Subject: Re: CVS commit: src/sys/dev/ic
To: None <source-changes@NetBSD.org>
From: Rui Paulo <rpaulo@fnop.net>
List: source-changes
Date: 06/08/2006 23:30:46
At Thu, 8 Jun 2006 16:23:52 -0500,
David Young wrote:
>
> On Thu, Jun 08, 2006 at 08:56:41PM +0000, Rui Paulo wrote:
> >
> > Module Name: src
> > Committed By: rpaulo
> > Date: Thu Jun 8 20:56:41 UTC 2006
> >
> > Modified Files:
> > src/sys/dev/ic: rt2661.c rt2661var.h
> >
> > Log Message:
> > Bring the following change from OpenBSD:
> >
> > Keep track of the average RSSI using an Exponential Moving Average (EMA).
> > Use it to dynamically tune radio receive sensitivity.
> >
> > The idea is simple:
> > - increase sensitivity when the RSSI is bad to optimize throughput on
> > long distance to the AP, and
> > - decrease sensitivity when the RSSI is good to reduce noise level and
> > optimize throughput on short distance to the AP
> >
> > The EMA allows to smooth RSSI variations so we don't end up changing the
> > sensitivity too frequently. We check if it would be worth updating the
> > sensitivity every one second.
> > RSSI thresholds were taken from the Ralink Tech. Linux driver.
>
> I don't know if I buy it. What if you have both a near client and a
> far client?
As Garrett pointed out this makes sense on bss/ibss mode only. So,
what do you think about using it for those modes or adding a link0
flag ?