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Geographical location routing method and vehicle terminal based on backbone link guarantee delay

A geo-location and time-delay technology, which is applied to services based on location information, services based on specific environments, vehicle components, etc., can solve problems such as suboptimal, inaccurate historical traffic information statistical structure, local optimization and data congestion, etc. Achieve the effect of reducing competition time, improving efficiency and reducing the number of

Active Publication Date: 2020-11-17
陕西必联物极科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] To sum up, the problems existing in the existing technology are: the current routing protocols in the vehicle environment are prone to local optimization and data congestion; the statistical structure of historical traffic information is inaccurate, resulting in suboptimal routing decisions; Difficult to calculate routing metrics

Method used

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  • Geographical location routing method and vehicle terminal based on backbone link guarantee delay
  • Geographical location routing method and vehicle terminal based on backbone link guarantee delay
  • Geographical location routing method and vehicle terminal based on backbone link guarantee delay

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0035] The role of vehicular ad hoc networks in enhancing road safety and improving traffic efficiency has attracted more and more attention; effective routing protocols are more important in urban vehicular environments. The rapid movement of nodes, the dynamic change of topology, and the complex channel environment make routing selection changes very challenging.

[0036] The application principle of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0037] Such as figure 1 As shown, the geographic location routing method based on backbone link gu...

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Abstract

The invention belongs to the technical field of vehicle-mounted self-organizing networks, and discloses a geographic location routing method and a vehicle-mounted terminal based on backbone link guaranteed time delay, which utilizes the advantages of real-time traffic information and historical traffic information to select the optimal routing transmission information; Based on the information collected by the current traffic conditions, each road section can be assigned a weight value; the weight value is used to establish the delay matrix of the network topology; and a minimum delay route is determined according to the matrix. The present invention makes full use of the advantages of historical traffic information and real-time traffic information, and selects transmission time delay as an index for finding the optimal route; in a sparse environment, a statistical analysis of transmission time delay is provided by using historical traffic information; in connected In this scenario, using real-time traffic information gives an accurate time-delay result. The invention establishes a backbone link to transmit data on each road, can reduce the number of sending nodes, reduce the competition time of the MAC layer, and improve the efficiency of data transmission.

Description

technical field [0001] The invention belongs to the technical field of vehicle-mounted self-organizing networks, and in particular relates to a geographic location routing method and a vehicle-mounted terminal based on backbone link guaranteed time delay. Background technique [0002] In recent years, VANs have attracted more and more attention; in order to support different applications, VANs mainly provide three communication modes: vehicle-to-vehicle, vehicle-to-facility, and hybrid structures. The rapid movement of nodes in vehicular ad hoc networks, the dynamic change of topology, and the complex channel environment pose challenges to effective routing protocols. To meet the challenge, an in-depth study of routing protocols in the vehicular environment; is divided into two categories: topology-based routing protocols and geographic location-based routing protocols. In order to design an effective routing protocol based on geographical location, two problems need to be ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/727H04L12/24H04W4/40H04W4/021H04W40/20H04W4/02H04L45/121
CPCH04L41/12H04L45/121H04W4/021H04W4/027H04W40/20
Inventor 陈晨刘雷吕宁惠晓哲裴庆祺
Owner 陕西必联物极科技有限公司
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