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Unmanned aerial vehicle auxiliary edge calculation unloading method based on terminal energy efficiency optimization

An edge computing and computing offloading technology, applied in specific environment-based services, reducing energy consumption, wireless communication, etc., can solve the lack of discussion on the channel conditions between user terminals and drones, and the inability to guarantee the effectiveness of models and solutions and reliability, computing offloading, and local computing asynchrony, etc., to achieve a wide range of practical application scenarios, with effectiveness and reliability, and to improve effectiveness

Active Publication Date: 2021-02-23
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0009]In the above research, there are the following problems: 1) Whether it is a full uninstall strategy or a binary uninstall strategy, the task of the user terminal can only be performed locally at the same time. Or edge side execution, which leads to a waste of computing resources on the other side at the same time
This may lead to consequences of user computing offload and local computing being out of sync
3) There is a lack of discussion on the channel conditions between the user terminal and the UAV
In the case of unstable channel conditions, there is no guarantee that the proposed model and scheme will still be effective and reliable

Method used

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  • Unmanned aerial vehicle auxiliary edge calculation unloading method based on terminal energy efficiency optimization
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  • Unmanned aerial vehicle auxiliary edge calculation unloading method based on terminal energy efficiency optimization

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Embodiment Construction

[0038] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0039] Such as figure 1 As shown, the UAV-assisted edge computing system consists of a UAV installed with an edge computing server and a user terminal on the ground. Among them, each user terminal has a certain computing capability, which meets the demand for performing simple tasks locally. In contrast, UAVs have extremely strong computing capabilities, can quickly complete computing-intensive tasks, and provide edge computing services for user terminals. In the system, each user terminal can perform local computing and computing offloading at the same time. Similarly, the drone can also perform the task of unloading the user terminal to the drone while flying.

[0040] Assuming that the tasks of the user terminal can be divided and placed on the user's local and UAV edge computing servers for execution, we adopt a partial offloading strategy to jointly o...

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Abstract

The invention discloses an unmanned aerial vehicle auxiliary edge calculation unloading method based on terminal energy efficiency optimization, and the method comprises the steps: jointly optimizingthe task load of local calculation of a user terminal, the task load of calculation unloading and the track of an unmanned aerial vehicle through a global optimization algorithm based on block coordinate descent; the optimization effect on the energy consumption of the user terminal under different channel conditions is discussed, and finally, the unmanned aerial vehicle auxiliary edge calculationmodel taking the minimization of the energy consumption of the user terminal as a target and taking the task load and the time delay demand of the user and the energy of the unmanned aerial vehicle as constraints is constructed. According to the method, computing resources of a local side and an edge side are fully utilized, the energy efficiency of the user terminal is improved, the time delay of local calculation of the user terminal is considered, synchronous completion of local and edge side calculation in task time is ensured, and the effectiveness of the method is improved. In addition,effectiveness and reliability of the method under different channel conditions are verified, and the method has a wider practical application scene.

Description

technical field [0001] The present invention relates to the technical field of computer wireless communication, in particular to an unloading method for unmanned aerial vehicle-assisted edge computing based on terminal energy efficiency optimization. Background technique [0002] With the development of Internet of Things (IoT) technology, many mobile application services have emerged, such as augmented reality (AR), virtual reality (VR), face recognition, and lightweight deep learning applications. These application services are often time-sensitive and require user terminals to have strong computing capabilities. As for the mobile user's terminal equipment, its limited energy and computing power cannot well meet the user's application requirements. [0003] Mobile Edge Computing (MEC) technology deploys servers on the edge side of mobile users, enabling resource-constrained user terminals to offload computationally intensive tasks to edge servers for execution, greatly re...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/40H04W24/02
CPCH04W4/40H04W24/02Y02D30/70
Inventor 余雪勇朱烨牛文巾
Owner NANJING UNIV OF POSTS & TELECOMM
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