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== The Idea ==

Challenge:

In some stadiums, sports fans can view personal video feeds through their mobile devices. However, it is difficult to guarantee the reception reliability of these devices because each user
experiences different wireless channel conditions. 

Solution:

Take advantage of the multiplicity of radios on modern devices and their physical proximity in a stadium to allow cooperative packet recovery over a secondary network.

 * Wireless devices are connected to the principal network (WiMAX) to receive broadcast data such as live video feeds

 * A wireless device may lose some of the data sent over the principal network

 * Physically co-located wireless devices form an assistant network over WiFi to recover the lost data cooperatively from their peers

== Experiment Design ==

'''Step 1''': Choose the application that you want to run on the WiMAX nodes (or create a new one)

In this case, we are running a Python application that we've written ourselves, called ''coopshim'', that does the P2P cooperative recovery.  We're also running the OML enabled version of VLC to stream a video over the WiMAX network (i.e., the video feed that we are hoping to recover).

A number of already-OMLized applications are [http://mytestbed.net/projects/omlapp/wiki already available].


'''Step 2''': If you've written your own application, instrument it with OML so that you can collect measurements from it during experiment runtime

The coopshim and VLC applications were instrumented with the [http://pypi.python.org/pypi/oml4py/ Python] OML client module and the OML [http://mytestbed.net/projects/oml/wiki/Client_Programming C or C++] library, respectively.


A [https://rubygems.org/gems/oml4r Ruby] gem is also available.

== Experiment Execution ==

== Experiment Analysis ==

Google doc for charting results: [https://docs.google.com/spreadsheet/ccc?key=0AoPK6acX1JXFdFJ1ekx2VjRFMVJSaDZuRE1OdzZnTmc]