Event Based Localization using Enhanced Multi Sequence Positioning in Wireless Sensor Networks

Localization of sensor nodes and objects is an important component of many protocols and applications in Wireless Sensor Networks (WSNs). The process of localization is not only computationally expensive but it also involves an added overhead on various protocols. As a result, it affects energy consumption. In this paper, we cover extensively the Multi-Sequence Positioning (MSP) event based localization approach. The MSP is utilized for massive number of outdoor stationary nodes. The core functionality is ensured by the formation of a one-dimensional node sequence, acquired from engineered events which are distributed throughout the network. These sequences are aligned to form a two-dimensional grid and nodes are assigned to each formed region in the grid. We develop an indigenous implementation of the technique using simulation based approaches and perform thorough tests in terms of node distribution, anchor positions, anchor quantity, event distribution, and number of events.