Patent ID: 8346258

Claim:
A communication system, comprising: a radio communication device configured to execute an application, and to execute a communication with a communication target device through a radio base station; and a threshold management server configured to manage a handover threshold corresponding to the application, wherein the threshold management server comprises: a server side receiver configured to receive, from the radio communication device, an execution notification including a type of the application executed in the radio communication device; a storage configured to store the handover threshold in association with the application; and a server side transmitter configured to transmit a threshold notification response to the radio communication device on the basis of the execution notification received by the server side receiver, the threshold notification response including the handover threshold stored in the storage, and the radio communication device comprises: a device side transmitter configured to transmit the execution notification to the threshold management server; a device side receiver configured to receive the threshold notification response from the threshold management server; a radio condition information acquisition unit configured to acquire radio condition information indicating a condition of a radio signal which is transmitted to or received from the radio base station; and a handover execution unit configured to execute handover to another radio base station on the basis of the handover threshold included in the threshold notification response received by the device side receiver and the radio condition information acquired by the radio condition information acquisition unit.