Enhanced neighbor information-based multi-hop broadcast protocol

Abstract

The invention provides an enhanced neighbor information-based multi-hop broadcast protocol (ENIMBP) in a highway scene. A optimal transmitting vehicle is selected by combining neighbor information of vehicles with positions, steering speeds and directions of the vehicles to determine transmitting waiting time. According to the positions of the vehicles, the ENIMBP can initially determine the transmitting waiting time of the vehicles different in distance from a broadcast vehicle. Under the condition of same distance between the vehicles and the broadcast vehicle, the ENIMBP differentiates the transmitting waiting time by means of speeds and directions of the vehicles. The ENIMBP solves the network partitioning problem and node hiding / exposing problem in the highway scene. Simulation results show that the end-to-end delay can be remarkably reduced in a sparse network, and meanwhile, a very high packet arrival rate is maintained. As the speeds and directions of the vehicles are introduced, the transmitting waiting time of the vehicles with same distance can be differentiated, and under the scene of great vehicle density, the high packet arrival rate can be further maintained.

Description

technical field [0001] Ben Xingming belongs to the field of transportation, and specifically relates to the field of information dissemination in transportation. Background technique [0002] According to the 2013 global road safety status report by WHO (World Health Organization), nearly 3,400 people die in traffic accidents every day in the world, and nearly 10 million people are injured or disabled due to traffic accidents every year. Data show that most traffic accidents are caused by drivers' misjudgment, because they cannot anticipate the dangerous situation on the road ahead. In addition, weather and visual obstructions can further reduce the driver's knowledge of the road ahead. [0003] Fortunately, with the continuous research and discussion of vehicle communication by experts and researchers from all over the world, this problem is expected to be resolved. Japan's Demo2000 is the earliest research project on inter-vehicle communication; Europe's C2C-CC, FleetNet...

AI Technical Summary

Problems solved by technology

[0012] Purpose of the invention: The present invention aims at the inherent characteristics of VANET (vehicles moving rapidly, uneven distribution of nodes, frequent changes in network topology, etc.) It is easy to cause problems such as network segmentation and blank waiting time), and an enhanced multi-hop broadcast protocol based on neighbor information is proposed for short ENIMBP (Enhanced Neighbor Information-based Broadcast Protocol)

Images