Investigation on efficient localization and energy aware routing techniques for wireless sensor networks

Abstract

newlineWireless Sensor Network (WSN) is a collection of huge wireless sensor nodes which are connected wirelessly. WSN is used for sensing, monitoring and recording the physical conditions of the environment such as humidity, vibration, noise, pressure, radiation, etc. and passes the monitored information through the network to a destination node. Some characteristics of Wireless Sensor Networks include capacity to handle node failures, mobility, scalability to large scale network distribution, capability to ensure environmental conditions, reliable network, computation, Quality of Service and lifetime of each sensor node. The advantages of WSN include wireless infrastructure, centralized monitoring, flexibility and they provide accommodations for the new devices at any location at any time. Wireless Sensor Network applications include patient health care monitoring system, surveillance, transportation, agriculture, smart home, Energy control systems and other commercial areas. Localization is the process of estimating the original geographical local of sensor nodes by using information of some known nodes called as anchor nodes or beacon nodes. Localization is a major research issue which deals with wireless sensor nodes location and it has been studied for many years. The node localization drawback has received a high attention from the analytical community, therefore action that is vital and difficult work. The objective of the localization algorithm is to decrease localization error, increase accuracy with less computational cost and reducing additional hardware expense. However, localization accuracy is categorized by two important problems such as expensive hardware for