A vector-based improved geographic information routing protocol

With the popularization and increase of vehicles, the development of VANETs (Vehicular Ad-hoc Networks) has been promoted. GPSR (greedy perimeter stateless routing) is a geographic information routing protocol applied to vehicular ad-hoc networks. This paper analyzes the shortcomings of the traditional GPSR routing protocol and proposes an improved protocol algorithm for the problem of low delivery rate and long delay. The algorithm introduces the mechanism of fixed nodes at intersections, and selects a more stable next hop forwarding node through vector calculation and partition model. In the NS3 simulation platform, we compare the delivery rate, average of delay, throughput these parameters of traditional routing protocol and improved protocol. The result shows that the improved routing protocol is more stable than traditional GPSR.