A Notification Transmission Mechanism for Sensor Nodes Based on Sensing Contents in IoTs

Abstract The IoTs deployment is mainly used to monitor a variety of sensing contents. Meanwhile, management centers (MCs) often send notifications to nodes satisfying given content ranges to implement specific actions. At present, the transmission of notification messages fulfills routing mostly based on node identification, which is isolated from sensing contents and has low efficiency. In this paper, we generalize two types of sensing contents: the continuous value and the discrete value, and a notification transmission mechanism based on sensing content (NSEC) is proposed for tree-like topologies in IoTs. Thus, the highly effective notifying method for content-based multicast and anycast messages is designed, which accurately sends messages to nodes meeting corresponding conditions. NSEC reduces transmission time, bandwidth and number of processing nodes when a content-based message is sent.