Using Tuple-Spaces to manage the Storage and Dissemination of Spatial-temporal Content

Abstract

Structured, spatial-temporal content arises in application areas such as mobile computing, intelligent transportation and urban mobility, and ubiquitous sensing. For the distributed storage and dissemination of such content, peer to peer solutions appear to be the natural choice. However, a closer analysis shows that distributed hash tables (DHT) alone are not enough: firstly, they do not maintain the original structure to efficiently access the comprising attributes, and secondly, they lead to high signaling traffic when handling short lived data, which is characteristic for high mobility scenarios. In order to address these two problems we propose a novel content dissemination architecture based on an overlay of space-based containers. In this paper we also show how we apply the proposed concept to realize a concrete application in the field of intelligent transportation, and present the results of the performance evaluation conducted in the system prototype.