embodiment 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 TB 2.

Optionally, in a case that N is greater than 1, the method further includes: and the sending end sends third indication information to the receiving end, wherein the third indication information is used for indicating that all the first data corresponding to the same second data received in M' time units are merged and decoded. Accordingly, the receiving end receives the third indication information from the transmitting end.

The role of the third indication information can also be described as: the third indication information is used for indicating that the first data corresponding to the same second data in each time unit of the M 'time units and received indirectly by the M' time units are merged and decoded. That is, the third indication information indicates both the merge decoding of the first data within a time unit and the merge decoding of the first data between time units.

In this case, the step 203 may include, when implemented specifically: and the receiving terminal performs merging decoding on the target first data according to the third indication information, wherein the target first data are all first data which are received on the M time units and are generated by the same second data.

It should be noted that the number of the time units of the merging decoding indicated by the sending end to the receiving end and the number of the time units of the actual merging decoding by the receiving end may be the same or different, that is, the values of M' and M may be the same or different. In addition, the number of time units actually subjected to the merging decoding by the receiving end and the number of time units subjected to the merging decoding indicated by the transmitting end to the receiving end are not necessarily the same as the number of time units for transmitting the first data by the transmitting end. That is, the values of M and M' and N may be the same or different. For example, in one case, the network device indicates to the terminal that the data is repeatedly transmitted over 4 (i.e., N' ═ 4) time units, and the terminal actually performs the repeated transmission of the data over 3 (i.e., N ═ 3) time units due to the unavailable time units in the 4 time units. After that, the terminal may instruct the network device to perform merge decoding on the first data generated from the same second data corresponding to 3 (i.e., M' ═ 3) time units, whereas the network device may perform merge decoding only on the first data generated from the same second data corresponding to 2 (i.e., M ═ 2) time units due to its own needs.

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

Mode one (network equipment at the sending end)

The third indication information indicates through a pdsch-aggregation factor field, and when the value of the pdsch-aggregation factor field is M ', the pdsch-aggregation factor field is used for indicating that all the first data corresponding to the same second data received in M' time units are merged and decoded.

Wherein, the pdsch-aggregation factor field can be configured in higher layer signaling (e.g., RRC signaling, MACCE signaling, etc.).

It should be noted that, when the pdsch-aggregation factor field is not configured in the RRC signaling, the receiving end does not decode the first data received in the same time unit and different time units in a combined manner.

Mode two (terminal is the sending terminal)

The third indication information indicates through a pusch-AggregationFactor field, and when the value of the pusch-AggregationFactor field is M ', the pusch-AggregationFactor field is used for indicating that all the first data corresponding to the same second data received in M' time units are subjected to merging decoding.

The pusch-aggregation factor field may be configured in higher layer signaling (e.g., RRC signaling, MACCE signaling, etc.).

The second indication information is used for indicating merging and decoding of data in a time unit, and the third indication information is used for indicating merging and decoding of data in the time unit and between the time units. In a specific implementation, the second indication information may indicate merging and decoding of data in a time unit, the other indication information (for example, fifth indication information) may indicate merging and decoding of data between time units, and the second indication information and the fifth indication information may indicate merging and decoding of data in a time unit and between time units. For the uplink data, in a possible implementation manner, the fifth indication information may be indicated by a pusch-aggregative factor field, and when the value of the pusch-aggregative factor field is M ', the pusch-aggregative factor field is used to indicate that the first data corresponding to the same second data received in different time units of the M' time units are subjected to merging decoding. For the downlink data, in a possible implementation manner, the fifth indication information may be indicated by a pdsch-aggregation factor field, and when the value of the pdsch-aggregation factor field is M ', the pdsch-aggregation factor field is used to indicate that the first data corresponding to the same second data received in different time units of the M' time units are to be merged and decoded.

