[wiki:Internal/Mapping/Topologies Topologies] = Topology 4: Concurrent Traffic Sessions (MAC Fairness) = == Goal == This represents a typical scenario with multiple indepdent traffic session sharing a same 802.11 channel. == Steps == In order to achieve this, the following steps are needed * run the nodehandler script in the grid: '''./nodehandler macfair''' * run the post-process perl script: '''./dbprocess.pl ''' * view the EPS file named "gnuplot_graph1.ps", which contains throughput comparison plots for each flow. == Scripts == * The nodehandler script (RUBY) to run this experiment: * [http://www.orbit-lab.org/attachment/wiki/Internal/Mapping/Topologies/Topo4/macfair.rb 4flows with Master/managed settings] * The [http://www.orbit-lab.org/attachment/wiki/Internal/Mapping/Topologies/Topo4/dbprocess.pl perl script] to postprocess database and plot the results in EPS file. * The gnuplot configuration file: [http://www.orbit-lab.org/attachment/wiki/Internal/Mapping/Topologies/Topo4/fairplot.gp fairplot.gp] == Sample Results == We plot the (Throughput, RSSI, PHY rate) for each individual session using the experiment script provided above. [[Image(perflowplot.PNG)]]