Signaling for inter-base station interference estimation
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a message indicating one or more communication patterns from a base station. The one or more communication patterns may indicate to the UE to adjust one or more parameters for transmitting an uplink communication during a set of time resources, a set of beams, a set of ports, or any combination thereof. During the resources indicated in the one or more communication patterns, the base station may estimate a cross link interference channel between the base station and a second base station. The one or more communication patterns may indicate a hopping pattern for each subband of a bandwidth part. The base station may configure the UE with a timing advance based on the message.
1. A user equipment (UE) for wireless communication, comprising:
one or more processors;
one or more memories coupled with the one or more processors; and
instructions stored in the one or more memories and executable by the one or more processors to cause the UE to:
receive, from a first base station, a message for estimating a cross-link interference channel between uplink communications associated with the first base station and downlink communications associated with a second base station;
adjust a transmission parameter for an uplink communication based at least in part on receiving the message from the first base station; and
transmit the uplink communication over one or more resources based at least in part on adjusting the transmission parameter.
2. The UE of claim 1 , wherein the instructions are further executable by the one or more processors to cause the UE to:
receive, from the first base station, a second message to activate a communication pattern of one or more communication patterns, wherein adjusting the transmission parameter for the uplink communication is based at least in part on receiving the second message.
3. The UE of claim 2 , wherein:
the message comprises a radio resource control message; and
the second message comprises a medium access control-control element or downlink control information.
4. The UE of claim 1 , wherein the instructions to adjust the transmission parameter for the uplink communication are further executable by the one or more processors to cause the UE to:
reduce a transmit power of the uplink communications during at least a portion of the one or more resources.
5. The UE of claim 4 , wherein the instructions to reduce the transmit power of the uplink communications are further executable by the one or more processors to cause the UE to:
reduce the transmit power of the uplink communications to zero during the portion of the one or more resources.
6. The UE of claim 1 , wherein the instructions are further executable by the one or more processors to cause the UE to:
identify a first subband of a bandwidth part for estimating the cross-link interference channel, a second subband of the bandwidth part for a second uplink communication by the UE, and a third subband of the bandwidth part as a guard band between the first subband and the second subband based at least in part on receiving the message, the one or more resources comprising the bandwidth part, wherein adjusting the transmission parameter for the uplink communication is based at least in part on the identifying.
7. The UE of claim 6 , wherein the instructions are further executable by the one or more processors to cause the UE to:
transmit, over the second subband, the uplink communication to the first base station based at least in part on receiving the message.
8. The UE of claim 1 , wherein the instructions are further executable by the one or more processors to cause the UE to:
identify a hopping pattern of subbands of a bandwidth part for estimating the cross-link interference channel and transmitting the uplink communications based at least in part on receiving the message, the hopping pattern spanning a plurality of slots, wherein adjusting the transmission parameter for the uplink communication is based at least in part on the identifying.
9. The UE of claim 1 , wherein the instructions to adjust the transmission parameter for the uplink communication are further executable by the one or more processors to cause the UE to:
apply a timing advance for the uplink communication transmitted by the UE during a first time resource of the one or more resources based at least in part on receiving the message, the timing advance based at least in part on a propagation delay of a downlink communication transmitted by the second base station.
10. The UE of claim 1 , wherein the instructions to adjust the transmission parameter for the uplink communication are further executable by the one or more processors to cause the UE to:
identify one or more beams to restrict the UE from using to transmit the uplink communication during the one or more resources, wherein the message indicates the one or more beams.
11. The UE of claim 10 , wherein the instructions are further executable by the one or more processors to cause the UE to:
receive, from the first base station, a second message that schedules the UE with the uplink communication using the one or more beams; and
determine to skip the uplink communication or use a different beam than the one or more beams based at least in part on the message.
12. The UE of claim 1 , wherein the instructions are further executable by the one or more processors to cause the UE to:
identify one or more subbands of frequency resources or one or more slots of time resources or both for estimating the cross-link interference channel, wherein the message includes an indication of the one or more subbands or the one or more slots.
13. A first base station for wireless communication, comprising:
one or more processors;
one or more memories coupled with the one or more processors; and
instructions stored in the one or more memories and executable by the one or more processors to cause the first base station to:
transmit, to a user equipment (UE), a message for estimating a cross-link interference channel between the first base station and a second base station, the first base station configured to receive uplink communications over one or more resources;
monitor the one or more resources for cross-link interference associated with the second base station based at least in part on transmitting the message; and
process an uplink communication from the UE communicated over a resource full duplexed with one or more downlink communications associated with the second base station based at least in part on monitoring the one or more resources for the cross-link interference.
14. The first base station of claim 13 , wherein the instructions are further executable by the one or more processors to cause the first base station to:
transmit a second message to activate a communication pattern of one or more communication patterns, wherein monitoring the one or more resources for the cross-link interference is based at least in part on transmitting the second message, wherein the message comprises a radio resource control message and the second message comprises a medium access control-control element or downlink control information.
15. The first base station of claim 13 , wherein the instructions are further executable by the one or more processors to cause the first base station to:
identify one or more UEs to mute the uplink communications during at least a portion of one or more resources, the one or more UEs comprising the UE, wherein transmitting the message is based at least in part on identifying the one or more UEs.
16. The first base station of claim 13 , wherein the instructions are further executable by the one or more processors to cause the first base station to:
identify one or more subbands of frequency resources or one or more slots of time resources or both for estimating the cross-link interference channel, wherein the message includes an indication of the one or more subbands or the one or more slots.
17. The first base station of claim 13 , wherein the instructions are further executable by the one or more processors to cause the first base station to:
identify a first subband of a bandwidth part for estimating the cross-link interference channel, a second subband of the bandwidth part for the uplink communication by the UE, and a third subband of the bandwidth part as a guard band between the first subband and the second subband, the one or more resources comprising the bandwidth part.
18. The first base station of claim 17 , wherein the instructions to monitor the one or more resources are further executable by the one or more processors to cause the first base station to monitor the first subband of the bandwidth part for the cross-link interference.
19. The first base station of claim 17 , wherein the instructions are further executable by the one or more processors to cause the first base station to:
receive, over the second subband, the uplink communication from the UE based at least in part on transmitting the message.
20. A first base station for wireless communication, comprising:
one or more processors;
one or more memories coupled with the one or more processors; and
instructions stored in the one or more memories and executable by the one or more processors to cause the first base station to:
transmit a message indicating a first resource comprising a first type of resource or a second resource comprising a second type of resource to use for estimating a cross-link interference channel between the first base station and a second base station, wherein the first base station is configured to receive uplink communications or transmit downlink communications to a user equipment (UE) over the first type of resource and the first base station is configured to transmit the downlink communications to the UE over the second type of resource;
monitor one or more resources for cross-link interference associated with the second base station based at least in part on transmitting the message; and
process an uplink communication from the UE over a full-duplex resource based at least in part on monitoring the one or more resources for the cross-link interference.