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 |