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In this paper, we investigated the issue of energy conservation, in the WSNs, by keeping a minimum number of sensor nodes to operate in active mode as well as ensure network connectivity. To address this problem, we proposed a Geographical Topology Control (GTC) Protocol to reduce energy consumption in wireless sensor network by sleep scheduling among(More)
One of the main design challenges, in wireless sensor networks, is to save energy of sensors and obtain a long system lifetime without sacrificing the quality of network coverage and connectivity. Topology control based sleep scheduling is the primary technique of energy saving which consists to exploit node redundancy and save energy by putting as many(More)
Maximizing the coverage area while maintaining a lower cost of deployment has always been a challenge, especially when the monitoring region is unknown and possibly hazardous. Many coverage-preserving algorithms have been proposed for maintaining k-coverage. The k-coverage configuration is extensively exploited to ensure that each location is covered by at(More)
Coverage is one fundamental problem in wireless sensor networks, it reflects how well an area is monitored or surveyed by sensors. Some applications require a high degree of coverage as it would want a region to be monitored by multiple nodes simultaneously. Nevertheless, the failure of one or several sensors, can paralysis the area coverage unless it was(More)
Topology control based Duty-Cycling is an efficiency approach that can enhance the sensor network lifetime. In this paper, we propose a Group-based Scheduling Protocol (GSP) for wireless sensor networks which exploits the network density and divides the nodes into groups and only one node in each group remains active. GSP identifies equivalent nodes in(More)