US 12,143,874 B2
Core network apparatus, communication control method, non-transitory computer readable medium, and radio communication system
Toshitaka Hanada, Tokyo (JP)
Assigned to NEC CORPORATION, Tokyo (JP)
Appl. No. 17/618,002
Filed by NEC Corporation, Tokyo (JP)
PCT Filed Mar. 3, 2020, PCT No. PCT/JP2020/008781
§ 371(c)(1), (2) Date Dec. 10, 2021,
PCT Pub. No. WO2020/255490, PCT Pub. Date Dec. 24, 2020.
Claims priority of application No. 2019-113508 (JP), filed on Jun. 19, 2019.
Prior Publication US 2022/0256409 A1, Aug. 11, 2022
Int. Cl. H04W 36/00 (2009.01); H04W 36/08 (2009.01); H04W 84/04 (2009.01)
CPC H04W 36/0061 (2013.01) [H04W 36/0079 (2018.08); H04W 36/08 (2013.01); H04W 84/042 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A core network apparatus comprising:
at least one memory storing instructions, and
at least one processor configured to execute the instructions to;
acquire, when a service network that provides a service for a communication terminal and the communication terminal are connected to each other, identification information of the communication terminal and identification information of a base station included in a connection request message transmitted from the base station connected to the communication terminal;
detect whether a first service associated with the identification information of the communication terminal coincides with a second service associated with the identification information of the base station; and
transmit connection information of a service network that provides the second service to the base station when the first service coincides with the second service, wherein
the identification information of the communication terminal comprises System Architecture Evolution (SAE)-Temporary Mobile Subscriber Identity (S-TMSI),
the connection information comprises first address information indicating address information of a gateway apparatus included in the service network,
the at least one processor configured to execute the instructions to transmit the first address information when the S-TMSI has been acquired and the first service coincides with the second service, the identification information of the communication terminal comprises International Mobile Subscriber Identity (IMSI),
the connection information comprises second address information indicating address information that is available in the service network,
the at least one processor configured to execute the instructions to transmit the second address information when the at least one processor has not acquired the S-TMSI, has acquired the IMSI, and the first service coincides with the second service,
the connection request message is an INITIAL UE MESSAGE message, and
the at least one processor configured to execute the instructions to acquire the IMSI from a EPS (Evolved Packet System) mobile identity IE (Information Element) when the S-TMSI IE of the INITIAL UE MESSAGE is not configured and the EPS mobile identity IE is configured.