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1. WO2013023542 - CHANNEL STATE INFORMATION FEEDBACK METHOD AND DEVICE

Publication Number WO/2013/023542
Publication Date 21.02.2013
International Application No. PCT/CN2012/079846
International Filing Date 08.08.2012
IPC
H04W 88/02 2009.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
88Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
02Terminal devices
CPC
H04L 1/0025
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
0023characterised by the signalling
0025Transmission of mode-switching indication
H04L 1/0026
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
0023characterised by the signalling
0026Transmission of channel quality indication
H04L 5/0026
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
5Arrangements affording multiple use of the transmission path
0001Arrangements for dividing the transmission path
0026Division using four or more dimensions
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
H04L 5/0057
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
0053Allocation of signaling, i.e. of overhead other than pilot signals
0057Physical resource allocation for CQI
H04L 5/0094
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
5Arrangements affording multiple use of the transmission path
0091Signaling for the administration of the divided path
0094Indication of how sub-channels of the path are allocated
Applicants
  • 电信科学技术研究院 CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY [CN]/[CN] (AllExceptUS)
  • 苏昕 SU, Xin [CN]/[CN] (UsOnly)
  • 塔玛拉卡⋅拉盖施 TAMRAKAR, Rakesh [NP]/[CN] (UsOnly)
  • 沈祖康 SHEN, Zukang [CN]/[CN] (UsOnly)
Inventors
  • 苏昕 SU, Xin
  • 塔玛拉卡⋅拉盖施 TAMRAKAR, Rakesh
  • 沈祖康 SHEN, Zukang
Agents
  • 北京鑫媛睿博知识产权代理有限公司 BEIJING XINYUAN RAINBOW INTELLECTUAL PROPERTY LAW FIRM
Priority Data
201110231327.612.08.2011CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) CHANNEL STATE INFORMATION FEEDBACK METHOD AND DEVICE
(FR) PROCÉDÉ ET DISPOSITIF DE RETOUR D'INFORMATIONS D'ÉTAT DE CANAL
(ZH) 信道状态信息的反馈方法和设备
Abstract
(EN)
Provided are a channel state information feedback method and device. By applying the technical solution of the embodiments of the present invention, when calculating channel state information based on CSI-RS, a terminal device assumes that a PDSCH applies a codebook-based pre-coding transmission method, maps the data transmitted thereby to a CSI-RS port, and determines the channel state information on this basis. Thus, when determining channel state information, and base station scheduling, and performing link self-adaptation, the terminal device can perform same according to an identical assumption, avoiding the occurrence of errors when performing scheduling and link self-adaptation.
(FR)
La présente invention concerne un procédé et un dispositif de retour d'informations d'état de canal. Grâce à l'application de la solution technique des modes de réalisation de la présente invention, lors du calcul d'informations d'état de canal basées sur CSI-RS, un dispositif terminal part de l'hypothèse qu'un PDSCH applique un procédé de transmission de pré-codage basé sur un livre de code, mappe les données ainsi transmises par rapport à un port CSI-RS, et détermine les informations d'état de canal sur cette base. Ainsi, lorsqu'on détermine les informations d'état de canal, et que la station de base programme et réalise une auto-adaptation de liaison, le dispositif terminal peut réaliser la même chose selon une hypothèse identique, évitant que l'erreur ne se produise lorsqu'on réalise la programmation et l'auto-adaptation de liaison.
(ZH)
本发明实施例公开了一种信道状态信息的反馈方法和设备,通过应用本发明实施例的技术方案,终端设备在基于CSI-RS进行信道状态信息的计算时,假设PDSCH采用了基于码本的预编码传输方式,将其传输的数据映射到CSI-RS端口上,并在此基础上进行信道状态信息的确定,从而,使终端设备在确定信道状态信息以及基站调度并进行链路自适应时,可以依据相同的假设进行,避免了调度与链路自适应时的误差。
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