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US 2003/0083088 A1Published application
Wireless network having joint power and data rate adaptation
AssigneeAT&T Corp.
InventorsLi Fung Chang, Kapil K. Chawla, Justin Che-I Chuang, Xiaoxin Qiu
Life of this patent
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Abstract
A wireless network includes transmission power and data rate adaptation based upon signal quality experienced by the user.
Claims20
A method for jointly adapting power and data transmission rate in a wireless network, comprising:
- setting a transmission rate for a mobile station;
- measuring a signal quality for the mobile station;
- adjusting, if necessary, a transmission power level towards a power control target associated with the transmission rate;
- and
- adjusting, if necessary, the transmission rate for the mobile station based upon signal quality measured over a period of time.
2 more elements
A method for adapting transmission power and transmission rate in a wireless network, comprising:
- measuring a link quality of a first link in the wireless network;
- decreasing a current transmission power for the first link if the measured link quality is greater than a target link quality associated with a current transmission rate;
- increasing the current transmission power for the first link if the measured link quality is less than the target link quality associated with the current transmission rate;
- maintaining the current transmission power for the first link if the measured link quality is not less than or greater than the link quality associated with the current transmission rate;
- determining an average link quality measure at predetermined intervals;
- incrementing or decrementing a counter value based upon a comparison of the average link quality measure and a predetermined threshold;
- and
- increasing or decreasing the current transmission rate for a next one of the predetermined intervals.
5 more elements
Dependencies are inferred from the claim text.