A multi-mode switching routing method for Internet of Vehicles

A vehicle networking, multi-mode technology, applied in the field of vehicle networking communication, can solve the problems of low delivery success rate, high vehicle node density, large end-to-end delay, etc., to improve delivery rate, reduce network pressure, and reduce end-to-end delay. The effect of end delay

Active Publication Date: 2021-06-08
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
  • Claims
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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 due to extremely high or low vehicle node density in the existing Internet of Vehicles technology, and provide a multi-mode switching Internet of Vehicles routing method

Method used

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  • A multi-mode switching routing method for Internet of Vehicles
  • A multi-mode switching routing method for Internet of Vehicles
  • A multi-mode switching routing method for Internet of Vehicles

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Embodiment

[0087] In this example, if Figure 4 As shown, the RSU is deployed at the intersection of urban roads. The connection between RSU and RSU, RSU and central server is connected by optical fiber, which can provide high-speed and large-capacity wired communication. DSRC-based V2V communication is used between vehicles, and DSRC-based V2I communication is used between vehicles and RSUs.

[0088] combine figure 1 and figure 2 , a multi-mode switching routing method for Internet of Vehicles disclosed in this embodiment, comprising the following steps:

[0089] S1. The message source node generates a data packet, and sets the RSU node closest to itself as the delivery target of the first stage, which is recorded as the RSU entry node. The data packet is forwarded to the RSU entry node through multi-hop V2V communication.

[0090] S2. The RSU ingress node judges whether it is in the load balancing mode, and if so, proceeds to step S3; otherwise, proceeds to step S4.

[0091] S3. A...

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Abstract

The invention discloses a multi-mode switching routing method for Internet of Vehicles, which includes the RSU node switching judgment according to the sending status of its own data packets and the usage status of the cache stack, and in the V2I2V greedy forwarding mode, "prediction + copy transmission" mode, Switch between load balancing modes. The invention utilizes the RSU wired network to assist in the delivery of multi-hop messages between vehicles, and performs load balancing according to the remaining survival time of the data packets combined with the estimated waiting time in the RSU message waiting queue, so that the data packets originally gathered in the heavy-load RSU are allocated to each Light-loaded RSUs reduce the network pressure of heavy-loaded RSUs, avoiding data packets waiting in the message waiting queue of heavy-loaded RSUs for a long time and causing overtime packet loss; at the same time, three working modes are designed for RSUs so that the routing protocol can adapt to low vehicle node density In a working environment with high vehicle node density, the end-to-end delay of Internet of Vehicles routing is reduced, and the delivery rate is improved.

Description

technical field [0001] The invention relates to the technical field of Internet of Vehicles communication, in particular to a routing method for Internet of Vehicles with multi-mode switching. 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 physical interfac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/44H04W28/08H04W40/04
CPCH04W28/08H04W40/04H04W4/44
Inventor 胡斌杰林霖温清机
Owner SOUTH CHINA UNIV OF TECH
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