Distributed distribution method and system of car networking emergent message transmission information

A technology for emergency message and information transmission, which is applied in transmission systems, devices that provide special services in branch offices, data exchange details, etc., and can solve the problems of reducing and increasing the delay of emergency data transmission

Inactive Publication Date: 2014-11-12
NETTECH TECH SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The transmission of emergency messages between vehicles depends on the connectivity model of the network, and how the connectivity of vehicle nodes in the network is related to the traffic flow. Considering the distribution of traffic flow in the channel allocation method is one of the difficult problems that need to be solved urgently; On the other hand, if the

Method used

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  • Distributed distribution method and system of car networking emergent message transmission information
  • Distributed distribution method and system of car networking emergent message transmission information
  • Distributed distribution method and system of car networking emergent message transmission information

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Embodiment Construction

[0049] see Figure 1 to Figure 5 As shown, among them, figure 1 It is a schematic diagram of an embodiment of the Internet of Vehicles system of the present invention, figure 2 It is a schematic diagram of an embodiment of a broadcast message of the distributed distribution method of emergency message transmission information in the Internet of Vehicles of the present invention, image 3 It is a schematic diagram of an embodiment of the distributed distribution method of emergency message transmission information in the Internet of Vehicles of the present invention when it is applied to a highway traffic scene, Figure 4 It is a flow chart of an embodiment when the vehicle node acts as a sending end in the distributed distribution method of the Internet of Vehicles emergency message transmission information of the present invention, Figure 5 It is a flow chart of an embodiment of vehicle nodes processing broadcast messages in the distributed distribution method of vehicle ...

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Abstract

The invention provides a distributed distribution method and system of car networking emergent message transmission information. Connection between a traffic flow and a car networking connectivity model is built by means of a poisson distribution model, and connectivity probability, connected set length, the number of connected sets and other important parameters are applied to the emergent message channel distribution method according to highway traffic scenes. Namely, vehicle nodes automatically adjust and control transmitting power to adjust the maximum communication distance according to vehicle node density, active channel time slot situations and the like of adjacent nodes obtained in a control channel, and accordingly the scale of the nodes scrambling for safe channel frequency band time slots on a certain road segment is effectively controlled, and the success rate and time delay of data sending of any node are guaranteed.

Description

technical field [0001] The present invention relates to a distributed distribution method and system for emergency message transmission information of the Internet of Vehicles, especially an emergency message transmission for the Internet of Vehicles that can improve the traffic flow of emergency messages and the competition of wireless channels for expressway traffic scenarios. Channel allocation method and system. Background technique [0002] People's attention to road traffic safety issues continues to rise, making the research on Vehicular Ad Hoc Network (VANET) a hot topic in the current academic and industrial circles. The essence of the Internet of Vehicles is to realize single-hop or multi-hop wireless communication between vehicles and between vehicles and roadside facilities, and to establish a temporary wireless network environment by self-organization. The communication content includes traffic accident location information , vehicle speed information, vehicle ...

Claims

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Application Information

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IPC IPC(8): H04L29/08H04L12/18
Inventor 刘业
Owner NETTECH TECH SUZHOU
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