Information transmission method and apparatus
The disclosure provides an information transmission method and apparatus. The method includes: carrying a first parameter in physical layer signaling corresponding to a Physical Downlink Shared Channel (PDSCH); and transmitting, according to an indication of the first parameter, a Hybrid Automatic Repeat Request Acknowledgment (HARQ-ACK) corresponding to the PDSCH, which may be specifically identifying an indication meaning of the current first parameter on a predetermined basis and selecting which positions are used to transmit the HARQ-ACK. By adopting the above solution, a first communication node itself sets a position at which an HARQ-ACK is transmitted, and a second communication node feeds back, according to an indication, the HARQ-ACK corresponding to a PDSCH in time, thereby solving the problem of greater delay for HARQ-ACK feedback in the related art, and ensuring the low delay processing of a service.
1. An information transmission method, comprising:
receiving Downlink Control Information (DCI) corresponding to a Physical Downlink Shared Channel (PDSCH), wherein the DCI carries a first parameter, k1 and Physical Resource Indicator (PRI); and
transmitting, according to an indication of the first parameter, a Hybrid Automatic Repeat Request Acknowledgment (HARQ-ACK) corresponding to the PDSCH;
wherein transmitting, according to the indication of the first parameter, the HARQ-ACK corresponding to the PDSCH comprises:
receiving DCIs scheduling one or more PDSCHs, acquiring one uplink unit for transmitting the HARQ-ACK corresponding to the one or more PDSCHs according to the k1 carried in the DCIs, and determining which of the HARQ-ACKs of the one or more PDSCHs belong to one HARQ-ACK codebook according to the indication of the first parameter carried in the DCIs and determining a PUCCH resource corresponding to the HARQ-ACK codebook according to the PRI carried in the DCIs;
wherein the first parameter is used for indicating a HARQ-ACK codebook to which a HARQ-ACK corresponding to a PDSCH belongs;
wherein the k1 is used for indicating a uplink unit for transmitting a HARQ-ACK corresponding to a PDSCH, comprising: in a case where the PDSCH is received in a unit n, the HARQ-ACK corresponding to the PDSCH is transmitted in a unit n+k1;
wherein the PRI is used for indicating a PUCCH resource corresponding to a HARQ-ACK corresponding to a PDSCH;
wherein a PUCCH resource corresponding to a HARQ-ACK codebook is determined according to the indication of the PRI in the last DCI corresponding to the HARQ-ACK codebook.
2. The method according to claim 1 , wherein transmitting, according to the indication of the first parameter, the HARQ-ACK corresponding to the PDSCH comprises:
determining, according to the indication of the first parameter, at least one of the following: determining a Physical Uplink Control Channel (PUCCH) corresponding to a HARQ-ACK codebook in an uplink unit; and determining a corresponding PUCCH of each HARQ-ACK corresponding to the PDSCH in an uplink unit; and
transmitting the HARQ-ACK corresponding to the PDSCH or transmitting the HARQ-ACK codebook on the PUCCH.