In addition, the receiving end can also determine to carry out merging decoding of data in time units and/or merging decoding of data between time units according to other modes. For example, if the receiving end receives multiple DCIs with the same HARQ ID before performing HARQ feedback of one first data, merging and decoding are performed between the first data scheduled by the multiple DCIs. It can be understood that, in this case, if the first data of the plurality of DCI schedules is transmitted in one time unit, the receiving end performs merging decoding of the data in the time unit, and if the first data of the plurality of DCI schedules is transmitted in a plurality of time units, the receiving end performs merging decoding of the data in the time unit and between the time units. Furthermore, if the first data scheduled by the multiple DCIs is transmitted over multiple time units, the number of time units for decoding and merging may also be indicated by the fifth indication information. For example, if the first data scheduled by the multiple DCIs are transmitted in 5 time units and the fifth indication information indicates to perform merging decoding on the first data transmitted in 3 time units, the receiving end performs merging decoding on the first data transmitted in 3 time units of the 5 time units.

In a second possible implementation:

optionally, the method further includes: and the transmitting end transmits sixth indication information to the receiving end, wherein the sixth indication information is used for indicating the merging and decoding of the TB or the code word or the data stream generated by the same second data.

In this case, step 203 may be replaced with: and the receiving end carries out merging decoding on the TB or the code word or the data stream generated by the same second data.

The sixth indication information may be indicated by any one of the following modes (1) and (2).

Mode (1),

The sixth indication information indicates that the combined decoding is performed on the TB or the code word or the data stream generated by the same second data.

In this case, the same second data may be upper layer data, and in the case of performing merging decoding on TBs, since the number of TBs transmitted in one time unit is at most 2, the sixth indication information may directly indicate to perform data merging decoding. For example, the sixth indication information may indicate that, when the value of the bit is 1 (or 0), the TB or the codeword or the data stream generated from the same second data is decoded in a merging manner.

In the case of performing the merging decoding on the codeword or the data stream, the sixth indication information may indicate an index/identifier of the codeword or the data stream that needs to be merged and decoded.

For example, two RV indications may be included in the DCI, and each RV indication is used to indicate an RV corresponding to 2 TBs. 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 a first TB, and the second RV indication refers to the RV indication of a second TB. In the embodiment of the present application, a first RV indication in DCI is used to indicate information of RVs corresponding to 2 TBs, and a second RV indication is used to indicate whether different TBs perform merging decoding. The second RV indication may also be used to indicate whether TBs sent in different time units are to be combined for decoding.

Referring to table 2 above, the first RV indication may be used to indicate information of RVs corresponding to two TBs per time unit. In this case, referring to table 3, the second RV indication may indicate whether two TBs are data merge decoded.

TABLE 3

Index of RV indicated by sixth indication information	Whether to perform data merging decoding
		First value	Data merging decoding by two TBs
The second value	Two TBs do not perform data merge decoding
		Third value	Retention
The fourth value	Retention

The value of the sixth indication information may also be used to indicate whether the TBs of multiple time units are to be subjected to merging decoding.

Optionally, when the network device configures a repeat transmission mode for the terminal, the terminal interprets the RV instruction in the DCI according to the meaning indicated by the RV instruction; when the transmission mode is not repeated, or the number of times of repeated transmission is 1, the terminal interprets a first RV indication to indicate the RV of the first TB, and a second RV indication to indicate the RV of the second TB.

Mode (2),

The sixth indication information indicates a combination of indexes of RVs corresponding to the two first data of the merge coding. 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 indexes of the RVs corresponding to the first data transmitted by the transmitting end is a combination for performing the merge decoding, the receiving end performs the merge decoding on the first data. And if the combination of the indexes of the RVs corresponding to the first data sent by the sending end is a combination which is not subjected to merging and decoding, the receiving end does not carry out merging and decoding on the first data.

For example, when the index combination of the RV corresponding to the 1 st codeword and the 2 nd codeword is 0+3, it indicates that the two codewords are merged and decoded; when the combination of the indexes of the RVs corresponding to the 1 st codeword and the 2 nd codeword is 3+0, it indicates that the two codewords are not decoded together.

It should be noted that the first possible implementation manner and the second possible implementation manner may be combined, so as to implement the indication of whether to perform data merging decoding on the time unit and the TB (or the code word or the data stream).

