An AP (or station in an IBSS) is supposed to include the channel on which the Beacon is transmitted in the DS parameter set, according to the standard. The whole purpose for the information element is to remove the ambiguity about which channel the transmitter is using, exactly because the Beacon can be received on more than one channel surrounding the channel on which it is sent. So in your example, the Beacon sent on channel 6 must indicate channel 6 in the DS Parameter Set information element.
-Bob -----Original Message----- From: Puneet B [mailto:[EMAIL PROTECTED] Sent: Tuesday, October 14, 2003 5:08 PM To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; Bob O'Hara Subject: Re: [BAWUG] beacon frames and channels > Beacons contain the channel ID in the beacon frame. right: in the DS Parameter Set. Thanks for pointing that out. > STAs 'know' what channel they are 'on', and can discard > beacons from adjacent channels. So the STA picks the frequency based on the channel number it sees in the beacon and not the frequency at which the beacon was received? And the beacon is not required to maintain the mapping of channel-number to frequency when it is sent out? I mean a beacon sent at 2.437Ghz can have a channel number of 11 inside it (instead of 6)? Thanks, Puneet _______________________________________________ No banners. No pop-ups. No kidding. Introducing My Way - http://www.myway.com -- general wireless list, a bawug thing <http://www.bawug.org/> [un]subscribe: http://lists.bawug.org/mailman/listinfo/wireless
