Patent ID: 8577373

Claim:
A handover destination specification system that performs a process for specifying a handover destination, the handover destination specification system comprising: a mobile terminal that measures a reception quality of each cell indicating an accessible range formed by a plurality of base stations capable of being connection targets of the mobile terminal, and when the measured reception quality satisfies a predetermined condition, generates a first message including identification information of the cell that satisfies the predetermined condition and information on the reception quality of the cell, and transmits the first message to a connection base station to which the mobile terminal is currently connected; and a connection base station that generates a second message including information for detecting unique global identification information of the cell of which the reception quality has been measured, based on the first message, and transmits the second message to the mobile terminal, wherein: the mobile terminal detects the global identification information of the cell of which the reception quality has been measured based on the second message, checks access permission for the detected cell, and when access permission is confirmed, generates a third message including the global identification information of the cell for which access permission is granted, and transmits the third message to the connection base station; the mobile terminal includes, in the first message, reliability information indicating reliability of cell information of cells for which access permission had been granted in the past, held by the mobile terminal; the connection base station judges whether or not reliability of the cell information is low based on the reliability information of the first message, and when judged that reliability is low, includes, in the second message, a cell list of cells of which the global identification information is to be detected; and the mobile terminal detects the global identification information based on the cell list, and checks access permission of the cell corresponding to the detected global identification information.