US 12,317,366 B2
Graceful leaving procedure for multiple USIM UE
Qian Chen, Mölndal (SE); Christofer Lindheimer, Vadstena (SE); Stefan Rommer, Västra Frölunda (SE); Paul Schliwa-Bertling, Ljungsbro (SE); Magnus Stattin, Upplands Väsby (SE); and Alessio Terzani, Stockholm (SE)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Appl. No. 17/763,064
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Sep. 7, 2020, PCT No. PCT/EP2020/074982
§ 371(c)(1), (2) Date Mar. 23, 2022,
PCT Pub. No. WO2021/069163, PCT Pub. Date Apr. 15, 2021.
Claims priority of provisional application 62/913,936, filed on Oct. 11, 2019.
Prior Publication US 2022/0408519 A1, Dec. 22, 2022
Int. Cl. H04W 88/06 (2009.01); H04W 76/27 (2018.01); H04W 76/34 (2018.01); H04W 84/04 (2009.01)
CPC H04W 76/34 (2018.02) [H04W 76/27 (2018.02); H04W 84/042 (2013.01); H04W 88/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method performed by a processor in a user equipment, UE, having multiple universal subscriber identity modules, USIMs, the method comprising:
receiving information from a first public land mobile network, PLMN, associated with a first USIM of the multiple USIMs, indicating there is one of mobile terminating, MT, signaling or data in the first PLMN while the UE is actively communicating with a second PLMN associated with a second USIM of the multiple USIMs;
responsive to receiving the information, sending a service request to an access and mobility management function, AMF, node of the second PLMN, the service request comprising information indicating which service classes the UE has selected to be notified while the UE is in the idle or inactive state;
receiving a radio resource control, RRC, connection release from a radio access network, RAN, node of the second PLMN in response to sending the service request.