A NEW PEER-TO-PEER-BASED INTEROPERABLE SPATIAL SENSOR WEB ARCHITECTURE
Shixin Liang · 2008
With the rapid advances in sensor network, and information and communication technologies, the vision of a World-Wide Sensor Web (WSW) is becoming a reality. However, there is a lack of a spatial information infrastructure that could aggregate the independent geo-sensor networks into a coherent Spatial Sensor Web (SSW). The SSW vision brings two architectural challenges to today’s GIService systems: (1) scalability and (2) interoperability. This paper introduces GeoSWIFT 2.0, a new scalable and interoperable SSW architecture. GeoSWIFT 2.0 is scalable – it removes all single points of failure and system performance bottlenecks by using a fully decentralized P2P spatial query framework. GeoSWIFT 2.0 is also interoperable – it integrates interoperable sensor web standards with the scalable P2P framework. 1. BACKGROUND Distributed sensor networks are attracting more and more interest in applications for large-scale monitoring of the environment, civil structures, roadways, animal habitats, etc. With the rapidly increasing number of large-scale sensor network deployments, the vision of a World-Wide Sensor Web (WSW) is becoming a reality. Similar to the World-Wide Web (WWW), which acts essentially as a “World-Wide Computer”,