In addition to the method provided in the foregoing embodiment, when a plurality of first data sent by a time unit corresponds to a plurality of RVs, the sending end needs to determine which antenna ports transmit data corresponding to which RVs. In this case, the RV and the antenna port may have a correspondence relationship. For example, the indices of the RVs are mapped to small-to-large (or large-to-small) antenna ports in order from small to large; or, mapping the indexes of the RVs to DMRS ports in a DMRS group from small to large (or from large to small) in the order from small to large; or the index of the RV and the DMRS port have other preset corresponding relations; or, the corresponding relation between the RV index and the DMRS port is indicated by network equipment. Illustratively, when the RV corresponding to codeword 1 and codeword 2 transmitted on the first slot is RV0 and RV1, respectively, RV0 may correspond to the 1 st DMRS port in DMRS group 1, and RV1 may correspond to the 1 st DMRS port in DMRS group 2, that is, codeword 1 performs data demodulation using the DMRS on the 1 st DMRS port in DMRS group 1, and codeword 2 performs data demodulation using the DMRS on the 1 st DMRS port in DMRS group 2.

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

The above-mentioned scheme of the embodiment of the present application is introduced mainly from the perspective of interaction between network elements. It is understood that each network element, for example, the network device and the terminal, in order to implement the above functions, includes a corresponding hardware structure and/or software module for performing each function. Those of skill in the art would readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiment of the present application, the network device and the terminal may be divided into the functional units according to the above method examples, 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 integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit. It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation.

In the case of an integrated unit, fig. 11 shows a schematic diagram of a possible structure of the data transmission device (denoted as the data transmission device 110) in the above embodiment, where the data transmission device 110 includes a processing unit 1101, a communication unit 1102, and a storage unit 1103. The schematic structure diagram shown in fig. 11 may be used to illustrate the structure of the network device or the terminal involved in the above embodiments.

When the schematic configuration diagram shown in fig. 11 is used to illustrate the configuration of the network device according to the above embodiment, the processing unit 1101 is configured to control and manage the operation of the network device. For example, when the network device is a transmitting end, the processing unit 1101 is configured to support the network device to perform step 201, step 202, and step 204 in fig. 2. When the network device is a receiving end, the processing unit 1101 is configured 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, for example, with the terminal shown in fig. 2, through the communication unit 1102. In particular, the processing unit 1101 may control the communication unit 1102 to perform actions of transmitting and/or receiving. The storage unit 1103 is used to store program codes and data of the network device.

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

When the schematic configuration diagram shown in fig. 11 is used to illustrate the configuration of the terminal according to the above-described embodiment, the processing unit 1101 is configured to control and manage the operation of the terminal. For example, when the terminal is a transmitting end, the processing unit 1101 is configured to support the terminal to perform step 201, step 202, and step 204 in fig. 2. When the terminal is the receiving end, the processing unit 1101 is configured to support the terminal to perform step 202 to step 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, for example, with the network devices shown in fig. 2, through the communication unit 1102. In particular, the processing unit 1101 may control the communication unit 1102 to perform actions of transmitting and/or receiving. The storage unit 1103 is used to store program codes and data of the terminal.

When the schematic configuration shown in fig. 11 is used to illustrate the configuration of the terminal in the above 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, a transceiver circuit, a transceiver device, and the like, where the communication interface is generally referred to and may include one or more interfaces. The storage unit 1103 may be a memory. When the data transmission apparatus 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, a pin or a circuit, etc. The storage unit 1103 may be a storage unit (e.g., a register, a cache, etc.) inside the chip, or may be a storage unit (e.g., a read-only memory, a random access memory, etc.) outside the chip inside the terminal or the network device.

The communication unit may also be referred to as a transceiver unit. The antenna and the control circuit having a transceiving function in the data transmission apparatus 110 may be regarded as a communication unit 1102 of the data transmission apparatus 110, and the processor having a processing function may be regarded as a processing unit 1101 of the data transmission apparatus 110. Alternatively, a device in the communication unit 1102 for implementing a receiving function may be regarded as a receiving unit, where the receiving unit is configured to perform the receiving step in the embodiment of the present application, and the receiving unit may be a receiver, a receiving circuit, and the like. The device for realizing the transmission function in the communication unit 1102 may be regarded as a transmission unit for performing the steps of transmission in the embodiment of the present application, and the transmission unit may be a transmitter, a transmission circuit, or the like.

The integrated unit in fig. 11, if implemented in the form of a software functional module and sold or used as a separate product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially implemented or make a contribution to the prior art, or all or part of the technical solutions may be implemented in the form of a software product stored in a storage medium, and including several instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the methods described in the embodiments of the present application. A storage medium storing a computer software product comprising: various media capable of storing program codes, such as a usb disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

Units in the embodiments of the present application may also be referred to as modules, for example, processing units may also be referred to as processing modules.

