卫星协同的天地一体化边缘计算网络架构  

Architecture of Cooperative Satellite-Terrestrial Integrated Edge Computing Networks

作　　者：张馨元 刘江[1,2] 张然 黄韬 ZHANG Xinyuan;LIU Jiang;ZHANG Ran;HUANG Tao(State Key Laboratory of Networking and Switching Technology,Beijing University of Posts and Telecommunications,Beijing 100876,China;Purple Mountain Laboratory,Nanjing 211111,China)

机构地区：[1]北京邮电大学网络与交换国家重点实验室,北京100876 [2]网络通信与安全紫金山实验室,江苏南京211111

出　　处：《无线电通信技术》2022年第3期394-400,共7页Radio Communications Technology

基　　金：国家重点研发计划(2020YFB1807903)。

摘　　要：近年来,天地一体化的边缘计算网络受到了产业界和学术界的广泛关注。以往研究中,卫星网络作为地面数据中心的中继,长链路传播时延导致任务响应时间较大;由单颗卫星独自处理计算任务时,因为卫星资源有限而造成任务接受率低,将无法处理的任务回传给地面数据中心还会造成卫星下行带宽浪费等问题。基于此,考虑卫星协同进行星上计算,提出了卫星协同的天地一体化边缘计算网络架构。首先设计了卫星边缘计算节点的硬件平台架构;其次提出了基于资源感知的卫星边缘计算管控架构;最后设计了天地一体化边缘计算网络协同计算机制,对卫星协同计算中协同计算域生成、任务规划、故障应对三个重点问题进行分析,并给出了相应的解决方法。Industry and academia have been widely concerned with satellite-terrestrial integrated edge computing networks in recent years.In previous works,satellite is regarded as a relay for the data center on the ground or as a singleton to process tasks with limited resources,which results in low acceptance of tasks,high processing latency,and waste of downlink bandwidth.In this work,we take satellite cooperative in-orbit computing into account and propose the architecture and critical issues of cooperative satellite-terrestrial integrated edge computing networks.Firstly,we design the hardware platform of satellite edge computing nodes.Then,a management and control architecture based on resource awareness is proposed.Finally,we create the collaborative computing scheme of satellite-terrestrial integrated edge computing networks.Moreover,we analyze critical problems in generation of cooperative computing clusters,task scheduling,and fault recovery,and corresponding solutions are given.

关 键 词：天地一体化网络 卫星网络 边缘计算 

分 类 号：TN927[电子电信—通信与信息系统]