Browsing by Author "Mohamed Khalgui"

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3D Mobility, Resizing and Mobile Sink Nodes in Reconfigurable Wireless Sensor Networks based on Multi-agent Architecture under Energy Harvesting Constraints
(SCITEPRESS, 2020-01) Hanene Rouainia; Hanen Grichi; Laid Kahloul; Mohamed Khalgui
This paper deals with reconfigurable wireless sensor networks (RWSNs) to be composed of a set of sensor nodes, which monitor the physical and chemical conditions of the environment. RWSNs adapt dynamically their behaviors to their environment. The main challenge in RWSN is to keep the network alive as long as possible. We apply a set of solutions for energy problems by using 3D mobility, resizing and mobile sink nodes. These solutions are based on a multi-agent architecture employing a wireless communication protocol. Moreover, we develop an application named RWSNSim that allows us to simulate an RWSN and apply the proposed solutions. The performance of the proposed approach is demonstrated through a case study. The case study consists of surveying of fire in a forest which is simulated with RWSNSim application.
A New Simulation Tool for Sensor Networks Based on an Energy-Efficient and Fault-Tolerant Methodology
(Springer, Cham, 2023-07) Hanene Rouainia; Hanen Grichi; Laid Kahloul; Mohamed Khalgui
Recently, reconfigurable wireless sensor networks (RWSNs) have attracted a lot of attention in research and industrial communities. They became more complex and dynamic systems which led to the emergence of many challenges. The lack of energy, real-time constraints, and software and hardware failures are the most important challenges in RWSNs. Indeed, several solutions have proposed to come up with these challenges. To avoid huge costs in terms of money, time, and effort of real experimentation, networks’ simulation tools have become an essential necessity to study the impact of the proposed solutions. In this work, we propose a new energy-efficient and fault-tolerant methodology that composed of a set of solutions summarized in the use of mobile sink nodes (MSNs), application of the mobility, resizing, and test packet technique using a multi-agent architecture and an energy-efficient routing protocol. Moreover, we propose a new discrete-event simulation tool named RWSNSim designed for sensor networks (WSNs & RWSNs). We present its description, modeling, and provided services. The proposed simulation tool allows simulating sensor networks with and without application of the proposed methodology. Finally, we simulate a case study using RWSNSim in a 3D environment which proves the effectiveness of the proposed methodology and demonstrate the efficiency of the suggested simulation tool.
New Energy Efficient and Fault Tolerant Methodology based on a Multi-agent Architecture in Reconfigurable Wireless Sensor Networks
(SCITEPRESS, 2022-01) Hanene Rouainia; Hanen Grichi; Laid Kahloul; Mohamed Khalgui
Reconfigurable wireless sensor networks became more complex and dynamic systems. Their importance increases with time and more challenges appear. The most important challenges in RWSNs are the energy and software/hardware failure problems. In this paper, we propose a new methodology composed of a set of solutions summarized in the application of the mobility, resizing, and mobile sink nodes using a multi-agent architecture and an energy efficient routing protocol. It contains also a test packet technique to detect the malfunctioning entities and isolate them. Moreover, we develop a simulator named RWSNSim which allows simulating WSNs and RWSNs with and without application of the proposed methodology. It permits also to compare the different results using line charts. Finally, we simulate a case study with RWSNSim in a 3D environment to evaluate the performance of the proposed methodology.
Reconfigurable Wireless Sensor Networks Simulator (RWSNSim): A New Discrete-event Simulator
(SCITEPRESS, 2022-07) Hanene Rouainia; Hanen Grichi; Laid Kahloul; Mohamed Khalgui
Reconfigurable wireless sensor networks become an important area in research and industrial communities. With their development and spread, many problems and solutions have emerged. Network simulators have become an essential necessity to study the impact of these solutions on networks in order to avoid huge costs in terms of money, time, and effort if applied on the ground. In this paper, we propose a new discrete-event simulator for WSNs and RWSNs called RWSNSim. We present its description, modeling, and provided services. Finally, to demonstrate the efficiency of RWSNSim, we simulate a case study and detail the simulator functioning steps.