The embodiment of the present application further provides a schematic diagram of a hardware structure of a terminal (denoted as terminal 120) and a network device (denoted as network device 130). See in particular fig. 12.

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 comprises at least one antenna 1204. Optionally, terminal 120 further includes an output device 1205 and/or an input device 1206.

The processor 1201 is configured to control and manage an operation of the terminal. For example, when the terminal is a transmitting end, the processor 1201 is configured to enable the terminal to perform step 201, step 202, and step 204 in fig. 2. When the terminal is the receiving end, the processor 1201 is configured to support the terminal to perform steps 202 to 204 in fig. 2. The processor 1201 is also configured to enable 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, such as the network devices shown in fig. 2, through the transceiver 1203. In particular, the processor 1201 may control the transceiver 1203 to perform transmit and/or receive actions. The memory 1202 is used for storing program codes and data of the terminal.

The processor 1201, the memory 1202, and the transceiver 1203 are connected by a bus. The processor 1201 may be a general processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more ics for controlling the execution of programs according to the present disclosure. The processor 1201 may also include a plurality of CPUs, and the processor 1201 may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, or processing cores that process data (e.g., computer program instructions).

The memory 1202 may be a ROM or other type of static storage device that can store static information and instructions, a RAM or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, and is not limited in this respect. The memory 1202 may be a separate memory, 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 include, among other things, computer program code. The processor 1201 is configured to execute the computer program code stored in the memory 1202, thereby implementing the methods provided by the embodiments of the present application.

The transceiver 1203 may use any transceiver or like means for communicating with other devices or communication networks, such as ethernet, RAN, W L AN, etc.

The output device 1205 is in communication with the processor 1201 and may display information in a variety of ways, for example, the output device 1205 may be a liquid crystal display (L CD), a light emitting diode (L ED) display device, a Cathode Ray Tube (CRT) display device, a projector (projector), or the like.

Optionally, the transceiver 1203 may include a transmitter 12031 and a receiver 12032. The device for implementing the receiving function in the transceiver 1203 can be regarded as a receiver 12032, and the receiver 12032 is used for executing the receiving step in the embodiment of the present application. The means for implementing the transmitting function in the transceiver 1203 may be regarded as a transmitter 12031, and the transmitter 12031 is used for executing the steps of transmitting in the embodiment of the present application.

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 comprises at least one antenna 1304.

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

The processor 1301, the memory 1302, and the transceiver 1303 are connected by a bus. The description of the processor 1301, the memory 1302 and the transceiver 1303 may refer to the description of the processor 1201, the memory 1202 and the transceiver 1203 in the terminal 120, and will not be repeated here.

Optionally, the transceiver 1303 may include a transmitter 13031 and a receiver 13032. A device for implementing the receiving function in the transceiver 1303 can be regarded as the receiver 13032, and the receiver 13032 is used for executing the receiving step in the embodiment of the present application. A device for implementing the transmitting function in the transceiver 1303 may be regarded as the transmitter 13031, and the transmitter 13031 is used to execute the transmitting step in the embodiment of the present application.

Optionally, the processor (e.g., the processor 1301 or the processor 1201) may include a baseband processor and a central processing unit, where the baseband processor is mainly used to process a communication protocol and communication data, and the central processing unit is mainly used to control the entire device, execute a software program, and process data of the software program. The processor integrates the functions of the baseband processor and the central processing unit, and those skilled in the art can understand that the baseband processor and the central processing unit can also be independent processors, and are interconnected through technologies such as a bus. The baseband processor may also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit may 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.

Embodiments of the present application also provide a computer-readable storage medium, which includes instructions that, when executed on a computer, cause 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, cause the computer to perform any of the methods described above.

The embodiment of the present application further provides an apparatus, which exists in the form of a chip product, and the apparatus includes a processor, a memory, and a transceiver module, where the transceiver module includes an input/output circuit, the memory is used to store computer execution instructions, and the processor implements any of the above methods by executing the computer execution instructions stored in the memory. In this case, an execution subject for executing the method provided by the embodiment of the present application may be a chip.

An embodiment of the present application further provides a communication system, including: the network equipment and the terminal.

