Internet of Vehicles multi-attribute switching method of visible light communication system

Abstract

The invention relates to an Internet of Vehicles multi-attribute switching method of a visible light communication system, and belongs to the technical field of optical communication. According to themethod provided by the invention, the optimal alternative network is searched by adopting the improved multi-attribute decision algorithm, so that the failure rate of inter-network switching in the outdoor visible light communication system is reduced, the ping-pong effect is avoided, and the communication performance of the system is improved. According to the invention, a specific communicationprocess of outdoor Internet of Vehicles visible light communication is established; a network multi-attribute switching algorithm solution structure is designed based on the communication process; the completely independent objective weight and comprehensive weight solved in the network attribute switching algorithm are improved, so that the running vehicle can select the optimal network more timely and correctly for switching. The method provided by the invention can effectively reduce the failure rate of inter-network switching in the outdoor visible light communication system, avoids the ping-pong effect, improves the communication performance of the system, and can improve the data rate of system communication and reduce the communication cost on the basis of ensuring the throughput of the system.

Description

technical field [0001] The invention belongs to the technical field of optical communication, and relates to a multi-attribute switching method for the Internet of Vehicles of a visible light communication system. Background technique [0002] In recent years, Internet of Vehicles has received extensive attention in related research fields. In the Internet of Vehicles, vehicles can communicate with other vehicles or roadside facilities through the links between Vehicle to Vehicle (V2V) and Vehicle to Infrastructure (V2I). The Internet of Vehicles collects and shares information through cars to enable smarter and safer driving. At the same time, LED-based visible light communication is regarded as an optional supplementary communication method in the intelligent transportation of the Internet of Vehicles. It is a new type of wireless communication technology. Not high, unlimited transmission power and other advantages. In V2IVLC, the combination of the small area coverage ...

AI Technical Summary

Problems solved by technology

[0003] At present, many methods for indoor visible light communication switching have been used, such as fuzzy logic, neural network, genetic algorithm and other artificial intelligence methods, but the research on the vehicle networking switching method for outdoor visible light communication system is still in the preliminary research stage. Most of the methods used are relatively simple, such as setting thresholds with single attributes, making judgments with multi-attribute decision trees, or using SAW to find objective weights of multiple attributes, etc.

Among them, the single-attribute setting threshold method is used to filter the network with poor network performance by setting the attribute threshold, and select the network with the largest attribute value as the target switching network. However, using a single attribute as the network selection criterion is relatively one-sided and less objective.

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