Integrated Design of Event Stream Service System Architecture (ESSSA)

This paper proposes the integrated design of an event stream service system architecture (ESSSA) which can be used as a gateway to capture and process enormous amounts of event streams continuously generated by radio frequency identification (RFID) or variable sensors over ubiquitous sensor network (USN) installed in a wide variety of locations, transfer the refined events to the various event-driven applications connected to this architecture, and allow the corresponding actions to be taken by the applications. The events continuously delivered from versatile origins and their streams are inherently uncertain, unbounded, and time-varying. Their arrival rate might severely fluctuate in some cases. Accordingly, this design focuses on the elaborate handling of the event streams by facilitating robust event gathering scheme as a front-end gateway in combination with a back-end event processing engine. The paper also contains the time-varying event query processing schemes of the ESSSA by extending the object-relational spatial database management system, ZEUS. The ESSSA can be applied as a framework for interfacing RFID or USN sensor based applications such as an enterprise resource planning system (ERP), a supply chain management system (SCM), a warehouse management system (WMS), or a centralized command and control system.