Cross link interference measurements by low-tier user equipment

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

at least one memory; and

at least one processor coupled to the at least one memory and, based at least in part on information stored in the at least one memory, the at least one processor being configured to:

obtain a cross link interference (CLI) measurement based on a set of resource blocks (RBs) associated with a downlink (DL) channel from a network node, wherein the set of RBs includes one of (1) less than a total number of RBs configured for a signal strength CLI measurement or (2) at least the total number of RBs configured for a power CLI measurement, wherein the set of RBs is within a CLI time period that exceeds a CLI time threshold; and

activate, based on the CLI measurement, a time division duplex (TDD) slot format associated with a TDD configuration or a communication schedule from the network node.

2 . The apparatus of claim 1 , wherein the CLI time period is a measurement and reporting CLI time period that is configured by the network node for one or high-function UEs, wherein the CLI time threshold is a measurement and reporting CLI time threshold that is configured by the network node.

3 . The apparatus of claim 1 , wherein the set of RBs is scheduled for a most recent physical downlink shared channel (PDSCH) assigned for the UE.

4 . The apparatus of claim 3 , wherein the set of RBs includes at least one of:

a first number of RBs that is less than or equal to 25 physical RBs (PRBs), wherein a subcarrier spacing (SCS), for a CLI measurement occasion over the set of RBs, is 15 kHz; or

a second number of RBs that is less than or equal to 11 PRBs, wherein the subcarrier spacing (SCS), for the CLI measurement occasion over the set of RBs, is 30 kHz.

5 . The apparatus of claim 1 , wherein the set of RBs is scheduled for a most recently monitored control resource set (CORESET) associated with the UE.

6 . The apparatus of claim 1 , wherein the set of RBs is included in an overlapped set of contiguous physical RBs (PRBs) between a resource that corresponds to the CLI and at least one of (i) a most recent physical downlink shared channel (PDSCH) assigned for the UE or (ii) a most recently monitored control resource set (CORESET) associated with the UE.

7 . The apparatus of claim 1 , wherein the at least one processor is further configured to:

provide, for the network node, an indication of the obtained CLI measurement; and

receive, from the network node, the TDD configuration or the communication schedule, wherein the activated TDD slot format is based on the received TDD configuration or the activated communication schedule is based on the received communication schedule.

8 . The apparatus of claim 1 , wherein to obtain the CLI measurement, the at least one processor is configured to measure the CLI measurement or estimate the CLI measurement.

9 . The apparatus of claim 8 , wherein the CLI measurement is at least one of a layer 3 (L3) received signal strength indicator (RSSI) CLI measurement, a dynamic layer 1 (L1) RSSI CLI measurement, or a dynamic layer 2 (L2) RSSI CLI measurement.

10 . The apparatus of claim 1 , wherein the set of RBs includes at least the total number of RBs configured for a slot of the DL channel, wherein the CLI measurement is a CLI sounding reference signal (SRS) measurement, and wherein to obtain the CLI SRS measurement, the at least one processor is configured to perform at least one of:

obtain the CLI SRS measurement within an entirety of a radio frequency (RF) bandwidth, of the UE, associated with a relaxed measurement timeline for an enhanced reduced capability UE; or

obtain the CLI SRS measurement on at least one of:

a first number of RBs that is larger than 25 physical RBs (PRBs) and is associated with the relaxed measurement timeline for the enhanced reduced capability UE, wherein a subcarrier spacing (SCS), for the CLI SRS measurement occasion over the set of RBs, is 15 kHz, or

a second number of RBs that is larger than 11 PRBs and is associated with the relaxed measurement timeline for the enhanced reduced capability UE, where the SCS, for the CLI SRS measurement occasion over the set of RBs, is 30 KHz.

11 . The apparatus of claim 10 , wherein the relaxed measurement timeline includes:

a baseline time period between at least one of (i) a first end of downlink control information (DCI) that indicates performance of the CLI measurement and a provision of the CLI measurement for the network node, (ii) a second end of a resource that corresponds to the CLI SRS measurement and the provision of the CLI measurement for the network node, or (iii) the first end of the DCI that indicates performance of the CLI measurement and the resource that corresponds to the CLI SRS measurement; and

a relaxation time period that is based on a number of RBs associated with the SRS or associated with the entirety of the RF bandwidth.

12 . The apparatus of claim 11 , wherein the relaxation time period is further based on a subcarrier spacing (SCS) associated with the UE.

13 . The apparatus of claim 1 , wherein the UE is an enhanced reduced capability UE configured for at least one Internet of Things (IoT) functionality.

14 . An apparatus for wireless communication at a network node, comprising:

at least one memory; and

at least one processor coupled to the at least one memory and, based at least in part on information stored in the at least one memory, the at least one processor being is configured to:

receive, from a user equipment (UE), a cross link interference (CLI) measurement based on a set of resource blocks (RBs) associated with a downlink (DL) channel from the network node, wherein the set of RBs includes one of (1) less than a total number of RBs configured for a signal strength CLI measurement or (2) at least the total number of RBs configured for a power CLI measurement, wherein the set of RBs is within a CLI time period that exceeds a CLI time threshold; and

configure, based on the CLI measurement for the UE or another UE associated with CLI measurements, a time division duplex (TDD) slot format or a communication schedule.

