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

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. To achieve the effect of reducing the number, reducing the competition time and improving the efficiency

Active Publication Date: 2018-04-13
陕西必联物极科技有限公司
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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 based on backbone link guarantee delay and vehicle-mounted terminal
  • Geographical location routing method based on backbone link guarantee delay and vehicle-mounted terminal
  • Geographical location routing method based on backbone link guarantee delay and vehicle-mounted terminal

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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 field of vehicle-mounted self-organizing network technology and discloses a geographical location routing method based on the backbone link guarantee delay and a vehicle-mounted terminal. The method comprises steps of using the advantages of real-time traffic information and historical traffic information to select the optimal route transmission information; assigninga weight value for each road section based on information collected by current traffic conditions; establishing a time-delay matrix of the network topology using the weight values; and determining a route with a minimum delay according to the matrix. The method makes full use of the advantages of historical traffic information and real-time traffic information, selects the transmission delay as anindex for finding the optimal route, and in the sparse environment, utilizes historical traffic information to give a statistical analysis of the transmission delay, and in the connected scenario, utilizes real-time traffic information to give an accurate time delay result. The method establishes backbone link transmission data on each road, which 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 Applications(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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