Technologies for reference signal indication
The present application relates to devices and components including apparatus, systems, and methods for reference signal indication for idle or inactive user equipments.
1. A method comprising:
receiving a signal from a base station, wherein the signal is a physical downlink control channel (PDCCH) or physical downlink shared channel (PDSCH) transmission;
detecting, in the PDCCH or PDSCH transmission, an indication that a tracking reference signal/channel state information-reference signal (TRS/CSI-RS) is conditionally available;
determining, based on the indication, that the TRS/CSI-RS is conditionally available at a configured occasion after a predetermined period of time; and
monitoring for the TRS or CSI-RS at the configured occasion.
2. The method of claim 1 , wherein the predetermined period of time is based on a configured parameter.
3. The method of claim 1 , wherein a condition upon which the TRS/CSI-RS is conditionally available at the configured occasion comprises a paging PDCCH PDSCH being transmitted in a paging occasion that follows the configured occasion.
4. The method of claim 3 , further comprising:
detecting the TRS/CSI-RS at the configured occasion; and
receiving the paging PDCCH or PDSCH in the paging occasion.
5. The method of claim 3 , further comprising:
failing to detect the TRS/CSI-RS at the configured occasion; and
either monitoring for the paging PDCCH or PDSCH in the paging occasion or not monitoring for the paging PDCCH or PDSCH in the paging occasion.
6. An apparatus comprising:
processing circuitry to:
determine that a tracking reference signal/channel state information-reference signal (TRS/CSI-RS) is to be transmitted at one or more configured occasions when a paging message is to be transmitted at a paging occasion;
determine a physical downlink control channel (PDCCH) within a monitoring occasion of the paging occasion is to be transmitted with a same beam as the TRS/CSI-RS;
identify the one or more configured occasions based on the monitoring occasion and a predetermined number of occasions, time duration, or time offset; and
monitor for the TRS/CSI-RS in at least one of the one or more configured occasions; and
interface circuitry coupled with the processing circuitry to enable communication.
7. The apparatus of claim 6 , wherein to determine the PDCCH is to be transmitted with the same beam as the TRS/CSI-RS, the processing circuitry is to:
determine that both the PDCCH and the TRS/CSI-RS correspond to a same SSB.
8. The apparatus of claim 6 , wherein the processing circuitry is to identify the one or more configured occasions based on a predetermined number of occasions that occur: at least the time offset before the monitoring occasion; or immediately before the monitoring occasion.
9. The apparatus of claim 6 , wherein to identify the one or more configured occasions the processing circuitry is to identify the one or more configured occasions that occur within a time window that includes a predetermined time duration and ends at least the time offset before the monitoring occasion.
10. The apparatus of claim 6 , wherein the processing circuitry is to identify the one or more configured occasions that occur within a time window that includes a predetermined time duration and ends immediately before the monitoring occasion.
11. The apparatus of claim 6 , wherein the processing circuitry is to identify the one or more configured occasions based on the time offset, which is predefined or configured by a base station.
12. The apparatus of claim 6 , wherein the processing circuitry is to identify the one or more configured occasions when a user equipment is in a radio resource control (RRC) idle or inactive state.
13. One or more non-transitory, computer-readable media having instructions that, when executed, cause processor circuitry to:
generate a signal to be transmitted to a user equipment (UE), wherein the signal is a physical downlink control channel (PDCCH) or physical downlink shared channel (PDSCH) transmission with an indication that a tracking reference signal/channel state information-reference signal (TRS/CSI-RS) is conditionally available at a configured occasion after a predetermined period of time;
determine a paging message is to be transmitted to the UE after the configured occasion; and
generate, based on determination that the paging message is to be transmitted to the UE, the TRS/CSI-RS to be transmitted to the UE at the configured occasion.
14. The one or more non-transitory, computer-readable media of claim 13 , wherein the instructions, when executed, further cause the processor circuitry to:
generate, for transmission to the UE, a parameter to configure the UE with the predetermined period of time.