Directional antenna physical layer steering for wlan

H - Electricity – 01 – Q

Patent

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Details

H01Q 3/00 (2006.01) H01Q 21/00 (2006.01) H04B 7/005 (2006.01) H04B 7/10 (2006.01) H04Q 1/00 (2006.01)

Patent

CA 2500578

A technique for steering a directional antenna such as may be used in a Wireless Local Area Network (WLAN) device. The technique detects signal parameters during reception of short sync pulses in the very beginning portion of a Packet Protocol Data Unit (PPDU) frame. As a result, the antenna can be steered to an optimum direction for reception prior to receiving other portions of a preamble that may be needed to acquire carrier signal phase and frequency.

L'invention concerne une technique de braquage d'une antenne directionnelle que l'on peut utiliser avec un périphérique de réseau local sans fil. La technique détecte les paramètres de signaux pendant la réception d'impulsions de synchronisation courtes au tout début d'une trame d'une unité de données de protocole (PPDU). Ainsi, l'antenne peut être braquée dans une direction optimale en vue de la réception avant de recevoir d'autres parties d'un préambule qui peuvent être nécessaires pour acquérir une phase et une fréquence d'un signal porteur.

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