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1. WO2013157482 - RADIO COMMUNICATION SYSTEM, RADIO BASE STATIONS AND MOBILE TERMINALS

Publication Number WO/2013/157482
Publication Date 24.10.2013
International Application No. PCT/JP2013/060960
International Filing Date 11.04.2013
IPC
H04W 28/16 2009.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
28Network traffic or resource management
16Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS
H04B 7/08 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
08at the receiving station
H04J 99/00 2009.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
99Subject matter not provided for in other groups of this subclass
H04W 16/28 2009.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
16Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cell structures
24Cell structures
28using beam steering
H04W 24/10 2009.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
24Supervisory, monitoring or testing arrangements
10Scheduling measurement reports
CPC
H04B 1/62
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
62for providing a predistortion of the signal in the transmitter and corresponding correction in the receiver, e.g. for improving the signal/noise ratio
H04B 7/024
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
022Site diversity; Macro-diversity
024Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
H04B 7/0452
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
0413MIMO systems
0452Multi-user MIMO systems
H04B 7/0617
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
06at the transmitting station
0613using simultaneous transmission
0615of weighted versions of same signal
0617for beam forming
H04B 7/0626
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
06at the transmitting station
0613using simultaneous transmission
0615of weighted versions of same signal
0619using feedback from receiving side
0621Feedback content
0626Channel coefficients, e.g. channel state information [CSI]
H04B 7/0628
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
06at the transmitting station
0613using simultaneous transmission
0615of weighted versions of same signal
0619using feedback from receiving side
0621Feedback content
0628Diversity capabilities
Applicants
  • 株式会社エヌ・ティ・ティ・ドコモ NTT DOCOMO, INC. [JP]/[JP]
Inventors
  • 佐野 洋介 SANO, Yousuke
  • 大渡 裕介 OHWATARI, Yusuke
  • 三木 信彦 MIKI, Nobuhiko
  • 森本 彰人 MORIMOTO, Akihito
  • 奥村 幸彦 OKUMURA, Yukihiko
Agents
  • 大林 章 OHBAYASHI, Akira
Priority Data
2012-09417217.04.2012JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) RADIO COMMUNICATION SYSTEM, RADIO BASE STATIONS AND MOBILE TERMINALS
(FR) SYSTÈME DE RADIOCOMMUNICATION, STATIONS DE BASE RADIO ET TERMINAUX MOBILES
(JA) 無線通信システム、無線基地局および移動端末
Abstract
(EN)
A radio communication system comprises a plurality of mobile terminals, each of which has an interference rejection combining function, and a plurality of radio base stations. The plurality of radio base stations share the downlink channel characteristics of the plurality of mobile terminals connected to the radio base stations. Each of the radio base stations imparts weights to the respective ones of radio waves to be transmitted via a plurality of transmission antennas so as to in-phase add interference radio wave beams, which are to be transmitted to a mobile terminal regarding another radio base station as a desired radio base station, to interference radio wave beams to be transmitted from a still other radio base station, thereby restricting the number of interference radio wave beams that are to come to the mobile terminal. It should be noted that when the number of interference radio wave beams for which the mobile terminal can reject the interference is equal to or greater than the number of radio base stations that transmit the interference radio wave beams to the mobile terminal, the in-phase addition is not performed.
(FR)
L'invention porte sur un système de radiocommunication qui comporte une pluralité de terminaux mobiles, dont chacun possède une fonction de combinaison à rejet de brouillage, et une pluralité de stations de base radio. La pluralité de stations de base radio partage les caractéristiques de canal de liaison descendante de la pluralité de terminaux mobiles connectés aux stations de base radio. Chacune des stations de base radio applique des poids aux ondes radio respectives parmi les ondes radio devant être émises par une pluralité d'antennes d'émission de façon à ajouter en phase des faisceaux d'onde radio à brouillage, qui doivent être émis à destination d'un terminal mobile concernant une autre station de base radio qu'une station de base radio souhaitée, à des faisceaux d'onde radio à brouillage devant être émis par encore une autre station de base radio, limitant ainsi le nombre de faisceaux d'onde radio à brouillage qui parviendront au terminal mobile. On notera que, lorsque le nombre de faisceaux d'onde radio à brouillage pour lesquels le terminal mobile peut rejeter le brouillage est supérieur ou égal au nombre de stations de base radio qui émettent les faisceaux d'onde radio à brouillage à destination du terminal mobile, l'ajout en phase n'est pas effectué.
(JA)
複数の移動端末と複数の無線基地局とを備える無線通信システムにおいて、移動端末は干渉抑圧合成の機能を有する。複数の無線基地局は、これらの無線基地局に接続された複数の移動端末の下りリンクのチャネル特性を共有する。無線基地局は、他の無線基地局を所望無線基地局としている移動端末に送信する干渉電波ビームを更に他の無線基地局から送信される干渉電波ビームに同相加算してその移動端末に到来する干渉電波ビームの数を制限するように、複数の送信アンテナで送信される電波にそれぞれ重み付けを与える。但し、その移動端末が干渉を抑圧可能な干渉電波ビームの数が、その移動端末に干渉電波ビームを送信する無線基地局の数以上である場合には、同相加算を行わない。
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