Communication system, mobile station, base station, and communication method
First Claim
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1. A communication system comprising:
- a determination unit, provided in any one of a first base station, a second base station, and a mobile station, configured to determine a transmission timing change amount based on a first reception timing of a first signal and a second reception timing of a second signal, the first signal being transmitted between the first base station and the mobile station, the second signal being transmitted between the second base station and the mobile station,wherein the mobile station comprises a handover execution unit configured to perform a handover from the first base station to the second base station based on the transmission timing change amount calculated by the determination unit.
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Abstract
A communication system includes: a determination unit, provided in any one of a first base station, a second base station, and a mobile station, which determines a transmission timing change amount on the basis of reception timing of a signal transmitted between the first or second base station and the mobile station. The mobile station includes a handover execution unit which performs a handover from the first base station to the second base station on the basis of the transmission timing change amount calculated by the determination unit.
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Citations
9 Claims
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1. A communication system comprising:
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a determination unit, provided in any one of a first base station, a second base station, and a mobile station, configured to determine a transmission timing change amount based on a first reception timing of a first signal and a second reception timing of a second signal, the first signal being transmitted between the first base station and the mobile station, the second signal being transmitted between the second base station and the mobile station, wherein the mobile station comprises a handover execution unit configured to perform a handover from the first base station to the second base station based on the transmission timing change amount calculated by the determination unit. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A mobile station which communicates with first and second base stations, the mobile station comprising:
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a measurement unit configured to measure a first reception timing of a first signal and a second reception timing of a second signal, the first signal being transmitted by the first base station, the second signal being transmitted by the second base station; a determination unit configured to determine a transmission timing change amount based on the first and second reception timings measured by the measurement unit; and a handover execution unit configured to perform a handover from the first base station to the second base station based on the transmission timing change amount calculated by the determination unit.
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8. A base station which communicates with a mobile station and another base station, the base station comprising:
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a reception unit configured to receive a first reception timing of a first signal and a second reception timing of a second signal, the first signal being transmitted between the base station and the mobile station, the second signal being transmitted between the another base station and the mobile station; a determination unit configured to determine a transmission timing change amount based on the first and second reception timings received by the reception unit; and a transmission unit configured to transmit the transmission timing change amount determined by the determination unit to the mobile station.
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9. A communication method comprising:
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determining, by any one of a first base station, a second base station, and a mobile station, a transmission timing change amount based on a first reception timing of a first signal and a second reception timing of a second signal, the first signal being transmitted between the first base station and the mobile station, the second signal being transmitted between the second base station and the mobile station; and performing, by the mobile station, a handover from the first base station to the second base station based on the transmission timing change amount calculated in the determination.
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Specification