Résumé:
This work focuses on the use of a mobile sink to improve data collection in wireless sensor
networks (WSN). We considered application scenarios involving event-driven data collection
and random movement of the sink. In such cases, the need arises to implement a solution that
continuously provides sensor nodes with the most up-to-date position of the sink. To address
this issue, we proposed our own solution, named EMSPU, which stands for «Efficient Mobile
Sink Position Update Protocol». This solution provides the necessary answers to various questions
posed by updating the sink’s position and data collection, specifically : determining which
network nodes should continuously maintain the most recent position of the sink, the method
for updating this position while minimizing the communication load caused by the update, and
finally, the collection process each sensor node should follow when it wants to send its data to
the sink. To validate our solution, we integrated it into the NS-3 simulator and compared it with
the baseline solution. Various experiments were conducted, yielding very positive results.
