Spatiotemporal Delay Control for Low-Duty-Cycle Sensor Networks

—Data delivery is a major function of sensor network applications. Many applications, such as military surveillance, require the detection of interested events to be reported to a command center within a specified time frame, and therefore impose a real-time bound on communication delay. On the other hand, to conserve energy, one of the most effective approaches is to keep sensor nodes in the dormant state as long as possible while satisfying application requirements. Obviously a node can not communicate if it is not active. Therefore, to deliver data in a timely manner for such extremely low duty-cycle sensor networks, communication needs to be carefully managed among sensor nodes. In this work, we introduce three different approaches to provide real-time guarantee of communication delay. First, we present a method for increasing duty-cycle at individual node. Then we describe a scheme on placement of sink nodes. Based on previous two methods, we discuss a hybrid approach that show...

• Type: Conference
• Year: 2009
• Where: RTSS
• Authors: Yu Gu, Tian He, Mingen Lin, Jinhui Xu
• Keywords: Applied Computing, Communication Delay, RTSS 2009, Sensor Networks, Sensor Nodes