15 . The apparatus of claim 14 , wherein the CLI time period is a measurement and reporting CLI time period that is configured by the network node for one or more high-function UEs, wherein the CLI time threshold is a measurement and reporting CLI time threshold that is configured by the network node.

16 . The apparatus of claim 14 , wherein the set of RBs is scheduled for a most recent physical downlink shared channel (PDSCH) assigned for the UE.

17 . The apparatus of claim 16 , wherein the set of RBs includes at least one of:

a first number of RBs that is less than or equal to 25 physical RBs (PRBs), wherein a subcarrier spacing (SCS), for a CLI measurement occasion over the set of RBs, is 15 kHz; or

a second number of RBs that is less than or equal to 11 PRBs, wherein the subcarrier spacing (SCS), for the CLI measurement occasion over the set of RBs, is 30 KHz.

18 . The apparatus of claim 14 , wherein the set of RBs is scheduled for a most recently monitored control resource set (CORESET) associated with the UE.

19 . The apparatus of claim 14 , wherein the set of RBs is included in an overlapped set of contiguous physical RBs (PRBs) between a resource that corresponds to the CLI and at least one of (i) a most recent physical downlink shared channel (PDSCH) assigned for the UE or (ii) a most recently monitored control resource set (CORESET) associated with the UE.

20 . The apparatus of claim 14 , wherein the at least one processor is further configured to:

provide, for the UE, at least one DL signal, associated with the CLI measurement, that includes the set of RBs; and

provide, for the UE, a TDD configuration or the communication schedule, wherein the configured TDD slot format is based on the provided TDD configuration or the configured communication schedule is based on the provided communication schedule.

21 . The apparatus of claim 14 , wherein to receive the CLI measurement, the at least one processor is configured to receive an estimate of the CLI measurement.

22 . The apparatus of claim 21 , wherein the CLI measurement is at least one of a layer 3 (L3) received signal strength indicator (RSSI) CLI measurement, a dynamic layer 1 (L1) RSSI CLI measurement, or a dynamic layer 2 (L2) RSSI CLI measurement.

23 . The apparatus of claim 14 , wherein the set of RBs includes at least the total number of RBs configured for a slot of the DL channel, wherein the CLI measurement is a CLI sounding reference signal (SRS) measurement, and wherein the CLI SRS measurement is based on at least one of:

the CLI SRS measurement within an entirety of a radio frequency (RF) bandwidth, of the UE, associated with a relaxed measurement timeline for an enhanced reduced capability UE; or

the CLI SRS measurement on at least one of:

a first number of RBs that is larger than 25 physical RBs (PRBs) and is associated with the relaxed measurement timeline for the enhanced reduced capability UE, wherein a subcarrier spacing (SCS), for the CLI SRS measurement occasion over the set of RBs, is 15 kHz, or

a second number of RBs that is larger than 11 PRBs and is associated with the relaxed measurement timeline for the enhanced reduced capability UE, where the SCS, for the CLI SRS measurement occasion over the set of RBs, is 30 kHz.

24 . The apparatus of claim 23 , wherein the relaxed measurement timeline includes:

a baseline time period between at least one of (i) a first end of downlink control information (DCI) that indicates performance of the CLI measurement and a provision of the CLI measurement for the network node, (ii) a second end of a resource that corresponds to the CLI SRS measurement and the provision of the CLI measurement for the network node, or (iii) the first end of the DCI that indicates performance of the CLI measurement and the resource that corresponds to the CLI SRS measurement; and

a relaxation time period that is based on a number of RBs associated with the SRS or associated with the entirety of the RF bandwidth.

25 . The apparatus of claim 24 , wherein the relaxation time period is further based on a subcarrier spacing (SCS) associated with the UE.

26 . The apparatus of claim 14 , wherein the UE is an enhanced reduced capability UE configured for at least one Internet of Things (IoT) functionality.

27 . A method of wireless communication at a user equipment (UE), comprising:

obtaining a cross link interference (CLI) measurement based on a set of resource blocks (RBs) associated with a downlink (DL) channel from a network node, wherein the set of RBs includes one of (1) less than a total number of RBs configured for a signal strength CLI measurement or (2) at least the total number of RBs configured for a power CLI measurement, wherein the set of RBs is within a CLI time period that exceeds a CLI time threshold; and

activating, based on the CLI measurement, a time division duplex (TDD) slot format associated with a TDD configuration or a communication schedule from the network node.

28 . The method of claim 27 , wherein the CLI time period is a measurement and reporting CLI time period that is configured by the network node for one or more high-function UEs, wherein the CLI time threshold is a measurement and reporting CLI time threshold that is configured by the network node.

29 . A method of wireless communication at a network node, comprising:

receiving, from a user equipment (UE), a cross link interference (CLI) measurement based on a set of resource blocks (RBs) associated with a downlink (DL) channel from the network node, wherein the set of RBs includes one of (1) less than a total number of RBs configured for a signal strength CLI measurement or (2) at least the total number of RBs configured for a power CLI measurement, wherein the set of RBs is within a CLI time period that exceeds a CLI time threshold; and

configuring, based on the CLI measurement for the UE or another UE associated with CLI measurements, a time division duplex (TDD) slot format or a communication schedule.

30 . The method of claim 29 , wherein the CLI time period is a measurement and reporting CLI time period that is configured by the network node for one or more high-function UEs, wherein the CLI time threshold is a measurement and reporting CLI time threshold that is configured by the network node.