Patent ID: 9750069
Date: 2017-08-29
CPC Classifications: H04W

Claim:
1. A radio communication system comprising: a first base station that operates a first cell; a second base station that operates a second cell; a core network including a mobility management apparatus and a data transfer apparatus; and a mobile station, wherein the first base station is configured to establish a first signaling bearer with the mobility management apparatus, establish a second signaling bearer with the second base station, and to establish a signaling radio bearer with the mobile station in the first cell, the second base station is configured to establish the second signaling bearer with the first base station, establish a data bearer with the data transfer apparatus, and to establish a data radio bearer with the mobile station in the second cell, the first base station is further configured to transmit, to the second base station through the second signaling bearer, configuration information to establish the data bearer and the data radio bearer in the second base station; and the first base station is further configured to transmit, to the mobility management apparatus through the first signaling bearer, an E-UTRAN Radio Access Bearer (E-RAB) indication including an address and a Tunnel Endpoint Identifier (TEID) of the second base station.