US 12,225,415 B2
Access network node, user equipment, network function node and control method
Iskren Ianev, Reading (GB); Toshiyuki Tamura, Tokyo (JP); Hassan Al-Kanani, Chinthurst (GB); and Linghang Fan, Surrey (GB)
Assigned to NEC CORPORATION, Tokyo (JP)
Appl. No. 17/630,189
Filed by NEC Corporation, Tokyo (JP)
PCT Filed Jul. 20, 2021, PCT No. PCT/JP2021/027211
§ 371(c)(1), (2) Date Jan. 26, 2022,
PCT Pub. No. WO2022/030254, PCT Pub. Date Feb. 10, 2022.
Claims priority of application No. 20189550 (EP), filed on Aug. 5, 2020.
Prior Publication US 2023/0362766 A1, Nov. 9, 2023
Int. Cl. H04W 36/00 (2009.01)
CPC H04W 36/0011 (2013.01) [H04W 36/13 (2023.05)] 11 Claims
OG exemplary drawing
 
1. A User equipment (UE) comprising:
one or more memories storing instructions; and
one or more processors configured to process the instructions to control the UE to:
transmit, to an Access and Mobility Management Function (AMF), a first message comprising both a Single-Network Slice Selection Assistance Information (S-NSSAI) for a Protocol Data Unit (PDU) session and an Alternative S-NSSAI for the PDU session; and
receive, from the AMF, a second message comprising the Alternative S-NSSAI for the PDU session based on a determination to replace the S-NSSAI for the PDU session with the Alternative S-NSSAI for the PDU session, the determination being performed by the AMF based on the first message.