Implementing a smart antenna in a wireless local area network

H - Electricity – 04 – B

Patent

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H04B 1/38 (2006.01)

Patent

CA 2580013

A method for implementing a smart antenna in establishing association between a station (STA) and an access point (AP) in a wireless local area network begins by transmitting a beacon frame by the AP on one antenna beam. The beacon frame is received at the STA, which measures the signal quality of the beacon frame. The AP switches to a different antenna beam and repeats the method until the beacon frame has been transmitted on all antenna beams. The STA associates to the AP that transmits the beacon frame with the highest signal quality on one of its antenna beams. A similar method may be used in which the STA sends a probe request frame to the AP, which then responds with probe response frames sent on multiple antenna beams.

L'invention concerne un procédé de mise en oeuvre d'une antenne intelligente pour établir une association entre une station (STA) et un point d'accès (PA) dans un réseau local sans fil, consistant à transmettre une trame de balisage par le PA sur un faisceau d'antenne. La trame de balisage est reçue au niveau de la STA qui mesure la qualité du signal de la trame de balisage. Le PA effectue une commutation sur un autre faisceau d'antenne et répète tout le processus jusqu'à ce que la trame de balisage soit transmise sur tous les faisceaux d'antenne. La STA est associée au PA transmettant la trame de balisage avec la plus haute qualité de signal sur un de ses faisceaux d'antenne. Un procédé semblable peut être utilisé, dans lequel la STA envoie une trame de demande d'essai au PA, qui répond alors par des trames de réponse d'essai envoyées sur de multiples faisceaux d'antenne.

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