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Topic: What are the typical roaming problems?

Scenario: Doctors uses iPad mini`s to view patient records and they are experiencing roaming issues.

Answer:  

1.       Roaming aggressiveness of the wireless client is too high.

-          Wireless client roams between multiple AP`s, even though signal strength is stable.

 

2.       Roaming aggressiveness of the wireless client is too low. 

-          Wireless client is “sticky” to a particular AP, even though stronger AP is available.

Solution:

1.       Control the transmit power of each device.

-          Properly set the transmit power in reference to its location, physical obstructions or type of environment and wireless interference from neighbouring AP`s.

-          We recommend to set the transmit power initially to 14dBm on the 2.4GHz and 20dBm on the 5GHz then have an incremental of 3dBm if necessary. It is suggested to use an RSSI Tool to help identify the transmit power the AP needs.

 

2.       Set a relative Fast Handover/ RSSI Threshold value.

-          Some wireless client devices retains connection to a weak signal even if there`s a stronger one available.

-          Set the RSSI Threshold/ Fast Handover value to -80dBm. It will force the client device to disconnect from the AP thus allowing it to scan and connect to a stronger signal.

Applicable devices:

EWS360AP, EWS350AP, EWS320AP, EWS310AP, EWS510AP, ECB1750, ECB1200, EAP1750H, and EAP1200H.

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