WO2023184253 - SYSTEMS AND METHODS FOR CHANNEL STATE INFORMATION ACQUISITION USING JOINT SPACE-FREQUENCY SUBSPACE
National phase entry:
Publication Number
WO/2023/184253
Publication Date
05.10.2023
International Application No.
PCT/CN2022/084142
International Filing Date
30.03.2022
Title **
[English]
SYSTEMS AND METHODS FOR CHANNEL STATE INFORMATION ACQUISITION USING JOINT SPACE-FREQUENCY SUBSPACE
[French]
SYSTÈMES ET PROCÉDÉS D'ACQUISITION D'INFORMATIONS D'ÉTAT DE CANAL À L'AIDE D'UN SOUS-ESPACE ESPACE-FRÉQUENCE COMMUN
Applicants **
HUAWEI TECHNOLOGIES CO.,LTD.
Huawei Administration Building, Bantian, Longgang District
Shenzhen, Guangdong 518129, CN
Inventors
FARMANBAR, Hamidreza
Huawei Administration Building, Bantian, Longgang District
Shenzhen, Guangdong 518129, CN
BALIGH, Mohammadhadi
Huawei Administration Building, Bantian, Longgang District
Shenzhen, Guangdong 518129, CN
Application details
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International Searching Authority |
CNIPA
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| Applicant's Legal Status |
Legal Entity
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| Entry into National Phase under |
Chapter I
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing | 1450 | |
| EPO | Filing, Examination | 10814 | |
| Japan | Filing | 594 | |
| South Korea | Filing | 482 | |
| USA | Filing, Examination | 7310 |
Total: 20650 USD
The term for entry into the National Phase has expired. This quotation is for informational purposes only
Abstract[English]
Aspects of the present disclosure are directed to channel state information (CSI) acquisition and feedback where the UE estimates the channel based on a received reference signal (such as a channel state information reference signal (CSI-RS) ) and calculates an appropriate precoder matrix according to the measured channel. The UE can then send a compressed version of the precoder matrix based on a set of joint space-frequency subspace vectors to the base station that can be used by the base station in order to recover the precoder matrix from the compressed version of the precoder matrix. By compressing the precoder matrix information feedback overhead may be reduced.[French]
Des aspects de la présente divulgation concernent l'acquisition et la rétroaction d'informations d'état de canal (CSI), l'UE estimant le canal sur la base d'un signal de référence reçu (tel qu'un signal de référence d'informations d'état de canal (CSI-RS)) et calculant une matrice de précodeur appropriée selon le canal mesuré. L'UE peut ensuite envoyer une version compressée de la matrice de précodeur sur la base d'un ensemble de vecteurs de sous-espace espace-fréquence commun à la station de base qui peut être utilisé par la station de base afin de récupérer la matrice de précodeur à partir de la version compressée de la matrice de précodeur. La compression du surdébit de rétroaction d'informations de matrice de précodeur peut être réduite.