Node Deployment Models and their Performance Parameters for Wireless Sensor Network: A Perspective

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Abstract

A Wireless Sensor Network (WSN) is a group of a densely distributed sensor nodes that monitors physical environmental information and send data to one or many base stations (BS) through wireless links. Node deployment is a fundamental issue which is to be solved in Wireless Sensor Networks (WSNs). Node deployment can be random or deterministic in nature. A proper node deployment scheme not only reduces the network cost but also increases degree, coverage and lifetime of a WSN with the reduction in delay. In this paper an overview of existing node deployment schemes are discussed then different parameters that enhance the efficiency are also highlighted. On the basis of that a new deployment scheme is proposed in which sensing area is divided into small circles and nodes are placed at the center and at the ends of the diameter. This pattern has two-coverage and has a degree of four. Simulation results show that proposed pattern uses fewer nodes and provides better coverage and degree than other schemes such as triangle, square and hexagon. In addition to this it is an efficient energy saver which provides minimum delay as compared to other schemes.

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