Enabling low-power localization for mobile sensor nodes

One of the most challenging issues in the design of localization system is to maximize the battery lifetime of the mobile nodes as much as possible. Several localization algorithms exploit the received signal strength indicator (RSSI) for determining the position. In this paper the RSSI samples acquisition is investigated from an energetic point of view. For enabling energy efficient localization two novel protocols are proposed: Low Power Localization (LPL) and Optimized Listening Period (OLP). A non-beacon enabled IEEE 802.15.4 sensor network was built in order to take real measurements and allow a comparison.