Wireless communication system, accommodation apparatus and wireless communication method

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United States of America Patent

PATENT NO 11736191
APP PUB NO 20220368422A1
SERIAL NO

17622537

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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n wavelengths set such that delay differences between optical signals due to wavelength dispersion in an optical fiber between accommodation and base stations are at equal intervals are assigned to n antenna elements of the base station which are at predetermined intervals. The accommodation station adjusts the phases of optical signals of the wavelengths or modulated signals that modulate the optical signals such that the amounts of phase shift of their RF signals are at predetermined intervals. The accommodation station transmits beacon signals multiple times while varying a transmission phase shift interval α1 and the terminal transmits beacon number information of a beacon signal selected based on received power multiple times. The accommodation station varies a reception phase shift interval α2 for each piece of beacon number information to determine a reception phase shift interval α2 which maximizes the received power and determines the transmission phase shift interval α1 based on the beacon number information received from the terminal.

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Patent Owner(s)

  • NEC CORPORATION AND NIPPON TELEGRAPH AND TELEPHONE CORPORATION

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ito, Kota Musashino, JP 34 38
Kita, Naoki Musashino, JP 46 20
Shirato, Yushi Musashino, JP 27 11
Suga, Mizuki Musashino, JP 14 13

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