Hi David,

Thanks for your quick reply.

On Saturday 27 September 2014 06:20 PM, David Lang wrote:
> 
> This actually sounds very typical for the way that a wireless network
> collapses under load. This behavior is why the OLPC dream of using mesh
> networks for everything ended up failing.
> 
> If you can, deploy more nodes with lower power per node to reduce the
> interference. I'm not familiar with batman, but more nodes also gives
> you more channels to play with (assuming you can use multiple channels)

BATMAN does a layer2 meshing without any complicated routing required
between nodes. It was all working fine as long as we had 5 nodes and 3
of which were connected to the cabled LAN.

Do you suggest we use multiple channels and multiple backhauls on 5GHz
for different set of nodes, instead of creating a single mesh? We can do
that if it helps.

> I notice that you use 40MHz channels for 5GHz, unless you have wired
> connections between the nodes, this seems like it's probably a waste as
> you only have 20MHz channels on 2.4GHz. In theory it takes less time to
> transmit the data on the 40MHz channels, but in practice I'm not sure it
> really gains you a lot (it definantly doesn't gain you as much as if you
> had two 20MHz channels operating independently in that area)

The gateways are connected to 100Mbit/s switch directly that is why I
thought of using HT40- in order to provide full LAN bandwidth to the
stations in case it is available. I can also try to change it to HT20
and see if it makes any difference.

> I cover a lot of this in the talk I gave at LISA in 2012
> https://www.usenix.org/conference/lisa12/building-wireless-network-high-density-users.

Thanks for the link. I am going to study and decide on the strategy.

Regards,
Nishant
_______________________________________________
openwrt-users mailing list
[email protected]
https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-users

Reply via email to