Research and Optimization of GPSR Routing Protocol for Vehicular Ad-Hoc Network  

作　　者：Jianming Cui Liang Ma Ruirui Wang Ming Liu 

机构地区：[1]School of Information Engineering,Chang'an University,Xi'an 710064,China [2]National Computer Network Emergency Response Technical Team/Coordination Center of China,Beijing 100029,China

出　　处：《China Communications》2022年第10期194-206,共13页中国通信（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (No. 62106060)

摘　　要：Security is one of the most critical issues to Vehicular Ad-hoc Networks (VANETs) since the information transmitted is asynchronous and distributed. Vulnerability and instability are two of the challenges remain to be addressed by the research community and the industry. In this paper, we first proposed a trust reliability based model and extended the GPSR protocol to TM-GPSR protocol. Then, we improved the LET-GPSR protocol based on the link connection time prediction. On this basis, combined the decision index of the TM-GPSR and LET-GPSR protocols, we proposed the RC-GPSR routing protocol. We built the standard testing platform on the NS2 and SUMO, the average end-to-end delay and packet delivery rate of GPSR protocol and the three updates protocols under different node density, node speed, and malicious node ratio are simulated and evaluated. The results showed that under the same conditions, compared with GPSR protocol, RC-GPSR protocol has a lower average end-to-end delay and a higher packet delivery rate, which effectively improves the link stability and security.

关 键 词：VANET GPSR protocol trust reliability link connection time 

分 类 号：TN915.04[电子电信—通信与信息系统] U463.67[电子电信—信息与通信工程]