US 12,250,749 B2
Method for determining an initiation of random access procedure for a user equipment configured with power savings, and network node thereof
Timo Koskela, Oulu (FI); Jussi-Pekka Koskinen, Oulu (FI); Sami-Jukka Hakola, Kempele (FI); Juha Pekka Karjalainen, Oulu (FI); and Jorma Johannes Kaikkonen, Oulu (FI)
Assigned to Nokia Technologies Oy, Espoo (FI)
Appl. No. 17/770,491
Filed by Nokia Technologies Oy, Espoo (FI)
PCT Filed Oct. 26, 2020, PCT No. PCT/FI2020/050705
§ 371(c)(1), (2) Date Apr. 20, 2022,
PCT Pub. No. WO2021/094649, PCT Pub. Date May 20, 2021.
Claims priority of provisional application 62/935,917, filed on Nov. 15, 2019.
Prior Publication US 2022/0386409 A1, Dec. 1, 2022
Int. Cl. H04W 76/28 (2018.01); H04W 52/02 (2009.01); H04W 56/00 (2009.01); H04W 74/0833 (2024.01)
CPC H04W 76/28 (2018.02) [H04W 52/0229 (2013.01); H04W 56/0045 (2013.01); H04W 74/0833 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method, comprising:
performing, by at least one processor of a user equipment (UE), at least one first monitoring of a power savings channel of a physical downlink control channel (PDCCH) for control information, the PDCCH being associated with at least one base station, the control information including a power saving downlink control information (PS-DCI) format, the control information providing an indication to start a timer for an ON duration of a discontinuous reception (DRX) cycle for the UE to monitor the PDCCH; and
performing, by the at least one processor, a random-access channel (RACH) procedure with the at least one base station based on the control information; and
wherein the RACH procedure causes the UE to prioritize physical random-access channel (PRACH) resources that correspond to downlink reference signals that are quasi co-located with PDCCH demodulation reference signal (DMRS) of the PDCCH used to monitor PS-DCI or with PDCCH DMRS used for monitoring the PDCCH according to a search space configuration during an active time.