Temporal stability of RSSI as a pedestrian localization metric

ABSTRACTAs wireless sensor network (WSN) technology advances, more practical applications become possible. One important application involves mobility analytics. Data concerning how people move in urban environments can inform city planners and businesses to support improved decision-making. Numerous studies have been conducted on pedestrian localization using the received signal strength index (RSSI) of mobile device WiFi probe requests. However, these studies were only conducted over the span of days. Since a real-world WSN requires long-term, reliable accuracy, further experimentation is required to determine whether accuracy is maintained over time. We evaluate the long-term viability of RSSI as a localization metric through an analysis of experimental results using a robotic testbed platform.