科研成果详情

Consolidated and ubiquitous travel information availability is key to intelligent transport system (ITS). However, it is expensive for fixed infrastructure based wireless network to provide total coverage and offer ubiquitous communication capacity. RFID enabled Vehicular Ad hoc Network (VANET) emerges as an alternative which can leverage mobile nodes to bridge the gap between information isolated islands often existing in mobile and wireless networks. The low duty cycle activity of nodes and links in VANET may destroy the connectivity of the VANET network. This paper proposes Ubiquitous Query for Travel Information (UQTI) in Intelligent Transportation System over Mobile Relay Network (MRN) to facilitate the needed information access for drivers on the road. The ubiquitous service is introduced and the performance of the successful information query is evaluated based on the computing model and network simulation. The results of evaluation and the real experience of the UQTI service validate the feasibility of the MRN based network communication. © 2011 IEEE.