Mobile control device and handover control method
First Claim
1. A base station in a mobile communication system that performs control of handover where a mobile terminal changes base stations which communicate with the mobile terminal, as the mobile terminal moves, and the base station comprising:
- a handover base station candidate decision unit that selects one or more handover base station candidates based on the communication state during communication with a mobile terminal;
a multicast unit that, based on data transmission condition received from each handover base station candidate, transmits communication data that is transmitted to the mobile terminal, to the one or more handover base station candidates; and
a handover base station decision unit that decides one of the plurality of handover base station candidates as a handover base station.
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Abstract
The present invention is a handover control method in a mobile communication system that performs handover control by switching base stations that communicate with a mobile terminal as the mobile terminal moves. In this handover control method, a mobile control device selects one or more handover base station candidates based on the communication state, and based on the communication capabilities of the handover base station candidates, decides a transmission rate for multicasting communication data, and transmits communication data to each of the handover base station candidates at the decided transmission rate, and a handover base station candidate that is decided as a handover base station sends the saved multicast communication data to the mobile terminal.
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Citations
5 Claims
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1. A base station in a mobile communication system that performs control of handover where a mobile terminal changes base stations which communicate with the mobile terminal, as the mobile terminal moves, and the base station comprising:
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a handover base station candidate decision unit that selects one or more handover base station candidates based on the communication state during communication with a mobile terminal; a multicast unit that, based on data transmission condition received from each handover base station candidate, transmits communication data that is transmitted to the mobile terminal, to the one or more handover base station candidates; and a handover base station decision unit that decides one of the plurality of handover base station candidates as a handover base station. - View Dependent Claims (2, 3, 4)
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5. A mobile communication system that comprises a mobile terminal and a base station which communicates with the mobile station, and performs control of handover where said mobile terminal changes base stations which communicate with the mobile terminal, as the mobile terminal moves, wherein said base station includes:
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a handover base station candidate decision unit that selects one or more handover base station candidates based on the communication state during communication with a mobile terminal; a multicast unit that, based on data transmission condition received from each handover base station candidate, transmits communication data that is transmitted to the mobile terminal, to the one or more handover base station candidates; and a handover base station decision unit that decides one of the plurality of handover base station candidates as a handover base station, and said mobile terminal includes a receiver that receives the communication data that is transmitted from a handover base station candidate that has been decided as the handover base station.
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Specification