Uplink power control for full duplex communication
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive downlink control information (DCI) that schedules an uplink communication in an uplink frequency band. The UE may transmit, at an uplink frequency within the uplink frequency band, the uplink communication with a power that varies over the uplink frequency band based at least in part on a location of the uplink frequency relative to a downlink frequency band associated with the UE. Numerous other aspects are provided.
1. A user equipment (UE) for wireless communication, comprising:
one or more memories;
a transceiver; and
one or more processors coupled to the one or more memories and the transceiver, the one or more processors configured to:
receive, via the transceiver, information that identifies a plurality of filters for processing a baseband signal, wherein each filter of the plurality of filters is configured to attenuate signals for frequencies associated with an edge of an uplink frequency band;
receive, via the transceiver, downlink control information (DCI) that schedules an uplink communication in the uplink frequency band; and
transmit, at an uplink frequency within the uplink frequency band, via the transceiver, the uplink communication based at least in part on processing of the baseband signal using a filter of the plurality of filters.
2. The UE of claim 1 , wherein the one or more processors are further configured to:
receive, via the transceiver, an indication of the filter that is to be used for the processing of the baseband signal, wherein the one or more processors are configured to transmit, via the transceiver, the uplink communication based at least in part on reception of the indication of the filter that is to be used.
3. The UE of claim 2 , wherein the DCI includes the indication of the filter.
4. The UE of claim 1 , wherein the one or more processors are further configured to:
determine the filter that is to be used based at least in part on a location of the uplink frequency relative to a downlink frequency band.
5. The UE of claim 1 , wherein the one or more processors are further configured to:
determine the filter that is to be used based at least in part on a size of a frequency gap between the uplink frequency and a downlink frequency band.
6. The UE of claim 5 , wherein the one or more processors, to determine the filter, are configured to:
select the filter based at least in part on the size of the frequency gap satisfying a threshold value.
7. The UE of claim 5 , wherein the one or more processors, to determine the filter, are configured to:
select the filter based at least in part on a size of a guard band between the uplink frequency band and the downlink frequency band satisfying a threshold value.
8. The UE of claim 1 , wherein the one or more processors are further configured to:
determine the filter that is to be used based at least in part on whether a downlink communication in a downlink frequency band is scheduled to overlap in time with the uplink communication.
9. The UE of claim 1 , wherein the one or more processors, to transmit the uplink communication, are configured to:
transmit the uplink communication using an uplink transmit power that varies across the uplink frequency band based at least in part on the filter.
10. A method of wireless communication performed by a user equipment (UE), comprising:
receiving information that identifies a plurality of filters for processing a baseband signal, wherein each filter of the plurality of filters is configured to attenuate signals for frequencies associated with an edge of an uplink frequency band;
receiving downlink control information (DCI) that schedules an uplink communication in the uplink frequency band; and
transmitting, at an uplink frequency within the uplink frequency band, the uplink communication based at least in part on processing the baseband signal using a filter of the plurality of filters.
11. The method of claim 10 , further comprising:
receiving an indication of the filter that is to be used for processing the baseband signal, wherein the uplink communication is transmitted based at least in part on receiving the indication of the filter that is to be used.
12. The method of claim 11 , wherein the DCI includes the indication of the filter.
13. The method of claim 10 , further comprising:
determining the filter that is to be used based at least in part on a location of the uplink frequency relative to a downlink frequency band.
14. The method of claim 10 , further comprising:
determining the filter that is to be used based at least in part on a size of a frequency gap between the uplink frequency and a downlink frequency band.
15. The method of claim 14 , wherein determining the filter comprises:
selecting the filter based at least in part on the size of the frequency gap satisfying a threshold value.
16. The method of claim 14 , wherein determining the filter comprises:
selecting the filter based at least in part on a size of a guard band between the uplink frequency band and the downlink frequency band satisfying a threshold value.
17. The method of claim 10 , further comprising:
determining the filter that is to be used based at least in part on whether a downlink communication in a downlink frequency band is scheduled to overlap in time with the uplink communication.
18. The method of claim 10 , wherein transmitting the uplink communication comprises:
transmitting the uplink communication using an uplink transmit power that varies across the uplink frequency band based at least in part on the filter.
19. A base station for wireless communication, comprising:
one or more memories; and
one or more processors, coupled to the one or more memories, configured to:
transmit, to a user equipment (UE), information that identifies a plurality of filters for processing a baseband signal, wherein each filter of the plurality of filters is configured to attenuate signals for frequencies associated with an edge of an uplink frequency band;
transmit, to the UE, downlink control information (DCI) that schedules an uplink communication in the uplink frequency band; and
receive, from the UE at an uplink frequency within the uplink frequency band, the uplink communication based at least in part on processing the baseband signal using a filter of the plurality of filters.
20. The base station of claim 19 , wherein the one or more processors are further configured to:
transmit an indication of the filter that is to be used for the processing of the baseband signal.