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Wireless sensor networks (WSNs) consist of an enormous number of tiny sensor nodes deployed in huge numbers which are able to sense, process and transmit environmental information to the base station (BS) for a variety of applications. Energy efficiency is one of the primary concerns for maintaining WSN in operation. In this study, an energy efficient clustering protocol based on K-means algorithm...
Energy constraints of sensor nodes in wireless sensor networks (WSNs) is a major challenge and minimising the overall data transmitted across a network using data aggregation, distributed source coding, and compressive sensing have been proposed as mechanisms for energy saving. Similarly, use of mobile nodes capable of relocating within the network has been widely explored for energy saving. In this...
The Wireless Sensor networks (WSNs) consist of sensor nodes which are deployed in environment where the exhausted batteries of nodes are difficult to charge or replace. Main problem in WSNs is Energy consumption which is caused due to overhearing, idle listening, redundant transmission and collisions. To improve the energy efficiency of WSNs different protocols are designed. Efficient Multi-hop Broadcast...
The conventional sensor MAC is unconcerned with data aggregation. Therefore, this paper proposes a new MAC level Data Aggregation (MDA). The goal is to reduce energy consumption in WSN (Wireless Sensor Network). The MDA has two functions that are discriminative to the conventional sensor MAC, in that it achieves efficient aggregation and the avoidance of Network beacon collisions. The MDA is designed...
This paper proposes a new approach to save energy in a wireless sensor network (WSN) in which sensors lie on a uniform rectangular grid. At each data-acquisition/sampling instant, only a randomly selected subset of all the sensor nodes acquires and transmits the data. This problem can be solved by semi-definite programming, which is based on fixed point continuation with Bregman iterations.
Wireless sensor networks are characterized by dense deployment of energy constrained nodes. Owing to the deployment of large number of sensor nodes in uncontrolled hostile or harsh environments and unmonitored operation, it is common that a node becomes inactive due to a node failure or exhaustion of the respective energy resource. Such node failures result in the reduction of the cluster quality...
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