Re: OID_802_11_BSSID_LIST_SCAN ndis 51
- From: "David R. Cattley" <dcattley@xxxxxxx>
- Date: Thu, 12 Feb 2009 12:42:37 -0500
if you have not already read all of the information at
http://www.microsoft.com/whdc/connect/wireless/default.mspx
and the related links in the DDK/WDK documentation on Windows XP Wireless Networking, I suggest strongly that you do so.
Legacy (monolithic) 802.11 drivers are permitted to (and encouraged to) moderate active scanning to minimize bandwidth waste and interference with data traffic. Often if a request to scan is received within a certain amount of time (5 seconds, but often configurable) the request is ignored or scanning is delayed until a timeout.
At one time MSFT had published a white paper on 802.11 adapter behavior for Windows XP that covered these topics. I think most of that information has been included into the DDK/WDK documentation. Sorry, I don't see the white paper on the WHDC site and I cannot find a copy of it on my systems to give you the title to search for. If I find the document, I will post the title (and a link if I can find one).
Good Luck,
Dave Cattley
Consulting Engineer
Systems Software Development
"subhash" <subhashsukumaran@xxxxxxxxx> wrote in message news:98698914-b019-438d-b552-0a5dbfd81cb3@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Hi,
I have a ndis 51 wifi station driver in windows XP.
I would like to know whether OID_802_11_BSSID_LIST_SCAN is part of
explicit scan. Do we really need to scan when we get this set request.
or just copy the available BSSID list(which we got from background
scanning.(implicit scan)). What is freequency of this OID. Is it
coming from wireless Zero Config(WZC) service. What should be the
ideal freequency of background scan. Is it necessary that implicit
scan should be more free freequent than explicit scan.
Plz help.. :(
With Best Regards,
Subhash
.
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