LOCATION INFORMATION ACQUISITION METHOD AND MOBILE STATION
First Claim
1. A location information acquisition method by which a location information management server acquires location information on a mobile station, comprising the steps of:
- transmitting, from a first radio base station to the mobile station communicating via a first cell under control of the first radio base station, a handover command instructing to perform handover to a second cell under control of a second radio base station;
performing, at the mobile station, handover from the first cell to the second cell in response to the handover command;
acquiring, at the mobile station, a global cell ID, which can uniquely identify the second cell in at least one mobile communication system, from the handover command; and
notifying, from the mobile station to the location information management server, the acquired global cell ID which can uniquely identify the second cell.
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Accused Products
Abstract
Provided is a mobile communication method including: a step in which a first radio base station S-eNB transmits a handover instruction which instructs a mobile station UE performing communication via a first cell under control of a first radio base station SeNB, so as to perform a handover to a second cell under control of a second radio base station TeNB; a step in which the mobile station UE performs a handover from the first cell to the second cell in accordance with the handover instruction; a step in which the mobile station UE acquires a global cell ID which can uniquely identify a second cell in at least one mobile communication system; and a step in which the mobile station UE reports a global cell ID which can uniquely identify the acquired second cell, to a position information management server.
18 Citations
10 Claims
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1. A location information acquisition method by which a location information management server acquires location information on a mobile station, comprising the steps of:
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transmitting, from a first radio base station to the mobile station communicating via a first cell under control of the first radio base station, a handover command instructing to perform handover to a second cell under control of a second radio base station; performing, at the mobile station, handover from the first cell to the second cell in response to the handover command; acquiring, at the mobile station, a global cell ID, which can uniquely identify the second cell in at least one mobile communication system, from the handover command; and notifying, from the mobile station to the location information management server, the acquired global cell ID which can uniquely identify the second cell.
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2. A location information acquisition method by which a location information management server acquires location information on a mobile station, comprising the steps of:
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transmitting, from a first radio base station to the mobile station communicating via a first cell under control of the first radio base station, a handover command instructing to perform handover to a second cell under control of a second radio base station; performing, at the mobile station, handover from the first cell to the second cell in response to the handover command; transmitting, from the mobile station to the second radio base station, a handover completion report notifying that handover from the first cell to the second cell is completed; notifying, from the second radio base station to the mobile station, a global cell ID which can uniquely identify the second cell in at least one mobile communication system, after receiving the handover completion report; and notifying, from the mobile station to the location information management server, the notified global cell ID which can uniquely identify the second cell.
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3. A location information acquisition method by which a location information management server acquires location information on a mobile station, comprising the steps of:
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measuring, at the mobile station communicating via a first cell under control of a first radio base station, a reception quality of a pilot signal in the first cell and a reception quality of a pilot signal in a second cell under control of a second radio base station; receiving, at the mobile station, broadcast information in the second cell, when the reception quality of the pilot signal in the second cell is higher than the reception quality of the pilot signal in the first cell; acquiring, at the mobile station, a global cell ID, which can uniquely identify the second cell in at least one mobile communication system, from the broadcast information; reporting, from the mobile station to the first radio base station, results of the measurement of the reception qualities of the pilot signals in the first cell and the second cell; transmitting, from the first radio base station to the mobile station, a handover command instructing to perform handover to the second cell; performing, at the mobile station, handover from the first cell to the second cell in response to the handover command; and notifying, from the mobile station to the location information management server, the global cell ID which can uniquely identify the second cell.
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4. A location information acquisition method by which a location information management server acquires location information on a mobile station, comprising the steps of:
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transmitting, from a first radio base station to the mobile station communicating via a first cell under control of the first radio base station, a handover command instructing to perform handover to a second cell under control of a second radio base station; performing handover by the mobile station from the first cell to the second cell in response to the handover command; transmitting a handover completion report from the mobile station to the second radio base station, the handover completion report notifying that handover from the first cell to the second cell is completed; receiving, at the mobile station, broadcast information on the second cell after transmitting the handover completion report; acquiring, at the mobile station, a global cell ID which can uniquely identify the second cell in at least one mobile communication system, from the broadcast information; and notifying, from the mobile station to the location information management server, the acquired global cell ID which can uniquely identify the second cell.
