How to get exact RSSI values in dBm?

May 5, 2008 at 3:26 PM
Edited May 5, 2008 at 3:29 PM
Hi!

I have tried to retrieve the exact RSSI values for each detected AP with two approaches:

1. retrieving Wlan.WlanAvailableNetwork.wlanSignalQuality or Wlan.WlanBssEntry.linkQuality and converting the percentage values into dBm based on http://msdn.microsoft.com/en-us/library/ms707403(VS.85).aspx. The results look OK but the problem is that they never go over -50. The values are also important to us if the signals are stronger than -50dBm...

2. retrieving Wlan.WlanBssEntry.rssi. According to the documentation (http://msdn.microsoft.com/en-us/library/ms706839(VS.85).aspx) it looks very nice, exactly what we needed. But the values are too low to be realistic. For instance, the RSSI value of an AP placed a few meters away from my laptop is -139... My question is how I should interpret these values? I couldn't see any correlation...

Could anyone help me? Thanks a lot in advance!
May 8, 2008 at 8:14 AM
After consulting Microsoft, problem is now solved by using approach 2 and after updating the driver of the wireless adapter (under Vista). Mine is an Intel Pro Wireless 3945ABG.
Jul 21, 2008 at 9:51 AM


luren wrote:
After consulting Microsoft, problem is now solved by using approach 2 and after updating the driver of the wireless adapter (under Vista). Mine is an Intel Pro Wireless 3945ABG.


hi luren,

can you give me a sample code to use Wlan.WlanBssEntry.rssi?

thanks a lot before