Enhanced neighbor information-based multi-hop broadcast protocol

A technology of neighbor information and broadcast protocol, which is applied in information dissemination in traffic, and in the field of traffic, can solve problems such as blank waiting time, easy network segmentation, frequent changes in network topology, etc.

Inactive Publication Date: 2013-12-25
镇江青思网络科技有限公司
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  • Abstract
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  • Claims
  • Application Information

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

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  • Enhanced neighbor information-based multi-hop broadcast protocol
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  • Enhanced neighbor information-based multi-hop broadcast protocol

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Embodiment Construction

[0063] system model

[0064] It is assumed that each vehicle can obtain its own precise position, speed and driving direction through the positioning system. Each car has the same processor and computing power, and wireless signals travel at nearly the speed of light. Therefore, although the end-to-end delay of the broadcast is related to the processing delay, transmission delay and queue waiting delay of the data packet, since both the processing delay and the transmission delay can be regarded as constants, it is the queue that really determines the end-to-end delay. Wait for the delay.

[0065] At present, most highways are bidirectional. Choosing vehicles traveling in the opposite direction as forwarding nodes can not only solve the problem of network segmentation in sparse networks, but also adapt to different scenarios [NADEEM T, SHANKAR P, IFTODE L.A comparative study of data dissemination models for vanets [C]. 3rd Annual International Conference on Mobile and Ubiqui...

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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...

Claims

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Application Information

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IPC IPC(8): H04W4/04H04W4/06
Inventor 宋文广蔡耿雄赵海涛李大鹏
Owner 镇江青思网络科技有限公司
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