Dynamic PUCCH repetition indication
Aspects presented herein relate to methods and devices for wireless communication including an apparatus, e.g., a UE and/or a base station. The apparatus may receive, from a base station, a radio resource control (RRC) message including an indication of a number of physical uplink control channel (PUCCH) repetitions. The apparatus may also receive, from the base station, downlink control information (DCI) indicating a codepoint associated with the number of PUCCH repetitions, the codepoint including at least one PUCCH resource indicator (PRI) associated with a PUCCH resource of one or more PUCCH resource sets, the at least one PRI corresponding to the number of PUCCH repetitions. The apparatus may also transmit, to the base station, a PUCCH via the PUCCH resource of the one or more PUCCH resource sets, the transmitted PUCCH corresponding to the number of PUCCH repetitions.
1 . An apparatus for wireless communication at a user equipment (UE), comprising:
memory; and
at least one processor coupled to the memory and configured to:
receive, from a base station, a radio resource control (RRC) message including an indication of a number of physical uplink control channel (PUCCH) repetitions;
receive, from the base station, downlink control information (DCI) indicating a codepoint associated with the number of PUCCH repetitions, the codepoint including at least one PUCCH resource indicator (PRI) associated with a PUCCH resource of one or more PUCCH resource sets, the at least one PRI corresponding to the number of PUCCH repetitions, wherein the codepoint of the DCI includes at least one K1 value corresponding to a timing offset, and the at least one K1 value further corresponds to the number of PUCCH repetitions;
select one PUCCH resource set of the one or more PUCCH resource sets based on an uplink control information (UCI) size; and
transmit, to the base station, a PUCCH transmission via the PUCCH resource of the one or more PUCCH resource sets, wherein the PUCCH transmission corresponds to the number of PUCCH repetitions.
2 . The apparatus of claim 1 , wherein the codepoint of the DCI includes the number of PUCCH repetitions, such that the number of PUCCH repetitions overwrites a previous number of PUCCH repetitions.
3 . The apparatus of claim 1 , wherein the number of PUCCH repetitions is at least one of an overall repetition number, an actual repetition number, or a scaled value of the number of PUCCH repetitions configured based on a PUCCH format or the PUCCH resource.
4 . The apparatus of claim 3 , wherein the number of PUCCH repetitions is the overall repetition number, and the overall repetition number corresponds to a number of PUCCH repetitions for spatial relation information 1 and a number of PUCCH repetitions for spatial relation information 2 .
5 . The apparatus of claim 3 , wherein the number of PUCCH repetitions is the actual repetition number, and the actual repetition number applies to a number of PUCCH repetitions for spatial relation information 1 or a number of PUCCH repetitions for spatial relation information 2 .
6 . The apparatus of claim 3 , wherein the number of PUCCH repetitions is the scaled value of the number of PUCCH repetitions, and the scaled value of the number of PUCCH repetitions is one half of the number of PUCCH repetitions or twice of the number of PUCCH repetitions.
7 . The apparatus of claim 1 , wherein the DCI indicates the UCI size.
8 . The apparatus of claim 1 , wherein the at least one PRI corresponds to the selected one PUCCH resource set.
9 . The apparatus of claim 1 , wherein the indication corresponds to a resource list.
10 . The apparatus of claim 1 , further comprising a transceiver or an antenna coupled to the at least one processor.
11 . A method of wireless communication at a user equipment (UE), comprising:
receiving, from a base station, a radio resource control (RRC) message including an indication of a number of physical uplink control channel (PUCCH) repetitions;
receiving, from the base station, downlink control information (DCI) indicating a codepoint associated with the number of PUCCH repetitions, the codepoint including at least one PUCCH resource indicator (PRI) associated with a PUCCH resource of one or more PUCCH resource sets, the at least one PRI corresponding to the number of PUCCH repetitions, wherein the codepoint of the DCI includes at least one K1 value corresponding to a timing offset, and the at least one K1 value further corresponds to the number of PUCCH repetitions;
selecting one PUCCH resource set of the one or more PUCCH resource sets based on an uplink control information (UCI) size; and
transmitting, to the base station, a PUCCH transmission via the PUCCH resource of the one or more PUCCH resource sets, wherein the PUCCH transmission corresponds to the number of PUCCH repetitions.
