Uplink spatial filter and power control for channel estimation across physical uplink control channels

A method of wireless communication at a base station, comprising:

• transmitting, to a user equipment (UE), an indication to transmit a set of physical uplink control channels (PUCCHs), each PUCCH of the set of PUCCHs comprising a corresponding demodulation reference signal (DMRS);
• transmitting, to the UE, for each PUCCH of the set of PUCCHs, one or more indicators indicating respective power control parameters for the set of PUCCHs, wherein each PUCCH of the set of PUCCHs is transmitted based on a corresponding one of the respective power control parameters;
• and
• based on different power control parameters being applied to transmissions, receiving, from the UE, a first PUCCH and a second PUCCH from the set of PUCCHs comprising corresponding DMRSs having phase discontinuity, such that the first PUCCH of the set of PUCCHs is received based on a first power control parameter and the second PUCCH of the set of PUCCHs is received based on a second power control parameter different from the first power control parameter,
• wherein the first PUCCH and the second PUCCH are consecutive PUCCH transmissions, and
• wherein the one or more indicators further indicates respective spatial relation parameters for the set of PUCCHs, and wherein the set of PUCCHs are received with the phase discontinuity based on different spatial relation parameters being applied to the transmissions.

An apparatus for wireless communication at a user equipment (UE), comprising:

• a memory;
• and
• at least one processor coupled to the memory and configured to:
• receive, from a base station, an indication to transmit a set of physical uplink control channels (PUCCHs), each PUCCH of the set of PUCCHs comprising a corresponding demodulation reference signal (DMRS);
• receive, from the base station, for each PUCCH of the set of PUCCHs, one or more indicators indicating respective power control parameters for the set of PUCCHs, wherein each PUCCH of the set of PUCCHs is transmitted based on a corresponding one of the respective power control parameters;
• and
• based on different power control parameters being applied to transmissions, transmit, to the base station, a first PUCCH and a second PUCCH from the set of PUCCHs comprising corresponding DMRSs having phase discontinuity, such that the first PUCCH of the set of PUCCHs is transmitted based on a first power control parameter and the second PUCCH of the set of PUCCHs is transmitted based on a second power control parameter different from the first power control parameter, wherein the first PUCCH and the second PUCCH are consecutive PUCCH transmissions, and
• wherein the one or more indicators further indicates respective spatial relation parameters for the set of PUCCHs, and wherein the set of PUCCHs are transmitted with the phase discontinuity based on different spatial relation parameters being applied to the transmissions.

An apparatus for wireless communication at a base station, comprising:

• a memory;
• and
• at least one processor coupled to the memory and configured to:
• transmit, to a user equipment (UE), an indication to transmit a set of physical uplink control channels (PUCCHs), each PUCCH of the set of PUCCHs comprising a corresponding demodulation reference signal (DMRS);
• transmit, to the UE, for each PUCCH of the set of PUCCHs, one or more indicators indicating respective power control parameters for the set of PUCCHs, wherein each PUCCH of the set of PUCCHs is transmitted based on a corresponding one of the respective power control parameters;
• and
• based on different power control parameters being applied to transmissions, receive, from the UE, a first PUCCH and a second PUCCH from the set of PUCCHs comprising corresponding DMRS having phase discontinuity, such that the first PUCCH of the set of PUCCHs is received based on a first power control parameter and the second PUCCH of the set of PUCCHs is received based on a second power control parameter different from the first power control parameter, wherein the first PUCCH and the second PUCCH are consecutive PUCCH transmissions, and
• wherein the one or more indicators further indicates respective spatial relation parameters for the set of PUCCHs, and wherein the set of PUCCHs are received with the phase discontinuity based on different spatial relation parameters being applied to the transmissions.