Method for monitoring tracking reference signal and related device
A method for a user equipment (UE) of determining a tracking reference signal (TRS) resource set availability is provided. The method includes receiving, from a base station (BS), a TRS configuration that indicates one or more TRS resource sets for the UE to monitor reference signals; determining whether a Layer 1 (L1)-based availability indication for the one or more TRS resource sets is received from the BS; and determining the one or more TRS resource sets are unavailable when the UE determines that the L1-based availability indication has not been received from the BS.
1. A method performed by a user equipment (UE) for monitoring a tracking reference signal (TRS), the method comprising:
receiving, from a base station (BS), a TRS configuration that indicates one or more TRS resource sets for the UE to monitor the TRS;
determining whether a Layer 1 (L1)-based availability indication configured for the one or more TRS resource sets is received from the BS, wherein the L1-based availability indication comprises a TRS availability indication that is included in a downlink control information (DCI) format 1_0 received, from the BS, with a cyclic redundancy check (CRC) scrambled by a Paging-Radio Network Temporary Identifier (P-RNTI); and
determining that the one or more TRS resource sets are unavailable in response to determining that the L1-based availability indication has not been received from the BS.
2. The method of claim 1 , further comprising:
determining that the one or more TRS resource sets are available in response to determining that the L1-based availability indication has been received from the BS and the L1-based availability indication indicates a first value for the one or more TRS resource sets.
3. The method of claim 2 , further comprising:
determining a time period during which the one or more TRS resource sets are available, wherein the time period comprises at least one frame that is determined based on at least a validity duration parameter and a paging cycle parameter.
4. The method of claim 3 , wherein the validity duration parameter is configured by the BS via a system information block (SIB).
5. The method of claim 1 , wherein the one or more TRS resource sets include a channel state information-reference signal (CSI-RS) resource.
6. The method of claim 1 , wherein the L1-based availability indication includes a bitmap, each bit of the bitmap being associated with at least one corresponding TRS resource set of the one or more TRS resource sets.
7. The method of claim 1 , wherein the TRS configuration is received from the BS via a system information block (SIB).
8. The method of claim 1 , wherein the UE is operating in a radio resource control (RRC)_IDLE state or an RRC_INACTIVE state when determining whether the L1-based availability indication is received from the BS.
9. A user equipment (UE) for monitoring a tracking reference signal (TRS), the UE comprising:
at least one processor; and
at least one non-transitory computer-readable medium coupled to the at least one processor and storing one or more computer-executable instructions that, when executed by the at least one processor, cause the UE to:
receive, from a base station (BS), a TRS configuration that indicates one or more TRS resource sets for the UE to monitor the TRS;
determine whether a Layer 1 (L1)-based availability indication configured for the one or more TRS resource sets is received from the BS, wherein the L1-based availability indication comprises a TRS availability indication that is included in a downlink control information (DCI) format 1_0 received, from the BS, with a cyclic redundancy check (CRC) scrambled by a Paging-Radio Network Temporary Identifier (P-RNTI); and
determine that the one or more TRS resource sets are unavailable in response to determining that the L1-based availability indication has not been received from the BS.
10. The UE of claim 9 , wherein the one or more computer-executable instructions, when executed by the at least one processor, further cause the UE to:
determine that the one or more TRS resource sets are available in response to determining that the L1-based availability indication has been received from the BS and the L1-based availability indication indicates a first value for the one or more TRS resource sets.
11. The UE of claim 10 , wherein the one or more computer-executable instructions, when executed by the at least one processor, further cause the UE to:
determine a time period during which the one or more TRS resource sets are available, wherein the time period comprises at least one frame that is determined based on at least a validity duration parameter and a paging cycle parameter.
12. The UE of claim 11 , wherein the validity duration parameter is configured by the BS via a system information block (SIB).
13. The UE of claim 9 , wherein the one or more TRS resource sets include a channel state information-reference signal (CSI-RS) resource.
14. The UE of claim 9 , wherein the L1-based availability indication includes a bitmap, each bit of the bitmap being associated with at least one corresponding TRS resource set of the one or more TRS resource sets.
15. The UE of claim 9 , wherein the TRS configuration is received from the BS via a system information block (SIB).
16. The UE of claim 9 , wherein the UE is operating in a radio resource control (RRC)_IDLE state or an RRC_INACTIVE state when determining whether the L1-based availability indication is received from the BS.