US 11,800,440 B2
AMF relocation with N3IWF handling
Daniel Nilsson, Älvängen (SE); Qian Chen, Mölndal (SE); Stefan Rommer, Västra Frölunda (SE); and Paul Schliwa-Bertling, Ljungsbro (SE)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed on Nov. 9, 2021, as Appl. No. 17/522,592.
Application 17/522,592 is a continuation of application No. 16/611,711, granted, now 11,178,603, previously published as PCT/EP2018/061509, filed on May 4, 2018.
Claims priority of provisional application 62/503,631, filed on May 9, 2017.
Prior Publication US 2022/0070768 A1, Mar. 3, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 48/18 (2009.01); H04W 76/11 (2018.01); H04W 8/08 (2009.01); H04W 8/22 (2009.01); H04W 12/06 (2021.01); H04W 60/00 (2009.01); H04W 84/04 (2009.01)
CPC H04W 48/18 (2013.01) [H04W 8/08 (2013.01); H04W 8/22 (2013.01); H04W 12/06 (2013.01); H04W 60/00 (2013.01); H04W 76/11 (2018.02); H04W 84/042 (2013.01)] 10 Claims
OG exemplary drawing
 
5. A method performed by a Non-3rd Generation Partnership Project (3GPP) Interworking Function (N3IWF) enabling a wireless communication device (WCD) to attach to a core network over non-3GPP access, to facilitate re-location of the wireless communication device from a source Access and Mobility Management Function (AMF) currently serving the WCD over non-3GPP access to a target AMF which is to serve the WCD over 3GPP access, comprising:
receiving, from the target AMF, a redirect request to redirect signalling of the WCD from the source AMF currently serving the WCD to the target AMF;
after receiving the redirect request, receiving signalling transmitted by the WCD; and
as a result of receiving the redirect request transmitted by the target AMF, transmitting the received signalling to the target AMF rather than the source AMF.