Vibration-to-electric energy conversion
IEEE Transactions on Very Large Scale Integration (VLSI) Systems - Special issue on low power electronics and design
Application-specific protocol architectures for wireless networks
Application-specific protocol architectures for wireless networks
A message ferrying approach for data delivery in sparse mobile ad hoc networks
Proceedings of the 5th ACM international symposium on Mobile ad hoc networking and computing
Routing in a delay tolerant network
Proceedings of the 2004 conference on Applications, technologies, architectures, and protocols for computer communications
Maximum lifetime routing in wireless sensor networks
IEEE/ACM Transactions on Networking (TON)
Proceedings of the 2005 joint conference on Smart objects and ambient intelligence: innovative context-aware services: usages and technologies
Maximizing the functional lifetime of sensor networks
IPSN '05 Proceedings of the 4th international symposium on Information processing in sensor networks
Perpetual environmentally powered sensor networks
IPSN '05 Proceedings of the 4th international symposium on Information processing in sensor networks
Power management in energy harvesting sensor networks
ACM Transactions on Embedded Computing Systems (TECS) - Special Section LCTES'05
Rate allocation and network lifetime problems for wireless sensor networks
IEEE/ACM Transactions on Networking (TON)
On the lifetime of wireless sensor networks
ACM Transactions on Sensor Networks (TOSN)
Extending the lifetime of wireless sensor networks through mobile relays
IEEE/ACM Transactions on Networking (TON)
How Wireless Power Charging Technology Affects Sensor Network Deployment and Routing
ICDCS '10 Proceedings of the 2010 IEEE 30th International Conference on Distributed Computing Systems
Prolonging Sensor Network Lifetime Through Wireless Charging
RTSS '10 Proceedings of the 2010 31st IEEE Real-Time Systems Symposium
J-RoC: A Joint Routing and Charging scheme to prolong sensor network lifetime
ICNP '11 Proceedings of the 2011 19th IEEE International Conference on Network Protocols
Light-weight Online Predictive Data Aggregation for Wireless Sensor Networks
Proceedings of Workshop on Machine Learning for Sensory Data Analysis
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Wireless sensor networks are constrained by limited battery energy. Thus, finite network lifetime is widely regarded as a fundamental performance bottleneck. Recent breakthrough in the area of wireless power transfer offers the potential of removing this performance bottleneck, i.e., allowing a sensor network to remain operational forever. In this paper, we investigate the operation of a sensor network under this new enabling energy transfer technology. We consider the scenario of a mobile charging vehicle periodically traveling inside the sensor network and charging each sensor node's battery wirelessly. We introduce the concept of renewable energy cycle and offer both necessary and sufficient conditions. We study an optimization problem, with the objective of maximizing the ratio of the wireless charging vehicle (WCV)'s vacation time over the cycle time. For this problem, we prove that the optimal traveling path for the WCV is the shortestHamiltonian cycle and provide a number of important properties. Subsequently, we develop a near-optimal solution by a piecewise linear approximation technique and prove its performance guarantee.