A Positioning Handoff Decision Algorithm for Ubiquitous Pedestrian Navigation Systems

Nowadays, with the widespread deployment of smartphones the major challenge is to provide ubiquitous services, in particular, the pedestrian navigation service that rely greatly on both the positioning technology (e.g., WiFi, Bluetooth, etc.) and the positioning technique. In this paper, we propose a positioning handoff decision algorithm based on service parameters and user requirements to ensure a seamless and continuous switch process between heterogeneous available positioning technologies. The proposed algorithm starts by identifying the key parameters acting on the selection procedure, then, computes criteria weights by applying the fuzzy analytic hierarchy process -- AHP and finally, conducts to the best suitable positioning technology using a specific ranking function that always prefers the most accurate positioning technique. We end this paper by comparing our proposal with two different multicriteria decision making -- MCDM methods: the technique for order preference by similarity to the ideal solution -- TOPSIS and the simple additive weighting -- SAW approach.