US 12,137,340 B2
First and second connections with an authentication management function
Noamen Ben Henda, Stockholm (SE); Vesa Torvinen, Sauvo (FI); and Monica Wifvesson, Lund (SE)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Appl. No. 16/970,538
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Feb. 15, 2019, PCT No. PCT/EP2019/053852
§ 371(c)(1), (2) Date Aug. 17, 2020,
PCT Pub. No. WO2019/158708, PCT Pub. Date Aug. 22, 2019.
Claims priority of provisional application 62/631,702, filed on Feb. 17, 2018.
Prior Publication US 2020/0413258 A1, Dec. 31, 2020
Int. Cl. H04W 12/06 (2021.01); H04W 12/037 (2021.01); H04W 12/106 (2021.01); H04W 36/00 (2009.01)
CPC H04W 12/06 (2013.01) [H04W 12/037 (2021.01); H04W 12/106 (2021.01); H04W 36/0038 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for use in a wireless device, the method comprising:
registering a first connection and a second connection with an authentication management function (AMF), wherein the first connection connects via a first access network, the second connection connects via a second access network, and the first connection and the second connection share a first security context;
performing a Security Mode Command (SMC) procedure with the AMF over the first access network, wherein the SMC procedure performed over the first access network causes a second security context to be taken into use on both the first connection and the second connection;
retaining the first security context prior to performing the SMC procedure;
starting a security context retainment timer;
using the first security context for security on the second connection and using the second security context for security on the first connection;
determining that the security context retainment timer has expired;
disposing of the first security context after performing the SMC procedure.