Gateway and Control Device, and Communication Controlling Methods for the Same

摘要

In order to implement handover to a femto cell without making any modification to UEs, a gateway (50) relays traffic between a core network (60, 70) and a plurality of base stations (20—1-20—4) that are respectively incorporated into the core network (60, 70) through a public network. The gateway (50) generates an RRC Connection Release message for prompting establishment of a new RRC connection, when it is notified from the core network (60, 70) that a mobile station (10) is handed over to any one of the plurality of base stations (20—1-20—4). Then, the gateway (50) causes the core network (60, 70) to instruct a control device (40), which has established an RRC connection to the mobile station (10), to transfer the RRC Connection Release message to the mobile station (10).

主权项

1. A gateway that relays traffic between a core network and a plurality of base stations respectively incorporated into the core network through a public network, the gateway comprising:
a first communication unit that communicates with the plurality of base stations through the public network; a second communication unit that communicates with the core network; and a control unit that controls the first and second communication units to relay the traffic, wherein the control unit is configured to: generate an RRC (Radio Resource Control) Connection Release message for prompting establishment of a new RRC connection, when it is notified from the core network that a mobile station is handed over to any one of the plurality of base stations; and cause the core network to instruct a control device to transfer the RRC Connection Release message to the mobile station, the control device having established an RRC connection to the mobile station.