Vehicular grid communications: the role of the internet infrastructure
WICON '06 Proceedings of the 2nd annual international workshop on Wireless internet
MobiSteer: using steerable beam directional antenna for vehicular network access
Proceedings of the 5th international conference on Mobile systems, applications and services
Movement-assisted sensor redeployment scheme for network lifetime increase
Proceedings of the 10th ACM Symposium on Modeling, analysis, and simulation of wireless and mobile systems
Sensor Deployment for Composite Event Detection in Mobile WSNs
WASA '08 Proceedings of the Third International Conference on Wireless Algorithms, Systems, and Applications
Improving network lifetime with mobile wireless sensor networks
Computer Communications
Delay-constrained energy-efficient routing in heterogeneous wireless sensor networks
International Journal of Sensor Networks
A new architecture for data collection in vehicular networks
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Vehicular networks and the future of the mobile internet
Computer Networks: The International Journal of Computer and Telecommunications Networking
Journal of Network and Computer Applications
Wireless Communications & Mobile Computing
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In this paper we study the use of vehicles as sensors in a "vehicular sensor network," a new network paradigm that is critical for gathering valuable information in urban environments. In a vehicular sensor network, each vehicle is responsible for sensing one or more events, routing messages to other vehicles or Infostations and processing sensed data. There are several critical differences between a vehicular sensor network and a "traditional" wireless sensor network, namely: 1) the vehicular network has high computation power; 2) it must provide high storage space; 3) it must have mobile sensor nodes. In addition, due to the sheer amount of data generated, sensed data is carried by each mobile sensor node. Admittedly, retrieving information from mobile sensor nodes is difficult. In this paper, we first identify a set of design choices for building a vehicular sensor network. From this we propose two storage architectures: Content-Addressed Storage (CAS) and Mobility-Assist Storage (MAS). While CAS utilizes Infostations by hashing the key of an event to a specific Infostation, MAS opportunistically disseminates events by "relaying" or sending events only to one's neighbors. CAS is appropriate for time-critical applications and MAS for delaytolerant applications only if infrastructure is not available. In this paper, we propose data harvesting protocols for CAS and MAS: Infostation-based and mobility-assist data harvesting protocols respectively.