Next century challenges: scalable coordination in sensor networks
MobiCom '99 Proceedings of the 5th annual ACM/IEEE international conference on Mobile computing and networking
Wireless integrated network sensors
Communications of the ACM
GPSR: greedy perimeter stateless routing for wireless networks
MobiCom '00 Proceedings of the 6th annual international conference on Mobile computing and networking
Dynamic fine-grained localization in Ad-Hoc networks of sensors
Proceedings of the 7th annual international conference on Mobile computing and networking
Highly-resilient, energy-efficient multipath routing in wireless sensor networks
ACM SIGMOBILE Mobile Computing and Communications Review
Wireless sensor networks: a survey
Computer Networks: The International Journal of Computer and Telecommunications Networking
RAP: A Real-Time Communication Architecture for Large-Scale Wireless Sensor Networks
RTAS '02 Proceedings of the Eighth IEEE Real-Time and Embedded Technology and Applications Symposium (RTAS'02)
SPEED: A Stateless Protocol for Real-Time Communication in Sensor Networks
ICDCS '03 Proceedings of the 23rd International Conference on Distributed Computing Systems
Range-free localization schemes for large scale sensor networks
Proceedings of the 9th annual international conference on Mobile computing and networking
DSN '04 Proceedings of the 2004 International Conference on Dependable Systems and Networks
Failure Data Analysis of a Large-Scale Heterogeneous Server Environment
DSN '04 Proceedings of the 2004 International Conference on Dependable Systems and Networks
Fault Tolerant Energy Aware Data Dissemination Protocol in Sensor Networks
DSN '04 Proceedings of the 2004 International Conference on Dependable Systems and Networks
Localization for mobile sensor networks
Proceedings of the 10th annual international conference on Mobile computing and networking
A Minimum Cost Heterogeneous Sensor Network with a Lifetime Constraint
IEEE Transactions on Mobile Computing
A distributed coordination framework for wireless sensor and actor networks
Proceedings of the 6th ACM international symposium on Mobile ad hoc networking and computing
A Framework for Node-Level Fault Tolerance in Distributed Real-Time Systems
DSN '05 Proceedings of the 2005 International Conference on Dependable Systems and Networks
Using redundancy to cope with failures in a delay tolerant network
Proceedings of the 2005 conference on Applications, technologies, architectures, and protocols for computer communications
Packet combining in sensor networks
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Reliable Packet Transmissions in Multipath Routed Wireless Networks
IEEE Transactions on Mobile Computing
IEEE Transactions on Mobile Computing
Localization in sparse networks using sweeps
Proceedings of the 12th annual international conference on Mobile computing and networking
On delivery guarantees of face and combined greedy-face routing in ad hoc and sensor networks
Proceedings of the 12th annual international conference on Mobile computing and networking
Energy efficient routing with delay guarantee for sensor networks
Wireless Networks
Fault tolerant multiple event detection in a wireless sensor network
Journal of Parallel and Distributed Computing
Mobicast: just-in-time multicast for sensor networks under spatiotemporal constraints
IPSN'03 Proceedings of the 2nd international conference on Information processing in sensor networks
CEDAR: a core-extraction distributed ad hoc routing algorithm
IEEE Journal on Selected Areas in Communications
Distributed quality-of-service routing in ad hoc networks
IEEE Journal on Selected Areas in Communications
Journal of Network and Computer Applications
Coordination in wireless sensor-actuator networks: A survey
Journal of Parallel and Distributed Computing
Performance evaluation of wireless sensor networks in realistic wildfire simulation scenarios
Proceedings of the 16th ACM international conference on Modeling, analysis & simulation of wireless and mobile systems
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Wireless sensor-actuator networks (WSANs) greatly enhance the existing wireless sensor network architecture by introducing powerful and possibly even mobile actuators. The actuators work with the sensor nodes, but can perform much richer application-specific actions. To act responsively and accurately, an efficient and reliable reporting scheme is crucial for the sensors to inform the actuators about the environmental events. Unfortunately, the low-power multi-hop communications in a WSAN are inherently unreliable; frequent sensor failures and excessive delays due to congestion or in-network data aggregation further aggravate the problem. In this paper, we propose a general reliability-centric framework for event reporting in WSANs. We argue that the reliability in such a real-time system depends not only on the accuracy, but also the importance and freshness of the reported data. Our design follows this argument and seamlessly integrates three key modules that process the event data, namely, an efficient and fault-tolerant event data aggregation algorithm, a delay-aware data transmission protocol, and an adaptive actuator allocation algorithm for unevenly distributed events. Our transmission protocol adopts smart priority scheduling that differentiates event data of non-uniform importance. We further extend the protocol to handle node and link failures using an adaptive replication algorithm. We evaluate our framework through extensive simulations; the results demonstrate that it achieves desirable reliability with minimized delay.