Method and system for integrated link adaptation and power control to improve error and throughput performance in wireless packet networks
First Claim
1. A method for improving error performance and throughput performance between a base station and a collection of wireless terminals communicating with said base station, comprising:
- dividing said collection of wireless terminals into a plurality of groups, at least one of the groups including two or more wireless terminals;
accumulating information about communication effectiveness for each of said groups; and
configuring, for the respective wireless terminals of each of the groups, a modulation level for communication between said base station and said wireless terminals, based on said information.
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Abstract
The invention provides a system that implements an algorithm for integrated link adaptation and power control to achieve specified error rates and to improve an overall throughput for real-time applications in wireless packet networks. The system initially divides wireless terminals into groups according to their signal path gains. Afterwards, the system can periodically adapt transmissions (i.e., link adaptations) based on the required error rates, actual error statistics and average transmission power for each wireless terminal group. Furthermore, transmission power can be adjusted by an enhanced Kalman-filter method to ensure successful reception.
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Citations
16 Claims
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1. A method for improving error performance and throughput performance between a base station and a collection of wireless terminals communicating with said base station, comprising:
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dividing said collection of wireless terminals into a plurality of groups, at least one of the groups including two or more wireless terminals; accumulating information about communication effectiveness for each of said groups; and configuring, for the respective wireless terminals of each of the groups, a modulation level for communication between said base station and said wireless terminals, based on said information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus for improving error performance and throughput performance of a cellular network, comprising:
a controller in a base station of a cell in said cellular network that divides a plurality of wireless terminals that communicate with said base station into a plurality of groups, based on signal path gains, at least one of the groups including two or more wireless terminals, accumulates information about communication effectiveness for each of said groups; and
that adapts a modulation level for each of the groups according to said information.- View Dependent Claims (11, 12, 13, 14, 15, 16)
Specification