Layer 1 cross-link interference collision management
Methods, systems, and devices for wireless communications are described. Generally, the described techniques provide for prioritization schemes for prioritizing colliding cross-link interference (CLI) measurements scheduled via Layer-1 signaling and a downlink transmissions scheduled according to periodic configurations. In some examples, a user equipment (UE) may prioritize downlink transmissions over CLI measurements. A UE may not monitor for or may not decode downlink control information scheduling CLI measurements in resources that the UE has a scheduled downlink reception according to a periodic scheduling configuration. In some examples, the UE may prioritize a colliding CLI measurement and downlink transmission based on an indicated priority of each, a type a CLI measurement, a type of downlink transmission, and/or a location of the UE within the cell. The UE may either monitor for the downlink transmission or perform the CLI measurement based on the priority scheme.
1 . A method for wireless communications at a user equipment (UE), comprising:
receiving, from a base station, control signaling scheduling a set of downlink transmissions according to a periodic scheduling configuration;
receiving, from the base station, downlink control information scheduling a cross-link interference measurement in a communications resource; and
monitoring for a downlink transmission of the set of downlink transmissions or performing the cross-link interference measurement using the communications resource based at least in part on a priority scheme associated with cross-link interference measurement and a collision between the downlink transmission and the communications resource.
2 . The method of claim 1 , further comprising:
receiving, from the base station, an indication of the priority scheme.
3 . The method of claim 1 , further comprising:
receiving the downlink control information scheduling the cross-link interference measurement in accordance with a periodic scheduling cross-link interference measurement configuration; and
monitoring for the downlink transmission using the communications resource based at least in part on the priority scheme assigning a higher priority level to downlink transmissions than to cross-link interference measurements scheduled in accordance with periodic scheduling cross-link interference measurement configurations.
4 . The method of claim 1 , further comprising:
performing the cross-link interference measurement using the communications resource based at least in part on the cross-link interference measurement comprising an aperiodic cross-link measurement and the priority scheme assigning a higher priority level to aperiodic cross-link measurements than to downlink transmissions.
5 . The method of claim 1 , further comprising:
monitoring for the downlink transmission using the communications resource based at least in part on the downlink transmission comprising a downlink control channel transmission and the priority scheme assigning a higher priority level to downlink control channel transmissions than to cross-link interference measurements.
6 . The method of claim 1 , further comprising:
monitoring for the downlink transmission using the communications resource based at least in part on the downlink transmission comprising a channel state information reference signal and the priority scheme assigning a higher priority level to channel state information reference signals than to cross-link interference measurements.
7 . The method of claim 1 , further comprising:
suppressing decoding of the downlink control information based at least in part on determining that the downlink control information is associated with the communications resource as the downlink transmission and based at least in part on the priority scheme assigning a higher priority level to downlink transmissions than to cross-link interference measurements.
8 . The method of claim 1 , further comprising:
receiving, from the base station, an indication that the cross-link interference measurement comprises a sounding reference signal reference signal received power measurement; and
performing the cross-link interference measurement using the communications resource based at least in part on the priority scheme assigning a higher priority level to sounding reference signal reference signal received power measurements than to downlink transmissions.
9 . The method of claim 8 , further comprising:
identifying an aggressor UE based at least in part on the sounding reference signal reference signal received power measurement; and
reporting the cross-link interference measurement and the aggressor UE to the base station.
10 . The method of claim 1 , further comprising:
receiving, from the base station, an indication that the cross-link interference measurement comprises a cross-link interference received signal strength indicator measurement; and
monitoring for the downlink transmission using the communications resource based at least in part on the priority scheme assigning a higher priority level to downlink transmissions than to cross-link interference received signal strength indicator measurements.
11 . The method of claim 1 , further comprising:
receiving, from the base station, an indication of a first priority level associated with the cross-link interference measurement; and
monitoring for the downlink transmission or performing the cross-link interference measurement using the communications resource based at least in part on a comparison of the first priority level to a second priority level associated with the downlink transmission.
12 . The method of claim 11 , further comprising:
receiving, with the control signaling, an indication of the second priority level associated with the downlink transmission.
13 . The method of claim 11 , further comprising:
receiving the indication of the first priority level associated with the cross-link interference measurement via one of the downlink control information, a radio resource control message, or a medium access control (MAC) control element.
14 . The method of claim 1 , further comprising:
receiving, from the base station, an indication that the cross-link interference measurement is associated with either inter-cell or intra-cell cross-link interference;
determining a position of the UE within a cell associated with the base station; and
monitoring for the downlink transmission or performing the cross-link interference measurement based at least in part on the indication and the determined position of the UE within the cell.
15 . The method of claim 14 , further comprising:
receiving the indication that the cross-link interference measurement is associated with either inter-cell or intra-cell cross-link interference via one of the downlink control information, a radio resource control message, or a medium access control (MAC) control element.
