RADIO COMMUNICATION SYSTEM, BASE STATION APPARATUS, AND DOWNSTREAM TRANSMISSION DIRECTING CHARACTERISTIC CONTROL METHOD USED THEREFOR

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EP 1 596 618 A8

(12)	CORRECTED EUROPEAN PATENT APPLICATION
	published in accordance with Art. 158(3) EPC

(15)	Correction information:
	Corrected version no 1 (W1 A1)

(48)	Corrigendum issued on:
	17.05.2006 Bulletin 2006/20

(43)	Date of publication:
	16.11.2005 Bulletin 2005/46

(21)	Application number: 04702827.9

(22)	Date of filing: 16.01.2004

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International Patent Classification (IPC):

H04Q 7/36^(1995.01)

(86)	International application number:
	PCT/JP2004/000307

(87)	International publication number:
	WO 2004/068883 (12.08.2004 Gazette 2004/33)

(84)	Designated Contracting States:
	DE FI GB SE

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Priority:

29.01.2003 JP 2003019606

(71)	Applicant: NEC CORPORATION
	Minato-ku, Tokyo 108-8001 (JP)

(72)	Inventor:
	TAKAI, Kenichi; Tokyo; 1088001 (JP)

(74)	Representative: Wenzel & Kalkoff
	Patentanwälte Postfach 73 04 66 D-22124 Hamburg D-22124 Hamburg (DE)

(54)	RADIO COMMUNICATION SYSTEM, BASE STATION APPARATUS, AND DOWNSTREAM TRANSMISSION DIRECTING CHARACTERISTIC CONTROL METHOD USED THEREFOR

(57) A communication bit rate computing unit (24) computes the cumulative bit rate of downlink communication data, at which a base station communicates with a terminal, and totalizes the bit rates for each sector area. A amplitude/phase control unit (23) checks whether the cumulative bit rate for each sector area, reported from the communication bit rate computing unit (24), is higher than a first threshold or lower than a second threshold. If the cumulative bit rate is higher than the first threshold, the amplitude/phase control unit (23) performs directing characteristic control so as to narrow the area range of the corresponding sector area to a range smaller than a standard area range. If the cumulative bit rate is lower than the second threshold, the amplitude/phase control unit (23) performs directing characteristic control so as to widen the area range of the corresponding sector area to a range larger than the standard area range.