From: "Volker von Hoesslin @ SKBX Systems" <hoesslin.v@skbx.de>
To: "Wright, Brett" <Brett.Wright@cooperindustries.com>
Cc: linux-wireless@vger.kernel.org
Subject: Re: 80211s with DFS
Date: Tue, 13 Aug 2013 11:21:58 +0200 [thread overview]
Message-ID: <5209FAB6.5050602@skbx.de> (raw)
In-Reply-To: <475A4E02EFF4724A9E58F55A56AC131608CDEF2D@APEVS1.ap.ci.root>
> The real difficulty with DFS and 802.11s is what happens when a radar is
> detected? All mesh nodes need to be on the same channel, so there needs
> to be some consistent way of propagating a channel switch announcement
> to all wireless nodes.
>
indeed, thats a hard question. my first hint is looking at cisco
(http://www.cisco.com/en/US/docs/wireless/technology/mesh/7.0/design/guide/MeshAP_70.pdf
-> page 169), but 80211s has't a RAP so maybe there are only some tips
for a workflow.
i think there are diffrent possibilities:
1. the MAP that has a radar detection go sleep and wait till the channel
is clear to come back -> mesh will down :/
2. the mesh has to negotiate a new free channel via bacon-frames, maybe
generating preventively a list of channel for switching?
3. some other ideas ?
is there someone at work for a DFS implementation?
volker...
prev parent reply other threads:[~2013-08-13 9:22 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-11 21:03 80211s with DFS Volker von Hoesslin @ SKBX Systems
2013-08-12 9:11 ` Simon Wunderlich
2013-08-12 9:27 ` Volker von Hoesslin @ SKBX Systems
2013-08-13 1:33 ` Wright, Brett
2013-08-13 9:21 ` Volker von Hoesslin @ SKBX Systems [this message]
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