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Date: Wed, 11 Jan 2012 10:50:28 +0200
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Subject: Re: DFS implementation status update
From: "Goldenshtein, Victor" <victorg@ti.com>
To: Simon Wunderlich <simon.wunderlich@s2003.tu-chemnitz.de>
Cc: linux-wireless@vger.kernel.org, hostap@lists.shmoo.com,
	kgiori@qca.qualcomm.com, mcgrof@frijolero.org,
	zefir.kurtisi@neratec.com, adrian.chadd@gmail.com, j@w1.fi,
	Johannes Berg <johannes@sipsolutions.net>,
	Luciano Coelho <coelho@ti.com>, Assaf Azulay <assaf@ti.com>,
	"Divinsky, Yonatan" <yoni.divinsky@ti.com>,
	Igal Chernobelsky <igalc@ti.com>, adrian@freebsd.org,
	nbd@nbd.name
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Hello Simon,


>
> Do you plan to support IBSS/Ad-Hoc as well?
>

For now we don't have such plans.


>
> I guess you're implementing the channel switch part for now, any plans
> on the rest of 802.11h? (station measurement, TPC, etc).
>

Same here, for now the main implementation is the channel availability
check, radar event and the channel switch mechanism.

>
> Do you plan to allow band selection or channel selection? For example,
> it would be desirable to only select indoor channels or outdoor channels,
> exclude weather channels (5600-5650 MHz) or only select a specific subband where
> high tx power is allowed.
>

For now we use random channel selection after radar event, but later
on this can be changed to more sophisticated algorithms.

> I'm also not sure if pre-selecting a start channel is conforming to
> ETSI EN 301 893 V1.5.1 - as I'd interpret it (but I might be wrong), a
> channel should always be randomly selected from the available channel list
> (4.7.2.6 Uniform Spreading) - there is not test specified for this though (Annex A).
>
> I'm also missing the channel switch announcement for associated clients in your
> flow chart, but maybe you skipped this to keep it simple. It looks like a good approach,
> I'm really looking forward to your patchset.
>

Yep, you're right the CSA is left out for the simplicity ;)


-- 
Thanks,
Victor.