通信学报 ›› 2020, Vol. 41 ›› Issue (4): 34-44.doi: 10.11959/j.issn.1000-436x.2020081

• 专题:边缘计算关键技术 • 上一篇    下一篇

异构蜂窝网络中分层任务卸载:建模与优化

赵临东1,2,庄文芹1,2,陈建新1,2,周亮1,2   

  1. 1 南京邮电大学通信与网络技术国家工程研究中心,江苏 南京 210003
    2 南京邮电大学宽带无线通信与传感网技术教育部重点实验室,江苏 南京 210003
  • 修回日期:2020-03-16 出版日期:2020-04-25 发布日期:2020-04-30
  • 作者简介:赵临东(1996- ),男,山东临沂人,南京邮电大学博士生,主要研究方向为无线资源分配、多媒体通信|庄文芹(1986- ),女,安徽阜阳人,南京邮电大学博士生、实验师,主要研究方向为多媒体通信|陈建新(1973- ),男,江苏南通人,博士,南京邮电大学副教授、硕士生导师,主要研究方向为人体运动追踪、触觉网络|周亮(1981- ),男,安徽芜湖人,博士,南京邮电大学教授、博士生导师,主要研究方向为多媒体通信
  • 基金资助:
    国家自然科学基金资助项目(61571240);国家自然科学基金资助项目(61671253);江苏高校优势学科建设工程基金资助项目

Hierarchical task offloading in heterogeneous cellular network:modeling and optimization

Lindong ZHAO1,2,Wenqin ZHUANG1,2,Jianxin CHEN1,2,Liang ZHOU1,2   

  1. 1 National Engineering Research Center of Communication and Network Technology,Nanjing University of Posts and Telecommunications,Nanjing 210003,China
    2 Key Laboratory of Broadband Wireless Communication and Sensor Network Technology (Ministry of Education),Nanjing University of Posts and Telecommunications,Nanjing 210003,China
  • Revised:2020-03-16 Online:2020-04-25 Published:2020-04-30
  • Supported by:
    The National Natural Science Foundation of China(61571240);The National Natural Science Foundation of China(61671253);The Priority Academic Program Development of Jiangsu Higher Education Institutions

摘要:

为提高计算任务卸载的效率,提出了一种基于D2D通信、移动边缘计算和云计算的分层任务卸载框架,并引入 D2D 协作中继技术辅助用户接入远端计算资源。针对所提任务卸载框架在多用户场景中可能存在上行通信拥塞、边缘计算资源受限、D2D复用干扰和云计算回程时延等问题,设计了一种基于博弈论的卸载调度和负载均衡方案,充分利用了所提任务卸载框架中各层计算和通信资源。仿真结果表明,所提方案能够有效降低端到端时延和卸载能耗,并在资源受限的条件下具有良好的稳定性。

关键词: 分层任务卸载, 移动边缘计算, D2D通信, 云计算, 博弈论

Abstract:

To improve the efficiency of computation offloading,a hierarchical task offloading framework based on device-to-device (D2D) communication,mobile edge computing and cloud computing was proposed,in which cooperative D2D relay technology was introduced to assist users to access remote computing resources.Considering the negative effects of uplink channel congestion,limited edge computing capability,D2D reuse interference and backhaul delay of cloud computing in the multi-user scenario of the proposed framework,a game theory based offloading scheduling and load balancing scheme was developed by fully taking advantage of the computing and communication resources in the proposed framework.The simulation results demonstrate that the proposed scheme can effectively reduce end-to-end delay and offloading energy consumption,and also has good stability even when the network resources are limited.

Key words: hierarchical task offloading, mobile edge computing, device-to-device communication, cloud computing, game theory

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