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Wireless Client roaming
Updated: January 11, 2014 09:50 PM (about 1 month ago)
QuestionClient is not moving to the nearest AP - it is sticking to a distant AP
KeywordsRoaming, hard to Roam between two APs
Roaming is purely a client decision. The client is responsible for deciding it needs to roam, and then detecting, evaluating, and roaming to an alternative AP. WLAN standards bodies (such as the IEEE) and industry bodies (such as the Wi-Fi Alliance) do not specify when a client should roam, or how the client determines to which alternative AP it should roam. Each vendor's roaming algorithms are proprietary and are not generally published.
There is no role played by Ruckus AP in this client roaming decision making however we do support fast roaming.
Some WNIC vendor do give some mechanism to control this behavior like:
In Intel, it is known as Wi-Fi roaming aggressiveness and this setting allows you to define how aggressively your Wi-Fi client roams to improve connection to an access point.
Click “Use default” value to balance between not roaming and performance.
• Lowest: Your wireless client will not roam. Only significant link quality degradation causes it to roam to another access point.
• Medium-Low/Medium-High: Allow Roaming.
• Medium: Balanced setting between not roaming and performance.
• Highest: Your Wi-Fi client continuously tracks the link quality. If any degradation occurs, it tries to find and roam to a better access point.
In Dell, it is known as roaming decision and roaming tendency, below are its options
• For Roaming Decision - The signal strength value that determines when the Dell Wireless WLAN Card starts scanning for other AP’s
? Default (default). ?75 dB
? Optimize Bandwidth. ?65 dB
? Optimize Distance. ?85 dB
• For Roam Tendency - This property adjusts the roaming thresholds for the Dell Wireless WLAN Card.
? Moderate (default). Roams to APs having a signal strength at least 20 dB greater than the current access point.
? Aggressive. Roams to APs having a signal strength at least 10 dB greater than the current access point.
? Conservative. Roams to APs having a signal strength at least 30 dB greater than the current access point.
I took a screen shot form the Windows XP could you pleas have a look.