A new paradigm for urban surveillance with vehicular sensor networks

  • Authors:

  • Xu Li;Hongyu Huang;Xuegang Yu;Wei Shu;Minglu Li;Min-You Wu

  • Affiliations:

  • Department of Computer Science and Engineering, State University of New York at Buffalo, Buffalo, USA;High Performance Networking Research Center, Chongqing University, Chongqing, China;College of Computer Science and Technology, Jilin University, China;Department of Electrical and Computer Engineering, The University of New Mexico, NM, USA;Department of Computer Science and Engineering, Shanghai Jiao Tong University, Shanghai, China;Department of Computer Science and Engineering, Shanghai Jiao Tong University, Shanghai, China

  • Venue:
  • Computer Communications
  • Year:
  • 2011

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Abstract

We consider a new application paradigm of vehicular sensor networks (VSN). Currently, vehicles are equipped with forward facing cameras to assist forensic investigations of events by proactive image-capturing from streets and roads. Due to content redundancy and storage imbalance in this in-network distributed storage system, how to maximize its storage capacity becomes a nontrivial challenge. In other words, how to maximize the average lifetime of sensory data (i.e., images generated by cameras) in the network is a fundamental problem to be solved. This paper presents, VStore, a cooperative storage solution in vehicular sensor networks for mobile surveillance, which has been designed to support redundancy elimination and storage balancing throughout the network. Compared with existing works, we propose a novel storage architecture for urban surveillance and deal with challenges in a mobile scenario. Field testing was carried out with a trace-driven simulator, which utilized about 500 taxis in Shanghai. The testing results showed that VStore can largely prolong the average lifetime of sensory data by cooperative storage.