When you say dual radio... are you saying two radios devoted to the mesh
layer, or one radio devoted to meshing and one devoted to client access?
We have found in our tests that when two radios are devoted to meshing
the results are a little higher than your results below.
One test reports:
GW --- N1 --- N2 --- N3 --- laptop
Throughput results:
GW - N1 = 22,969
N1 - N2 = 23,936
N2 - N3 = 22,701
GW - laptop = 20,077
This is on a L2 mesh network with WPA2 enabled on all mesh links. Test
is performed with TCP traffic.
So as you can see, the throughput efficiency when using two radios
devoted to mesh is pretty high. Of course this also depends on the mesh
implementation. It might be a little less efficient if you're routing at
each node. (this is layer2)
-Matt
On Tue, 2008-07-15 at 14:18 -0700, Rogelio wrote:
I'm looking to compute the theoretical mesh limit throughput for dual
radio layouts. Does this look right?
Dual radio, egress at end of chain: 1-2-3-4-5e
Sustained throughput (min): 35 mbps / 10 hops to end egress = 3-4 mbps
Peak throughput (max):35 mbps / 5 nodes to end egress = 7 mbps
dual radio, with egress in middle unit: 1-2-3e-4-5
Sustained throughput (min): 35 mbps / 6 hops to mid egress = 6 mbps
Peak throughput (max):35 mbps / 3 nodes to mid egress = 13
mbps
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