Method and apparatus for controlling data rate in a wireless...

H - Electricity – 04 – L

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Details

H04L 1/00 (2006.01) H04B 7/00 (2006.01) H04J 13/00 (2006.01) H04L 1/20 (2006.01) H04L 29/08 (2006.01) H04Q 7/00 (2006.01) H04Q 7/38 (2006.01)

Patent

CA 2464118

In one disclosed embodiment, communication between a mobile unit and a base station is performed at a data transfer rate selected from, for example, a finite set of HDR data transfer rates. Meanwhile, the mobile unit continually computes a moving average of the data transfer rates. The mobile unit also ascertains a supportable data rate for receiving data. The supportable data rate can be selected from a finite set of HDR data transfer rates. In order to maintain the moving average of the data transfer rate within a specified range, the mobile unit transmits maximum data rate requests or null data requests to the base station. The maximum data rates requested by the mobile unit are equal to or lower than the supportable data rate.

Dans un mode de réalisation, la communication entre une unité mobile et une station de base s'effectue à un débit de transfert de données sélectionnées dans, par exemple, un ensemble fini de débit HDR. Pendant ce temps, cette unité mobile calcule en continu une moyenne mouvante de ces débits binaires. Cette unité mobile assure également un débit binaire supportable pour la réception de données. Ce débit binaire supportable peut être sélectionné dans un ensemble fini de débit HDR. Dans le but de conserver la moyenne mouvante de ce débit binaire dans des limites déterminées, l'unité mobile transmet des demandes de débit binaire maximum ou des demandes de présence de données à la station de base. Les débits binaires maximum demandés par l'unité mobile sont égaux ou inférieurs au débit binaire supportable.

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