US 12,232,036 B2
Methods for user equipment measurements on additional reference symbols during idle mode for power saving
Sina Maleki, Malmö (SE); Ali Nader, Malmö (SE); and Andres Reial, Malmö (SE)
Assigned to Telefonaktiebolaget LM Ericsson (Publ), Stockholm (SE)
Appl. No. 17/798,929
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Feb. 9, 2021, PCT No. PCT/EP2021/053068
§ 371(c)(1), (2) Date Aug. 11, 2022,
PCT Pub. No. WO2021/160606, PCT Pub. Date Aug. 19, 2021.
Claims priority of provisional application 62/976,444, filed on Feb. 14, 2020.
Prior Publication US 2023/0076100 A1, Mar. 9, 2023
Int. Cl. H04W 52/02 (2009.01); H04L 5/00 (2006.01); H04W 24/10 (2009.01)
CPC H04W 52/0229 (2013.01) [H04L 5/0048 (2013.01); H04W 24/10 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method performed in a wireless communication device for power saving when operating in idle mode in a wireless communication system, transmissions of a first set of reference symbols, RSs, and a second set of RSs being provided in the wireless communication system, the method comprising:
estimating transmission pattern of the second set of RSs by detecting presence or absence of the second set of RSs during idle mode;
determining when to wake up in idle mode to perform associated measurements based on the estimated transmission pattern of the second set of RSs;
the first set of RSs are provided periodically, and the second set of RSs are provided in any of periodic, semi-persistent or aperiodic transmission patterns;
the first set of RSs comprising Synchronization Signal Blocks, SSBs, and the second set of RSs comprising non-SSBs; and
the wireless communication device comprising a main receiver and a receiver operating at a lower power than the main receiver, and the detecting the presence or the absence of the second set of RSs during idle mode comprises waking up the receiver operating at the lower power than the main receiver of the wireless communication device at an expected arrival time of the second set of RSs.