Abstract
Wireless Sensor nodes are power-constrained devices and the lifetime of the nodes is significantly influenced by the deployment of the nodes. In the appropriate deployment of the nodes leads to inefficient network energy utilization which results in a minimized network lifetime. To enhance the network lifetime within the limited battery power, hierarchical heterogeneous routing has been proposed by various researchers and have significantly prolonged the network lifetime. In heterogeneous wireless sensor networks, the researchers have addressed mainly energy efficiency of the network but node deployment has been rarely addressed. Node deployment is a critical issue in heterogeneous wireless sensor networks since the nodes in these networks are energized with different energy levels. The simulation results obtained proved that the appropriate deployment of nodes can lead to a substantial amount of energy conservation.
Highlights
Wireless sensor networks (WSNs) are composed of randomly deployed sensor nodes for sensing and data gathering within its sensing radius
Deployment of sensors nodes is an essential aspect in WSNs as it significantly affects the performance of the network, such as connectivity [1], network lifetime [2], coverage area [3] and energy efficiency [4]
Reference [17] investigated the maximum coverage quality complications under the condition of restricted entire budget in an extensive variety of regional occurrence monitoring with WSNs, and used the relationship of the heterogeneous sensor nodes which have varied confidence to decrease the number of nodes, and lastly put forward an estimated algorithm based on greedy routing for nodes placement optimization
Summary
Wireless sensor networks (WSNs) are composed of randomly deployed sensor nodes for sensing and data gathering within its sensing radius. Deployment of sensors nodes is an essential aspect in WSNs as it significantly affects the performance of the network, such as connectivity [1], network lifetime [2], coverage area [3] and energy efficiency [4]. Cluster Heads (CHs), Cluster Member Nodes (CMs), and the base station (BS) [6]. The nodes having high energy levels are selected as cluster heads. Since heterogeneous wireless sensor networks (HWSN) are comprised of multi-tier nodes having different energy levels, the random deployment of nodes is not a feasible solution [4]. The node deployment significance on the lifetime of the nodes in a randomly deployed network has been mainly unaddressed in clustering protocols. In clustering protocols long haul transmission is involved, the inappropriate deployment of the nodes will affect the network coverage, transmission rate and as well as lifetime of the overall network, making the nodes deployment vital problems in clustering protocols
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