Probes, which can be thought of as beacons from a AP. The STA has 2 ways to find APs. Passive and Active. Passive, it just starts at channel 1 and waits X time for a beacon, then moves to the next channel (this can be in any order based on manufacture, seams like it would be faster to passively wait on the odd even channels since most radios will receive a packet that is off by 1 channel). Active the send out a probe request asking for AP ESSIS/BSSID X/Y and follows the same pattern as passive, but waiting only as long as its probe response timeout allows for. This is what makes some STA's re-associate really fast, and others slowly.
On Fri, May 20, 2011 at 10:14 PM, Josh Luthman <j...@imaginenetworksllc.com> wrote: > That seems like a waste, what does it tx? > > On May 21, 2011 1:10 AM, "Jeromie Reeves" <jree...@18-30chat.net> wrote: >> Yup they do. >> >> On Fri, May 20, 2011 at 11:51 AM, David E. Smith <d...@mvn.net> wrote: >>> >>> >>> On Fri, May 20, 2011 at 13:35, Josh Luthman <j...@imaginenetworksllc.com> >>> wrote: >>>> >>>> Why would the radio ever be transmitting if it's in station mode? I >>>> thought it only listened this way (and should replicate across Tranzeo, >>>> other 802.11 product, etc). >>> >>> I honestly thought that even unconnected stations periodically >>> transmitted >>> beacon frames, but it's been rather a long time since I read that >>> O'Reilly >>> book on the 802.11 standards. >>> >>> David Smith >>> MVN.net >>> >>> >>> >>> >>> >>> -------------------------------------------------------------------------------- >>> WISPA Wants You! Join today! >>> http://signup.wispa.org/ >>> >>> -------------------------------------------------------------------------------- >>> >>> WISPA Wireless List: wireless@wispa.org >>> >>> Subscribe/Unsubscribe: >>> http://lists.wispa.org/mailman/listinfo/wireless >>> >>> Archives: http://lists.wispa.org/pipermail/wireless/ >>> >> >> >> >> -------------------------------------------------------------------------------- >> WISPA Wants You! Join today! >> http://signup.wispa.org/ >> >> -------------------------------------------------------------------------------- >> >> WISPA Wireless List: wireless@wispa.org >> >> Subscribe/Unsubscribe: >> http://lists.wispa.org/mailman/listinfo/wireless >> >> Archives: http://lists.wispa.org/pipermail/wireless/ > > > > -------------------------------------------------------------------------------- > WISPA Wants You! Join today! > http://signup.wispa.org/ > -------------------------------------------------------------------------------- > > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
