Patent ID: 8391869
Filing Date: 2013-03-05
Classification: H04W

Abstract:
1. A communication system provided with a mobile station and a plurality of radio base station devices, comprising: an inquiry receiving unit to receive an inquiry about a network address of a second radio base station device from a first radio base station device, upon a time of a mobile station under the control of the first radio base station device is handed over to the control of the second radio base station device as a trigger and when an interface between the first radio base station and the second radio base station was not established; a memory to correspond a network address of the first radio base station device to a network address of the second radio base station device, which is a handover target, and to store the correspondence; and a transmitting unit to obtain a network address of the second radio base station device from the database unit based on the inquiry and transmitting the obtained network address to the first radio base station device, wherein the first radio base station device establishes an interface with the second radio base station device.