Effect of Beacons Deployment and Beacons Radio Range on HiRLoc and RAL Schemes in Wireless Sensor Network

In this current decade Wireless Sensor Networks (WSN) plays a crucial role in varieties of communication technologies especially in health care and habitat monitoring. Most of these applications of WSN are location aware, because localization provides a basis for node management and routing. Therefore, physical location of each node must be known during communication. However GPS can be considered as a location identifier of a sensor node but it is worth to mention that GPS is a great failure in terms of energy consumption and availability. To resolve these issues many localization algorithms are proposed so far. This paper evaluates two range free localization algorithms i.e. High-Resolution Robust Localization (HiRLoc) and Restricted Area based Localization (RAL) using factors such as locators’ density and locators’ radio range with localization error.