#1911: madwifi problems with power saving STAs
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Reporter: [EMAIL PROTECTED] | Owner:
Type: defect | Status: new
Priority: critical | Milestone:
Component: madwifi: driver | Version: trunk
Resolution: | Keywords: power saving
Patch_attached: 0 |
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Comment (by foodoc):
no. no. I have a Intel Card too and let me explain who I see it.
the basics: see 802.11-2007.pdf
when a station _goes_ into powersaving... It will only wake up now and
then listen to the beacons. And then it'll powerdown again UNTIL "one"
beacon comes in, that contains a TIM where the Station's AID or broadcast-
bit is set... Then the Station will wake up and tell the AP about it.
So, and what does the Intel do? It bursts out a huge number of NULL-Funcs
without waiting for any beacon... Just to generate traffic and tell the AP
that it was _active_. This is a known workaround for all APs with a broken
powersaving feature, because noone got it right.
--
Ticket URL: <http://madwifi.org/ticket/1911#comment:3>
madwifi.org <http://madwifi.org/>
Multiband Atheros Driver for Wireless Fidelity
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