Frequency assignment for multi-cell IEEE 802.11 wireless networks
First Claim
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1. A method, executed in at least one processor, for assigning channels in a network that includes a plurality of access points, comprising the steps of:
- when an access point joins said network or has left said network, assigning a channel to each access points of said network;
for each access point i, including in set Ci(1) those of said access points of said network whose power, as received by access point i, is greater than a first preselected threshold, and including in Ci(2) those of pairs of said access points of said network whose combined power, as received by access point i, is greater than a second preselected threshold;
determining effective channel utilization, Ui, for each access point, i, of said network, where
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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.
15 Citations
4 Claims
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1. A method, executed in at least one processor, for assigning channels in a network that includes a plurality of access points, comprising the steps of:
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when an access point joins said network or has left said network, assigning a channel to each access points of said network; for each access point i, including in set Ci(1) those of said access points of said network whose power, as received by access point i, is greater than a first preselected threshold, and including in Ci(2) those of pairs of said access points of said network whose combined power, as received by access point i, is greater than a second preselected threshold; determining effective channel utilization, Ui, for each access point, i, of said network, where
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2. The method of claim 1 where the objective function is
minimize max{U1, U2 . . . UN}where N is the number of access points.
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3. The method of claim 1 where the objective function is
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4. The method of claim 1 where said at least one processor is within an access point that serves as a master access point for said network.
Specification
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Current AssigneeAT&T Corporation (AT&T, Inc.)
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Original AssigneeAT&T Corporation (AT&T, Inc.)
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InventorsKim, Byoung-Jo J., Leung, Kin K
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Primary Examiner(s)Negrón; Daniell L
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Assistant Examiner(s)Nguyen; Huy D
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Application NumberUS12/069,594Publication NumberTime in Patent Office1,029 DaysField of Search455/453, 455/446, 455/447, 455/450, 455/451US Class Current455/453CPC Class CodesH04W 16/04 Traffic adaptive resource p...H04W 24/00 Supervisory, monitoring or ...H04W 28/16 Central resource management...H04W 84/12 WLAN [Wireless Local Area N...
