Research Article
Energy-Efficient User Association with Congestion Avoidance and Migration Constraint in Green WLANs
| Input: , , , , , , | | | Output: , | | Initialize // Set of APs that are | | turned on | | Initialize // AP utilization | | Initialize // Number of associated | | DNs for each AP | | // Set of fixed AP-DN | | associations | | | // Limitation of DN removal | | while true do | | | // Find the AP with the maximum | | utilization | | if then | | if then | | return null, null // Failure of AP | | congestion avoidance | | else | | | Select a proper DN from | | Remove from | | | Update , | | | else | | if then return , | | | else break | | | while true do | | | | foreach do | | Remove from | | | if then return , | | | // Turn off as many | | APs as possible |
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