WO2023051742 - NULL DATA PACKET ANNOUNCEMENT (NDPA) FRAME INDICATION
National phase entry:
Publication Number
WO/2023/051742
Publication Date
06.04.2023
International Application No.
PCT/CN2022/122903
International Filing Date
29.09.2022
Title **
[English]
NULL DATA PACKET ANNOUNCEMENT (NDPA) FRAME INDICATION
[French]
INDICATION DE TRAME D'ANNONCE DE PAQUET DE DONNÉES VIDE (NDPA)
Applicants **
HUAWEI TECHNOLOGIES CO., LTD.
Inventors
MONTEMURRO, Michael
SUH, Jung Hoon
ABOUL-MAGD, Osama
MCCANN, Stephen
XIN, Yan
AU, Kwok Shum
Priority Data
17/490,414
30.09.2021
US
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 1929 | |
| EPO | Filing, Examination, Granting | 13606 | |
| Japan | Filing, Examination, Granting | 2413 | |
| South Korea | Filing, Examination, Granting | 2612 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
25,300
The term for entry into the National Phase has expired. This quotation is for informational purposes only
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Abstract[English]
The present disclosure provides methods and apparatus related to NDPA frame indication. An aspect of the disclosure provides a method. The method includes sending, to one or more stations (STAs), a request for channel state information (CSI). The request includes a null data packet announcement (NDPA) frame including a first field and a second field. The first field indicates presence of the second field, and the second field indicates a variant of the NDPA frame. The method further includes receiving, from the one or more STAs, a CSI feedback response based on the request. In some embodiments, the first field is one of a sounding dialog token field and indicates the presence of the second field via at least two bits. In some embodiments, the first field is a frame control field and indicates the second field via a 4-bit subtype subfield.[French]
La présente divulgation concerne des procédés et un appareil associés à une indication de trame de NDPA. Un aspect de la divulgation concerne un procédé. Le procédé consiste à envoyer, à une ou à plusieurs stations (STA), une demande d'informations d'état de canal (CSI). La demande comprend une trame d'annonce de paquet de données vide (NDPA) comprenant un premier champ et un second champ. Le premier champ indique la présence du second champ, et le second champ indique une variante de la trame de NDPA. Le procédé consiste en outre à recevoir, à partir de la ou des STA, une réponse de rétroaction de CSI sur la base de la demande. Selon certains modes de réalisation, le premier champ est l'un d'un champ de jeton de dialogue de sondage et indique la présence du second champ par l'intermédiaire d'au moins deux bits. Selon certains autres modes de réalisation, le premier champ est un champ de commande de trame et indique le second champ par l'intermédiaire d'un sous-champ de sous-type de 4 bits.