3. The method according to claim 1 , wherein
the first parameter is used for indicating at least one of the following information:
when the first parameter is a first numerical value, the first parameter is used for indicating that a PUCCH indicated by corresponding DCI is a first type of PUCCH, and when the first parameter is a second numerical value, the first parameter is used for indicating that a PUCCH indicated by corresponding DCI is a non-first type of PUCCH
when the first parameter is a first numerical value, the first parameter is used for indicating that a HARQ-ACK of a PDSCH corresponding to corresponding DCI is the last HARQ-ACK of a HARQ-ACK codebook, and when the first parameter is a second numerical value, the first parameter is used for indicating that a HARQ-ACK of a PDSCH corresponding to corresponding DCI is not the last HARQ-ACK of a HARQ-ACK codebook, wherein the HARQ-ACK codebook is transmitted on a PUCCH indicated by the last DCI in the DCI corresponding to the HARQ-ACK codebook;
when the first parameter is a first numerical value, the first parameter is used for indicating that corresponding DCI is DCI of the last PDSCH in a PDSCH corresponding to a HARQ-ACK codebook, and when the first parameter is a second numerical value, the first parameter is used for indicating that corresponding DCI is not DCI of the last PDSCH in a PDSCH corresponding to a HARQ-ACK codebook, wherein the HARQ-ACK codebook is transmitted on a PUCCH indicated by the last DCI in the DCI corresponding to the HARQ-ACK codebook;
when the first parameter is a first numerical value, the first parameter is used for indicating that one or more HARQ-ACKs to be transmitted prior to a HARQ-ACK of a PDSCH corresponding to current DCI is fed back in a HARQ-ACK codebook, the HARQ-ACK codebook is transmitted on the PUCCH indicated by the DCI received currently; and
in response to the current DCI scheduling the PDSCH, the HARQ-ACK of the PDSCH scheduled by the current DCI is multiplexed with the one or more HARQ-ACKs to be transmitted previously in one HARQ-ACK codebook, and the HARQ-ACK codebook is transmitted on the PUCCH resource indicated by the current DCI.
4. The method according to claim 1 , wherein
transmitting, according to an indication of the first parameter, a HARQ-ACK corresponding to the PDSCH comprises:
selecting a Physical Uplink Control Channel (PUCCH) indicated by DCI with a first parameter which is a first numerical value as a second type of PUCCH, and transmitting a HARQ-ACK codebook in the second type of PUCCH, wherein the HARQ-ACK codebook comprises one or more HARQ-ACKs, and the HARQ-ACK codebook comprises all HARQ-ACKs to be transmitted between a current second type of PUCCH and a previous second type of PUCCH.
5. The method according to claim 4 , wherein the HARQ-ACK comprises at least one of the following:
A HARQ-ACK of a PDSCH scheduled by DCI, a HARQ-ACK of a Semi-Persistent Scheduling (SPS) PDCCH, and a HARQ-ACK of SPS PDSCH without DCI scheduling.
6. The method according to claim 1 , wherein transmitting, according to the indication of the first parameter, the HARQ-ACK corresponding to the PDSCH comprises:
determining, according to the indication of the first parameter, until the HARQ-ACK of the PDSCH corresponding to the DCI currently received, the HARQ-ACKs of the PDSCHs corresponding to the previously received DCIs are fed back in an HARQ-ACK codebook; and
transmitting the HARQ-ACK codebook on the PUCCH indicated by the DCI received currently.
7. The method according to claim 1 , wherein
transmitting, according to an indication of the first parameter, a HARQ-ACK corresponding to the PDSCH comprises:
when detecting that first parameters of all received DCI are second numerical values before a preset number of symbols ahead of a PUCCH in an uplink unit, taking a PUCCH indicated by the last DCI in all DCI as a second type of PUCCH, and transmitting a HARQ-ACK codebook in the second type of PUCCH, wherein the HARQ-ACK codebook comprises all HARQ-ACKs to be transmitted between a current second type of PUCCH and a previous second type of PUCCH.
8. The method according to claim 1 , wherein
transmitting, according to an indication of the first parameter, a HARQ-ACK corresponding to the PDSCH comprises:
when detecting that a first parameter corresponding to first DCI is different from a first parameter of previous DCI, determining that a PUCCH indicated by the first DCI is a second type of PUCCH, and transmitting a HARQ-ACK codebook in the second type of PUCCH, wherein the HARQ-ACK codebook comprises a HARQ-ACK to be transmitted between a current second type of PUCCH and a previous second type of PUCCH.
9. The method according to claim 8 , wherein the HARQ-ACK comprises at least one of the following:
A HARQ-ACK of a PDSCH scheduled by DCI, a HARQ-ACK of a Semi-Persistent Scheduling (SPS) PDCCH, and a HARQ-ACK of SPS PDSCH without DCI scheduling.
