(19)
(11) EP 1 443 681 A8

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

(48) Corrigendum issued on:
08.12.2004 Bulletin 2004/50

(43) Date of publication:
04.08.2004 Bulletin 2004/32

(21) Application number: 02775519.8

(22) Date of filing: 08.11.2002
(51) International Patent Classification (IPC)7: H04B 7/26
(86) International application number:
PCT/JP2002/011696
(87) International publication number:
WO 2003/041302 (15.05.2003 Gazette 2003/20)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

(30) Priority: 09.11.2001 JP 2001345231

(71) Applicant: NTT DoCoMo, Inc.
Tokyo 100-6150 (JP)

(72) Inventors:
  • MORIHIRO, Yoshifumi, IPD, NTT DoCoMo, Inc.
    Chiyoda-ku, Tokyo 100-6150 (JP)
  • HAYASHI, Takahiro, IPD, NTT DoCoMo, Inc.
    Chiyoda-ku, Tokyo 100-6150 (JP)
  • ISHIKAWA, Yoshihiro, IPD, NTT DoCoMo, Inc.
    Chiyoda-ku, Tokyo 100-6150 (JP)

(74) Representative: GROSSE BOCKHORNI SCHUMACHER 
Patent- und Rechtsanwälte Forstenrieder Allee 59
81476 München
81476 München (DE)

   


(54) INFORMATION RATE CONTROL METHOD, MOBILE STATION, RADIO CONTROL APPARATUS, BASE STATION AND MOBILE COMMUNICATION SYSTEM


(57) In order to suppress decrease in the number of receptible mobile stations in an entire mobile communication system due to oppression on the power resource at a base station by simple control without any large change in the scale of apparatus, an information rate control method in a mobile communication system comprising a base station and a mobile station located in a cell established by the base station and configured to implement radio communication between the base station and the mobile station, is provided as follows. The information rate control method has a step for the mobile station to measure a reception quality of a signal from the base station at a start of radio communication (S51); a step of calculating a reference quality as a reference for determination of an information rate in accordance with the reception quality, i.e., setting the reference quality lower as the reception quality becomes lower (S52); a step of determining an information rate corresponding to the reference quality (S53); and a step of notifying the base station of the determined information rate (S54).