BASE STATION DEVICE, RADIO COMMUNICATION SYSTEM AND RADIO TRANSMISSION METHOD

Title:

BASE STATION DEVICE, RADIO COMMUNICATION SYSTEM AND RADIO TRANSMISSION METHOD

Document Type and Number:

WIPO Patent Application WO/2006/038694

Kind Code:

A1

Abstract:

[PROBLEMS] To provide wireless data communication at a high frequency efficiency and to permit all the mobile station devices existing within a cell to perform wireless data communication without being affected by propagation path characteristic deterioration. [MEANS FOR SOLVING PROBLEMS] A base station device (1) transmits radio signals by using a multicarrier modulation method. The base station device is provided with a time managing part (12) for acquiring and managing time information; a transmission power setting part (11) for setting a first transmission power by which the radio signals can reach throughout a range within a cell for a part of subcarriers among all the subcarriers; and transmitting parts (2b, 4, 8, 9, 10) for transmitting the radio signals by using the subcarrier to which the first transmission power is allocated. The transmission power setting part (11) changes the subcarrier for setting the first transmission power at fixed time intervals based on the acquired time information.

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Inventors:

SHITARA SHOICHI (JP)

Application Number:

PCT/JP2005/018646

Publication Date:

April 13, 2006

Filing Date:

October 07, 2005

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Assignee:

SHARP KK (JP)
SHITARA SHOICHI (JP)

International Classes:

H04J11/00; H04J1/00; H04W52/24; H04W52/34; H04W52/36; H04W52/42

Foreign References:

JP2004214746A	2004-07-29
JP2004200856A	2004-07-15
JP2004260692A	2004-09-16
JPH08110504A	1996-04-30
JP2005244958A	2005-09-08

Other References:

CHEN Q. ET AL: "Multi-Carrier DS-CDMA with Adaptive Sub-Carrier Hopping for Fading Channels", SIXTH IEEE INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS, 1995. PIMRC' WIRELESS: MERGING ONTO THE INFORMATION SUPERHIGHWAY', vol. 1, 29 September 1995 (1995-09-29), pages 76 - 80, XP010150797
See also references of EP 1798884A4

Attorney, Agent or Firm:

Fukuchi, Takeo (Shibuya-ku, Tokyo 31, JP)

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