Patent ID: 8072935

Claim:
A mobile communication system, comprising: a mobile station; base stations; and a core network that transmits data destined for the mobile station to at least both a handover source base station and a handover destination base station among the base stations at a time of a handover of the mobile station, the handover source base station transmitting the data to the mobile station using a shared channel, wherein during the handover of the mobile station, the handover source base station alternately sets an interruption period in which transmission of the data to the mobile station using the shared channel is interrupted and a period in which the transmission is performed, wherein the handover destination base station performs transmission of the data to the mobile station using the shared channel in the interruption period during the handover of the mobile station, and wherein a plurality of ones of the interruption period in which transmission of the data to the mobile station using the shared channel is interrupted and a plurality of ones of the period in which the transmission is performed are alternately set during the handover of the mobile station.