Closed-loop automatic channel selection
First Claim
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1. A method for reducing interference in a network, the method comprising:
- measuring maximum user throughput of a current transmission channel in the network being used by a user for data communication;
transmitting test data to other available transmission channels in the network other than the current transmission channel;
measuring throughput of said other available transmission channels responsive to said transmitting test data;
determining transmission channel quality metrics for the current transmission channel and said other available transmission channels responsive to the measured throughputs;
determining whether an available transmission channel has better channel quality metrics than the channel quality metrics of the current transmission channel;
selecting the available transmission channel when the available transmission channel has a better channel quality metrics than the channel quality metrics of the current transmission channel; and
maintaining the current transmission channel for data communication, when the available transmission channel does not have better channel quality metrics than the channel quality metrics of the current transmission channel, wherein measuring maximum user throughput of the current transmission channel is performed during normal network traffic pattern, and measuring throughput of said other available transmission channels is performed during an idle period of the network.
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Abstract
A system and method for improving radio performance through automatic channel selection utilizing a closed-channel model is disclosed. A measurement engine records maximum user throughput on a per station basis during normal traffic operation. The measurement engine further records throughput metrics based on test traffic sent to all associated stations during idle operation. A policy logic engine utilizes the measurements to determine an optimal transmission channel for transmission and receipt of data.
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Citations
20 Claims
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1. A method for reducing interference in a network, the method comprising:
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measuring maximum user throughput of a current transmission channel in the network being used by a user for data communication; transmitting test data to other available transmission channels in the network other than the current transmission channel; measuring throughput of said other available transmission channels responsive to said transmitting test data; determining transmission channel quality metrics for the current transmission channel and said other available transmission channels responsive to the measured throughputs; determining whether an available transmission channel has better channel quality metrics than the channel quality metrics of the current transmission channel; selecting the available transmission channel when the available transmission channel has a better channel quality metrics than the channel quality metrics of the current transmission channel; and maintaining the current transmission channel for data communication, when the available transmission channel does not have better channel quality metrics than the channel quality metrics of the current transmission channel, wherein measuring maximum user throughput of the current transmission channel is performed during normal network traffic pattern, and measuring throughput of said other available transmission channels is performed during an idle period of the network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for reducing interference in a network, the method comprising:
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measuring maximum user throughput of a current transmission channel in the network being used by a user for data communication; transmitting test data to other available transmission channels in the network other than the current transmission channel; measuring throughput of said other available transmission channels responsive to said transmitting test data; determining transmission channel quality metrics for the current transmission channel and said other available transmission channels responsive to the measured throughputs; determining whether an available transmission channel has better channel quality metrics than the channel quality metrics of the current transmission channel; selecting the available transmission channel when the available transmission channel has a better channel quality metrics than the channel quality metrics of the current transmission channel; and maintaining the current transmission channel for data communication, when the available transmission channel does not have better channel quality metrics than the channel quality metrics of the current transmission channel, wherein measuring maximum user throughput of the current transmission channel and measuring throughput of said other available transmission channels are performed only when link utilization in the network is below a predetermined threshold.
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19. A method for reducing interference in a network, the method comprising:
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measuring maximum user throughput of a current transmission channel in the network being used by a user for data communication; transmitting test data to other available transmission channels in the network other than the current transmission channel; measuring throughput of said other available transmission channels responsive to said transmitting test data; determining transmission channel quality metrics for the current transmission channel and said other available transmission channels responsive to the measured throughputs; determining whether an available transmission channel has better channel quality metrics than the channel quality metrics of the current transmission channel; selecting the available transmission channel when the available transmission channel has a better channel quality metrics than the channel quality metrics of the current transmission channel; and maintaining the current transmission channel for data communication, when the available transmission channel does not have better channel quality metrics than the channel quality metrics of the current transmission channel, wherein measuring maximum user throughput of the current transmission channel and measuring throughput of said other available transmission channels are performed when there is no data traffic of a particular data classification or importance. - View Dependent Claims (20)
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Specification