POS - the Mote Indoor Positioning System ∗

In the past few years, there have been huge research efforts into ubiquitous and context aware platforms that offer a user a custom level of service based on some known local parameters. The utility of such systems is greatly enhanced if a physical locational area can be determined. Recently, hybrid devices have been developed combining low power microcontrollers with short range FM radio transceivers. Some location identification work has been carried out with these systems such as the Matrix Pencil approximation technique[8], however most of these all provide information for an ideal square area with no RF obstructions. Here we present MiPOS, a scalable locationing system based on the MICA mote[11] family of devices. The design goal of MiPOS is to provide a low-power, scalable, distributed locationing system suited to an indoor (office) environment. During the presentation of this paper we will highlight solutions in the areas of security, radio and network management and power awareness for a hybrid context aware wearable locationing device.