Radio communication system and radio base station apparatus

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11791870
APP PUB NO 20160056871A1
SERIAL NO

14779441

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A radio communication system includes a first radio base station having multiple antenna elements, and user equipment, wherein, for initial connection of the user equipment to the first radio base station, the first radio base station applies different precoding vectors to a downlink user common signal transmitted to all users located in or near a serving area of the first radio base station, and transmits the downlink user common signal while changing the applied precoding vector; wherein the user equipment selects a desired one of the precoding vectors applied to the downlink user common signal, and reports a selection result to the first radio base station, and wherein the first radio base station precodes a data signal addressed to the user equipment using the selected precoding vector and transmits the precoded data signal to the user equipment.

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Patent Owner(s)

  • NTT DOCOMO INC.

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Benjebbour, Anass Tokyo, JP 64 666
Kakishima, Yuichi Tokyo, JP 205 1328
Kishiyama, Yoshihisa Tokyo, JP 353 5157
Nagata, Satoshi Tokyo, JP 1803 8790

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