POWER EFFICIENT MEASUREMENTS AT HIGHER FREQUENCIES
Power efficient measurements may be implemented for high frequency operations. A WTRU may determine measurement occasions, DRX cycle/configuration transitions, DRX pause/resume, DRX timer operation, and/or BFR based on scheduling activity, beam configuration, BFI detection, BFD, beam loss, etc. A WTRU may be configured with multiple DRX cycles and measurement opportunities (e.g., with different periodicities). The WTRU may perform (e.g., RS) measurement(s) with determined/configured timing (e.g., DRX on-durations) in a first DRX cycle based on condition(s). The WTRU may switch to a second DRX cycle and perform RS measurement(s) with determined/configured timing based on condition(s) (e.g., counted number of BFIs detected in first DRX cycle). The WTRU may switch from the second (e.g., short) DRX cycle to the first (e.g., long) DRX cycle or to non-DRX operation e.g., DRX suspension or reset DRX inactivity timer) based on condition(s) (e.g., number of BFIs in first and/or second DRX cycle(s)).
1 - 15 . (canceled)
16 . A wireless transmit/receive unit (WTRU) comprising a processor configured to:
receive measurement configuration information, the measurement configuration information indicating one or more criteria for determining a measurement period associated with one or more reference signal (RS) measurements;
perform one or more RS measurements;
determine a measurement period for one or more subsequent measurements based on the RS measurements and the criteria indicated in the configuration information.
17 . The WTRU as in claim 16 , further configured to transmit a PRACH preamble based on the one or more subsequent measurements performed in accordance with the determined measurement period.
18 . The WTRU as in claim 16 , wherein the criteria comprises the one or more of the RS measurements being above a first configured threshold or a change in the one or more RS measurements since an immediately prior RS measurement being less than a configured threshold.
19 . The WTRU as in claim 16 , wherein the determined measurement period associated with the one or more subsequent measurements is longer if the criteria is satisfied based on the RS measurements than if the criteria is not satisfied.
20 . The WTRU as in claim 19 , wherein the determined measurement period for the one or more subsequent measurements is associated with one or more of beam failure detection (BFD), beam failure recovery (BFR) or radio link monitoring (RLM).
21 . The WTRU as in claim 20 , wherein the RS measurements determines that the WTRU is in a low mobility state or if the serving cell radio link quality is greater than the associated criteria.
22 . The WTRU as in claim 16 , wherein the criteria related to at least one of channel status information reference signals (CSI-RS) and synchronization signal blocks (SSBs).
23 . The WTRU as in claim 22 , wherein the RS measurements are reference signal received power (RSRP).
24 . A method for use of a wireless transmit/receive unit (WTRU) comprising:
receiving measurement configuration information from a network, the measurement configuration information indicating one or more criteria for determining a measurement period associated with one or more reference signal (RS) measurements;
performing one or more RS measurements;
determining a measurement period for one or more subsequent measurements based on the RS measurements and the criteria indicated in the configuration information.
25 . The method as in claim 24 , further comprising
transmitting a PRACH preamble based on the one or more subsequent measurements performed in accordance with the determined measurement period.
26 . The method as in claim 25 , wherein the criteria comprises the one or more of the RS measurements being above a first configured threshold or a change in the one or more RS measurements since an immediately prior RS measurement being less than a configured threshold.
27 . The WTRU as in claim 24 , wherein the determined measurement period associated with the one or more subsequent measurements is longer if the criteria is satisfied based on the RS measurements than if the criteria is not satisfied.
28 . The WTRU as in claim 27 , wherein the determined measurement period for the one or more subsequent measurements are is associated with one or more of beam failure detection (BFD), beam failure recovery (BFR) or radio link monitoring (RLM).
29 . The WTRU as in claim 28 , wherein the RS measurements determines that the WTRU is in a low mobility state or if the serving cell radio link quality is greater than the associated criteria.
30 . The WTRU as in claim 24 , wherein the criteria is related to at least one of channel status information reference signals (CSI-RS) and synchronization signal blocks (SSBs) and the RS measurements are reference signal received power (RSRP).