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5. A location information acquisition method by which a location information management server acquires location information on a mobile station, comprising the steps of:
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instructing, from the location information management server to the mobile station, to notify the location information management server of location information on the mobile station, when starting positioning of the mobile station; acquiring, at the mobile station, a global cell ID which can uniquely identify a cell in at least one mobile communication system, from a radio base station, in response to the instruction from the location information management server; and notifying, from the mobile station to the location information management server, the acquired global cell ID which can making uniquely identify the cell.
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6. A mobile station configured to notify a location information management server of location information, comprising:
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a handover processor unit configured to perform handover from a first cell under control of a first radio base station to a second cell under control of a second radio base station, in accordance with a handover command instructing to perform handover to the second cell, when the mobile station receives the handover command while communicating via the first cell; a global cell ID acquisition unit configured to acquire a global cell ID which can uniquely identify the second cell in at least one mobile communication system, from the handover command; and a global cell ID notification unit configured to notify the location information management server of the acquired global cell ID which can uniquely identify the second cell.
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7. A mobile station configured to notify a location information management server of location information, comprising:
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a handover processor unit configured to perform handover from a first cell under control of a first radio base station to a second cell under control of a second radio base station, in accordance with a handover command instructing to perform handover to the second cell, when the mobile station receives the handover command while communicating via the first cell, and then to transmit a handover completion report to a second radio base station, the handover completion report notifying that handover from the first cell to the second cell is completed; a global cell ID acquisition unit configured to acquire a global cell ID, which can uniquely identify the second cell in at least one mobile communication system, through notification by the second radio base station having received the handover completion report; and a global cell ID notification unit configured to notify the location information management server of the acquired global cell ID which can uniquely identify the second cell.
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8. A mobile station configured to notify a location information management server of location information, comprising:
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a handover processor unit configured to measure a reception quality of a pilot signal in a first cell and a reception quality of a pilot signal in a second cell under control of a second radio base station, to report measurement results of the reception qualities of the pilot signals in the first cell and the second cell to a first radio base station, and then to perform handover from the first cell to the second cell in accordance with a handover command, which instructs to perform handover to the second cell upon receiving the handover command from the first radio base station, while the mobile station communicates via the first cell under control of the first radio base station; a global cell ID acquisition unit configured to receive broadcast information on the second cell when the reception quality of the pilot signal in the second cell is higher than the reception quality of the pilot signal in the first cell, and then to acquire a global cell ID from the broadcast information, the global cell ID making the second cell uniquely identifiable in at least one mobile communication system; and a global cell ID notification unit configured to notify the location information management server of the global cell ID which can uniquely identify the second cell.
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9. A mobile station configured to notify a location information management server of location information, comprising:
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a handover processor unit configured to perform handover from a first cell under control of a first radio base station to a second cell in accordance with a handover command, when the mobile station receives the handover command while communicating via the first cell, and then to transmit a handover completion report to a second radio base station, the handover command instructing to perform handover to the second cell, the handover completion report notifying that handover from the first cell to the second cell is completed; a global cell ID acquisition unit configured to receive broadcast information on the second cell after transmitting the handover completion report, and then to acquire a global cell ID, which can uniquely identify the second cell in at least one mobile communication system, from the broadcast information; and a global cell ID notification unit configured to notify the location information management server of the acquired global cell ID which can uniquely identify the second cell.
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10. A mobile station configured to notify a location information management server of location information, comprising:
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a global cell ID acquisition unit configured to acquire a global cell ID, which can uniquely identify a cell in at least one mobile communication system, from a radio base station in response to the instruction from the location information management server, when the location information management server instructs to notify the information management server of location information on the mobile station, and when he location information management server starts positioning of the mobile station; and a global cell ID notification unit configured to notify the location information management server of the acquired global cell ID which can uniquely identify the second cell.
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Specification