• 中国计算机学会会刊
  • 中国科技核心期刊
  • 中文核心期刊

计算机工程与科学 ›› 2021, Vol. 43 ›› Issue (03): 435-441.

• 计算机网络与信息安全 • 上一篇    下一篇

物联网感知数据边缘卸载机制研究

袁培燕,耿丽娟,张豪   

  1. (河南师范大学计算机与信息工程学院,河南 新乡 453007)
  • 收稿日期:2020-08-05 修回日期:2020-11-10 接受日期:2021-03-25 出版日期:2021-03-25 发布日期:2021-03-26
  • 基金资助:
    国家自然科学基金(62072159,U1804164,U1404602)

Study on edge offloading mechanism of sensing data in Internet of Things

YUAN Pei-yan,GENG Li-juan,ZHANG Hao    

  1. (School of Computer and Information Engineering,Henan Normal University,Xinxiang 453007,China)

  • Received:2020-08-05 Revised:2020-11-10 Accepted:2021-03-25 Online:2021-03-25 Published:2021-03-26

摘要: 物联网的普及与增强现实等计算密集型应用产生的大量数据,给当前骨干网络带来沉重的流量负担。为了提升用户体验,需要将感知数据迁移到距离用户更近的边缘服务器中。考虑到边缘服务器的资源相对有限,如何确定适当的数据卸载比例是一个无法回避的问题。首先,将该问题表述为一个包含延迟和能量消耗2个关键性能指标的序列二次规划问题。其次,利用有效集算法进行求解,得出在一定计算卸载能耗约束下的最佳工作负载分配比例。最后,通过Matlab仿真实验,验证了在任务负载到达率远远大于边缘服务器处理速率时,所提方案具有最佳的延迟性能。


关键词: 计算密集型, 序列二次规划, 延迟, 能量

Abstract: The pervasive of Internet of Things and the large amount of data generated by computation-  intensive applications such as augmented reality have placed a heavy burden on the current backbone network. In order to improve user experience, it is necessary to migrate the sensing data to the edge server closer to users. Considering the relatively limited resources of the edge server, it is a key problem to determine the appropriate proportion of data offloading in advance. Firstly, this paper expresses the problem as a sequential quadratic program with two key performance indicators: delay and energy consumption. Secondly, sequential quadratic programming algorithm is used to solve the problem, and the optimal workload offloading ratio is obtained under a certain constraint of energy consumption. Finally, through Matlab simulation experiment, it is verified that the proposed scheme has the best delay performance when the data arrival rate is far greater than the edge server processing rate.


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