Method and apparatus for reducing radio link supervision...

H - Electricity – 04 – W

Patent

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Details

H04W 76/06 (2009.01) H04W 24/00 (2009.01) H04W 72/04 (2009.01)

Patent

CA 2399729

A method of supervising on the forward link in a high data rate system is disclosed, wherein a base station transmits to an access terminal on a forward traffic channel only when the base station has data to send to the access terminal. The base station minimizes the worst-case period necessary to reclaim traffic channel resources following a release by periodically transmitting a configuration packet to its access terminals. The configuration packet indicates the allocation status of the traffic channels belonging to the base station. If an access terminal receives a configuration packet indicating the deallocation of one or all of its traffic channels, the access terminal immediately ceases its use of those traffic channels. If an access terminal fails to successfully decode a configuration packet for a predetermined supervision time, the access terminal releases its connection with all base stations and associated traffic channels.

L'invention concerne un procédé de surveillance d'une liaison aval dans un système à débit binaire élevé, dans lequel une station de base émet des données vers un terminal d'accès situé sur un canal de trafic aval, uniquement lorsque cette station de base doit envoyer des données à ce terminal d'accès. Cette station de base réduit au minimum la période la plus défavorable nécessaire pour obtenir des ressources de canal de trafic suite à une libération en envoyant périodiquement un paquet de configuration à ses terminaux d'accès. Ce paquet de configuration indique l'état d'attribution des canaux de trafic appartenant à la station de base. Si un terminal d'accès reçoit un paquet de configuration indiquant la libération d'un ou de tous les canaux de trafic, ce terminal d'accès cesse immédiatement d'utiliser ces canaux de trafic. Si un terminal d'accès ne parvient pas à décoder avec succès un paquet de configuration pendant un temps de surveillance prédéterminé, ce terminal d'accès se dégage de toutes les stations de base et des canaux de trafic associés.

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