Re: [ath5k-devel] [PATCH 00/10] ANI for ath5k

["Luis R. Rodriguez" <lrodriguez@atheros.com>]

On Thu, Mar 25, 2010 at 02:10:55PM -0700, Derek Smithies wrote:
> Hi,
> On Thu, 25 Mar 2010, Bruno Randolf wrote:
> > This is ANI for ath5k.
> Fantastic!!
>   I have used your initial ani patch set here, and it did help througput 
> etc.
> >
> > - Improve beacon averaging algorithm for IBSS: Maybe we should keep track of
> >  the average RSSI on a per-node basis and use the minimum of those in order
> >  not to loose far away nodes? The other option would be to limit the
> >  parameters we control similar to AP mode.
> 
> We have talked about this before. I thought that we agreed 
> that adhoc nodes may
>    a)be activated at any time
>    b)be positioned at an unknown distance apart
> 
> it therefore makes no sense to average the RSSI over the current nodes.
> If all the current nodes in the network are close by, the ani algorithm 
> will wind the sensitivity down. Consequently, if a remote node is 
> started, it will not be able to connect. Yet, the remote node should 
> have been able to connect as the slot times etc were long enough, 
> and the link budget is fine...
> 
> So yes, the only way to 
> > - Improve beacon averaging algorithm for IBSS:
> is to turn ani off. which means the issue you raised else where of 
> providing reasonable userland controls (not via debugfs) becomes 
> important.

If ANI helps IBSS so much then why not just default to turning it
off within the driver?

  Luis