Date Added: Nov 2012
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, the authors propose a road-based QoS-aware multipath routing protocol for urban VANETs (RMRV). The proposed RMRV can find multiple paths and intelligently utilize them. They 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.