Patent ID: 8478274

Claim:
A handover control apparatus in a mobile communication system for providing a mixture of multiple different services including a communication quality guaranteed type service and a communication quality non-guaranteed type service, comprising: a service determination unit determining which of the communication quality guaranteed type service or the communication quality non-guaranteed type service a mobile station is using in communication; and a handover processing unit performing handover in accordance with either a network initiative type handover procedure or a mobile station initiative type handover procedure based on the determination, wherein if the mobile station is using the communication quality guaranteed type service, the handover processing unit performs the handover in accordance with the network initiative type handover procedure, and if the mobile station is using the communication quality non-guaranteed type service, the handover processing unit performs the handover in accordance with the mobile station initiative type handover procedure, and wherein the network initiative type handover causes a radio base station to instruct the mobile station to report communication quality of an adjacent cell and determine a handover destination cell and a handover timing based on the reported communication quality, and the mobile station initiative type handover causes the mobile station to measure the communication quality of the adjacent cell and autonomously determine the handover destination cell and the handover timing based on the measured communication quality.