Method for determining hybrid automatic repeat request-acknowledgment (HARQ-ACK) resource
This application provides methods and apparatuses for determining a hybrid automatic repeat request-acknowledgment (HARQ-ACK) resource. One method includes: determining at least one physical downlink control channel (PDCCH) monitoring occasion, wherein HARQ-ACK feedback bits scheduled by using downlink control information (DCI) monitored on the at least one PDCCH monitoring occasion are carried on a same physical uplink control channel (PUCCH) resource; and determining, based on index values of a control-resource set group corresponding to first DCI, target DCI indicating the PUCCH resource, wherein the first DCI is on a last PDCCH monitoring occasion in the at least one PDCCH monitoring occasion, and wherein the control-resource set group comprises one or more control-resource sets.
1 . A method for determining a hybrid automatic repeat request-acknowledgment (HARQ-ACK) resource performed by a terminal device or a chip of the terminal device, comprising:
determining, based on downlink control information (DCI) monitored on a plurality of physical downlink control channel (PDCCH) monitoring occasions, at least one PDCCH monitoring occasion from the plurality of PDCCH monitoring occasions, wherein HARQ-ACK feedback bits scheduled by using DCI monitored on the at least one PDCCH monitoring occasion are carried on a same physical uplink control channel (PUCCH) resource; and
determining target DCI indicating the PUCCH resource, wherein the target DCI corresponds to a largest one of index values of a control-resource set group corresponding to first DCI, wherein a plurality of carriers are on a last PDCCH monitoring occasion in the at least one PDCCH monitoring occasion, wherein the first DCI is on a carrier having a largest carrier number of the plurality of carriers, wherein the last PDCCH monitoring occasion in the at least one PDCCH monitoring occasion is a PDCCH monitoring occasion with a largest index, and wherein the control-resource set group comprises one or more control-resource sets.
2 . The method according to claim 1 , wherein the method further comprises:
determining, based on a downlink assignment index (DAI) value indicated by the target DCI, a quantity of the HARQ-ACK feedback bits carried on the same PUCCH resource.
3 . The method according to claim 2 , wherein determining the quantity of the HARQ-ACK feedback bits carried on the same PUCCH resource comprises:
increasing a buffer value by 1 when the DAI value indicated by the target DCI is less than a DAI value indicated by second DCI on the last PDCCH monitoring occasion, wherein
the second DCI corresponds to an index value of the control-resource set group that is different from the index value that corresponds to the target DCI; and
determining, based on a sum of the buffer value and the DAI value, the quantity of the HARQ-ACK feedback bits carried on the PUCCH resource.
4 . The method according to claim 1 , wherein the DCI monitored on the at least one PDCCH monitoring occasion is carried on a plurality of carriers, and the target DCI is carried on a carrier having a largest carrier number in the plurality of carriers, or the target DCI is carried on a carrier having a smallest carrier number in the plurality of carriers.
5 . The method according to claim 4 , wherein at least one of the plurality of carriers comprises at least two control-resource set groups.
6 . An apparatus for determining a hybrid automatic repeat request-acknowledgment (HARQ-ACK) resource, comprising: at least one processor, and one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to perform operations comprising:
determining, based on downlink control information (DCI) monitored on a plurality of physical downlink control channel (PDCCH) monitoring occasions, at least one PDCCH monitoring occasion from the plurality of PDCCH monitoring occasions, wherein HARQ-ACK feedback bits scheduled by using DCI monitored on the at least one PDCCH monitoring occasion are carried on a same physical uplink control channel (PUCCH) resource; and
determining target DCI indicating the PUCCH resource, wherein the target DCI corresponds to a largest one of index values of a control-resource set group corresponding to first DCI, wherein a plurality of carriers are on a last PDCCH monitoring occasion in the at least one PDCCH monitoring occasion, wherein the first DCI is on a carrier having a largest carrier number of the plurality of carriers, wherein the last PDCCH monitoring occasion in the at least one PDCCH monitoring occasion is a PDCCH monitoring occasion with a largest index, and wherein the control-resource set group comprises one or more control-resource sets.
7 . The apparatus according to claim 6 , wherein the operations comprises:
determine, based on a DAI value indicated by the target DCI, a quantity of the HARQ-ACK feedback bits carried on the same PUCCH resource.
8 . The apparatus according to claim 7 , wherein the operations comprises:
increasing a buffer value by 1 when the DAI value indicated by the target DCI is less than a DAI value indicated by second DCI on the last PDCCH monitoring occasion, wherein:
the second DCI corresponds to an index value of the control-resource set group that is different from the index value that corresponds to the target DCI; and
determining, based on a sum of the buffer value and the DAI value, the quantity of the HARQ-ACK feedback bits carried on the PUCCH resource.
9 . The apparatus according to claim 8 , wherein the DCI monitored on the at least one PDCCH monitoring occasion is carried on a plurality of carriers, and the target DCI is carried on a carrier having a largest carrier number in the plurality of carriers, or the target DCI is carried on a carrier having a smallest carrier number in the plurality of carriers.
10 . The apparatus according to claim 9 , wherein at least one of the plurality of carriers comprises at least two control-resource set groups.
11 . The apparatus according to claim 6 , wherein the apparatus is a terminal device or a chip.
12 . A non-transitory computer-readable storage medium storing one or more instructions executable by at least one processor to perform operations comprising:
determining, based on downlink control information (DCI) monitored on a plurality of physical downlink control channel (PDCCH) monitoring occasions, at least one PDCCH monitoring occasion from the plurality of PDCCH monitoring occasions, wherein HARQ-ACK feedback bits scheduled by using DCI monitored on the at least one PDCCH monitoring occasion are carried on a same physical uplink control channel (PUCCH) resource; and
determining target DCI indicating the PUCCH resource, wherein the target DCI corresponds to a largest one of index values of a control-resource set group corresponding to first DCI, wherein a plurality of carriers are on a last PDCCH monitoring occasion in the at least one PDCCH monitoring occasion, wherein the first DCI is on a carrier having a largest carrier number of the plurality of carriers, wherein the last PDCCH monitoring occasion in the at least one PDCCH monitoring occasion is a PDCCH monitoring occasion with a largest index, and wherein the control-resource set group comprises one or more control-resource sets.
13 . The non-transitory computer-readable storage medium according to claim 12 , wherein the operations comprises:
determining, based on a downlink assignment index (DAI) value indicated by the target DCI, a quantity of the HARQ-ACK feedback bits carried on the same PUCCH resource.
14 . The non-transitory computer-readable storage medium according to claim 13 , wherein determining the quantity of the HARQ-ACK feedback bits carried on the same PUCCH resource comprises:
increasing a buffer value by 1 when the DAI value indicated by the target DCI is less than a DAI value indicated by second DCI on the last PDCCH monitoring occasion, wherein
the second DCI corresponds to an index value of the control-resource set group that is different from the index value that corresponds to the target DCI, and
determining, based on a sum of the buffer value and the DAI value, the quantity of the HARQ-ACK feedback bits carried on the PUCCH resource.
15 . The non-transitory computer-readable storage medium according to claim 12 , wherein the DCI monitored on the at least one PDCCH monitoring occasion is carried on a plurality of carriers, and the target DCI is carried on a carrier having a largest carrier number in the plurality of carriers, or the target DCI is carried on a carrier having a smallest carrier number in the plurality of carriers.
16 . The non-transitory computer-readable storage medium according to claim 15 , wherein at least one of the plurality of carriers comprises at least two control-resource set groups.