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PhD positions - 2013

Multipath routing and collaborative load balancing

Advisors : Thomas Noël, Jean-Jacques Pansiot, Stéphane Cateloin

Load balancing is a decision process that may be based on indicators which are local or received from other routers. The nature of these indicators should be adapted according to the context in which they are employed (wireless networks, sensor networks, code networks...). Variables relating to the quality of service could also come into consideration, for example by assigning real-time flows to one or more paths respecting specific constraints.

The main objective of this thesis is to focus on the collaboration between routers, which relies on an exchange of messages. These messages can be upstream requests such as throughput reduction ("backpressure messages"), messages allowing the admission of new flows , or disseminating information relating to the current conditions of routers (e.g. radio links quality, position and speed of a mobile node, or its battery level).

The qualitative or quantitative nature of the data exchanged, the triggers of these messages, their rate, and the action to be taken upon receipt are all behaviors to define and study. The candidate will have to evaluate the solutions he proposes, using simulation tools. Besides the quality of the distribution, convergence is a crucial point. The performance analysis will determine whether the proposed solutions are constantly evolving in an unstable state or whether tend towards an acceptable steady solution. In this case, the convergence time is an important indicator.

Full subject

To apply, please send your full CV, academic record, recommendation(s) and supporting letter to cateloin@unistra.fr.

Internet Service Provider Networks & Multi-Path Routing

• A Thesis subject "Internet Service Provider Networks & Multi-Path Routing" is available here: Models, IP Graphs & Routing . Please contact us to apply.

Past positions

• 2012 - Our group proposes a PhD student position (Profile). Please, contact us for any further information.