Considerations for RFID-Based Indoor Simultaneous Tracking
IFIP Advances in Information and Communication Technology
Context-aware applications is not just a vision. Advances in wireless communications and mobile capabilities have revolutionized the way services are brought to users, i.e. adapted to their context. Location is a key attribute of the term context and thus, an accurate location determination system is of paramount importance. RFID (Radio Frequency IDentification) is an emerging technology and recently has been explored for its applicability in location sensing systems. In this paper, we focus on
... an RFID-based localization approach in an indoor multi-user environment and model its most adverse implicating factors, that is collisions among its main components and interference from indoor characteristics. Extensive simulations are conducted to characterize and evaluate the performance behavior of the proposed scheme in environments with different levels of severity. The proliferation of wireless technologies, mobile computing and Internet has spurred the development of innovative context-aware services, with location being a crucial attribute of the general term context. Additionally, network functionalities such as mobility management, network planning, load planning etc, can be improved if location information is available. However, for accomplishing these visions, a location determination system which provides an accurate, reliable and fast estimation of users or devices position is required. WLAN-based indoor location systems have attracted the interest of the research and industry communities. The main benefits of such systems is their low cost and ease of deployment since they rely on the existing WLAN infrastructure. Moreover, the number of WiFi-enabled devices is rapidly increasing in the markets. However, the achieved accuracy is limited. RFID is a rapidly developing short range technology which uses wireless communication for automatic identification of objects. An RFID system consists of two main components, the tag and the reader. The RFID reader can read data emitted from the RFID tags within its reading range by using a defined Radio Frequency (RF) and protocol. The RFID tags can be either passive or active. ⋆ This paper is conducted in the French national research project ANR 2006 SUN: Situated and Ubiquitous Networks.