Cross-link interference (CLI) radio resource management (RRM) measurement
Systems, devices, and techniques for measuring and reporting cross-link interference (CLI) are described. A described technique includes determining, by a first wireless device, whether to perform a CLI measurement; determining a quantity of activated transmission configuration indicator (TCI) states associated with a second wireless device; performing the CLI measurement based on the quantity of activated TCI states; and transmitting a CLI report in response to the CLI measurement.
1. A method comprising:
determining whether to perform a cross-link interference (CLI) measurement;
determining a quantity of activated transmission configuration indicator (TCI) states associated with a wireless device is one, wherein the wireless device is a user equipment (UE) that is configured to receive data on a physical downlink shared channel (PDSCH), physical downlink control channel (PDCCH), or both;
performing the CLI measurement based on the quantity of activated TCI states, wherein performing the CLI measurement comprises measuring a CLI signal based on an assumption that a TCI state for the CLI signal is the same as an activated TCI state for a PDCCH for the wireless device; and
transmitting a CLI report in response to the CLI measurement.
2. The method of claim 1 , wherein performing the CLI measurement comprises measuring a CLI signal based on an assumption that a TCI state for the CLI signal is the same as an activated TCI state for a UE-specific PDSCH transmission.
3. The method of claim 1 , wherein performing the CLI measurement comprises using a same receive (Rx) beam for a PDSCH reception and the CLI measurement.
4. The method of claim 1 , wherein performing the CLI measurement comprises measuring a reference signal received power (RSRP) of a sounding reference signal (SRS), measuring a received signal strength indicator (RSSI) of a channel, or both.
5. The method of claim 1 , wherein performing the CLI measurement comprises measuring a reference signal received power (RSRP) of a sounding reference signal (SRS), and measuring a received signal strength indicator (RSSI) of a channel.
6. The method of claim 1 , wherein performing the CLI measurement comprises using a TCI state for the CLI measurement that is the same as a TCI state used for a previous PDSCH reception.
7. The method of claim 1 , wherein the CLI report provides information associated with a direction in which the CLI signal is measured.
8. An apparatus comprising one or more processors configured to perform operations comprising:
determining whether to perform a cross-link interference (CLI) measurement;
determining a quantity of activated transmission configuration indicator (TCI) states associated with a user equipment (UE) is one, wherein the UE is a user equipment (UE) that is configured to receive data on a physical downlink shared channel (PDSCH), physical downlink control channel (PDCCH), or both;
performing the CLI measurement based on the quantity of activated TCI states, wherein performing the CLI measurement comprises measuring a CLI signal based on an assumption that a TCI state for the CLI signal is the same as an activated TCI state for a PDCCH for the UE; and
transmitting a CLI report in response to the CLI measurement.
9. The apparatus of claim 8 , wherein based at least on determining that the quantity of activated TCI states is determined to be more than one, performing the CLI measurement comprises measuring a CLI signal based on an assumption that the CLI signal has a TCI state that is being used for a UE-specific PDSCH transmission.
10. The apparatus of claim 9 , wherein the UE-specific PDSCH transmission is on a same slot or symbol as the CLI signal.
11. The apparatus of claim 9 , wherein the TCI state that is used for the UE-specific PDSCH transmission is an active TCI state that is indicated by a network via a downlink control information (DCI) command.
12. The apparatus of claim 9 , wherein the TCI state that is used for the UE-specific PDSCH transmission is an active TCI that is indicated by a network via a downlink control information (DCI) command associated with a previous PDSCH transmission.
13. The apparatus of claim 8 , wherein determining the quantity of activated TCI states comprises determining whether the quantity of activated TCI states for a UE-specific PDSCH transmission is greater than one.
14. The apparatus of claim 13 , wherein performing the CLI measurement comprises making a measurement based on an assumption that a CLI signal to be measured has a same TCI state with a TCI state being used for a PDCCH for the UE.
15. The apparatus of claim 13 , wherein performing the CLI measurement comprises using a TCI state for a CLI signal to be measured that is the same as a TCI state used for a PDCCH reception in the same slot or symbol as the CLI signal.
16. The apparatus of claim 15 , wherein the TCI state used for the PDCCH reception is indicated via a downlink control information (DCI) command.
17. The apparatus of claim 8 , the operations comprising:
selecting an activated TCI state for performing the CLI measurement; and
indicating the selected activated TCI state in the CLI report.
18. The apparatus of claim 8 , wherein performing the CLI measurement comprises measuring a CLI signal based on an assumption that a TCI state for the CLI signal is the same as an activated TCI state for a UE-specific PDSCH transmission.
19. The apparatus of claim 8 , wherein performing the CLI measurement comprises using a same receive (Rx) beam for a PDSCH reception and the CLI measurement.