Patent ID: 9253695
Filing Date: 2016-02-02
CPC Classification: H04B,H04W

Claim Text:
1. A mobile communication system including a mobile relay node that relays communication between a base station and a mobile station, the system comprising: a duplication determination unit that determines whether a situation where a plurality of relay nodes having the same identification information exist in a service area of one base station occurs before the mobile relay node moves from one base station to another and makes an inter-base station handover; an identification information change unit that changes identification information of a relay node so that identification information are different from each other when the duplication determination unit determines that the situation where a plurality of relay nodes having the same identification information exist in one base station occurs; a handover unit that makes an inter-base station handover of the relay node that moves from one base station to another after the identification information of the relay node is changed; and a service continuation unit that makes a handover of a mobile station communicating with a relay node whose identification information is to be changed by the identification information change unit in a service area of the relay node from the relay node to a base station and thereby continues a service for the mobile station by the base station, and, after the identification information of the relay node is changed, makes a handover of the mobile station having been communicating with the relay node in the service area from the base station to the relay node and thereby restarts a service by the relay node.