Complex Event Processing in RFID Middleware: A Three Layer Perspective

In this paper, we introduce a mechanism of using complex event processing technology to process high level business logic of RFID application. Based on our RFID middleware prototype PKU RFID edge server (PRES), we present a three-layer perspective for complex event processing in RFID middleware according to principle of "Separation of Concerns". We propose Petri net based models for each layer: logic structure, temporal constraint and event detection. Event operators are reconsidered based on net structure and given a universal definition, which server as a solid guidance for implementation of complex event processing engine in RFID middleware.