US 11,991,518 B2
Apparatus and method
Sander De Kievit, Tokyo (JP); Anand Raghawa Prasad, Tokyo (JP); and Sheeba Backia Mary Baskaran, Tamil Nadu (IN)
Assigned to NEC CORPORATION, Tokyo (JP)
Appl. No. 17/288,995
Filed by NEC Corporation, Tokyo (JP)
PCT Filed Nov. 6, 2019, PCT No. PCT/JP2019/043451
§ 371(c)(1), (2) Date Apr. 27, 2021,
PCT Pub. No. WO2020/095938, PCT Pub. Date May 14, 2020.
Claims priority of application No. 201811041964 (IN), filed on Nov. 6, 2018.
Prior Publication US 2021/0409942 A1, Dec. 30, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 12/72 (2021.01); H04W 8/18 (2009.01); H04W 12/06 (2021.01)
CPC H04W 12/06 (2013.01) [H04W 8/18 (2013.01); H04W 12/72 (2021.01)] 9 Claims
OG exemplary drawing
 
1. A communication device comprising:
a memory storing one or more instructions; and
a processor configured to execute the one or more instructions to:
receive and updated Routing identifier (ID) from a core network apparatus;
verify a Message Authentication Code for Integrity (MAC-I) relevant to the updated Routing ID;
store the updated Routing ID in a universal subscriber identity module kUSIM) in a case in which the MAC-I is verified successfully;
obtain a Subscription Concealed Identifier (SUCI) by concatenating a concealed Subscription Permanent Identifier (SUPI) and the updated Routing ID; and
transmit the SUCI to the core network apparatus.