Patent ID: 9467920
Filing Date: 2016-10-11
CPC Classification: H04B,H04W

Claim Text:
1. A relay node which is registered to a first radio base station and a first mobility management device and which relays a communication between a first mobile station and the first radio base station, the relay node comprising: a first control unit configured to store mobile station information indicating that the first mobile station is communicating with the first radio base station, to execute a handover process for the relay node and decide to hand over the first mobile station communicating with the first radio base station from the first radio base station to a second radio base station when a degradation of radio quality between the relay node and the first radio base station is detected, to generate a handover control signal for handing over the first mobile station communicating with the first radio base station from the first radio base station to the second radio base station, based on the mobile station information, and to transmit the handover control signal to the second radio base station or the first mobility management device, wherein the first control unit prevents user data of the first mobile station which is received from the first radio base station from being forwarded to the second radio base station in association with the handing over the first mobile station from the first radio base station to the second radio base station.