Subscribing and Matching RFID-Related Events

Publish/subscribe service can deliver customized events and increase product visibility for users in RFID applications such as logistics supporting systems. This paper herein presents a composite subscription specification for RFID- related application scenarios, permitting to subscribe predicates for RFID-codes as well as temporal events. Moreover, an effective matching algorithm for RFID-code subscriptions together with a corresponding algorithm for detecting complex events is proposed. Finally, experiments are conducted to quantify the performances and costs of the above algorithms.