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Probabilistic Methods for Routing in Wireless Sensor Networks Master degree subject
 

Summary: Probabilistic Methods for Routing in Wireless Sensor Networks
Master degree subject
Karine Altisen St´ephane Devismes Pascal Lafourcade
Verimag Lab
Contacts: {Karine.Altisen, Stephane.Devismes, Pascal.Lafourcade}@imag.fr
Scientific Context. Recently, there was a growing interest in wireless sensor technologies. Such tech-
nologies have large-scale applications such as earthquake monitoring or military applications and small-scale
services such as home automation.
Sensors are small devices that can generate data about the environment (for example, measure of tem-
perature) and can used them for specific services (for example, emit an alarm when surrounding temperature
is too high). They embed wireless communication capabilities for exchanging data between them, shaping
thus an implicit network called a Wireless Sensor Network (WSN).
A crucial problem for WSN is the one to transmit data from a given source sensor to a given destination.
It is called routing. A routing protocol encapsulates the data into messages and then computes a path in
the WSN to move them from sensor to sensor until reaching the target.
Routing protocols for WSN have two specifities. First, communications within a WSN are subject to
faults such as link failures due to interferences and crash failures due to the low-power batteries of sensors.
The structure of a WSN is highly dynamics and routing paths cannot be computed statically and once for
all. Second, sensors can only communicate with other nearby sensors: routing paths can only be computed
locally, piece by piece thanks to distributed algorithms.

  

Source: Altisen, Karine - Laboratoire VERIMAG, Centre National de la Recherche Scientifique (CNRS)

 

Collections: Computer Technologies and Information Sciences