US 12,471,171 B2
RRC layer based suspend and resume for multi-SIM UE
Juan Zhang, Beijing (CN); Ozcan Ozturk, San Diego, CA (US); Gavin Bernard Horn, La Jolla, CA (US); and Haris Zisimopoulos, London (GB)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Appl. No. 17/596,867
Filed by QUALCOMM Incorporated, San Diego, CA (US)
PCT Filed Jul. 15, 2019, PCT No. PCT/CN2019/095928
§ 371(c)(1), (2) Date Dec. 20, 2021,
PCT Pub. No. WO2021/007735, PCT Pub. Date Jan. 21, 2021.
Prior Publication US 2022/0312538 A1, Sep. 29, 2022
Int. Cl. H04W 76/27 (2018.01); H04W 8/18 (2009.01); H04W 28/02 (2009.01); H04W 68/00 (2009.01); H04W 76/30 (2018.01); H04W 88/06 (2009.01)
CPC H04W 76/27 (2018.02) [H04W 8/183 (2013.01); H04W 68/005 (2013.01); H04W 76/30 (2018.02); H04W 28/0268 (2013.01); H04W 88/06 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A method of wireless communication performed by a radio access network (RAN) node, comprising:
receiving, from a user equipment (UE) served by the RAN node, a request to suspend downlink transmissions related to a subscription associated with a first subscriber identity module (SIM) of the UE, the request informing the RAN node that the UE will be transitioning service to a wireless network serving a second SIM of the UE wherein the request to suspend the downlink transmissions includes an RRC UE assistance information message;
transmitting, from the RAN node to a core network node, a user plane suspend message based at least in part on the request to suspend the downlink transmissions, wherein the user plane suspend message includes one or more quality of service (QOS) flows or dedicated radio bearer (DRB) identifiers associated with the first SIM of the UE, wherein the request to suspend the downlink transmissions indicates the one or more QoS flows or DRB identifiers associated with the first SIM of the UE; and
transmitting, to the UE, a release message to enable the UE to transition the service to the wireless network serving the second SIM of the UE and to transition the UE to an inactive mode on the RAN based at least in part on a response message from the core network node indicating that the downlink transmissions related to the subscription of the UE have been suspended.