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A method for obtaining the connectivity index of the Internet of Vehicles in the urban road scene

An acquisition method and connectivity technology, applied in the field of Internet of Vehicles, can solve problems such as lack of consideration of vehicle dynamic changes and network stability, uneven distribution of vehicles, and empty forwarding nodes at intersections.

Active Publication Date: 2019-11-29
TONGJI UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art, aiming at problems such as the uneven distribution of vehicles, the empty forwarding nodes at intersections, and the lack of consideration of vehicle dynamic changes and network stability in the existing Internet of Vehicles connectivity measurement index, a "link survival time" is proposed. "This new concept is used as an indicator to analyze and evaluate the connectivity of the Internet of Vehicles network in urban road scenarios.

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  • A method for obtaining the connectivity index of the Internet of Vehicles in the urban road scene
  • A method for obtaining the connectivity index of the Internet of Vehicles in the urban road scene
  • A method for obtaining the connectivity index of the Internet of Vehicles in the urban road scene

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Embodiment Construction

[0044] The complete technical scheme of the present invention comprises two parts, see Figure 7 Shown:

[0045] Big step 1. Static connectivity analysis of the Internet of Vehicles in the urban road scene;

[0046] Big step 2. Analysis of dynamic connectivity of Internet of Vehicles in urban road scenarios.

[0047] Based on the technical solution of the present invention, it will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0048] 1. Static connectivity analysis of Internet of Vehicles in urban road scene

[0049] Based on the vehicle static distribution model, the influence of vehicle wireless communication distance and vehicle density on the connectivity of the Internet of Vehicles is analyzed.

[0050] Define the connectivity metering formula (1), which indicates the logarithm of mutual reachability between vehicles when the number of vehicle nodes is n and the communication range of the wireless network is r (Note: two ...

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Abstract

The prior art can only evaluate the network connectivity at the time by means of indexes such as the vehicle density and cannot evaluate the stability and the effective duration of a link, thereby lacking consideration for dynamic changes of vehicles and the network stability. The invention provides a method for acquiring an Internet of Vehicles connectivity index in an urban road scene, which provides the link survival duration to act as a new measuring index for the connectivity of the Internet of Vehicles from the aspects of static connection characteristics and dynamic connection characteristics of the Internet of Vehicles in the urban road scene, thereby providing help for measuring the overall connectivity and the stability of the Internet of Vehicles in urban roads and designing a routing protocol.

Description

technical field [0001] The invention relates to the field of Internet of Vehicles. Background technique [0002] The connectivity of the Internet of Vehicles mainly studies the connectivity probability of the network in the Internet of Vehicles, the stability of the link, and the transmission delay of data packets. The connectivity measurement is an important measurement method for the design of the routing mechanism of the Internet of Vehicles, because the measurement of connectivity directly affects Selection of paths to routing protocols. Some studies simply use vehicle density as an indicator of road connectivity. However, high road density may only be due to local dense distribution, and vehicle clustering occurs, forming several branches that are not connected to each other. A more accurate study considers the influence of connectivity rate and delay. The connectivity rate and delay can count the success rate and delay of network transmission by sending location data ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/26H04L29/08G06Q50/26G06Q10/06
CPCG06Q10/06393G06Q50/26H04L43/0811H04L67/12
Inventor 程久军张晓言秦鹏宇
Owner TONGJI UNIV
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