| 摘要 |
The present invention provides a method and an apparatus for adapting a data rate that a mobile station indicates to a base station for transmission on a forward link in a cellular system. The method comprises measuring a first value indicative of strength of at least one of a primary and a secondary pilot. The method further comprises compensating the first value indicative of strength of the pilot based on an offset to select a second value indicative of the data rate for the base station. The base station may determine an offset value for compensation and send an indication to the mobile station during the setup of the mobile station. When the mobile station connects to the base station, a measurement of a channel condition (i.e., pilot) may determine a revised data rate for transmission of a next data packet on the forward link. The mobile station may transmit a data rate request on the reverse link using a data rate control channel. Upon the receipt of the request, the base station may use the revised data rate on the forward link for the traffic channel when transmitting packets to the mobile station in the next transmission. Accordingly, the mobile station may provide a data rate control that may adapt the selected data rate in the forward link to at least one varying radio channel condition. In a cellular system, an initial data rate selected by a mobile station may converge to a data rate corresponding to the power of a traffic channel on a forward link so that a base station may transmit data based on one or more instantaneous channel conditions.
|
