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

An edge computing and Internet of Vehicles technology, which is applied in the direction of specific environment-based services, communication between vehicles and infrastructure, and vehicle wireless communication services, to ensure reliability, minimum delay and energy consumption, and low time complexity Effect

Active Publication Date: 2021-07-20
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • D2D-based multi-access edge computing task offloading method in the Internet of Vehicles environment
  • D2D-based multi-access edge computing task offloading method in the Internet of Vehicles environment
  • D2D-based multi-access edge computing task offloading method in the Internet of Vehicles environment

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Embodiment

[0081] Such as figure 1 As shown, the application scenario is that a single base station is deployed next to the road, and an edge computing server is deployed next to the base station. The base station adopts OFDMA access mode. There are a certain number of CUEs and DUEs within the coverage of the base station. The request may be executed locally on the CUE or on the edge computing server side. Local data exchange is performed between DUEs in the form of D2D. DUEs reuse the channels of CUEs, and CUEs and DUEs cause communication interference with each other.

[0082] figure 2 The flow chart of the entire multi-access edge computing task offloading method is shown. In this embodiment, the D2D-based multi-access edge computing task offloading method in the Internet of Vehicles environment specifically includes the following steps:

[0083] S1. Model the optimization problem as a problem of maximizing the sum of delay and energy consumption benefits, where the benefit is defin...

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Abstract

The present invention discloses a D2D-based multi-access edge computing task offloading method in the Internet of Vehicles environment. The method models the task offloading strategy, transmission power and channel resource allocation mode as a mixed integer nonlinear programming problem, and the optimization problem is The sum of the time delay and energy consumption benefits of all terminals CUE that communicate with the base station in the Internet of Vehicles system is maximized. This method has low time complexity, can effectively utilize the channel resources of the Internet of Vehicles system, and ensure the reliability of the delay of the terminal DUE for local V2V data exchange in the form of D2D communication. Low latency and high reliability requirements. The present invention is verified by building a simulation platform, and the total time delay and energy consumption of the CUE are nearly minimized. Compared with the traditional task offloading method, the method has performance advantages.

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 are becoming 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 such as media streaming and content sharing that require the exchange of large amounts of data, large communication capacity is obtained through vehicle-to-infrastructure (V2I) links. At the same time, safety-critical information, such as cooperative awareness information and decentralized environmental notification information, usually needs to propagate safety-r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/40H04W4/70H04W24/02
CPCH04W4/40H04W4/70H04W24/02Y02D30/70H04W52/0219H04W72/04H04W52/383H04W4/44H04W4/46H04W72/02
Inventor 胡斌杰卢昇和
Owner SOUTH CHINA UNIV OF TECH
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