Patent ID: 9313760
Filing Date: 2016-04-12
CPC Classification: H04W

Claim Text:
1. A communication system having a base station device that connects with a user terminal by a wireless line and a gateway device that connects said base station device with a plurality of core networks; wherein: at a time of registration in which said base station device requests to register itself in said plurality of core networks, said base station device reports to said gateway device, list information of core networks to which connection is to be implemented; at a time of call origination from said user terminal, said base station device reports to said gateway device, by means of a message of an end-to-end protocol used for communication between a base station device and gateway device, network identification information that indicates core networks that are to be connected with said user terminal; said gateway device transfers a control message from said user terminal to core networks that are indicated by said network identification information that was reported; and at a time of call connection to said user terminal, said gateway device, based on said list information that was reported from said base station device at the time of said registration, selects base station devices to which paging from said core networks is to be transmitted.