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Multi-mode switching type Internet of Vehicles routing method

A car networking and multi-mode technology, applied in the field of car networking communication, can solve the problems of large end-to-end delay, high vehicle node density, and low delivery success rate

Active Publication Date: 2019-11-12
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Multi-mode switching type Internet of Vehicles routing method
  • Multi-mode switching type Internet of Vehicles routing method
  • Multi-mode switching type Internet of Vehicles routing method

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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 type Internet of Vehicles routing method. The method comprises the following steps that: an RSU node performs switching judgment according to the sendingcondition of a data packet of the RSU node and the use condition of a cache stack, and performs switching among a V2I2V greedy forwarding mode, a prediction+copy transmission mode and a load balancing mode. According to the invention, the RSU wired network is utilized to assist in delivering the inter-vehicle multi-hop message. The load balancing according to the residual survival time of the data packet in combination with the estimated waiting time in the RSU message waiting queue, the data packets originally gathered in the heavy-load RSUs are shared to each light-load RSU, so that the network pressure of the heavy-load RSUs is reduced. The overtime packet loss caused by long-time waiting of the data packets in a message waiting queue of the heavy-load RSUs is avoided. Meanwhile, threeworking modes are designed for the RSU, so that the routing protocol can adapt to working environments with low vehicle node density and high vehicle node density. The end-to-end time 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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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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