Re: Getting the Received Signal Strength using the Native Wifi (Vista)
- From: Hector <hector@xxxxxxxxxxxxxxxxxxxxxxxx>
- Date: Thu, 28 Sep 2006 17:08:55 -0700
Pavel A. wrote:
"Hector" wrote:Hi,
Hello,
I'm having trouble getting the signal strength from a wireless network in a way that matches the built-in vista (build 5728) signal strenght indicator.
The way I do it, is by calling WlanGetAvailableNetworkList and then retrieving the wlanSignalQuality member from the available network structures returned.
While I get a value of 100 (max value, as per the API) Vista reports the connection to be "Fair" (or 2 bars).
Which method does vista use to get the measure of signal strenght? or what am I doing wrong?
You are mixing signal strength (RSSI) and quality. These are two diferent things. WlanGetAvailableNetworkList prefers the quality because it makes more sense to the user.
RSSI is in WLAN_BSS_ENTRY structures; call WlanGetNetworkBssList to get them.
Regards,
--PA
Thanks for your answer. I thought that it could be a semantics issue, although, wouldn't then "linkQuality" be a better name than "signalQuality" for the member of the available networks structure?
I also used RSSI from WLAN_BSS_ENTRY to try to measure signal strength, but isn't the RSSI number quantified differently for different wlan chipsets? Then, how does Vista convert from the RSSI value to a signal strength rating?
Thanks again,
Hector U.
.
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