16 . An apparatus for wireless communications at a user equipment (UE), comprising:
a processor;
memory coupled with the processor; and
instructions stored in the memory and executable by the processor to cause the apparatus to:
receive, from a base station, control signaling scheduling a set of downlink transmissions according to a periodic scheduling configuration;
receive, from the base station, downlink control information scheduling a cross-link interference measurement in a communications resource; and
monitor for a downlink transmission of the set of downlink transmissions or performing the cross-link interference measurement using the communications resource based at least in part on a priority scheme associated with cross-link interference measurement and a collision between the downlink transmission and the communications resource.
17 . The apparatus of claim 16 , wherein the instructions are further executable by the processor to cause the apparatus to:
receive, from the base station, an indication of the priority scheme.
18 . The apparatus of claim 16 , wherein the instructions are further executable by the processor to cause the apparatus to:
receive the downlink control information scheduling the cross-link interference measurement in accordance with a periodic scheduling cross-link interference measurement configuration; and
monitor for the downlink transmission using the communications resource based at least in part on the priority scheme assigning a higher priority level to downlink transmissions than to cross-link interference measurements scheduled in accordance with periodic scheduling cross-link interference measurement configurations.
19 . The apparatus of claim 16 , wherein the instructions are further executable by the processor to cause the apparatus to:
perform the cross-link interference measurement using the communications resource based at least in part on the cross-link interference measurement comprising an aperiodic cross-link measurement and the priority scheme assigning a higher priority level to aperiodic cross-link measurements than to downlink transmissions.
20 . The apparatus of claim 16 , wherein the instructions are further executable by the processor to cause the apparatus to:
monitor for the downlink transmission using the communications resource based at least in part on the downlink transmission comprising a downlink control channel transmission and the priority scheme assigning a higher priority level to downlink control channel transmissions than to cross-link interference measurements.
21 . The apparatus of claim 16 , wherein the instructions are further executable by the processor to cause the apparatus to:
monitor for the downlink transmission using the communications resource based at least in part on the downlink transmission comprising a channel state information reference signal and the priority scheme assigning a higher priority level to channel state information reference signals than to cross-link interference measurements.
22 . The apparatus of claim 16 , wherein the instructions are further executable by the processor to cause the apparatus to:
suppress decoding of the downlink control information based at least in part on determining that the downlink control information is associated with the communications resource as the downlink transmission and based at least in part on the priority scheme assigning a higher priority level to downlink transmissions than to cross-link interference measurements.
23 . The apparatus of claim 16 , wherein the instructions are further executable by the processor to cause the apparatus to:
receive, from the base station, an indication that the cross-link interference measurement comprises a sounding reference signal reference signal received power measurement; and
perform the cross-link interference measurement using the communications resource based at least in part on the priority scheme assigning a higher priority level to sounding reference signal reference signal received power measurements than to downlink transmissions.
24 . The apparatus of claim 23 , wherein the instructions are further executable by the processor to cause the apparatus to:
identify an aggressor UE based at least in part on the sounding reference signal reference signal received power measurement; and
report the cross-link interference measurement and the aggressor UE to the base station.
25 . The apparatus of claim 16 , wherein the instructions are further executable by the processor to cause the apparatus to:
receive, from the base station, an indication that the cross-link interference measurement comprises a cross-link interference received signal strength indicator measurement; and
monitor for the downlink transmission using the communications resource based at least in part on the priority scheme assigning a higher priority level to downlink transmissions than to cross-link interference received signal strength indicator measurements.
26 . The apparatus of claim 16 , wherein the instructions are further executable by the processor to cause the apparatus to:
receive, from the base station, an indication of a first priority level associated with the cross-link interference measurement; and
monitor for the downlink transmission or performing the cross-link interference measurement using the communications resource based at least in part on a comparison of the first priority level to a second priority level associated with the downlink transmission.
27 . The apparatus of claim 26 , wherein the instructions are further executable by the processor to cause the apparatus to:
receive, with the control signaling, an indication of the second priority level associated with the downlink transmission.
28 . The apparatus of claim 26 , wherein the instructions are further executable by the processor to cause the apparatus to:
receive the indication of the first priority level associated with the cross-link interference measurement via one of the downlink control information, a radio resource control message, or a medium access control (MAC) control element.
29 . An apparatus for wireless communications at a user equipment (UE), comprising:
means for receiving, from a base station, control signaling scheduling a set of downlink transmissions according to a periodic scheduling configuration;
means for receiving, from the base station, downlink control information scheduling a cross-link interference measurement in a communications resource; and
means for monitoring for a downlink transmission of the set of downlink transmissions or performing the cross-link interference measurement using the communications resource based at least in part on a priority scheme associated with cross-link interference measurement and a collision between the downlink transmission and the communications resource.
30 . A non-transitory computer-readable medium storing code for wireless communications at a user equipment (UE), the code comprising instructions executable by a processor to:
receive, from a base station, control signaling scheduling a set of downlink transmissions according to a periodic scheduling configuration;
receive, from the base station, downlink control information scheduling a cross-link interference measurement in a communications resource; and
monitor for a downlink transmission of the set of downlink transmissions or performing the cross-link interference measurement using the communications resource based at least in part on a priority scheme associated with cross-link interference measurement and a collision between the downlink transmission and the communications resource.