Hi Pau,

I agree with your assessment:  11s brings a number of benefits over ad-hoc.
   In addition to the ones you listed, I would add:

6. symmetric security (SAE)
7. customizable path selection mechanism (which you could use with your
custom routing)
8. power save
9. interoperability:  there are some incompatible ad-hoc implementations
out there as WFA did not test above 11 Mbps.  open80211s made vendor
neutrality and interoperability a priority since day one.

The only point that is debatable is 2: there aren't that many cards/drivers
that support it.

Best of luck,


Javier

On Tue, Sep 30, 2014 at 6:31 AM, Pau via Devel <[email protected]>
wrote:

> Hello.
> I'm one of the developers of the libre-mesh project [1]. Our aim is to
> develop an OpenWRT based solution for quick and easy building free/libre
> mesh networks.
>
> Our network architecture is quite different from the common ones, we are
> mixing two routing protocols in layer2 and layer3 (batman-adv and bmx6).
> You can find more information about it here [2].
>
> Until now we were using Ad-Hoc as link layer, however recently we have
> started to consider the idea of using 11s instead. We are not interested
> in the routing layer (HWMP) because we need some features provided by
> batman-adv, so we disable it by setting the option mesh_forwarding to
> false.
>
> I've already performed some tests and the results look quite good. Using
> 11s instead of ad-hoc bring us some advantages which are:
>
> 1. Better support for 11n
> 2. Better compatibility with drivers
> 3. You can bridge an 11s interface to another interface if necessary
> 4. It does NOT try to synchronize the TSF counter of your wifi card
> 5. You can create up to 8 11s VAP mixed with adhoc, AP, client, etc...
> 5. Get benefit of a newer protocol design
>
> I would like to know your opinion on this topic. None of us now deeply
> how 11s works, so we don't really know if what we are trying to do is a
> madness or a good idea. It would be also very interesting for us to know
> which options can we tun for getting better profit of using 11s as link
> layer.
>
> Thank you for your efforts on developing 11s.
>
> Cheers.
>
> [1] https://dev.libre-mesh.org/projects/libre-mesh
> [2]
> https://dev.libre-mesh.org/projects/libre-mesh/wiki/NetworkArchitecture
> --
> ./p4u
>
>
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