Comparative Analysis of Localization Techniques and Security Mechanisms in WSN

Wireless sensor network (WSN) contains spatially distributed independent sensor nodes to cooperatively monitor physical or environmental conditions. There are several research challenges in WSN, among them Localization and Security are more prominent. To spot location of the sensor node, each node can make the installation of GPS, but GPS is costlier and cannot provide exact location of node in an indoor environment. Manually fixing position reference on each sensor node is additionally difficult within the case of deep network. To beat the above drawbacks, in recent years most of the localization techniques make use of beacon nodes (anchor nodes) where only the present position of the beacon nodes must be known. While transformation of knowledge from one node to a different node, we would like our data to be secured from unauthorized person. So for this issue we would like to think about security aspects like encryption and decryption by using several trust key management techniques where each node is trusted by providing the safety keys. In our proposed research work, by considering localization and securing aspects, we develop location-based energy efficient trust aware localized key management protocol and hence during this paper we discuss about the localization techniques and security solutions utilized in wireless sensor networks.