Radio base station system and base station

摘要

A femto base station registers IDs of neighboring macro base stations and the ID of a terminal into a management device. When the femto base station detects that the communication state of a terminal in communication with the femto base station transited from active to idle, the femto base station hands off the communication session to one of the neighboring macro stations and enters the dormant state. When the macro base station detects that the communication state of the terminal transited from idle to active, the macro base station transmits an inquiry to the management device, identifies a femto base station to be started based on the terminal ID and the macro base station ID and starts the femto base station. When the femto base station is started, it is handed off from the macro base station to the femto base station to maintain the communication session of the terminal.

主权项

1. A radio communication system comprising:
at least one first base station; a second base station that is in a radio wave reachable range of the at least one first base station and has a radio wave reachable range shorter than the radio wave reachable range of the at least one first base station: and a management device configured to manage the at least one first base station and the second base station, wherein the second base station comprises:
a radio transmission unit;a radio reception unit;a measuring unit configured to measure a received power of the at least one first base station;a storing unit configured to store a result of the measured received power of the at least one first base station as neighboring base station information; anda notifying unit configured to notify the neighboring base station information to the management device; wherein the second base station further comprises:
a determining unit of the second base station configured to determine a state of a terminal of one or more terminals based on an amount of communication with the second base station; and a handing-off unit configured to select the at least one first base station to be handed off based on the neighboring base station information and to transmit a hand off request including an identification of the at least one first base station to the management device when the determining unit determines that the state of the terminal in communication is an idle state, wherein after handing off a communication session of the terminal having the idle state to the at least one first base station, the radio transmission unit and the radio reception unit are in a stopping state.