Wakeup scheduling in wireless sensor networks

A large number of practical sensing and actuating applications require immediate notification of rare but urgent events and also fast delivery of time sensitive actuation commands. In this paper, we consider the design of efficient wakeup scheduling schemes for energy constrained sensor nodes that adhere to the bidirectional end-to-end delay constraints posed by such applications. We evaluate several existing scheduling schemes and propose novel scheduling methods that outperform existing ones. We also present a new family of wakeup methods, called multi-parent schemes, which take a cross-layer approach where multiple routes for transfer of messages and wakeup schedules for various nodes are crafted in synergy to increase longevity while reducing message delivery latencies. We analyze the power-delay and lifetime-latency tradeoffs for several wakeup methods and show that our proposed techniques significantly improve the performance and allow for much longer network lifetime while s...

• Type: Conference
• Year: 2006
• Where: MOBIHOC
• Authors: Abtin Keshavarzian, Huang Lee, Lakshmi Venkatraman
• Keywords: MOBIHOC 2006, Wakeup Methods, Wakeup Scheduling, Wakeup Scheduling Schemes, Wireless Networks