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Road side unit assisted vehicle networking load balancing routing method

A load balancing and roadside unit technology, applied in the field of Internet of Vehicles communication, can solve the problems of high vehicle node density, low delivery success rate, and long end-to-end delay, so as to reduce network pressure and end-to-end delay , to avoid the effect of timeout packet loss

Active Publication Date: 2019-04-19
SOUTH CHINA UNIV OF TECH
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  • Claims
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AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the defects of low delivery success rate and large end-to-end time delay caused by the high density and uneven distribution of vehicle nodes in the existing Internet of Vehicles technology, and provide a roadside unit-assisted Internet of Vehicles load balanced routing method

Method used

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  • Road side unit assisted vehicle networking load balancing routing method
  • Road side unit assisted vehicle networking load balancing routing method
  • Road side unit assisted vehicle networking load balancing routing method

Examples

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Embodiment

[0046] In this example, if Figure 4 As shown, RSU nodes are deployed at urban road intersections, and RSU nodes within a certain range are wired to form an RSU wired network, and the central server schedules the forwarding of data packets. The diagram contains 4 intersections, and RSUs are deployed separately 1 、RSU2 、RSU 3 、RSU 4 , where RSU 1 and RSU 2 There are many vehicle nodes in the wireless coverage area, the communication task is heavy, and the network pressure is high, which belongs to the heavy load RSU; and the RSU 3 and RSU 4 The network pressure is small, and it is a light-load RSU. In the figure, the vehicle node S is the message source node, and the vehicle node D is the message destination node.

[0047] combine figure 1 , figure 2 and image 3 , a roadside unit-assisted load balancing routing method for the Internet of Vehicles disclosed in this embodiment, comprising the following steps:

[0048] S1. The vehicle node S adds the start time stamp ...

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Abstract

The invention discloses a road side unit assisted vehicle networking load balancing routing method, comprising the following steps: a vehicle node forwards a data packet to a vehicle node near an entrance of an RSU (road side unit) network through a greedy forwarding strategy and sends a request RSU network service probe packet to the entrance of the RSU network; the entrance of the RSU network uploads the probe packet to a central server; the central server estimates the time required by the data packet to pass through the RSU network according to the information of the probe packet, comparesthe remaining lifetime of the data packet, executes a load balancing strategy, and determines an appropriate RSU network entrance and exit; and the data packet passes through the RSU network according to the formulated entrance and exit and then is forwarded to a destination vehicle node through multi-hop greedy. According to the method in the invention, the RSU wired network is used for assisting in delivering inter-vehicle multi-hop information, meanwhile, the waiting time of the data packet in a queue of the heavy-load RSU is reduced by using the load balancing strategy, the vehicle networking routing end-to-end time delay is reduced, and the delivery success rate is improved.

Description

technical field [0001] The invention relates to the technical field of Internet of Vehicles communication, in particular to a load balancing routing method for Internet of Vehicles assisted by a roadside unit. Background technique [0002] The Internet of Vehicles technology refers to the realization of all-round network connections in the vehicle, between vehicles and people, between vehicles and vehicles, between vehicles and roads, and between vehicles and service platforms with the help of a new generation of information and communication technologies, so as to improve the intelligent level of vehicles and autonomous driving capabilities, and build New forms of automobile and transportation services, so as to improve traffic efficiency, improve car driving experience, and provide users with intelligent, comfortable, safe, energy-saving and efficient comprehensive services. As an important infrastructure in the Internet of Vehicles, Road Side Units (RSU) are not only the ...

Claims

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Application Information

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IPC IPC(8): H04L12/803H04W4/44H04W28/08H04W40/02H04W40/20
CPCH04L47/125H04W4/44H04W28/08H04W40/02H04W40/20
Inventor 胡斌杰林霖温清机
Owner SOUTH CHINA UNIV OF TECH
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