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Date: Fri, 16 Oct 2015 12:26:48 +0200
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Subject: [B.A.T.M.A.N.] video streaming over batman-adv
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To: b.a.t.m.a.n@lists.open-mesh.org

Hi everybody,
I=92m an engineer working in a R&D Project using batman-adv protocol. =
We=92re
trying to develop a mesh network using linux devices with the objective =
of
transmitting video in streaming. Video is being generated with gstreamer
using UDP.
The application works relatively fine with 2 devices, but efficiency =
heavily
decreases when introducing a new node in the mesh network (information =
need
two jumps to arrive to destination). Introducing more jumps in the =
network
is exponentially worst. We have been expecting a better behavior of this
protocol, since level 2 routing should be transparent  (just increasing
delay when increasing the number of nodes).
We are using batman version 2015.0,  over wifi interfaces, and our =
streaming
applications is working only point-to-point (not multicast or =
broadcast).
The nodes in between server and client are working just as wireless
repeaters using batman-adv.
We also discovered that worst case happens when changes in batman =
routing
tables are happening (sometimes, client is able to reach server in just =
one
jump, but with low quality, and chooses that option instead of jumping
through the repeater node, with better quality). When that happens, =
we're
droping lots of packets.
Any of you haver tried batman-adv for video streaming? Which was the =
maximum
number of jumps between batman nodes that you can manage maintaining a =
good
video quality?=20
Can you recommend any specific configuration for improving batman =
behavior?