The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, e.g., from one website, computer, server, or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DS L)) or wireless (e.g., infrared, wireless, microwave, etc.) manner to transmit to another website, computer, server, or data center via a wired (e.g., digital subscriber line (DS L)) or wireless (e.g., infrared, wireless, microwave, etc.) manner.

While the present application has been described in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed application, from a review of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

Although the present application has been described in conjunction with specific features and embodiments thereof, it will be evident that various modifications and combinations can be made thereto without departing from the spirit and scope of the application. Accordingly, the specification and figures are merely exemplary of the present application as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the present application. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A method of data transmission, comprising:

a sending end generates first data corresponding to each time unit in N time units, wherein each first data is generated by second data corresponding to the first data, and N is a positive integer; 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 versions RV; or, when 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 time unit in the N time units corresponds to at least two first data; or, when 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;

and the sending end sends corresponding first data to the receiving end on each time unit in the N time units.

2. The method of claim 1, wherein the first data is a data stream or a codeword.

3. The method according to claim 1 or 2, 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 at least two first data generated from the same second data corresponding to the time unit correspond to a plurality of different RVs.

4. The method according to any of claims 1-3, wherein the transmitting end is a terminal, and the method further comprises:

the sending end receives first indication information from the receiving end, wherein the first indication information is used for the sending end to determine an index of an RV corresponding to first data sent on each time unit in the N time units;

the sending end sends corresponding first data to the receiving end in each time unit of the N time units, and the sending end comprises the following steps: and the sending end sends corresponding first data to a receiving end on each time unit in the N time units based on the first indication information.

5. The method according to any of claims 1-3, wherein the sending end is a network device, and the method further comprises:

and the sending end sends first indication information to the receiving end, wherein the first indication information is used for the receiving end to determine the index of the RV corresponding to the first data received in each time unit of the N time units.

6. 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, the indexes of the S RVs satisfy a preset order, the S RVs are RVs corresponding to all first data sent by the sending end over the N time units, and S is an integer greater than N.

7. The method of claim 4 or 5, wherein the first indication information is used to indicate an index of a RV, the index of the RV corresponds to a RV sequence, and the RV sequence includes information used to indicate an index of a RV corresponding to first data transmitted in each of N time units.

8. The method according to claim 4 or 5, wherein N is 1, the N time units correspond to two first data, and the first indication information is used to indicate an index of an RV corresponding to the two first data corresponding to the N time units; the indexes of RVs corresponding to the two first data corresponding to the N time units are 0 and 2, respectively, or the indexes of RVs corresponding to the two first data corresponding to the N time units are 2 and 3, respectively, or the indexes of RVs corresponding to the two first data corresponding to the N time units are 3 and 1, respectively, or the indexes of RVs corresponding to the two first data corresponding to the N time units are 1 and 0, respectively.

9. The method according to any one of claims 1-8, further comprising:

and the sending end sends second indication information to the receiving end, wherein the second indication information is used for indicating that a plurality of first data corresponding to the same second data received in the same time unit are merged and decoded.

10. 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 a value of the downlink aggregation factor field is 1, the downlink aggregation factor field is used to indicate that multiple pieces of first data corresponding to the same second data received in the same time unit are to be merged and decoded.

11. The method of claim 9, wherein the sending end is a terminal, the second indication information is indicated by an uplink shared channel indication field and a CSI request field, and when a value of the uplink shared channel indication field is 0 and a value of the CSI request field is 1, the uplink shared channel indication field and the CSI request field are used to indicate that multiple pieces of first data corresponding to the same piece of second data received in the same time unit are to be merged and decoded.

12. The method of claim 9, wherein the second indication information indicates an index of a Modulation and Coding Scheme (MCS) and an index of a radio pressure (RV) corresponding to one first data transmitted in one time unit, and 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 indicate that a plurality of first data corresponding to the same second data received in the same time unit are jointly decoded.

13. The method according to any one of claims 1-7, wherein in case N is greater than 1, the method further comprises:

and the sending end sends third indication information to the receiving end, wherein the third indication information is used for indicating that all first data corresponding to the same second data received in M 'time units are subjected to merging decoding, and M' is an integer larger than 1.

14. 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 a 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 merged and decoded.

