A method for optimizing the layout of roadside communication units in a dedicated short-range communication system for Internet of Vehicles

Abstract

The invention discloses a layout optimization method of a short-range communication system roadside communication unit special for the Internet of vehicles. The method includes the steps that firstly, an Internet-of-vehicles roadside unit network in an actual application scene is extracted and abstracted into a complex network; secondly, a target function and an efficiency and cost function are built; thirdly, initial disturbance is introduced to simulate the cascading failure process of the network, and parameters of the target function are adjusted; fourthly, parameters in the CRO algorithm are determined, and the iteration process is executed to obtain the global optimal solution; fifthly, change trends of four theoretical index values corresponding to the global iteration process are recorded and saved in an information database, and qualitative and quantitative evaluation and reference are provided for similar network optimization. The network structure of the Internet-of-vehicles roadside unit network is optimized by means of related theories of the complex network according to the common cascading failure problem in a communication network, and reliable guarantee is provided for normal operation of a vehicle self-organizing network.

Description

Technical field [0001] The invention relates to a network optimization method for a roadside unit of a vehicle network in the cross field of a vehicle self-organizing network and a complex network theory, in particular to a method for optimizing the layout of a roadside communication unit of a special short-range communication system for the vehicle network. Background technique [0002] The research method of complex network theory mainly expresses complex systems, such as Internet, natural network, and social network, as a collection of points and edges in the network. Points represent basic units and edges represent the relationship between basic units. Concepts to illustrate the inherent properties of points and edges. This kind of representation is more reasonable to explain the basic structure and properties of complex systems, which is conducive to the research on the basic structure and properties of complex systems. Research on complex systems based on complex network t...

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Problems solved by technology

[0004] The cascading failure problem can be defined as a deliberate or random attack on a complex system (complex network), resulting in the damage or loss of one or several nodes, and the damage or loss of one or several nodes spreads further, further leading to Collapse of complex systems at a certain scale or even at a global scale

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