DYNAMIC SENSOR RELOCATION TECHNIQUE BASED LIGHT WEIGHT INTEGRATED PROTOCOL FOR WSN
Joy Winston, P. Balasubramanian · 2014
In the past few years, it is observed and noticed that we are utilizing Wireless Sensor Networks with greater interest for various popular and crucial applications. It represents an emerging set of technologies that will have profound effects across a range of Medical, Industrial, Scientific and Governmental Applications. This Wireless Sensor Network is made up of a group of Sensor Nodes or Devices and each device possesses the ability to monitor some aspect of its environment and each is able to communicate its observations through other devices to a destination where data from the network is gathered and processed further for our requirements. Sensor Nodes are operating autonomously even in unattended environments and potentially in large numbers and that too we could not be deployed manually in a hostile or harsh environment. Hence, we could deploy randomly those large numbers of Sensors in Hostile / Harsh Environment and it leads coverage issue, which is leading to connectivity loss and moreover, sometimes, the Sensor Nodes may failure which too causes Connectivity Loss and hence for sensitive services we couldn’t use this. Thus, while deploying Sensor Nodes for sensitive services, we need to focus both the Coverage and Connectivity. As we are unable to deploy Sensors manually, the Sensor Relocation Scheme had proposed earlier, where the Sensors themselves moving towards required position to make proper Coverage and Connection. As it is one of the smartest techniques, this research work has studied Dynamic Sensor Relocation Scheme thoroughly and implemented. From our experimental results, we noted that this work achieves good coverage when Nodes getting failure or becoming communication holes. But however this approach consuming more Energy for continuous migration, which minimizes the lifetime of Sensor Networks. And also it is identified that, this approach fails to focus Connectivity issue due to node migration and Secured Communication too, which may compromise our collecting data. To address these serious issues, this research work has proposed an efficient Dynamic Sensor Relocation Technique based Lightweight Integrated Protocol(LIP), which is addressing Secured Coverage, Connectivity, Communication and urity. We have implemented our proposed work and studied thoroughly. .