標題: A Road-based QoS-aware Multipath Routing for Urban Vehicular Ad Hoc Networks
作者: Hsieh, Yi-Ling
Wang, Kuochen
資訊工程學系
Department of Computer Science
關鍵字: multipath;QoS;road-based;routing;VANET
公開日期: 2012
摘要: Stable and efficient routing plays a key role for the success of VANETs. Road-based routing has been shown well-suited for urban VANETs, and multipath routing provides alternative routes once the current route fails. However, existing multipath routing protocols are node-based, which are not suitable for urban VANETs. In this paper, we propose a road-based QoS-aware multipath routing protocol for urban VANETs (RMRV). The proposed RMRV can find multiple paths and intelligently utilize them. We also propose a space-time planar graph approach to predict the connectivity of each road section (RS) in a path, and then derive the path's future lifetime and life periods. In this way, the source node may dynamically switch to use a path with the longest lifetime. The life periods of a path can further be utilized to estimate the packet delay for QoS routing. Simulation results show that comparing to RBVT-R, which is a single-path road-based routing protocol, the packet delivery ratio of the proposed RMRV (only one path used at a time) is 12.2% higher than that of RBVT-R, and the average end-to-end delay of RMRV is 11.5% lower than that of RBVT-R, on average. To the best of our knowledge, there is no existing road-based multipath routing protocol for VANETs.
URI: http://hdl.handle.net/11536/22872
ISBN: 978-1-4673-0921-9
ISSN: 1930-529X
期刊: 2012 IEEE GLOBAL COMMUNICATIONS CONFERENCE (GLOBECOM)
起始頁: 189
結束頁: 194
顯示於類別:會議論文