Date Added: May 2009
RFID of the wire frequency receives the most attention as main technology for making ubiquitous computing. The first RFID development concentrated on the tags attached on the something and recognizing automatically the wire frequency in hardware. But, latest, It has increased to concern about the middleware which perform the collect, filtering, and management and the support for integrating the RFID system. The existing middleware have a restriction not to support the new EPC data format which made for the special circumstance in the industry. So, ALE Manager in this paper observes the ALE standard of EPCglobal and support the passive tags and active sensor tags at the same time by expanding the architecture.