Radio communication system, frequency allocation method and frequency allocation device

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6658257
SERIAL NO

09446295

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Among cellular radio communication systems, there are those in which a plurality of businesses, e.g. businesses A, B and C share a designated frequency band, and each business provides radio communication services using respectively allotted frequency bands. In this type of radio communication system, there are cases in which mobile stations belonging to different businesses use channels which have adjacent frequencies, in which case adjacent channel interference of a large interference level is produced. Therefore, in this radio communication system, of the frequency bands allotted to each business, the adjacent frequency bands which are adjacent to frequency bands allotted to other businesses are allotted to low power communications, while non-adjacent frequency bands which are not adjacent to frequency bands allotted to other businesses are allotted to high power communications.

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Patent Owner(s)

  • NTT DOCOMO, INC.;NTT MOBILE COMMUNICATIONS NETWORK INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hirayama, Tomoaki Kanagawa, JP 26 200
Nagata, Kiyohito Kanagawa, JP 8 187
Takami, Tadao Kanagawa, JP 22 278

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