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1. (WO2010032810) BASE STATION APPARATUS, USER EQUIPMENT AND PRECODING METHOD
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2010/032810    International Application No.:    PCT/JP2009/066339
Publication Date: 25.03.2010 International Filing Date: 18.09.2009
IPC:
H04J 99/00 (2009.01), H04B 7/04 (2006.01), H04J 1/00 (2006.01), H04J 11/00 (2006.01), H04W 16/28 (2009.01)
Applicants: NTT DoCoMo Inc. [JP/JP]; 11-1, Nagatacho 2-chome, Chiyoda-ku, Tokyo 1006150 (JP) (For All Designated States Except US).
TAOKA, Hidekazu [JP/JP]; (JP) (For US Only).
KAKISHIMA, Yuichi [JP/JP]; (JP) (For US Only).
KAWAI, Hiroyuki [JP/JP]; (JP) (For US Only).
HIGUCHI, Kenichi [JP/JP]; (JP) (For US Only).
SAWAHASHI, Mamoru [JP/JP]; (JP) (For US Only)
Inventors: TAOKA, Hidekazu; (JP).
KAKISHIMA, Yuichi; (JP).
KAWAI, Hiroyuki; (JP).
HIGUCHI, Kenichi; (JP).
SAWAHASHI, Mamoru; (JP)
Agent: AOKI, Hiroyoshi; (JP)
Priority Data:
2008-242857 22.09.2008 JP
2008-282111 31.10.2008 JP
Title (EN) BASE STATION APPARATUS, USER EQUIPMENT AND PRECODING METHOD
(FR) APPAREIL DE STATION DE BASE, ÉQUIPEMENT UTILISATEUR ET PROCÉDÉ DE PRÉCODAGE
(JA) 基地局装置、ユーザ装置及びプリコーディング方法
Abstract: front page image
(EN)In an uplink MIMO transmission, the throughput characteristic is prevented from degrading even if the amount of feedback information related to a precoding is reduced.  A base station (200) comprises a scheduler (231) that adaptively decides resource blocks to be used in wireless communications with mobile stations (100); a precoding weight selecting unit (232) that decides, from the uplink reception qualities in the resource blocks decided for the mobile stations (100), precoding weights for use in controlling the phases and/or amplitudes of transport signals for the respective antennas in the mobile stations (100); and a transceiver unit (206a, 206b) that transmits the decided precoding weights to the mobile stations (100).
(FR)
(JA) 上りリンクMIMO伝送においてプリコーディングに関するフィードバック情報量を削減してもスループット特性が劣化しないようにすること。この基地局(200)は、各移動局(100)との間の無線通信に用いられるリソースブロックを適応的に決定するスケジューラ(231)と、移動局(100)に対して決定したリソースブロックでの上りリンクの受信品質から当該移動局(100)においてアンテナ毎に送信信号の位相及び又は振幅を制御するためのプリコーディングウエイトを決定するプリコーディングウエイト選択部(232)と、決定したプリコーディングウエイトを移動局(100)へ送信する送受信部(206a,206b)とを具備する。
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)