D2D-based multi-access edge computing task unloading method in Internet of Vehicles environment

Abstract

The invention discloses a D2D-based multi-access edge computing task unloading method in an Internet of Vehicles environment. According to the method, a task unloading strategy, transmitting power anda channel resource allocation mode are modeled into a mixed integer nonlinear programming problem, and the optimization problem is maximization of the sum of time delay and energy consumption benefits of all terminal CUE in cellular communication with a base station in an Internet of Vehicles system. According to the method, the time complexity is low, the channel resources of the Internet of Vehicles system can be effectively utilized, the time delay reliability of the terminal DUE performing local V2V data exchange in a D2D communication mode is ensured, meanwhile, the time delay and energyconsumption of the CUE are close to the minimum, and the requirements for low time delay and high reliability of the Internet of Vehicles are met. Verification is carried out by building a simulationplatform, the total time delay and energy consumption of the CUE are approximately minimized, and the method has performance advantages compared with a traditional task unloading method.

Description

Technical field [0001] The invention relates to the technical field of wireless communication and Internet of Vehicles, in particular to a D2D-based multi-access edge computing task offloading method in an Internet of Vehicles environment. Background technique [0002] With the rapid development of the Internet of Vehicles, vehicles have become more intelligent in supporting intelligent applications (autonomous driving, real-time video assistance, navigation and interactive games). Vehicle communication improves road safety and traffic efficiency, while providing more diverse entertainment scenarios. For services that require the exchange of large amounts of data, such as media streaming and content sharing, a large communication capacity is obtained through the vehicle-to-infrastructure (V2I) link. At the same time, information that is essential to safety, such as cooperative awareness information and scattered environmental notification information, usually requires periodic o...

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Problems solved by technology

[0006] In view of this, the purpose of the present invention is to provide a D2D-based multi-access edge computing task offloading method in the Internet of Vehicles environment, which solves the problem of minimizing time delay and energy consumption in the Internet of Vehicles system with low time complexity.

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