Patent ID: 8498236
Filing Date: 2013-07-30
Classification: H04B,H04W

Abstract:
1. A mobile communication system in which a relay node and a first radio base station are connected via a radio bearer and the first radio base station and a second radio base station are connected, wherein: the relay node comprises: the first radio base station comprises: the second radio base station comprises an X2AP layer function, and a control signal relating to a handover process is configured to terminate between the X2AP layer function of the relay node and the X2AP layer function of the first radio base station and between the X2AP layer function of the first radio base station and the X2AP layer function of the second radio base station; and the SCTP layer function of the relay node and the SCTP layer function of the first radio base station are configured to perform keep-alive processes for the radio bearer.