Wireless base station, mobile station, radio communication...

Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...

Reexamination Certificate

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Details

C370S341000, C370S344000, C370S431000, C375S346000, C455S450000

Reexamination Certificate

active

07961677

ABSTRACT:
The object of the present invention is to achieve reduction of interference between cells and improvement of maximum throughput so as to improve spectrum efficiency. A wireless base station which transmits a radio signal between itself and a plurality of mobile stations by means of OFDMA includes: a multiplexing part for generating user data; a channel assignment control part for selecting a plurality sets of sub-carriers among a plurality of sub-carriers so as to constitute a radio frame containing sub-channels assigned to each of the plurality sets of sub-carriers and for setting in the radio frame the user data and control data by means of orthogonal frequency division multiplexing; and a transmission part for transmitting a radio signal containing the radio frame; where, the channel assignment control part is constituted so that the radio frame is divided into 2 zones for the control and user data and all the sub-channels in the zone for control data are divided into groups for each of sectors; the control data is allocated on the corresponding divided groups; and the user data is allocated on all the sub-channels in the zone for user data.

REFERENCES:
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patent: 2007/0058592 (2007-03-01), Kim et al.
patent: 2008/0031190 (2008-02-01), Bae et al.
patent: 2008/0165734 (2008-07-01), Hart et al.
patent: 2010/0040080 (2010-02-01), Um et al.
patent: 2010/0272210 (2010-10-01), Kwon et al.
patent: 1978691 (2008-10-01), None
patent: 2005-80286 (2005-03-01), None
patent: 10-2007-0029023 (2007-03-01), None
patent: WO 2007/035302 (2007-03-01), None
“IEEE Standard for Local and Metropolitan area networks, Part 16: Air Interface for Fixed and Mobile Broadband Wireless Access Systems, Amendment 2: Physical and Medium Access Control Layers for Combined Fixed and Mobile Operation in Licensed Bands, 8.4.6.1.2”, IEEE Standard 802.16e-2005, IEEE, Feb. 28, 2006, 14 pgs.
“IEEE Standard for Local and Metropolitan area networks, Part 16: Air Interface for Fixed Broadband Wireless Access Systems, 8.4.6.1.2”, IEEE Standard 802.16-2004, IEEE, Oct. 1, 2004, 7 pgs.

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