US 12,295,066 B2
AMF node and method thereof
Toshiyuki Tamura, Tokyo (JP); and Tsuyoshi Takakura, Tokyo (JP)
Assigned to NEC CORPORATION, Tokyo (JP)
Appl. No. 17/629,610
Filed by NEC Corporation, Tokyo (JP)
PCT Filed Dec. 18, 2020, PCT No. PCT/JP2020/047499
§ 371(c)(1), (2) Date Jan. 24, 2022,
PCT Pub. No. WO2021/132096, PCT Pub. Date Jul. 1, 2021.
Claims priority of application No. 2019-237392 (JP), filed on Dec. 26, 2019.
Prior Publication US 2022/0248497 A1, Aug. 4, 2022
Int. Cl. H04W 12/06 (2021.01); H04W 12/08 (2021.01); H04W 76/34 (2018.01)
CPC H04W 76/34 (2018.02) [H04W 12/06 (2013.01); H04W 12/08 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A first communication apparatus comprising:
a memory; and
at least one processor coupled to the memory and configured to:
receive, from a second communication apparatus, a first message indicating revocation of an authorization of a first Single Network Slice Selection Assistance Information (S-NSSAI) for a User Equipment (UE);
send, to a Session Management Function (SMF), a second message requesting to release a Protocol Data Unit (PDU) session after the first communication apparatus receives the first message; and
send, to the UE, a UE Configuration Update Command message in a case where the authorization is revoked,
wherein the second message includes a first cause information element indicating the revocation of the authorization,
wherein the PDU session is associated to the first S-NSSAI,
wherein the UE Configuration Update Command message includes a second cause information element indicating the revocation of the authorization, and
wherein the UE Configuration Update Command message includes a timer indicating a period to control a Protocol Data Unit (PDU) session for the first S-NSSAI.