Energy-Efficient Duty Cycle Assignment for Receiver-Based Convergecast in Wireless Sensor Networks

Duty cycling is often used to reduce the energy consumption caused by idle listening in Wireless Sensor Networks (WSNs). Most studies on WSN protocols define a common duty cycle value throughout the network to achieve synchronization among the nodes. On the other hand, a few studies propose adaptation of the duty cycle according to uniform traffic conditions, which is beneficial assuming one-to-one traffic patterns that result in evenly distributed packet traffic. In this work, we consider the convergecast communication pattern commonly observed in WSNs. In convergecast communication, the packet traffic observed around the sink node is much higher than the traffic observed far from the sink, i.e., nodes with different distances to the sink node receive and must relay different amounts of traffic. Additionally, we utilize receiver-based protocols, which enable nodes to communicate with no synchronization or neighbor information, and hence do not require all nodes in the network to have ...

• Type: Journal
• Year: 2010
• Where: GLOBECOM
• Authors: Yuqun Zhang, Chen-Hsiang Feng, Ilker Demirkol, Wendi Rabiner Heinzelman
• Keywords: Communications, Duty Cycle, Energy Consumption, GLOBECOM 2010, Sink Node