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面向气象观测设备的移动边缘计算卸载算法 被引量:1
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作者 尤嘉铖 《信息技术》 2022年第3期78-83,共6页
针对自动气象观测设备计算任务数据量大、存在时延等问题,文中开展了面向自动气象观测设备的移动边缘计算卸载算法的研究。首先,采用内点法对单服务器设备集群的时间延迟优化模型和能量消耗优化模型进行数据建模;其次,利用Lyapunov优化... 针对自动气象观测设备计算任务数据量大、存在时延等问题,文中开展了面向自动气象观测设备的移动边缘计算卸载算法的研究。首先,采用内点法对单服务器设备集群的时间延迟优化模型和能量消耗优化模型进行数据建模;其次,利用Lyapunov优化算法改善系统内的数据积压现象,并进行多服务器设备集群计算卸载算法的研究,从而实现时间延迟与能量消耗两个目标的联合优化;同时,使用Q学习算法完成了未有网络先验知识以及能量状态情况下最优卸载策略的求解。经过实验测试结果表明,文中所提方案将时间延迟与能量消耗均分别降低了23.2%和3.5%。 展开更多
关键词 移动边缘计算 计算卸载算法 自动气象观测设备 Lyapunov优化算法 Q学习算法
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A Greedy Algorithm for Task Offloading in Mobile Edge Computing System 被引量:32
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作者 Feng Wei Sixuan Chen Weixia Zou 《China Communications》 SCIE CSCD 2018年第11期149-157,共9页
Mobile edge computing (MEC) is a novel technique that can reduce mobiles' com- putational burden by tasks offioading, which emerges as a promising paradigm to provide computing capabilities in close proximity to mo... Mobile edge computing (MEC) is a novel technique that can reduce mobiles' com- putational burden by tasks offioading, which emerges as a promising paradigm to provide computing capabilities in close proximity to mobile users. In this paper, we will study the scenario where multiple mobiles upload tasks to a MEC server in a sing cell, and allocating the limited server resources and wireless chan- nels between mobiles becomes a challenge. We formulate the optimization problem for the energy saved on mobiles with the tasks being dividable, and utilize a greedy choice to solve the problem. A Select Maximum Saved Energy First (SMSEF) algorithm is proposed to realize the solving process. We examined the saved energy at different number of nodes and channels, and the results show that the proposed scheme can effectively help mobiles to save energy in the MEC system. 展开更多
关键词 mobile edge computing task off- loading greedy choice energy resource allo- cation
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