US 12,069,471 B2
Handling of NAS container in registration request at AMF re-allocation
Peter Hedman, Helsingborg (SE); Vlasios Tsiatsis, Solna (SE); Monica Wifvesson, Lund (SE); Qian Chen, Mölndal (SE); Noamen Ben Henda, Vällingby (SE); and Ivo Sedlacek, Hovorcovice (CZ)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Appl. No. 17/620,587
Filed by TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
PCT Filed Jun. 12, 2020, PCT No. PCT/EP2020/066306
§ 371(c)(1), (2) Date Dec. 17, 2021,
PCT Pub. No. WO2020/254204, PCT Pub. Date Dec. 24, 2020.
Claims priority of provisional application 62/862,482, filed on Jun. 17, 2019.
Prior Publication US 2022/0322080 A1, Oct. 6, 2022
Int. Cl. H04M 1/66 (2006.01); H04W 12/03 (2021.01); H04W 12/041 (2021.01); H04W 12/106 (2021.01); H04W 36/00 (2009.01)
CPC H04W 12/03 (2021.01) [H04W 12/041 (2021.01); H04W 12/106 (2021.01); H04W 36/0038 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method, implemented by an Initiating Access and Mobility Management Function (AMF) in a wireless communication network, for handling a Non-Access Stratum (NAS) Container during AMF re-allocation for a wireless device, the method comprising:
receiving a registration request message from the wireless device, wherein the registration request message comprises an encrypted NAS Container that includes slicing information associated with the wireless device;
sending a context transfer request message to a Last Serving AMF, wherein the context transfer request message comprises the registration request message and the encrypted NAS Container;
receiving a context transfer response message from the Last Serving AMF, wherein the context transfer response message comprises a decrypted NAS Container; and
routing the registration request via an Access Network (AN) to a Target AMF based on the slicing information in the decrypted NAS Container.