卫星边缘计算网络中多目标强化学习驱动的任务卸载算法。

IF 3.9 2区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES
Sai Xu, Jun Liu, Jiawei Tang, Xiangjun Liu, Zhi Li
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引用次数: 0

摘要

卫星边缘计算(SEC)已成为提高服务质量、减少星地回程带宽压力和降低任务请求平均响应延迟的革命性范式。为了满足地面用户快速增长的需求,本文提出了一种基于K-D3QN的任务卸载算法。该算法对DQN算法进行了改进,引入了卫星资源聚类模块、DDQN算法和竞争网络机制模块。卸载决策过程综合考虑任务时延、资源利用率和负载均衡程度三个优化目标,实现动态多目标优化。实验结果表明,该算法显著降低了任务延迟,提高了资源利用率和负载均衡程度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Multi objective reinforcement learning driven task offloading algorithm for satellite edge computing networks.

Multi objective reinforcement learning driven task offloading algorithm for satellite edge computing networks.

Multi objective reinforcement learning driven task offloading algorithm for satellite edge computing networks.

Multi objective reinforcement learning driven task offloading algorithm for satellite edge computing networks.

Satellite edge computing (SEC) has become a revolutionary paradigm to improve the quality of service, reduce the pressure on satellite-terrestrial backhaul bandwidth and reduce the average response delay of task requests. In this paper, we propose a task offloading algorithm based on K-D3QN to meet the rapidly growing demand of ground users. This algorithm improves the DQN algorithm by incorporating a satellite resource clustering module, a DDQN algorithm, and a competitive network mechanism module. The offloading decision-making process comprehensively considers three optimization objectives: task latency, resource utilization, and load-balancing degree, to achieve dynamic multi-objective optimization. Experimental results shown that the algorithm significantly reduces task latency, improves resource utilization and load-balancing degree.

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来源期刊
Scientific Reports
Scientific Reports Natural Science Disciplines-
CiteScore
7.50
自引率
4.30%
发文量
19567
审稿时长
3.9 months
期刊介绍: We publish original research from all areas of the natural sciences, psychology, medicine and engineering. You can learn more about what we publish by browsing our specific scientific subject areas below or explore Scientific Reports by browsing all articles and collections. Scientific Reports has a 2-year impact factor: 4.380 (2021), and is the 6th most-cited journal in the world, with more than 540,000 citations in 2020 (Clarivate Analytics, 2021). •Engineering Engineering covers all aspects of engineering, technology, and applied science. It plays a crucial role in the development of technologies to address some of the world''s biggest challenges, helping to save lives and improve the way we live. •Physical sciences Physical sciences are those academic disciplines that aim to uncover the underlying laws of nature — often written in the language of mathematics. It is a collective term for areas of study including astronomy, chemistry, materials science and physics. •Earth and environmental sciences Earth and environmental sciences cover all aspects of Earth and planetary science and broadly encompass solid Earth processes, surface and atmospheric dynamics, Earth system history, climate and climate change, marine and freshwater systems, and ecology. It also considers the interactions between humans and these systems. •Biological sciences Biological sciences encompass all the divisions of natural sciences examining various aspects of vital processes. The concept includes anatomy, physiology, cell biology, biochemistry and biophysics, and covers all organisms from microorganisms, animals to plants. •Health sciences The health sciences study health, disease and healthcare. This field of study aims to develop knowledge, interventions and technology for use in healthcare to improve the treatment of patients.
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