标题: | Design and Evaluation of a Two-Tier Peer-to-Peer Traffic Information System |
作者: | Tsao, Shiao-Li Cheng, Chien-Ming 资讯工程学系 Department of Computer Science |
公开日期: | 1-五月-2011 |
摘要: | Decentralized traffic information systems realize real-time traffic information services without the need for a server infrastructure. However, existing systems rely on either the vehicular ad hoc network or application-layer peer-to-peer protocols over a broadband wireless network suffering from low lookup success rate, high lookup latency, and maintenance overhead of the P2P network. This article proposes a two-tier VANET/P2P architecture that exploits both VANET and P2P technology. In the low tier, vehicles form a VANET via intervehicle communication to exchange traffic information. On top of the VANET, a portion of the vehicles further establish a P2P overlay through a broadband wireless infrastructure to mitigate the disconnectivity problems of the VANET. Simulation results demonstrate that the two-tier architecture can significantly improve the lookup success rate compared to the single-tier VANET systems while reducing lookup latency and maintenance overhead compared to the single-tier P2P systems. |
URI: | http://dx.doi.org/10.1109/MCOM.2011.5762814 http://hdl.handle.net/11536/8931 |
ISSN: | 0163-6804 |
DOI: | 10.1109/MCOM.2011.5762814 |
期刊: | IEEE COMMUNICATIONS MAGAZINE |
Volume: | 49 |
Issue: | 5 |
起始页: | 165 |
结束页: | 172 |
显示于类别: | Articles |
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