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1. EP2534778 - REFERENCE SIGNAL FOR A COORDINATED MULTI-POINT NETWORK IMPLEMENTATION

Office
European Patent Office
Application Number 11742952
Application Date 14.02.2011
Publication Number 2534778
Publication Date 19.12.2012
Publication Kind B1
IPC
H04J 11/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
11Orthogonal multiplex systems
H04B 7/02
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
H04B 7/024
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
022Site diversity; Macro-diversity
024Co-operative use of antennas at several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output systems
H04B 7/06
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
06at the transmitting station
H04W 4/06
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
4Services specially adapted for wireless communication networks; Facilities therefor
06Selective distribution of broadcast services, e.g. multimedia broadcast multicast service ; Services to user groups; One-way selective calling services
H04W 28/04
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
28Network traffic or resource management
02Traffic management, e.g. flow control or congestion control
04Error control
CPC
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
H04J 11/0053
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
11Orthogonal multiplex systems, ; e.g. using WALSH codes
0023Interference mitigation or co-ordination
005of intercell interference
0053using co-ordinated multipoint transmission/reception
H04W 4/06
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
4Services specially adapted for wireless communication networks; Facilities therefor
06Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
H04W 48/08
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
48Access restriction
08Access restriction or access information delivery, e.g. discovery data delivery
H04W 28/04
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
28Network traffic or resource management
02Traffic management, e.g. flow control or congestion control
04Error control
Applicants BLACKBERRY LTD
Inventors FONG MO-HAN
YU DONGSHENG
XU HUA
NOVAK ROBERT
GUO SHIGUANG
CAI ZHIJUN
HEO YOUN HYOUNG
Designated States
Priority Data 30436410 12.02.2010 US
Title
(DE) REFERENZSIGNAL ZUR IMPLEMENTIERUNG EINES KOORDINIERTEN MEHRPUNKTNETZWERKS
(EN) REFERENCE SIGNAL FOR A COORDINATED MULTI-POINT NETWORK IMPLEMENTATION
(FR) SIGNAL DE RÉFÉRENCE POUR LA MISE EN UVRE COORDONNÉE D'UN RÉSEAU MULTIPOINT
Abstract
(EN) A system and method for broadcasting a channel state information reference signal (CSI-RS) is disclosed. A CSI-RS that is orthogonal to CSI-RSs transmitted by each of a first network cell and each of a set of neighbor cells that interfere with the first network cell is identified. In one implementation, the first network cell has a coverage containing a coverage of a second network cell. The method includes transmitting, from the second network cell, the CSI-RS that is orthogonal to CSI-RSs transmitted by each of the first network cell and each of a set of interfering neighbor cells.
(FR) La présente invention se rapporte à un système et à un procédé pour la diffusion d'un signal de référence contenant des informations d'état d'un canal (CSI-RS). Un signal CSI-RS qui est orthogonal par rapport à des signaux CSI-RS transmis par chacune d'une première cellule de réseau et chacune d'un ensemble de cellules voisines qui interfèrent avec la première cellule de réseau est identifié. Dans un mode de réalisation de l'invention, la première cellule de réseau a une couverture contenant une couverture d'une seconde cellule de réseau. Le procédé selon l'invention consiste à transmettre, à partir de la seconde cellule de réseau, le signal CSI-RS qui est orthogonal par rapport à des signaux CSI-RS transmis par chacune de la première cellule de réseau et chacune d'un ensemble de cellules voisines interférentes.