RESTORE: A Real-Time Event Correlation and Storage Service for Sensor Networks

This paper describes the design of RESTORE, which is a framework for providing in-network event correlation and storage service for sensor environments. RESTORE uses a data-centric approach in which it partitions a sensor network into zones and maps every event to a zone. The sensor nodes in a zone make use of their cooperative storage resources and redundancy to improve information availability and energy efficiency. RESTORE is useful for temporarily buffering information in sensor environments that have intermittent connectivity to a base station. RESTORE may also be used as the underlying framework for an event notification service that publishes events directly from a sensor network to the subscribers. The contributions of this paper include a) an event taxonomy for correlating sensor events within the network, and b) mechanisms to organize information using the collaborative resources, in order to enable real-time event correlation within a sensor network. We also present preliminary simulation results that examine how the collaboration within a zone in RESTORE impacts the energy consumption, information availability, and message overhead.

[1]  Gang Zhou,et al.  Impact of radio irregularity on wireless sensor networks , 2004, MobiSys '04.

[2]  Deborah Estrin,et al.  An evaluation of multi-resolution storage for sensor networks , 2003, SenSys '03.

[3]  Kevin R. Fall,et al.  A delay-tolerant network architecture for challenged internets , 2003, SIGCOMM '03.

[4]  John Anderson,et al.  Wireless sensor networks for habitat monitoring , 2002, WSNA '02.

[5]  Yong Wang,et al.  Energy-efficient computing for wildlife tracking: design tradeoffs and early experiences with ZebraNet , 2002, ASPLOS X.

[6]  Robert Tappan Morris,et al.  Span: An Energy-Efficient Coordination Algorithm for Topology Maintenance in Ad Hoc Wireless Networks , 2001, MobiCom '01.

[7]  Nael B. Abu-Ghazaleh,et al.  Collaborative storage management in sensor networks , 2004, Int. J. Ad Hoc Ubiquitous Comput..

[8]  Robert Tappan Morris,et al.  Span: An Energy-Efficient Coordination Algorithm for Topology Maintenance in Ad Hoc Wireless Networks , 2002, Wirel. Networks.

[9]  Deborah Estrin,et al.  Habitat monitoring: application driver for wireless communications technology , 2001, SIGCOMM LA '01.

[10]  Jerry Zhao,et al.  Habitat monitoring: application driver for wireless communications technology , 2001, CCRV.

[11]  Deborah Estrin,et al.  Data-Centric Storage in Sensornets with GHT, a Geographic Hash Table , 2003, Mob. Networks Appl..

[12]  T. Luckenbach,et al.  TinyREST – a Protocol for Integrating Sensor Networks into the Internet , 2005 .

[13]  Jerome P. Lynch,et al.  Two-tiered wireless sensor network architecture for structural health monitoring , 2003, SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.