Patent ID: 8588784
Filing Date: 2013-11-19
Classification: H04L,H04W

Abstract:
1. A mobile communication system capable of transferring data to be sent to mobile terminal equipment from one wireless base station to another wireless base station during hand over, said mobile communication system comprising: three or more base stations, the three or more base stations including a transfer source wireless base station, an initial transfer destination wireless base station and a secondary transfer destination wireless base station, the transfer source wireless base station including: an accumulation portion that holds said data until said data normally arrives at said mobile terminal equipment, wherein the initial transfer destination wireless base station of a transfer destination of said data receives a delivery confirmation response from said mobile terminal equipment and notifies a result of said delivery confirmation response to the transfer source wireless base station of a transfer source of said data, after transferring the data transmitted from the transfer source wireless base station data to said mobile terminal equipment, and wherein the transfer source wireless base station transfers the data held in said accumulation portion to the secondary transfer destination wireless base station of an other transfer destination, to which said mobile terminal equipment makes a hand over, based on the result of said delivery confirmation response notified from the initial transfer destination wireless base station, and wherein the transfer source wireless base station holds only the undelivered data in said accumulation portion, and restarts a timer for waiting for a reconnection request from said mobile terminal equipment and a connection request from the secondary transfer destination wireless base station when the data transferred to the initial transfer destination wireless base station is not delivered to said mobile terminal equipment.