Increasing Network Lifetime by Optimum Placement of Sensors in Wireless Sensor Networks

By omitting sensors which have incorrect action in a wireless sensor network, network is reorganized again and it causes the consumption of energy and may also cause that some parts of the network go out of the coverage. The functionality of the network will be lowered when a node is thrown out from the network, so designing a sensor network with low consumption of energy is one of the prominent trends today. In this paper, we suppose that the nodes are arranged in a grid typology, and according to the limitation of energy for each sensor, we want to cover the maximum of network with the minimum active sensors. To achieve this goal, we have used a mask with specific dimensions and features. This mask is placed on different parts of the network and it creates a division according to the sensor off or on with the aim of increasing the network lifetime and maximizing coverage of the network. With respect to the math structure in the proposed algorithm, the total network lifetime will be considerably maximized.