Synchronization method, mobile station apparatus and base station apparatus
First Claim
1. A synchronization method for transmitting a synchronization signal by controlling a transmission direction of a transmitting beam for the synchronization signal by means of beamforming using a plurality of antenna elements provided in a mobile station apparatus, the synchronization method comprising:
- a synchronization signal processing step of generating the synchronization signal including identification information of the mobile station apparatus, and changing a beamforming weight for the synchronization signal at predetermined time intervals; and
a transmitting step of transmitting the synchronization signal generated in accordance with each beamforming weight on uplink.
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Abstract
The present invention is designed to allow a communication system employing massive-MIMO to optimize its performance. A mobile station apparatus transmits a synchronization signal by controlling the transmission direction of the transmitting beam for the synchronization signal by means of beamforming using a plurality of antenna elements, and has a synchronization signal processing section (62) that generates the synchronization signal including identification information of the mobile station apparatus, and changes the beamforming weight for the synchronization signal at predetermined time intervals, and a transmitting section (63) that transmits the synchronization signals generated in accordance with each beamforming weight on the uplink.
15 Citations
10 Claims
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1. A synchronization method for transmitting a synchronization signal by controlling a transmission direction of a transmitting beam for the synchronization signal by means of beamforming using a plurality of antenna elements provided in a mobile station apparatus, the synchronization method comprising:
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a synchronization signal processing step of generating the synchronization signal including identification information of the mobile station apparatus, and changing a beamforming weight for the synchronization signal at predetermined time intervals; and a transmitting step of transmitting the synchronization signal generated in accordance with each beamforming weight on uplink. - View Dependent Claims (2, 3, 4, 5)
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6. A mobile station apparatus that transmits a synchronization signal by controlling a transmission direction of a transmitting beam for the synchronization signal by means of beamforming using a plurality of antenna elements, the mobile station apparatus comprising:
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a processor configured to generate the synchronization signal including identification information of the mobile station apparatus, and to change a beamforming weight for the synchronization signal at predetermined time intervals; and a transmitter that transmits the synchronization signal generated in accordance with each beamforming weight on uplink. - View Dependent Claims (7, 8)
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9. A base station apparatus that transmits a transmitting signal by controlling a transmission direction of a transmitting beam by means of beamforming using a plurality of antenna elements, the base station apparatus comprising:
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a receiver that receives a synchronization signal including identification information of a mobile station apparatus; a processor configured to acquire terminal information, including the identification information of the mobile station apparatus, from the synchronization signal; and a transmitter that controls the transmission direction of the transmitting signal by using a beamforming weight to match the terminal information. - View Dependent Claims (10)
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Specification