wiki:GEC15Agenda/WiMAXTutorial/SelfGuided

Version 36 (modified by Fraida Fund, 7 years ago) (diff)

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This page describes the experiment life cycle of a GENI WiMAX experiment.

If you want to jump right in and run a sample experiment, skip to the Experiment Deployment and Execution section.

Support

To learn more about GENI WiMAX within the context of a non-trivial experiment from a major area of computer science or networking research, please attend the WiMAX Tutorial at GEC15.

Use these links to get more information about:

Use these addresses to get support for:

Or find any of these people at any GEC and ask them all your WiMAX questions:

http://witestlab.poly.edu/priv/fraida.png
Fraida Fund
NYU-Poly
http://witestlab.poly.edu/priv/ivan.png
Ivan Seskar
WINLAB
http://witestlab.poly.edu/priv/manu.png
Abhimanyu Gosain
Raytheon BBN

Establish Environment

Get an account

Temporary tutorial credentials will be available during the Experimenter Drop-in Help Session at GEC15. Because there is some time delay between account creation and account approval, you won't be able to create an account and immediately start using it at that session.

However, if you would like to create an account for your later use, you can register at either of the open-access GENI WIMAX testbeds:

Reserve resources

Reservations will have been created ahead of time for the temporary tutorial credentials used in the Experimenter Drop-in Help Session at GEC15. But for future reference, you may visit the following links (using the account you have set up on a GENI WiMAX testbed) to reserve WiMAX resources:

See more information about the resources at each site.

Experiment Design

Resources

A GENI WiMAX testbed includes a number of components (pictured below):

  • A console that runs a set of services that help you manage and execute your experiment
  • A WiMAX base station
  • A set of nodes, which may include laptop computers, Android phones, or special PCs colloquially referred to as "yellow boxes."

http://witestlab.poly.edu/images/stories/testbed.png

You can read more about the specific resources available on each testbed at the following links:

NB: The WINLAB facility includes multiple testbeds. WiMAX nodes are available on the following testbeds:

  • grid (make a reservation for grid and wimax)
  • outdoor (make a reservation for outdoor and wimax)
  • sb6 (make a reservation for sb6 and wimax)
  • sb7 (make a reservation for sb7 and wimax)
  • sb8 (make a reservation for sb8 and wimax)
  • sb4 (make a reservation for sb4 - you do not need to also reserve wimax, because sb4 has its own base station that is reserved automatically).

The NYU-Poly facility only has a single testbed. When you make a reservation at NYU-Poly, you have reserved the entire testbed, including all nodes and the WiMAX base station.

Services

OMF

OMF is a platform to support rigorous and repeatable experiments in a wireless environment. It provides an unambiguous way to describe an experiment, thus enabling repeatability.

One OMF experiment can run on any GENI WiMAX testbed with minimal modifications.

NB: You don't have to use OMF to run experiments on a GENI WiMAX testbed - you may also run experiments manually by logging on to each node via SSH and executing commands on the nodes yourself. However, once you have figured out exactly how you want to configure your resources and what commands you want to run on them, OMF makes it much easier to run, refine, and repeat your experiment.

OML

OML is a measurement library and framework that provides a method for instrumenting experiments to stream measurements to a storage server during execution. The measurements are saved in a standard database format, which you can retrieve later for data analysis and visualization.

WiMAX

The WiMAX base stations are designed to "just work" in their default configuration. However, if you would like to change the settings on the base station, you can find the syntax here (refer to the TOC on the right of the page for links to specific settings).

Applications

A number of commonly used applications and utilities (e.g. iperf, VLC) have been instrumented with OML to enable their use in OMF experiments. More information about these applications is available at:

There are also several libraries available to help you instrument your own applications for use with OML:

Experiment Deployment and Execution

A set of simple tutorial exercises have been prepared to help familiarize you with the process of running an experiment on a GENI WiMAX testbed.

To run these exercises, use an SSH client (such as Putty for Windows) to log on to your testbed console using the username and password that have been provided for you.

For example, if your username is "tutorial01", your password is "gec15", and your console is "witestlab.poly.edu", then SSH into tutorial01@witestlab.poly.edu and enter gec15 when you are prompted for a password. If you are using the sb4 testbed at WINLAB, your console is sb4.orbit-lab.org.

Experiment Analysis

For instructions on archiving experiment data and visualizing results, please refer to these GIMI-WiMAX instructions.