Adaptive hybrid clock discipline algorithm for the network time protocol
IEEE/ACM Transactions on Networking (TON)
Timing-sync protocol for sensor networks
Proceedings of the 1st international conference on Embedded networked sensor systems
An adaptive energy-efficient MAC protocol for wireless sensor networks
Proceedings of the 1st international conference on Embedded networked sensor systems
Sensor network-based countersniper system
SenSys '04 Proceedings of the 2nd international conference on Embedded networked sensor systems
The flooding time synchronization protocol
SenSys '04 Proceedings of the 2nd international conference on Embedded networked sensor systems
Versatile low power media access for wireless sensor networks
SenSys '04 Proceedings of the 2nd international conference on Embedded networked sensor systems
Fine-grained network time synchronization using reference broadcasts
OSDI '02 Proceedings of the 5th symposium on Operating systems design and implementationCopyright restrictions prevent ACM from being able to make the PDFs for this conference available for downloading
Ultra-low duty cycle MAC with scheduled channel polling
Proceedings of the 4th international conference on Embedded networked sensor systems
Lowering radio duty cycle through temperature compensated timing
Proceedings of the 4th international conference on Embedded networked sensor systems
SenQ: a scalable simulation and emulation environment for sensor networks
Proceedings of the 6th international conference on Information processing in sensor networks
Movement Analysis in Rock-Climbers
Proceedings of the 6th international conference on Information processing in sensor networks
Secure, accurate and precise time synchronization for wireless sensor networks
Proceedings of the 3rd ACM workshop on QoS and security for wireless and mobile networks
Temporal Predicate Detection Using Synchronized Clocks
IEEE Transactions on Computers
HERMES: A Software Architecture for Visibility and Control in Wireless Sensor Network Deployments
IPSN '08 Proceedings of the 7th international conference on Information processing in sensor networks
SIGMETRICS '08 Proceedings of the 2008 ACM SIGMETRICS international conference on Measurement and modeling of computer systems
Secure Time Synchronization in Sensor Networks
ACM Transactions on Information and System Security (TISSEC)
Wireless sensor network survey
Computer Networks: The International Journal of Computer and Telecommunications Networking
PRESTO: feedback-driven data management in sensor networks
IEEE/ACM Transactions on Networking (TON)
Event-driven adaptive duty-cycling in sensor networks
International Journal of Sensor Networks
Optimal sleep/wake scheduling for time-synchronized sensor networks with QoS guarantees
IEEE/ACM Transactions on Networking (TON)
A multifrequency MAC specially designed for wireless sensor network applications
ACM Transactions on Embedded Computing Systems (TECS)
Early overhearing avoidance in wireless sensor networks
NETWORKING'08 Proceedings of the 7th international IFIP-TC6 networking conference on AdHoc and sensor networks, wireless networks, next generation internet
On the interaction of clocks, power, and synchronization in duty-cycled embedded sensor nodes
ACM Transactions on Sensor Networks (TOSN)
Adaptive time synchronization for wireless sensor networks with self-calibration
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
A robust approach for clock offset estimation in wireless sensor networks
EURASIP Journal on Advances in Signal Processing
EM-MAC: a dynamic multichannel energy-efficient MAC protocol for wireless sensor networks
MobiHoc '11 Proceedings of the Twelfth ACM International Symposium on Mobile Ad Hoc Networking and Computing
On the scalability of routing integrated time synchronization
EWSN'06 Proceedings of the Third European conference on Wireless Sensor Networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
Modeling energy harvesting sensors using accelerometer in body sensor networks
BodyNets '13 Proceedings of the 8th International Conference on Body Area Networks
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Radio duty cycling has received significant attention in sensor networking literature, particularly in the form of protocols for medium access control and topology management. While many protocols have claimed to achieve significant duty-cycling benefits in theory and simulation, these benefits have often not translated to practice. The dominant factor that prevents the optimal usage of the radio in real deployment settings is time uncertainty between sensor nodes. This paper proposes an uncertainty-driven approach to duty-cycling where a model of long-term clock drift is used to minimize the duty-cycling overhead. First, we use long-term empirical measurements to evaluate and analyze in-depth the interplay between three key parameters that influence long-term synchronization - synchronization rate, history of past synchronization beacons and the estimation scheme. Second, we use this measurement-based study to design a rate-adaptive, energy-efficient long-term time synchronization algorithm that can adapt to changing clock drift and environmental conditions while achieving application-specific precision with very high probability. Finally, we integrate our uncertainty-driven time synchronization scheme with a MAC layer protocol, BMAC, and empirically demonstrate one to two orders of magnitude reduction in the transmit energy consumption at a node with negligible impact on the packet loss rate.