US 12,232,188 B2
Session establishment with a local serving network
Ralf Keller, Würselen (DE); and Maria Belen Pancorbo Marcos, Madrid (ES)
Assigned to Telefonaktiebolaget LM Ericsson (Publ), Stockholm (SE)
Appl. No. 17/619,399
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Nov. 13, 2019, PCT No. PCT/EP2019/081244
§ 371(c)(1), (2) Date Dec. 15, 2021,
PCT Pub. No. WO2020/259862, PCT Pub. Date Dec. 30, 2020.
Claims priority of application No. 19382540 (EP), filed on Jun. 26, 2019.
Prior Publication US 2022/0312510 A1, Sep. 29, 2022
Int. Cl. H04W 76/10 (2018.01); H04L 65/1016 (2022.01); H04W 40/02 (2009.01)
CPC H04W 76/10 (2018.02) [H04L 65/1016 (2013.01); H04W 40/02 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A terminal device configured to establish a communication session with a local serving network, the terminal device comprising processing circuitry configured to cause the terminal device to:
obtain a modification of a User Equipment Route Selection Policy, USRP, rule and a validity condition, the validity condition requiring that IP Multimedia Subsystem (IMS) voice over PS is supported in the local serving network;
obtain an indication of traffic to be communicated, the traffic being associated with a traffic descriptor;
select the first User Equipment Route Selection Policy (URSP) rule if the local serving network is a home network, or select a second URSP rule if the local serving network is a roaming network;
the selected URSP rule for the traffic to be communicated in a communication session with the local serving network, the selected URSP rule being selected in accordance with the traffic descriptor and in accordance with the validity condition, the validity condition pertaining to support for IMS in the local serving network;
establish a communication session with the local serving network for communicating the traffic according to the selected URSP rule; and
the communication session is a protocol data unit (PDU) session.