Unit:
Κατεύθυνση / ειδίκευση Δικτύωση Υπολογιστών (ΔΙΚ)Library of the School of Science
Author:
Λουκίδης Γεώργιος
Supervisors info:
Επίκουρος Καθηγητής Ευστάθιος Χατζηευθυμιάδης
Original Title:
Μηχανισμοί και Πρωτόκολλα για τον Επαναπρογραμματισμό Ασυρμάτων Δικτύων Αισθητήρων
Summary:
The code dissemination and reprogramming mechanisms of wireless sensor networks
are key features to meet the needs of changing the behavior, operating
requirements and modernization of the network, as well as troubleshoot
problems. Reprogramming is the process of dynamic updating of the software
running on the nodes/sensors and a key feature of the operating system. It is
considered “compulsory process” because of the predominantly non-accessibility
of nodes after deployment in space/operating environment and it is usually
implemented as an independent service on the operating system of each node.
In this thesis we present the design factors of reprogramming protocols for
wireless sensor networks and the standard protocols and mechanisms for code
dissemination prevailing today, after giving a brief description of the
functionalities and operating systems carried out in these networks. Finally,
we attempt to implement the code dissemination mechanism of a probabilistic
forwarding epidemic model through a graphical simulator, simulating the
“request” and “reception” of mobile agent from a specific node of the network.
Collecting and processing the outcomes of multiply runs, through an environment
specially designed for this purpose, we optimize main parameters, while making
comparisons of the features with a well known reprogramming protocol,
evaluating the outcome, showing the positive and negative aspects of this
approach.
Keywords:
wireless sensor networks, reprogramming protocols, simulation, epidemic model, probabilistic forwarding
Number of index pages:
7-8
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