Performing association during handover in wireless access...

H - Electricity – 04 – W

Patent

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Details

H04W 36/08 (2009.01) H04W 60/00 (2009.01)

Patent

CA 2575722

A method of associating a mobile station to a base station in a wireless communication system comprises transmitting to a serving base station a scanning request message comprising an association indicator. The method also comprises receiving from the serving base station a scanning response message comprising a rendezvous time associated with a neighboring base station for initiating ranging with the neighboring base station, wherein the serving base station communicates an association notification to the neighboring base station, the association notification comprising the rendezvous time. The method also comprises associating with the neighboring base station by transmitting a ranging request after passing of the rendezvous time determined from a transmission time of the scanning response message from the neighboring base station, wherein the rendezvous time is associated with a time the neighboring base station is expected to provide a non-contention based ranging opportunity for the mobile station.

La présente invention concerne un procédé pour associer une station mobile à une station de base dans un système de radiocommunications avec émission, à destination d'une station de base de desserte, d'un message de demande de balayage comprenant un indicateur d'association. Le procédé consiste également à recevoir de la station de base de desserte un message de réponse de balayage comprenant une heure de rendez-vous associée à une station de base de voisinage de façon à lancer un calcul d'éloignement avec la station de base de voisinage, auquel cas la station de base de desserte communique à la station de base de voisinage une notification d'association comprenant l'heure de rendez-vous. Le procédé consiste aussi à associer à la station de base de voisinage par émission d'une demande de calcul d'éloignement après remise de l'heure de rendez-vous calculé à partir d'une heure d'émission du message de réponse de balayage à partir de la station de base de voisinage, auquel cas l'heure de rendez-vous est associée à une heure à laquelle la station de base de voisinage est supposée fournir une possibilité de calcul d'éloignement à base de non contention au profit de la station mobile.

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