15. A method of data transmission, comprising:

a receiving end receives corresponding first data from a transmitting end in each time unit of N time units, wherein each first data is generated by second data corresponding to the first data, and N is a positive integer; 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 versions RV; or, when 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 time unit in the N time units corresponds to at least two first data; or, when 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 receiving end carries out merging decoding on the target first data; the target first data is first data which is received in the same time unit of the N time units and is generated by the same second data; or the target first data is first data generated by the same second data and received in M time units, where 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.

16. The method of claim 15, wherein the first data is a data stream or a codeword.

17. 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 at least two first data generated from the same second data, the at least two first data generated from the same second data corresponding to the time unit correspond to a plurality of different RVs.

18. The method according to any of claims 15-17, wherein the receiving end is a network device, the method further comprising:

and the receiving end sends first indication information to the sending end, wherein the first indication information is used for the sending end to determine the index of the RV corresponding to the first data sent on each time unit in the N time units.

19. The method according to any of claims 15-17, wherein the receiving end is a terminal, the method further comprising:

the receiving end receives first indication information from the transmitting end, wherein the first indication information is used for the receiving end to determine an index of an RV corresponding to first data received in each time unit of the N time units;

the receiving end carries out merging decoding on the target first data, and the merging decoding comprises the following steps: and the receiving end carries out merging decoding on the target first data according to the first indication information.

20. The method of claim 18 or 19, wherein the first indication information is used to indicate an index of any one of S RVs, the indexes of the S RVs satisfy a preset order, the S RVs are RVs corresponding to all first data sent by the sending end over the N time units, and S is an integer greater than N.

21. The method of claim 18 or 19, wherein the first indication information is used to indicate an index of one RV, the index of the RV corresponds to one RV sequence, and the RV sequence includes information used to indicate an index of an RV corresponding to first data transmitted in each of N time units.

22. The method according to claim 18 or 19, wherein N is 1, the N time units correspond to two first data, and the first indication information is used to indicate an index of an RV corresponding to the two first data corresponding to the N time units; the indexes of RVs corresponding to the two first data corresponding to the N time units are 0 and 2, respectively, or the indexes of RVs corresponding to the two first data corresponding to the N time units are 2 and 3, respectively, or the indexes of RVs corresponding to the two first data corresponding to the N time units are 3 and 1, respectively, or the indexes of RVs corresponding to the two first data corresponding to the N time units are 1 and 0, respectively.

23. The method according to any one of claims 15-22, further comprising:

the receiving end receives second indication information from the sending end, wherein the second indication information is used for indicating that a plurality of first data corresponding to the same second data received in the same time unit are merged and decoded;

the receiving end carries out merging decoding on the target first data, and the merging decoding comprises the following steps: and the receiving end carries out merging and decoding on the target first data according to the second indication information, wherein the target first data is first data which is received in the same time unit of the N time units and is generated by the same second data.

24. 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 factor field is used to indicate that multiple pieces of first data corresponding to the same second data received in the same time unit are to be merged and decoded.

25. The method of claim 23, wherein the receiver is a network device, the second indication information is indicated by an uplink shared channel indication field and a CSI request field, and when a value of the uplink shared channel indication field is 0 and a value of the CSI request field is 1, the uplink shared channel indication field and the CSI request field are used to indicate that multiple pieces of first data corresponding to the same second data received in the same time unit are to be merged and decoded.

26. The method of claim 23, wherein the second indication information indicates an index of a Modulation and Coding Scheme (MCS) and an index of a radio pressure (RV) corresponding to one first data transmitted in one time unit, and 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 indicate that a plurality of first data corresponding to the same second data received in the same time unit are jointly decoded.

27. The method according to any one of claims 15-21, wherein in case N is greater than 1, the method further comprises:

the receiving end receives third indication information from the sending end, the third indication information is used for indicating that all first data corresponding to the same second data received in M 'time units are subjected to merging decoding, and M' is an integer greater than or equal to M;

the receiving end carries out merging decoding on the target first data, and the merging decoding comprises the following steps: and the receiving end carries out merging decoding on target first data according to the third indication information, wherein the target first data are all first data which are received on M time units and are generated by the same second data.

28. The method of claim 27, wherein the receiving end is a terminal, the third indication information is indicated by a downlink aggregation factor field, and when a value of the downlink aggregation factor field is M ', the downlink aggregation factor field is used to indicate to merge and decode all first data corresponding to the same second data received in M' time units.