10. The method according to claim 1 , wherein
transmitting, according to an indication of the first parameter, a HARQ-ACK corresponding to the PDSCH comprises:
when detecting that first parameters corresponding to all DCI received before a preset number of symbols ahead of a PUCCH in the uplink unit are the same, taking a PUCCH indicated by the last DCI in all DCI as a second type of PUCCH, and transmitting a HARQ-ACK codebook in the second type of PUCCH, wherein the HARQ-ACK codebook comprises all HARQ-ACKs to be transmitted between a current second type of PUCCH and a previous second type of PUCCH.
11. The method according to claim 10 , wherein the HARQ-ACK comprises at least one of the following:
A HARQ-ACK of a PDSCH scheduled by DCI, a HARQ-ACK of a Semi-Persistent Scheduling (SPS) PDCCH, and a HARQ-ACK of SPS PDSCH without DCI scheduling.
12. The method according to claim 1 , wherein the HARQ-ACK comprises at least one of the following:
A HARQ-ACK of a PDSCH scheduled by DCI, a HARQ-ACK of a Semi-Persistent Scheduling (SPS) PDCCH, and a HARQ-ACK of SPS PDSCH without DCI scheduling.
13. An information transmission method, comprising:
transmitting DCI corresponding to a Physical Downlink Shared Channel (PDSCH) to a second communication node, wherein the DCI carries a first parameter, k1 and Physical Resource Indicator (PRI), for indicating the second communication node to select a first type of Physical Uplink Control Channel (PUCCH), and the first type of PUCCH is used for transmitting a Hybrid Automatic Repeat Request Acknowledgment (HARQ-ACK) corresponding to the PDSCH;
wherein the second communication node transmits the HARQ-ACK corresponding to the PDSCH according to the indication of the first parameter, comprises:
receiving DCIs scheduling one or more PDSCHs, acquiring one uplink unit for transmitting the HARQ-ACK corresponding to the one or more PDSCHs according to the k1 carried in the DCIs, and determining which of the HARQ-ACKs of the one or more PDSCHs belong to one HARQ-ACK codebook according to the indication of the first parameter carried in the DCIs and determining a PUCCH resource corresponding to the HARQ-ACK codebook according to the PRI carried in the DCIs;
wherein the first parameter is used for indicating a HARQ-ACK codebook to which a HARQ-ACK corresponding to a PDSCH belongs;
wherein the k1 is used for indicating a uplink unit for transmitting a HARQ-ACK corresponding to a PDSCH, comprising: in a case where the PDSCH is transmitted in a unit n, the HARQ-ACK corresponding to the PDSCH is transmitted in a unit n+k1;
wherein the PRI is used for indicating a PUCCH resource corresponding to a HARQ-ACK corresponding to a PDSCH;
wherein the PUCCH resource corresponding to a HARQ-ACK codebook is determined according to the indication of the PRI in the last DCI corresponding to the HARQ-ACK codebook.
14. An information transmission apparatus, comprising a memory storing instructions and a processor in communication with the memory, wherein the processor is configured to execute the method recited in claim 13 .
15. An information transmission apparatus, comprising a memory storing instructions and a processor in communication with the memory, wherein the processor is configured to execute the instructions to:
receive, Downlink Control Information (DCI) corresponding to a Physical Downlink Shared Channel (PDSCH), wherein the DCI carries a first parameter, k1 and Physical Resource Indicator (PRI); and
transmit, according to an indication of the first parameter, a Hybrid Automatic Repeat Request Acknowledgment (HARQ-ACK) corresponding to the PDSCH;
wherein transmit, according to the indication of the first parameter, the HARQ-ACK corresponding to the PDSCH comprises:
receive DCIs scheduling one or more PDSCHs, acquire one uplink unit for transmitting the HARQ-ACK corresponding to the one or more PDSCHs according to the k1 carried in the DCIs, and determine which of the HARQ-ACKs of the one or more PDSCHs belong to one HARQ-ACK codebook according to the indication of the first parameter carried in the DCIs and determine a PUCCH resource corresponding to the HARQ-ACK codebook according to the PRI carried in the DCIs;
wherein the first parameter is used for indicating a HARQ-ACK codebook to which a HARQ-ACK corresponding to a PDSCH belongs;
wherein the k1 is used for indicating a uplink unit for transmitting a HARQ-ACK corresponding to a PDSCH, comprising: in a case where the PDSCH is received in a unit n, the HARQ-ACK corresponding to the PDSCH is transmitted in a unit n+k1;
wherein the PRI is used for indicating a PUCCH resource corresponding to a HARQ-ACK corresponding to a PDSCH;
wherein a PUCCH resource corresponding to a HARQ-ACK codebook is determined according to the indication of the PRI in the last DCI corresponding to the HARQ-ACK codebook.
