
For comparison, below are simulation results from running the 4
scenario files in cmu/span/sim/scen under 802.11, Span with 802.11
PSM, and just 802.11 PSM. In each simulation there were 120 nodes. 20
nodes were sender and receivers. these nodes were placed at random
along two edges of the simulation area, and are inmobile. The rest of
the 100 nodes were initially randomly placed in the simulation area.
They move throughout the simulation at a maximum speed of 20 m/s and
pause time of 60 seconds. Each simulation lasted 600 seconds. 20 CBR
flows run across the simulation area, from a sender on one edge to a
receiver on the other edge. Senders and receivers are coordinators
automatically, while the rest of the 100 nodes go through the Span
coordinator election process.

mode             scen     loss     lat  hops  power(mW)
-------------------------------------------------------
802.11 1150-1150-n120    0.013    24.8   6.2        885
psm    1150-1150-n120    0.016  1193.0   6.3        721
span   1150-1150-n120    0.006   139.4   7.2        421

802.11 1000-1000-n120    0.019    21.2   5.2        885
psm    1000-1000-n120    0.020   984.3   5.2        743
span   1000-1000-n120    0.008   121.8   6.1        393

802.11   750-750-n120    0.008    14.4   3.9        887
psm      750-750-n120    0.007   710.1   4.0        806
span     750-750-n120    0.002    63.8   4.6        350

802.11   600-600-n120    0.002     8.9   3.0        883
psm      600-600-n120    0.003   520.0   3.0        834
span     600-600-n120    0.001    40.9   3.6        333