29. A data transmission apparatus, comprising: a processing unit and a communication unit;

the processing unit is used for generating first data corresponding to each time unit in N time units, each first data is generated by second data corresponding to the first data, and N is a positive integer; 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 versions RV; or, when 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 time unit in the N time units corresponds to at least two first data; or, when 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 communication unit is configured to send corresponding first data to a receiving end in each of the N time units.

30. The apparatus of claim 29, wherein the first data is a data stream or a codeword.

31. The apparatus of 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 at least two first data generated from the same second data for the time unit correspond to a plurality of different RVs.

32. The apparatus according to any of claims 29-31, wherein the data transmission apparatus is a terminal,

the communication unit is further configured to receive, from the receiving end, first indication information, where the first indication information is used by the apparatus to determine an index of an RV corresponding to first data transmitted in each of the N time units;

the communication unit is further configured to send corresponding first data to a receiving end in each of the N time units based on the first indication information.

33. The apparatus according to any of claims 29-31, wherein the data transmission apparatus 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 for the receiving end to determine an index of an RV corresponding to first data received in each time unit of the N time units.

34. The apparatus of claim 32 or 33, wherein the first indication information is used to indicate an index of any one of S RVs, the indexes of S RVs satisfy a preset order, the S RVs are RVs corresponding to all first data sent by the data transmission apparatus over the N time units, and S is an integer greater than N.

35. The apparatus of claim 32 or 33, wherein the first indication information is used to indicate an index of a RV, the index of the RV corresponds to a RV sequence, and the RV sequence includes information indicating an index of a RV corresponding to first data transmitted in each of N time units.

36. The apparatus according to claim 32 or 33, wherein N is 1, the N time units correspond to two first data, and the first indication information is used to indicate an index of an RV corresponding to the two first data corresponding to the N time units; the indexes of RVs corresponding to the two first data corresponding to the N time units are 0 and 2, respectively, or the indexes of RVs corresponding to the two first data corresponding to the N time units are 2 and 3, respectively, or the indexes of RVs corresponding to the two first data corresponding to the N time units are 3 and 1, respectively, or the indexes of RVs corresponding to the two first data corresponding to the N time units are 1 and 0, respectively.

37. The apparatus of any one of claims 29-36,

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 multiple pieces of first data corresponding to the same piece of second data received in the same time unit are merged and decoded.

38. The apparatus according to claim 37, wherein the data transmission apparatus 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 aggregation factor field is used to indicate that multiple pieces of first data corresponding to the same second data received in the same time unit are to be decoded in a combining manner.

39. The apparatus of claim 37, wherein the data transmission apparatus is a terminal, the second indication information is indicated by an uplink shared channel indication field and a CSI request field, and when a value of the uplink shared channel indication field is 0 and a value of the CSI request field is 1, the uplink shared channel indication field and the CSI request field are used to indicate that multiple pieces of first data corresponding to the same second data received in the same time unit are to be decoded in a combining manner.

40. The apparatus of claim 37, wherein the second indication information indicates an index of a Modulation and Coding Scheme (MCS) and an index of a radio pressure (RV) corresponding to one first data transmitted in one time unit, and wherein 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 indicate to perform joint decoding on a plurality of first data corresponding to the same second data received in the same time unit.

41. The apparatus of any one of claims 29-35, wherein, in the case where 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 that all first data corresponding to the same second data received in M 'time units are merged and decoded, and M' is an integer greater than 1.

42. The apparatus according to claim 41, wherein 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 decoded in a combining manner.

43. A data transmission apparatus, comprising: a processing unit and a communication unit;

the communication unit is configured to receive corresponding first data from a sending end in each of N time units, where each first data is generated from second data corresponding to the first data, and N is a positive integer; 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 versions RV; or, when 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 time unit in the N time units corresponds to at least two first data; or, when 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 for carrying out merging decoding on the target first data; the target first data is first data which is received in the same time unit of the N time units and is generated by the same second data; or the target first data is first data generated by the same second data and received in M time units, where 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.

44. The apparatus of claim 43, wherein the first data is a data stream or a codeword.

45. The apparatus of claim 43 or 44, wherein N is greater than 1, and for any time unit of the N time units corresponding to at least two first data generated from the same second data, the at least two first data generated from the same second data for the time unit correspond to a plurality of different RVs.

