We are developing a sensor localization system using WiFi APs anchors.
Our localization system uses different beacon intervals with
constraints on WiFi APs to identify sender APs, which restricts the
number of APs resulting in limited target area. To tackle this
problem, we propose a coarse sensor localization system that can be
combined with our previous sensor localization system. Our key idea
here is to build groups such that combination of beacon intervals is
unique. The combination is used as an ID to identify coarse location.
We present the design of our coarse sensor localization system.