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1. WO2011005533 - PRECODING CONTROL CHANNELS IN WIRELESS NETWORKS

Publication Number WO/2011/005533
Publication Date 13.01.2011
International Application No. PCT/US2010/039522
International Filing Date 22.06.2010
IPC
H04L 25/03 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
25Baseband systems
02Details
03Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
CPC
H04B 7/0413
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
H04B 7/0456
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
0456Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
H04L 2025/03414
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
25Baseband systems
02Details
03Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
03006Arrangements for removing intersymbol interference
0335characterised by the type of transmission
03375Passband transmission
03414Multicarrier
H04L 2025/03426
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
25Baseband systems
02Details
03Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
03006Arrangements for removing intersymbol interference
0335characterised by the type of transmission
03426transmission using multiple-input and multiple-output channels
H04L 25/03343
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
25Baseband systems
02Details
03Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
03006Arrangements for removing intersymbol interference
03343Arrangements at the transmitter end
H04L 5/0048
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
5Arrangements affording multiple use of the transmission path
003Arrangements for allocating sub-channels of the transmission path
0048Allocation of pilot signals, i.e. of signals known to the receiver
Applicants
  • QUALCOMM Incorporated [US]/[US] (AllExceptUS)
  • LUO, Tao [CA]/[US] (UsOnly)
  • DOAN, Dung N. [VN]/[US] (UsOnly)
  • YOO, Taesang [KR]/[US] (UsOnly)
  • ZHANG, Xiaoxia [CN]/[US] (UsOnly)
  • SEONG, Kibeom [KR]/[US] (UsOnly)
Inventors
  • LUO, Tao
  • DOAN, Dung N.
  • YOO, Taesang
  • ZHANG, Xiaoxia
  • SEONG, Kibeom
Agents
  • DO, Liem T.
Priority Data
12/816,70816.06.2010US
61/219,30822.06.2009US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PRECODING CONTROL CHANNELS IN WIRELESS NETWORKS
(FR) CANAUX DE COMMANDE DE PRÉCODAGE DANS DES RÉSEAUX SANS FIL
Abstract
(EN)
Systems and methodologies are described that facilitate precoding signals transmitted over downlink control channels to provide transmit diversity. A dedicated reference signal (DRS) related to a wireless device can additionally be precoded such that the wireless device can determine a precoder or related parameters based at least in part on performing a channel estimate for the precoded DRS signal. The wireless device can utilize the determined precoder or related parameters to decode precoded signals received over downlink control channel resources. Additionally or alternatively, an access point can signal a sequence of precoders to the wireless device. The access point can cycle through the sequence of precoders to precode signals for transmission over downlink control channel resources, and the wireless device can decode the signals based at least in part on similarly cycling through the precoders for received signals.
(FR)
L'invention porte sur des systèmes et des méthodologies facilitant le précodage de signaux transmis sur des canaux de commande de liaison descendante afin de fournir une diversité de transmission. On peut de plus précoder un signal de référence dédié (DRF) lié à un dispositif sans fil de telle sorte que le dispositif sans fil puisse déterminer un précodeur ou des paramètres liés sur la base au moins en partie de la réalisation d'une estimation de canal pour le signal DRS précodé. Le dispositif sans fil peut utiliser le précodeur déterminé ou des paramètres liés pour décoder des signaux précodés reçus sur des ressources de canal de commande de liaison descendante. De plus ou en variante, un point d'accès peut signaler une séquence de précodeurs au dispositif sans fil. Le point d'accès peut parcourir la séquence de précodeurs afin de précoder les signaux pour une transmission sur des ressources de canal de commande en liaison descendante, et le dispositif sans fil peut décoder les signaux sur la base au moins en partie d'un cyclage similaire par les précodeurs pour les signaux reçus.
Latest bibliographic data on file with the International Bureau