After WSN nodes have been deployed in a target (test) environment, the nodes will try to find each other and determine the network's topology (connectivity) and the characteristics of their links. This information is then collected and analyzed. It can be used for determining the performance of the network, such as finding bottlenecks and other potential communication problems in the network. The collected data could also be used in a simulator to replicate the real environment there.

In this project, the existing test-bed of the CoRe research group will be used. The students will design and implement a system for measuring a WSN network's topology. It includes a literature study on existing nodes discovery protocols and a choice of what protocol to implement. The next step is to collect so much data about the topology, link quality, and interference so that is can be used in a simulator to mimic the network and its behaviors. A small test of a simple protocol in both the real network and the simulator should be done to verify and study the difference between the two.

The project consist both of a literature study as well as an implementation. All team members must be involved in both parts. The result should be both a report and a (smaller) demo.

The team size should be 3 - 5 members.

• We will use Contiki and nodes suitable for Contiki, such as Zolertia Z1 sensor nodes.
• For the simulator, we will use Cooja, which is part of Contiki.

To be decided. Martin Jacobsson responsible.