Wireless integrated network sensors
Communications of the ACM
The cougar approach to in-network query processing in sensor networks
ACM SIGMOD Record
Energy-Efficient Communication Protocol for Wireless Microsensor Networks
HICSS '00 Proceedings of the 33rd Hawaii International Conference on System Sciences-Volume 8 - Volume 8
Supporting Aggregate Queries Over Ad-Hoc Wireless Sensor Networks
WMCSA '02 Proceedings of the Fourth IEEE Workshop on Mobile Computing Systems and Applications
ICDE '00 Proceedings of the 16th International Conference on Data Engineering
Hood: a neighborhood abstraction for sensor networks
Proceedings of the 2nd international conference on Mobile systems, applications, and services
Consensus: A System Study of Monitoring Applications for Wireless Sensor Networks
LCN '04 Proceedings of the 29th Annual IEEE International Conference on Local Computer Networks
TinyDB: an acquisitional query processing system for sensor networks
ACM Transactions on Database Systems (TODS) - Special Issue: SIGMOD/PODS 2003
ExScal: Elements of an Extreme Scale Wireless Sensor Network
RTCSA '05 Proceedings of the 11th IEEE International Conference on Embedded and Real-Time Computing Systems and Applications
Kairos: a macro-programming system for wireless sensor networks
Proceedings of the twentieth ACM symposium on Operating systems principles
Programming wireless sensor networks with logical neighborhoods
InterSense '06 Proceedings of the first international conference on Integrated internet ad hoc and sensor networks
The regiment macroprogramming system
Proceedings of the 6th international conference on Information processing in sensor networks
Programming sensor networks using abstract regions
NSDI'04 Proceedings of the 1st conference on Symposium on Networked Systems Design and Implementation - Volume 1
Beyond average: toward sophisticated sensing with queries
IPSN'03 Proceedings of the 2nd international conference on Information processing in sensor networks
Event detection services using data service middleware in distributed sensor networks
IPSN'03 Proceedings of the 2nd international conference on Information processing in sensor networks
Semantic streams: a framework for composable semantic interpretation of sensor data
EWSN'06 Proceedings of the Third European conference on Wireless Sensor Networks
Congestion control in wireless sensor networks based on bird flocking behavior
Computer Networks: The International Journal of Computer and Telecommunications Networking
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Greater availability and affordability of wireless technology has led to an increase in the number of wireless sensor network (WSN) applications where sense data is collected at a central user point, commonly outside the network (geographically and topologically) for processing. Resource constraints on nodes in the network coupled with considerable redundancy in the data generated mean that applications have to be developed with an eye to maximising energy efficiency in order to extend network life. In-network computation, and in particular in-network information extraction from data, has been promoted as a technique for achieving this aim. In-network processing, however, has been limited to systems where at most, simple aggregate queries are evaluated, the results of which are communicated to the outside world. There is currently little research into how the idea of in-network processing can be extended and implemented to allow more complex queries to be resolved within the network. This paper examines key applicative query-based approaches that utilise in-network processing for query resolution, identifies their strengths and limitations and puts forward ideas for facilitating in-network complex query processing in WSNs. Finally, preliminary results of experiments, where in-network attribute-based logical abstractions are used for processing complex queries, are presented.