Patent ID: 8433362

Claim:
A handover control apparatus installed in a terminal for performing handover between communication stations from a serving station to a target station for wireless communication of the terminal, the target station selected, for next communication with the terminal, from among adjacent stations that are adjacent to the serving station, the apparatus comprising: a memory controller that stores in a memory unit a serving station reception level by a radio unit as a serving station reception history and an adjacent station reception level by the radio unit as an adjacent station reception history, the serving station reception level and the adjacent station reception level respectively rating a reception level of an electric wave by the radio unit from the communication stations; a necessity determination unit that determines if a handover is necessary based on the serving station reception level; a radio wave reception determination unit that determines a transition trend and a stability of the serving station reception level and of the adjacent station reception level based on the serving station reception history and the adjacent station reception history when the handover is determined to be necessary; a target station selection unit that selects the adjacent station as the target station when the adjacent station reception level is determined to be in an upturn trend and stable by the radio wave reception determination unit; and a handover perform unit that performs the handover when the radio wave reception determination unit determines (a) that the serving station reception level is in a downturn trend and (b) that the serving station reception level at a determination timing for determining that the handover is necessary is lower than the target station reception level.