12 . The method of claim 11 , wherein the number of PUCCH repetitions is at least one of an overall repetition number, an actual repetition number, or a scaled value of the number of PUCCH repetitions configured based on a PUCCH format or the PUCCH resource.
13 . An apparatus for wireless communication at a base station, comprising:
memory; and
at least one processor coupled to the memory and configured to:
transmit, to a user equipment (UE), a radio resource control (RRC) message including an indication of a number of physical uplink control channel (PUCCH) repetitions;
transmit, to the UE, downlink control information (DCI) indicating a codepoint associated with the number of PUCCH repetitions, the codepoint including at least one PUCCH resource indicator (PRI) associated with a PUCCH resource of one or more PUCCH resource sets, the at least one PRI corresponding to the number of PUCCH repetitions, wherein the codepoint of the DCI includes at least one K1 value corresponding to a timing offset, and the at least one K1 value further corresponds to the number of PUCCH repetitions; and
receive, from the UE, a PUCCH transmission via the PUCCH resource of the one or more PUCCH resource sets, wherein the PUCCH transmission corresponds to the number of PUCCH repetitions, wherein one PUCCH resource set of the one or more PUCCH resource sets is based on an uplink control information (UCI) size.
14 . The apparatus of claim 13 , wherein the codepoint of the DCI includes the number of PUCCH repetitions, such that the number of PUCCH repetitions overwrites a previous number of PUCCH repetitions.
15 . The apparatus of claim 13 , wherein the number of PUCCH repetitions is at least one of an overall repetition number, an actual repetition number, or a scaled value of the number of PUCCH repetitions configured based on a PUCCH format or the PUCCH resource.
16 . The apparatus of claim 15 , wherein the number of PUCCH repetitions is the overall repetition number, and the overall repetition number corresponds to a number of PUCCH repetitions for spatial relation information 1 and a number of PUCCH repetitions for spatial relation information 2 .
17 . The apparatus of claim 15 , wherein the number of PUCCH repetitions is the actual repetition number, and the actual repetition number applies to a number of PUCCH repetitions for spatial relation information 1 or a number of PUCCH repetitions for spatial relation information 2 .
18 . The apparatus of claim 15 , wherein the number of PUCCH repetitions is the scaled value of the number of PUCCH repetitions, and the scaled value of the number of PUCCH repetitions is one half of the number of PUCCH repetitions or twice of the number of PUCCH repetitions.
19 . The apparatus of claim 13 , wherein the DCI indicates the UCI size.
20 . The apparatus of claim 13 , wherein the at least one PRI corresponds to the one PUCCH resource set.
21 . The apparatus of claim 13 , wherein the indication corresponds to a resource list.
22 . The apparatus of claim 13 , further comprising a transceiver or an antenna coupled to the at least one processor.
23 . A method of wireless communication at a base station, comprising:
transmitting, to a user equipment (UE), a radio resource control (RRC) message including an indication of a number of physical uplink control channel (PUCCH) repetitions;
transmitting, to the UE, downlink control information (DCI) indicating a codepoint associated with the number of PUCCH repetitions, the codepoint including at least one PUCCH resource indicator (PRI) associated with a PUCCH resource of one or more PUCCH resource sets, the at least one PRI corresponding to the number of PUCCH repetitions, wherein the codepoint of the DCI includes at least one K1 value corresponding to a timing offset, and the at least one K1 value further corresponds to the number of PUCCH repetitions; and
receiving, from the UE, a PUCCH transmission via the PUCCH resource of the one or more PUCCH resource sets, wherein the PUCCH transmission corresponds to the number of PUCCH repetitions, wherein one PUCCH resource set of the one or more PUCCH resource sets is based on an uplink control information (UCI) size.