RFID Complex Event Detecting Based On Rete Algorithm

Radio Frequency Identification (RFID) plays an essential role in today's internet technology, and attracts a lot of market interests. The RFID system with the middleware, network technology and database technology forms "the wisdom-world", which is constructed by lots of mobile tags and readers.However, there are still some challenges in RFID during its rapid development. Note that there are more and more amount of information in the internet, which will exceed the processing ability of nowadays'processor. To process information in a more efficient way becomes the urgent need in practice. So how to improve the processing capability of RFID in practice becomes one of the most important technologies.In this article, we mainly aim at the studying of RFID complex event processing. It is known that the Rete algorithm, which is usually used in production systems, has good performance in processing a large number of rules and facts. In this article,we introduce the Rete algorithm to the RFID complex event processing, and extend it so that the disadvantage that it can not support time operations can overcome. By introducing the improved Rete algorithm, we share the intermediate results, and reduce the amount of repeated matching, we also add the callback garbage collection mechanism, to remove the useless data. Finally,by adding the OME, we avoid accidental deletion and pseudo-real event, which always exist in the RFID.