Method for deducing vehicular infrastructure-based connectivity model in urban scene

Abstract

The invention discloses a method for deducing a vehicular infrastructure-based connectivity model in an urban scene. According to the method, a trunk road network is defined and composed of a plurality of intersection gateways i1, i2...im, and the intersection gateways are adjacent to a group of roads r1, r2...rn, wherein n=m-1. Four attributes of connectivity of the trunk road network are modeled by acquiring the running speeds of all vehicles on each road in the trunk road network and the transmission range of an equipped vehicular network wireless communication device and collecting statistics on the vehicle density on the roads. According to the method, propagation of messages via the trunk road network composed of urban roads and intersection gateways is studied for the objective problems of low interconnection coupling degree and different application program demands in the vehicular network of the urban scene, four connection properties during vehicular network interconnection are formed, and a vehicular infrastructure-based connectivity model in the urban scene is proposed according to the properties, so that the method has an important theoretical guiding significance for the development of large-scale application of the vehicular network.

Description

technical field [0001] The invention relates to the technical field of Internet of Vehicles. Background technique [0002] The goals and characteristics of the Internet of Vehicles determine that the Internet of Vehicles is a large and complex heterogeneous network system composed of different layered networks. It consists of three parts: ① car body domain, which mainly consists of various sensors and terminal nodes in the car to form a small car body network, which is used to obtain in-car information and real-time information of adjacent vehicles; ② physical space domain, mainly composed of physical Various network components in the environment, including different types of roadside infrastructure networks, vehicle body networks, and mobile communication networks; ③Information space domain, mainly including access network types, network service quality, protocol types, network bandwidth, Terminal capabilities, etc. The uncoordinated operation among the various components...

AI Technical Summary

Problems solved by technology

[0019] The purpose of the present invention is to overcome the deficiencies of the prior art, disclose a connectivity model of the Internet of Vehicles with infrastructure in urban scenes, and aim at the objective problems of low interconnection, intercommunication, coupling, and differences in application requirements in the Internet of Vehicles in urban scenes. , studied the four connectivity properties of the IoV interconnection when the message propagates through the main road network composed of urban roads and intersection gateways, and proposed a connectivity model of the IoV with infrastructure in the urban scene according to these properties. The flow chart is as follows figure 1 As shown, this has important theoretical guiding significance for the development of large-scale network applications of the Internet of Vehicles

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