46. The apparatus according to any of claims 43-45, wherein the data transmission apparatus 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 an index of an RV corresponding to first data sent in each time unit of the N time units.

47. The apparatus according to any of claims 43-45, wherein the data transmission apparatus is a terminal;

the communication unit is further configured to receive first indication information from the sending end, where the first indication information is used by the data transmission apparatus to determine an index of an RV corresponding to first data received in each of the N time units;

the processing unit is specifically configured to perform merging decoding on the target first data according to the first indication information.

48. The apparatus of claim 46 or 47, wherein the first indication information is used to indicate an index of any one of S RVs, the indexes of S RVs satisfy a preset order, the S RVs are RVs corresponding to all first data sent by the sending end in the N time units, and S is an integer greater than N.

49. The apparatus of claim 46 or 47, wherein the first indication information is used to indicate an index of a RV, the index of the RV corresponds to a RV sequence, and the RV sequence comprises information used to indicate the index of the RV corresponding to the first data transmitted in each of N time units.

50. The apparatus according to claim 46 or 47, wherein N is 1, the N time units correspond to two first data, and the first indication information is used to indicate an index of an RV corresponding to the two first data corresponding to the N time units; the indexes of RVs corresponding to the two first data corresponding to the N time units are 0 and 2, respectively, or the indexes of RVs corresponding to the two first data corresponding to the N time units are 2 and 3, respectively, or the indexes of RVs corresponding to the two first data corresponding to the N time units are 3 and 1, respectively, or the indexes of RVs corresponding to the two first data corresponding to the N time units are 1 and 0, respectively.

51. The apparatus of any one of claims 43-50,

the communication unit is further configured to receive second indication information from the sending end, where the second indication information is used to indicate that multiple pieces of first data corresponding to the same piece of second data received in the same time unit are merged and decoded;

the processing unit is specifically configured to perform merging and decoding on the target first data according to the second indication information, where the target first data is first data generated by the same second data and received in the same time unit of the N time units.

52. The apparatus according to claim 51, wherein the data transmission apparatus 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 factor field is used to indicate that multiple pieces of first data corresponding to the same second data received in the same time unit are to be decoded in a merged manner.

53. The apparatus of claim 51, wherein the data transmission apparatus is a network device, the second indication information is indicated by an uplink shared channel indication field and a Channel State Information (CSI) request field, and when a value of the uplink shared channel indication field is 0 and a value of the CSI request field is 1, the uplink shared channel indication field and the CSI request field are used to indicate that multiple pieces of first data corresponding to the same second data received in the same time unit are subjected to merging decoding.

54. The apparatus of claim 51, wherein the second indication information indicates an index of a Modulation and Coding Scheme (MCS) and an index of a radio pressure (RV) corresponding to one first data transmitted in one time unit, and wherein 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 indicate to perform joint decoding on a plurality of first data corresponding to one and the same second data received in the same time unit.

55. The apparatus of any one of claims 43-49, wherein, in the case that N is greater than 1,

the communication unit is further configured to receive third indication information from the sending end, where the third indication information is used to indicate that all first data corresponding to the same second data received in M 'time units are merged and decoded, and M' is an integer greater than or equal to M;

the processing unit is specifically configured to perform merging and decoding on target first data according to the third indication information, where the target first data is all first data generated by the same second data and received in M time units.

56. The apparatus according to claim 55, wherein the data transmission apparatus 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 aggregation factor field is used to indicate that all first data corresponding to the same second data received in M' time units are subjected to merging decoding.

57. A data transmission apparatus, comprising: a memory and a processor;

the memory for storing computer-executable instructions, the processor executing the computer-executable instructions stored by the memory to cause the data transmission apparatus to implement the method of any one of claims 1-14; or, implementing a method according to any of claims 15-28.

58. A data transmission apparatus, comprising: a processor and a communication interface;

the communication interface is for inputting and/or outputting signals, the processor is for causing the data transmission apparatus to implement the method of any one of claims 1-14; or, implementing a method according to any of claims 15-28.

59. A computer-readable storage medium comprising instructions that, when executed on a computer, cause the computer to perform the method of any one of claims 1-14; or, performing the method of any one of claims 15-28.