wiki:WiMAX/WiMAX-Tutorial/Dash/07

Version 11 (modified by Fraida Fund, 6 years ago) (diff)

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Testing other DASH Policies

Repeat this experiment by loading the client image for another policy and re-running the experiment.

omf tell -a offh -t node1-3.outdoor.orbit-lab.org
omf load -i gec17_dash_policy_2.ndz -t node1-3.outdoor.orbit-lab.org
omf tell -a on -t node1-3.outdoor.orbit-lab.org
omf exec -C omf-expctl.yaml wmxtutor-dash.rb 
omf tell -a offh -t node1-3.outdoor.orbit-lab.org
omf load -i gec17_dash_policy_3.ndz -t node1-3.outdoor.orbit-lab.org
omf tell -a on -t node1-3.outdoor.orbit-lab.org
omf exec -C omf-expctl.yaml wmxtutor-dash.rb 

and pushing the data and log files to iRODs for each experiment run:

iarchive -e expID -c dash

try creating the same plots as before from the new expID.sq3 file.

A description of some sample results is given on the next page.

You can also try creating other plots if you have extra time. For example:

  • In the 'wmxstat_status' table, plot 'oml_seq' on the x-axis and 'cinr' on the y-axis to see how WiMAX signal quality changes over the duration of the experiment (it should be by very little, only a few dB at most).
  • Find out the average video rate for each policy by plotting (in the 'vlc_dashRateAdaptation' table) 'oml_sender_id' on the x-axis and 'chosenRate_bps' on the y-axis (this will generate one data point which is the average value)
  • Find out the actual rate at which each segment is downloaded by plotting 'oml_seq' on the x-axis and 'empiricalRate_bps' on the y-axis (in 'vlc_dashRateAdapatation')
  • Verify the policy behavior we described by plotting 'oml_seq' on the x-axis and 'decisionRate_bps' on the y-axis (in 'vlc_dashRateAdapatation')


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