Patent ID: 8472403
Filing Date: 2013-06-25
Classification: H04W

Abstract:
1. A mobile communication system comprising: a radio base station apparatus performing hard handover processing in synchronization with a mobile terminal under radio communication therewith; and a control apparatus transmitting a first hard handover processing start timing to the radio base station apparatus, wherein the radio base station apparatus calculates, based on a processing load status of the radio base station apparatus, a possibility of delay in performing the hard handover processing at the first hard handover processing start timing, and when there is a possibility of delay, performs the hard handover processing at a second hard handover processing start timing later than the first hard handover processing start timing, wherein the radio base station apparatus transmits a start timing change request of the hard handover processing to the control apparatus on calculating there is a possibility of delay, and the control apparatus transmits the second hard handover processing start timing to the radio base station apparatus according to the start timing change request from the radio base station apparatus.