Frequency assignment for multi-cell IEEE 802.11 wireless networks
First Claim
1. A method executed in a network management system adapted to work with a network of access points APi, i=1, 2, . . . M, where each APi communicates at an assigned frequency with a plurality of terminals, and where the communication between an access point and a terminal employs a protocol that provides contention-based access using a carrier sense multiple access with collision avoidance (CDMA/CA) mechanism, and also provides contentions-free access when the contention-based access is successful, comprising the steps of:
- receiving from each APi information about (a) fraction of time that APi is busy, (b) for each possible frequency of operation, k, fraction of time that one or more access points other than APi would interfere with APi if APi were communicating at frequency k, and (c) for each possible frequency of operation, k, fraction of time that one or more pairs of access points, not including APi, would interfere with APi if APi were communicating at frequency k;
developing a measure of effective channel utilization for APi, Ui, operating at frequency l, in accord with the expression
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Abstract
A frequency planning method for use in an IEEE 802.11 wireless network is described. The frequency planning method obtains traffic load information associated with access points belonging to a multi-cell wireless network and assigns channels to the access points based on the traffic load information.
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Citations
5 Claims
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1. A method executed in a network management system adapted to work with a network of access points APi, i=1, 2, . . . M, where each APi communicates at an assigned frequency with a plurality of terminals, and where the communication between an access point and a terminal employs a protocol that provides contention-based access using a carrier sense multiple access with collision avoidance (CDMA/CA) mechanism, and also provides contentions-free access when the contention-based access is successful, comprising the steps of:
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receiving from each APi information about (a) fraction of time that APi is busy, (b) for each possible frequency of operation, k, fraction of time that one or more access points other than APi would interfere with APi if APi were communicating at frequency k, and (c) for each possible frequency of operation, k, fraction of time that one or more pairs of access points, not including APi, would interfere with APi if APi were communicating at frequency k; developing a measure of effective channel utilization for APi, Ui, operating at frequency l, in accord with the expression - View Dependent Claims (2, 3, 4, 5)
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Specification