16. The apparatus according to claim 15 , wherein the processor, when configured to transmit, according to the indication of the first parameter, the HARQ-ACK corresponding to the PDSCH, is configured to:
determine, according to the indication of the first parameter, at least one of the following: determining a Physical Uplink Control Channel (PUCCH) corresponding to a HARQ-ACK codebook in an uplink unit; and determining a corresponding PUCCH of each HARQ-ACK corresponding to the PDSCH in an uplink unit; and
transmit the HARQ-ACK corresponding to the PDSCH or transmitting the HARQ-ACK codebook on the PUCCH.
17. The apparatus according to claim 15 , wherein the processor, when configured to transmit, according to the indication of the first parameter, the HARQ-ACK corresponding to the PDSCH, is configured to:
determine, according to the indication of the first parameter, an ACK/NACK of a PDSCH corresponding to DCI received before is fed back in a HARQ-ACK codebook until an ACK/NACK of a PDSCH corresponding to DCI received currently; and
transmit the HARQ-ACK codebook on the PUCCH indicated by the DCI received currently.
18. The apparatus according to claim 15 , wherein
the first parameter is used for indicating at least one of the following information:
when the first parameter is a first numerical value, the first parameter is used for indicating that a PUCCH indicated by corresponding DCI is a first type of PUCCH, and when the first parameter is a second numerical value, the first parameter is used for indicating that a PUCCH indicated by corresponding DCI is a non-first type of PUCCH
when the first parameter is a first numerical value, the first parameter is used for indicating that a HARQ-ACK of a PDSCH corresponding to corresponding DCI is the last HARQ-ACK of a HARQ-ACK codebook, and when the first parameter is a second numerical value, the first parameter is used for indicating that a HARQ-ACK of a PDSCH corresponding to corresponding DCI is not the last HARQ-ACK of a HARQ-ACK codebook, wherein the HARQ-ACK codebook is transmitted on a PUCCH indicated by the last DCI in the DCI corresponding to the HARQ-ACK codebook;
when the first parameter is a first numerical value, the first parameter is used for indicating that corresponding DCI is DCI of the last PDSCH in a PDSCH corresponding to a HARQ-ACK codebook, and when the first parameter is a second numerical value, the first parameter is used for indicating that corresponding DCI is not DCI of the last PDSCH in a PDSCH corresponding to a HARQ-ACK codebook, wherein the HARQ-ACK codebook is transmitted on a PUCCH indicated by the last DCI in the DCI corresponding to the HARQ-ACK codebook;
when the first parameter is a first numerical value, the first parameter is used for indicating that one or more HARQ-ACKs to be transmitted prior to a HARQ-ACK of a PDSCH corresponding to current DCI is feed back in a HARQ-ACK codebook, the HARQ-ACK codebook is transmitted on the PUCCH indicated by the DCI received currently; and
in response to the current DCI scheduling state of the PDSCH, the HARQ-ACK of the PDSCH scheduled by the current DCI is multiplexed with the HARQ-ACK to be transmitted previously in one HARQ-ACK codebook, and the HARQ-ACK codebook is transmitted on the PUCCH resource indicated by the current DCI.