Method and apparatus for determining a reverse link...

H - Electricity – 04 – W

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H04W 24/08 (2009.01) H04W 52/08 (2009.01) H04L 1/00 (2006.01)

Patent

CA 2377060

Reverse link busy bits are independently generated by each base station (102, 104 and 106) and indicative of whether the transmitting base station (102, 104 and 106) has reached a reserve link capacity limit. In a first exemplary embodiment, the remote station (122) combines the multipath components of the reverse link busy bits from each of the transmitting base stations (102, 104 and 106) in its Active Set and in response transmits a reverse link signal only when all of the reverse link busy bits indicate that the base stations (102, 104 and 106) in the remote stations Active Set have reverse link capacity. In a first alternative embodiment, the remote station weights, the reverse link busy signals in accordance with the signal strength of the base station (102, 104 or 106) transmitting the busy signal and determines whether to transmit based on the weighted sum of the busy signals.

Selon l'invention, des bits d'activité de liaison inverse sont indépendamment générés par chaque station de base (102, 104 et 106) pour indiquer si la station de base émettrice (102, 104 et 106) a atteint une limite de capacité de liaison inverse. Dans une première forme de réalisation exemplaire, un terminal distant (122) combine les éléments multivoie des bits d'activité de liaison inverse de chaque station de base émettrice (102, 104 et 106) dans son système actif et, en réponse, transmet un signal de liaison inverse uniquement lorsque tous les bits d'activité de liaison inverse indiquent que les stations de base (102, 104 et 106) du système actif de terminaux distants ont une capacité de liaison inverse. Dans une autre forme de réalisation, le terminal distant pondère les signaux d'activité de liaison inverse en fonction de l'intensité du signal de la station de base (102, 104 ou 106) transmettant le signal d'activité, puis détermine s'il faut transmettre sur la base de la somme pondérée des signaux d'activité.

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