[Tccc] Internship on WSN
oana iova
otiovaatunistra.fr
Thu Mar 21 11:02:08 EDT 2013
Internship at University of Strasbourg, ICube Laboratory, France
Evaluation of RPL under different routing metrics
Supervisor : Oana IOVA, Fabrice THEOLEYRE, Thomas NOEL
Email to: oti... at unistra.fr
Team : Reseaux, ICube
Keywords : sensor networks, routing, RPL, metrics, experiments
Context
Today, the number of devices connected to the Internet exceeds the number
of people on Earth. Thanks to recent technological advances, a large number
of objects can be equipped with a unique identifier and communication
capabilities. They will integrate the Internet of Things.
Subject
In this context, designing efficient algorithms and protocols is essential
for the interoperability of these smart devices. The communication between
these objects is characterised by low data rate, high loss rate and
instability. A protocol that takes into account all these characteristics
has been recently standardised by the IETF : RPL - Routing Protocol for
Low-Power and Lossy Networks[1].
Routing protocols use metrics in order to compute a path for sending
packets to the destination. They are critical for determining the
performance of the network, since they have a direct impact on the
delivery, delay and the quality of the packets. RPL makes no exception : it
defines an objective function that uses one or more metrics to compute this
path.
The student will evaluate the impact of different metrics (in particular
MinHop, ETX, RTT and RSSI) on the performance of RPL. First, he will have
to get familiarised with the Contiki [2] operating system and the already
existing implementation of RPL. Afterwards, he will have to modify the
implementation of RPL in order to incorporate the different routing
metrics. The exhaustive evaluation of the different metrics will be made on
a platform for experimentation composed of 256 sensors : the FIT Equipex[3].
References
[1] T. Winter, P.Thubert et al. RPL : IPv6 Routing Protocol for Low Power
and Lossy Networks.
[2] Contiki : The Open Source OS for the Internet of Things.
http://www.contiki-os.org
[3] http://www.senslab.info
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