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In this tutorial we will show how the TUB testbed can be accessed remotely by an experimenter to conduct cognitive sensor network experiments. To this end we will explain how the testbed web interface can be used to reserve a job, to install custom sensor node images and how to extract data from a sensor network application during an experiment in real-time. As an example, we will visualize the multi-hop routing topology of a simple data collection in real-time. In addition, we will generate controlled RF interference and demonstrate its effect on the routing topology. In parallel we will use CR devices to extract spectrum sensing information, which can be used to assess the spectrum occupancy during an experiment and thus validate the RF interference conditions.

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