A Real-Time Traffic-Aware Routing Strategy for Vehicular Ad-Hoc Networks

• Main Authors: Chih-kun Tai, 戴志坤
• Other Authors: Wei-Kuang Lai
• Format: Others
• Language: en_US
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/8b6p24

博士 === 國立中山大學 === 資訊工程學系研究所 === 104 === Since high mobility of vehicle and variable network topology are challenges in Vehicular Ad Hoc Networks (VANETs), routing protocols in Mobile Ad Hoc Network (MANET) are not suitable and need new strategy in VANETs. Geographic routing is beneficial to deal with these problems by collecting geographic information (such as vehicle’s position, velocity, direction, etc.) of vehicles to assist in establishing the stable routing paths. Therefore, in this dissertation we propose a Traffic-Aware routing strategy with Link Quality (TA-LQ) based on geographic routing protocol. The goal is to achieve high delivery ratio and low end-to-end delay. In road segment, we utilize the link quality between neighbors to select available relays for transmission. In the intersection, by collecting real-time traffic flow information, we derive a connectivity probability function to select road intersections efficiently for transmission and to reduce the path’s sensitivity to vehicle movements. Moreover, integrating the recovery and congestion aware mechanism, the high delivery ratio and low end-to-end delay can be achieved. The simulation results show that our mechanism has significant performance improvement in comparison with other existing geographic routing protocols.