Method and apparatus for controlling data rate on a forward channel in a wireless communication system
First Claim
1. A method in a wireless communication system for communicating data from a base station to a mobile unit at a data transfer rate, said method comprising steps of:
- computing a moving average of said data transfer rate;
ascertaining a supportable data rate for receiving data by said mobile unit;
transmitting to said base station a maximum data rate request so as to maintain said moving average of said data transfer rate substantially unchanged, said maximum data rate being equal to or lower than said supportable data rate.
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Accused Products
Abstract
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.
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Citations
30 Claims
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1. A method in a wireless communication system for communicating data from a base station to a mobile unit at a data transfer rate, said method comprising steps of:
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computing a moving average of said data transfer rate;
ascertaining a supportable data rate for receiving data by said mobile unit;
transmitting to said base station a maximum data rate request so as to maintain said moving average of said data transfer rate substantially unchanged, said maximum data rate being equal to or lower than said supportable data rate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A mobile unit configured to communicate with a base station in a wireless communication system at a data transfer rate, said mobile unit comprising:
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a CPU coupled to a buffer and an air interface module;
said CPU being configured to compute a moving average of said data transfer rate;
said CPU being further configured to ascertain a supportable data rate for receiving data by said buffer;
said air interface module being configured to transmit to said base station a maximum data rate request for receiving said data by said buffer so as to maintain said moving average of said data transfer rate substantially unchanged, said maximum data rate being equal to or lower than said supportable data rate. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification