Improved AODV Routing Protocol Based on Link Stability and Channel Switching

• Published in: 东华大学学报（英文版） Vol. 31; no. 2; pp. 133 - 136
• Main Author: 孙文慧 李德敏 张晓露 孙智乐
• Format: Journal Article
• Language: English
• Published: School of Information Science & Technology, Donghua University, Shanghai 201620, China 2014
• Subjects: channel switching; link stability; cross-layer ad hoc ondemand distance vector (CL_AODV)
• ISSN: 1672-5220

Ad hoc on-demand distance vector （AODV） routing is one of the typical reactive routing protocols of vehicular ad hoc networks （V ANET ）. Considering link stability and channel switching can greatly improve the QoS of protocols, in this paper, we propose a novel routing protocol： optimized cross-layer AODV （CL _ AODV） designed for V ANET. It utilizes the frame transmission efficiency （FIE）, path bandwidth in media access control （MAC） layer and signal-to-noise ratio （SNIR） in physical （PHY） layer to improve the link stability. In other words, it can increase packet delivery ratio effectively. In addition, end-to-end delay will be decreased based on the channel switching. According to the simulation, it is shown that the packet delivery ratio of CL_AODV is almost up to 99% and the highest compared to AODV and muti-constrained QoS AODV （MQ _ AODV）. The delay of CL_ AODV is almost half of MQ_AODV＇s and 1/3 of AODV＇s. Meanwhile, CL_AODV has the highest routing overhead or energy consuming. Because of the feature of V ANET, the disadvantage can be ignored.