Timing considerations for dynamic indication of uplink (UL) channel repetition factors
Certain aspects of the present disclosure provide techniques for application of a repetition factor to uplink (UL) control channels. A method that may be performed by a user equipment (UE) includes receiving, on a downlink (DL) control channel, an indication of a configuration for repetition of a UL control channel scheduled by the DL control channel and another UL control channel, wherein the configuration is applied for repetition of the other UL control channel after a configured time period starting from reception of the DL control channel; and transmitting the repetition of the UL control channel and the repetition of the other UL control channel in accordance with the configuration.
1. A method for wireless communication by a user equipment (UE), comprising:
receiving, on a downlink (DL) control channel, an indication of a configuration for repetition of an uplink (UL) control channel scheduled by the DL control channel and another UL control channel scheduled using an indication received separately from the DL control channel, wherein the configuration is applied for repetition of the other UL control channel configured for transmission via one of UL control channel formats after a configured time period starting from reception of the DL control channel, wherein different values of the configured time period are applicable for different types of content of the other UL control channel and different UL control channel formats used for transmission of the other UL control channel, and wherein a current value of the configured time period is based on a type of content of the other UL control channel and an UL control channel format used for transmission of the other UL control channel; and
transmitting the repetition of the UL control channel and the repetition of the other UL control channel in accordance with the configuration.
2. The method of claim 1 , wherein the other UL control channel comprises:
a UL control channel carrying acknowledgment (ACK) or negative ACK (NACK) feedback for a DL data channel configured using semi-persistent scheduling (SPS); or
a UL control channel carrying periodic channel state information (P-CSI).
3. The method of claim 1 , further comprising receiving an indication of a UL control channel resource set to be used for transmission of the other UL control channel, wherein the configured time period is dependent on the UL control channel resource set.
4. The method of claim 3 , wherein the configured time period is configured as part of a configuration of the UL control channel resource set.
5. The method of claim 1 , wherein the configured time period is dependent on a format of the other UL control channel.
6. The method of claim 1 , wherein the configured time period is configured as a quantity of slots, a quantity of symbols, or absolute time.
7. The method of claim 1 , wherein the configured time period is dependent on a capability of the UE.
8. The method of claim 1 , wherein:
the other UL control channel comprises a UL control channel for a DL data channel configured using SPS; and
the configured time period is based on a timing associated with reception of the DL data channel.
9. The method of claim 1 , wherein the configured time period is dependent on at least one of a frequency range, a frequency band, or subcarrier spacing (SCS) associated with the other UL control channel.
10. A method for wireless communication by a base station (BS), comprising:
transmitting, on a downlink (DL) control channel, an indication of a configuration for repetition of an uplink (UL) control channel scheduled by the DL control channel and another UL control channel scheduled using an indication received separately from the DL control channel, wherein the configuration is applied for repetition of the other UL control channel configured for transmission via one of UL control channel formats after a configured time period starting from transmission of the DL control channel, wherein different values of the configured time period are applicable for different types of content of the other UL control channel and different UL control channel formats used for transmission of the other UL control channel, and wherein a current value of the configured time period is based on a type of content of the other UL control channel and an UL control channel format used for transmission of the other UL control channel; and
receiving the repetition of the UL control channel and the repetition of the other UL control channel in accordance with the configuration.
11. The method of claim 10 , wherein the other UL control channel comprises:
a UL control channel carrying acknowledgment (ACK) or negative ACK (NACK) feedback for a DL data channel configured using semi-persistent scheduling (SPS); or
a UL control channel carrying periodic channel state information (P-CSI).
12. The method of claim 10 , further comprising transmitting an indication of a UL control channel resource set to be used by a user equipment (UE) for transmission of the other UL control channel, wherein the configured time period is dependent on the UL control channel resource set.
13. The method of claim 12 , wherein the configured time period is configured as part of a configuration of the UL control channel resource set.
14. The method of claim 10 , wherein the configured time period is dependent on a format of the other UL control channel.
15. The method of claim 10 , wherein the configured time period is configured as a quantity of slots, a quantity of symbols, or absolute time.
16. The method of claim 10 , wherein the configured time period is dependent on a capability of a UE.
17. The method of claim 10 , wherein:
the other UL control channel comprises a UL control channel for a DL data channel configured using SPS; and
the configured time period is based on a timing associated with transmission of the DL data channel.
18. The method of claim 10 , wherein the configured time period is dependent on at least one of a frequency range, frequency band, or subcarrier spacing (SCS) associated with the other UL control channel.
19. An apparatus for wireless communication, comprising:
a memory comprising instructions; and
one or more processors configured to execute the instructions and cause the apparatus to:
receive, on a downlink (DL) control channel, an indication of a configuration for repetition of an uplink (UL) control channel scheduled by the DL control channel and another UL control channel scheduled using an indication received separately from the DL control channel, wherein the configuration is applied for repetition of another UL control channel configured for transmission via one of UL control channel formats after a configured time period starting from reception of the DL control channel, wherein different values of the configured time period are applicable for different types of content of the other UL control channel and different UL control channel formats used for transmission of the other UL control channel, and wherein a current value of the configured time period is based on a type of content of the other UL control channel and an UL control channel format used for transmission of the other UL control channel; and
transmit the repetition of the UL control channel and the repetition of the other UL control channel in accordance with the configuration.
20. The apparatus of claim 19 , wherein the other UL control channel comprises:
a UL control channel carrying acknowledgment (ACK) or negative ACK (NACK) feedback for a DL data channel configured using semi-persistent scheduling (SPS); or
a UL control channel carrying periodic channel state information (P-CSI).
21. The apparatus of claim 19 , wherein the one or more processors are further configured to execute the instructions and cause the apparatus to receive an indication of a UL control channel resource set to be used for transmission of the other UL control channel, wherein the configured time period is dependent on the UL control channel resource set.
22. An apparatus for wireless communication, comprising:
a memory comprising instructions; and
one or more processors configured to execute the instructions and cause the apparatus to:
transmit, on a downlink (DL) control channel, an indication of a configuration for repetition of an uplink (UL) control channel scheduled by the DL control channel and another UL control channel scheduled using an indication received separately from the DL control channel, wherein the configuration is applied for repetition of another UL control channel configured for transmission via one of UL control channel formats after a configured time period starting from transmission of the DL control channel, wherein different values of the configured time period are applicable for different types of content of the other UL control channel and different UL control channel formats used for transmission of the other UL control channel, and wherein a current value of the configured time period is based on a type of content of the other UL control channel and an UL control channel format used for transmission of the other UL control channel; and
receive the repetition of the UL control channel and the repetition of the other UL control channel in accordance with the configuration.
23. The apparatus of claim 22 , wherein the other UL control channel comprises:
a UL control channel carrying acknowledgment (ACK) or negative ACK (NACK) feedback for a DL data channel configured using semi-persistent scheduling (SPS); or
a UL control channel carrying periodic channel state information (CSI).