[Olsr-users] about LQ, ETX and throughput

[Armansah Hs]

hello,
I've run several scenarios of OLSR.
I send a file from one laptop to the other laptop through several nodes and
I get a significant difference in throughput

scenario 1

-  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -
 -  -  -  -  -  -  -  -  -  -  -  -  node F




-  -  -  -  -  -  -  -  -  -  node D-  -  -  -  -  -  -  -  -  -  node E





-  -  -  -  -  -  -  -  -  -  node B-  -  -  -  -  -  -  -  -  -  node C




node A


link quality 1.00
A - B

B - C
B - D
B - E
C - D
C - E
D - E

F - E

so the packet will send from A - B - E - F
throughtput around 0.450 Mbit/s
I've run this scenario 5 times and get similar throughput

strangely, when node F mobile to get closer to node D
LQ F - D will be 1.00 and F - E rise to >2.00
the route will from A - B - D - F
this route verified by traceroute
throughput in this scenario ~1.3 Mbit/s (running about 5 times)

why this happen?
distance?

LQ 1.00
distance 20m
A ------------ B

LQ 1.00
distance 10m
A ----- B
get better throughput ?


Thanks
Arman
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