A Blockchain Based Hybrid Localization Scheme For Wireless Sensor Networks Using Distance Vector Hop And Received Signal Strength Indicator (MS Thesis with Source Codes)

Abstract

Wireless Sensor Networks (WSN), as part of many critical real-life applications, are growing rapidly. The localization problem in WSN is a demanding and one of the most difficult elements of the technology. Many situations require efficient and accurate localization; nevertheless, there are certain cases in which location may be more important than others, such as military fields, fire detection in forests, and other similar scenarios. Accurate node location estimation, often known as localization, is a crucial task in WSN settings. Localization can be achieved using beacon nodes or sometimes called anchor nodes that have an inbuilt Global Positioning System (GPS). Despite the fact that a variety of alternative localization techniques are proposed by various authors, the trade-off between computational efficiency and localization accuracy makes it a difficult task to properly accomplish the task. It is easy to distort localization algorithms simply by adding wrong locations during the development process. In this synopsis a blockchain based hybrid localization technique using Distance Vector Hop (DV-Hop) and Received Signal Strength Indicator (RSSI) is proposed to perform accurate localization. Moreover, a trust management system to evaluate beacon nodes based on their trust values is used. The neighbour nodes list is used to prevent malicious nodes from broadcasting wrong location information. In the proposed scheme, first the neighbour nodes list information is collected for the unknown nodes that is stored in beacon nodes. Base station calculates the trust values of beacon nodes. The trust values are stored in beacon nodes using blockchain’s distributed ledger. Finally, we estimate ordinary nodes’ location based on RSSI, hop count and the average distance between the beacon nodes.