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Performance Optimization of Reconfigurable Real-Time Wireless Sensor Networks
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Orientador(es)
Resumo(s)
Wireless sensor networks (WSNs) can be seriously impacted by several changes in behavior. As a measure of optimality, a network should react in real-time. However, even if some reactions can make the system flexible, they can cause significant damages when they are not well-structured. Moreover, the scenarios of reconfigurations can affect several parameters within a wireless sensor network. Among these parameters it is possible to name the energy efficiency, the memory limitation within a node, the real-time constraints at the level of the nodes and the network in general. Either through the application or the transmission of the reconfiguration scenarios, some parameters are severely altered. A metamorphosis of the internal architecture of the nodes is proposed in this research work as well as a policy of communication between several nodes aiming to adapt the network to any change. The resulting proposition offers general efficiency in energy and real-time constraints. The efficiency is realized by the application of a pipelined approach, dealing with the incoming reconfiguration scenarios, and a communication protocol, based on a priority energy and deadline aware scheduling algorithm (a multicriteria scheduling algorithm). This protocol is capable of optimizing the transmission of both reconfiguration scenarios and sensed data simultaneously. The solution is tested on a network connecting several cars during an automobile journey and the results validate the efficiency of this proposition.
Descrição
This work was supported in part by the LISI Laboratory (INSAT at University of Carthage, Tunisia), in part by the PASRI (Ministry of High Study and Research, Tunisia), in part by the Universidade Nova de Lisboa, Portugal, in part by the Complex Systems Laboratory (Jinan University, China), in part by the European Commission through MOBIDOC Grant, and in part by the Science and Technology Development Fund, MSAR, under Grant 122/2017/A3. This paper was recommended by Associate Editor D. Akopian.
Palavras-chave
Communication protocol energy middleware Monitoring Optimization Pipelines Protocols Real-time systems reconfiguration Task analysis wireless sensor network. Wireless sensor networks Software Control and Systems Engineering Human-Computer Interaction Computer Science Applications Electrical and Electronic Engineering