Data transmission method and apparatus, and storage medium
Provided are a data transmission method and apparatus, and a storage medium. The method includes: sending downlink control information (DCI) to a second communication node, where the DCI is configured for indicating one or more Hybrid Automatic Repeat reQuest (HARQ) offset values.
1. A data transmission method, applied to a first communication node, comprising:
sending downlink control information (DCI) to a second communication node, wherein the DCI is configured for indicating at least one Hybrid Automatic Repeat reQuest (HARQ) offset value;
wherein a feedback slot corresponding to the configured at least one HARQ offset value satisfies the following conditions: an interval between a first feedback slot and a transmission slot of a first PDSCH repetition transmission in a plurality of PDSCH repetition transmissions being greater than or equal to a PDSCH processing delay; and
wherein the first feedback slot being at least after the second communication node receives M PDSCHs, wherein M=┌N/2┐ or M=└N/2┘, and N is a total number of the PDSCH repetition transmissions.
2. The method according to claim 1 , wherein the sending the DCI to the second communication node comprises:
configuring X groups of HARQ offset values by higher-layer signaling and selecting one group of HARQ offset values from the configured X groups of HARQ offset values by using the DCI, wherein each of the X groups of HARQ offset values comprises at least one HARQ offset value, and X is an integer greater than or equal to 1.
3. The method according to claim 1 , wherein the sending the DCI to the second communication node comprises:
configuring N groups of HARQ offset values by higher-layer signaling and selecting one HARQ offset value from each of the configured N groups of HARQ offset values by using the DCI, wherein each of the N groups of HARQ offset values comprises at least one HARQ offset value, and N is an integer greater than or equal to 1.
4. The method according to claim 1 , wherein a reference point of the at least one HARQ offset value is selected in one of the following manners: a slot where a last physical downlink shared channel (PDSCH) in a plurality of PDSCH repetition transmissions is located; a slot where a first PDSCH in a plurality of PDSCH repetition transmissions is located; or a slot where an intermediate PDSCH in a plurality of PDSCH repetition transmissions is located.
5. The method according to claim 1 , further comprising: in a case where an acknowledgement (ACK) fed back by the second communication node is received, notifying the second communication node to no longer feed back an HARQ acknowledgement (HARQ-ACK) corresponding to a repeatedly transmitted PDSCH in another slot after a slot where the received ACK is located.
6. The method according to claim 1 , wherein the first communication node is a master communication node among a plurality of first-type communication nodes;
the method further comprises: in a case where the master communication node among the plurality of first-type communication nodes receives an ACK fed back by the second communication node, the master communication node immediately stops sending a repeatedly transmitted PDSCH;
in a case where the master communication node among the plurality of first-type communication nodes receives the ACK fed back by the second communication node, a data sending situation of other first-type communication nodes except the master communication node comprises one of the following:
in a case where the other first-type communication nodes have sent data, the master communication node notifies the other first-type communication nodes to stop sending remaining repeatedly transmitted PDSCHs; or
in a case where the other first-type communication nodes have not sent data, the master communication node notifies the other first-type communication nodes that the data does not need to be sent.
7. The method according to claim 5 , wherein the method further comprises that a time interval between two PDSCH repetition transmissions being greater than or equal to L, wherein L is configured by a higher-layer parameter.
8. The method according to claim 1 , further comprising:
in a case where uplink data is repeatedly sent, configuring a plurality of different beams for the second communication node.
9. The method according to claim 8 , wherein the plurality of different beams are configured in one of the following manners: the plurality of different beams are activated by a medium access control-control element (MAC-CE); or a plurality of physical uplink control channel (PUCCH) resource groups are configured, wherein each of the plurality of PUCCH resource groups corresponds to one spatial relationship.
10. The method according to claim 9 , wherein the plurality of different beams comprises a first beam and a second beam; wherein the first beam corresponds to a first group of PUCCHs, and the second beam corresponds to a second group of PUCCHs;
wherein the first group of PUCCHs is transmitted using the first beam, and the second group of PUCCHs is transmitted using the second beam.
11. The method according to claim 10 , wherein the first group of PUCCHs and the second group of PUCCHs are determined in at least one of the following manners:
the first group of PUCCHs comprises PUCCHs whose transmission slots are less than or equal to K in a plurality of PUCCH repetition transmissions, and the second group of PUCCHs comprises PUCCHs whose transmission slots are greater than K in the plurality of PUCCH repetition transmissions, wherein K is a positive integer;
the first group of PUCCHs comprises PUCCHs whose transmission slots are even-numbered in a plurality of PUCCH repetition transmissions, and the second group of PUCCHs comprises PUCCHs whose transmission slots are odd-numbered in the plurality of PUCCH repetition transmissions; or
with reference to grouping of transmission control indicators (TCIs) of PDSCHs, four PUCCH repetition transmissions are used as a transmission unit, and eight PUCCH repetition transmissions correspond to a splice of two transmission units.
12. The method according to claim 11 , wherein the PUCCH repetition transmissions are associated with a TCI state in one of the following manners: in a case where a physical downlink control channel (PDCCH) indicates one TCI state, the PUCCH repetition transmissions use a single-beam configuration; or in a case where a PDCCH indicates two TCI states, the PUCCH repetition transmissions use a multi-beam configuration.
13. A data transmission method, applied to a second communication node, comprising:
receiving downlink control information (DCI) sent by a first communication node, wherein the DCI is configured for indicating at least one Hybrid Automatic Repeat reQuest (HARQ) offset value;
wherein a feedback slot corresponding to the configured at least one HARQ offset value satisfies the following conditions: an interval between a first feedback slot and a transmission slot of a first PDSCH repetition transmission in a plurality of PDSCH repetition transmissions being greater than or equal to a PDSCH processing delay; and
wherein the first feedback slot being at least after the second communication node receives M PDSCHs, wherein M=┌N/2┐ or M=└N/2┘, and N is a total number of the PDSCH repetition transmissions.
14. The method according to claim 13 , further comprising: in a case where an acknowledgement (ACK) is fed back to the first communication node at a first occasion, no longer feeding back an HARQ acknowledgement (HARQ-ACK) at a second occasion and no longer receiving remaining downlink data.
15. The method according to claim 13 , further comprising:
in a case where uplink data is repeatedly sent, repeatedly sending the uplink data using different beam configurations.
16. A data transmission apparatus, applied to a first communication node, comprising:
at least one processor and a memory, wherein the memory stores a computer program, and the at least one processor is configured to execute the computer program to implement the method of claim 1 .
17. A data transmission apparatus, applied to a second communication node, comprising:
at least one processor and a memory, wherein the memory stores a computer program, and the at least one processor is configured to execute the computer program to implement the method of claim 13 .
18. A non-transitory storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the data transmission method according to claim 1 .