Abstract. Location-Based Service (LBS) provides precious information to users based on the user's current location or the location designated by the user. Typical examples of LBS include vehicle navigation services, bus information services, fleet management services, and so on. As manmade structures are getting bigger and bigger, demand for indoor location based services (ILBS) has also been rapidly increased. It is well-known that frameworks make development of ILBS systems easier and more efficient. This paper introduces our design of a framework for ILBS systems.