Towards a new range-based localization method for WSNs: Challenges, Constraints and Correction

Applying Localization methods to a Wireless Sensor Network (WSN) is not simply a matter of proposing an algorithm. Several aspects must be taken into account as they influence the performance of both the localization service and the network. Network lifetime and medium availability are key resources that the localization service should not monopolize: the proposed protocol must be designed in order to minimize localization overhead or at least ensure fairness of access between localization and the other applications. On the other hand, hardware platform characteristics have a direct impact on the precision of the results. In this article, we first review these aspects then, as we present our framework for a distributed localization method, we introduce our proposition of an efficient correction method that can be implemented on nodes with limited resources. Results obtained using this correction are also briefly introduced.