A Connectivity Method for Large-Scale Heterogeneous Networks of Internet of Vehicles with Infrastructure in Urban Scenes

Abstract

The invention discloses a connection method of an Internet of Vehicles massive heterogeneous network with infrastructure in a city scene. The method comprises that firstly, on the basis of adjacent intersections, an intersection gateway build a forwarding path, namely a primary road network, for a target vehicle; on the basis of all possible primary road networks between a source vehicle and the target vehicle, the intersection gateway applies an Internet of Vehicles connection model to calculate and compare the connection possibility of each primary road network; the primary road network with the highest connection possibility is selected out as the forwarding path; the process of calculating the forwarding path is shown in an algorithm 1; and secondly, when the source vehicle receives the primary rod network expressed forwarding path sent by the intersection gateway, a data subgroup is forwarded; and an algorithm 2 specifically describes a data subgroup forwarding process. According to the method, the quality of service demand of an upper layer application can be satisfied; the approximate optimum solution of the connection model is solved by a genetic algorithm; and the forwarding paths demanded by the application program can be found out rapidly.

Description

technical field [0001] The invention relates to the technical field of Internet of Vehicles. Background technique [0002] In the large-scale network system of the new Internet of Vehicles, how to build an interconnection network in real time and maintain a stable state to provide real-time data for the application layer, thereby supporting intelligent services at the application layer, is a difficulty faced by the research on the dynamic evolution mechanism of the large-scale network of the Internet of Vehicles . [0003] At present, in the vehicle self-organizing network VANET, researchers have carried out related research on routing maintenance and achieved certain results, mainly in the three types of routing protocols of VANET, including unicast (Unicast), geographic multicast (Geocast) and broadcast (Broadcast) routing, the specific summary is as follows figure 1 shown. Unicast routing can be divided into four types according to the type of information it needs, suc...

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Problems solved by technology

Its disadvantages are: firstly, there is no candidate path in the routing table saved by the node; secondly, it is only applicable to the network environment of two-way transmission channel; thirdly, the "timeout deletion" routing mechanism adopted may easily cause the route that has not expired to exceed the life cycle. was deleted after

[0014] From the analysis of the current research status at home and abroad, the current Internet of Vehicles routing protocol is mainly aimed at the vehicle-to-vehicle (V2V) communication of the same wireless access method, which cannot meet the needs of today's applications.

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