US 12,439,358 B2
Determination of trust relationship of non-3GPP access networks in 5GC
Helena Vahidi Mazinani, Lund (SE); David Castellanos Zamora, Madrid (ES); Ivo Sedlacek, Hovorcovice (CZ); Christine Jost, Dalby (SE); Vesa Lehtovirta, Espoo (FI); Noamen Ben Henda, Vällingby (SE); Monica Wifvesson, Lund (SE); and Cheng Wang, Shanghai (CN)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Appl. No. 17/801,073
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Feb. 19, 2021, PCT No. PCT/EP2021/054109
§ 371(c)(1), (2) Date Aug. 19, 2022,
PCT Pub. No. WO2021/165446, PCT Pub. Date Aug. 26, 2021.
Claims priority of application No. PCT/CN2020/076206 (WO), filed on Feb. 21, 2020.
Prior Publication US 2023/0080836 A1, Mar. 16, 2023
Int. Cl. H04W 60/04 (2009.01); H04W 12/08 (2021.01); H04W 60/06 (2009.01); H04W 76/12 (2018.01)
CPC H04W 60/04 (2013.01) [H04W 12/08 (2013.01); H04W 60/06 (2013.01); H04W 76/12 (2018.02)] 16 Claims
OG exemplary drawing
 
1. A method of establishing a connection between a User Equipment (UE) and a serving network via a Non-3GPP Access Network (N3AN) the method implemented by the UE and comprising:
during an initial registration with the serving network, using a trusted registration procedure for trusted non-3GPP access;
receiving, via a Trusted Non-3GPP Gateway Function (TNGF), a trust indication message from the serving network via the N3AN using a secure access link established by the serving network via the N3AN responsive to the trusted registration procedure, said trust indication message identifying the N3AN as trusted or untrusted as determined by the serving network;
when the received trust indication message indicates the N3AN is untrusted, executing an untrusted registration procedure with the serving network via the N3AN using the secure access link to establish the connection between the UE and the serving network;
when the received trust indication message indicates the N3AN is trusted, continuing execution of the initial registration with the serving network via the N3AN using the trusted registration procedure to establish the connection between the UE and the serving network; and
exchanging messages with the serving network via the established connection.