面向应急物流的边缘计算架构设计

Design of edge computing architecture for emergency logistics

由于应急物流具有突发性和不可预见性,其外部环境往往复杂多变,导致网络通信经常处于极不稳定的状态。传统的云计算中心架构方式难以满足应急物流系统低时延、高能效等要求,而现有的边缘计算架构模型对应急物流场景中边缘设备可能面临的不确定风险考虑不足。本文通过分析应急物流对网络信息服务的要求,提出一种基于软件定义网络的边缘计算架构,依托网络虚拟化技术屏蔽底层网络硬件的差异,实现计算、存储与网络资源动态配置,并对通信中断、任务挂起与恢复和边缘设备接入等功能流程进行了设计。实验结果证明,该架构能够适应复杂多变的通信环境,为终端用户提供实时稳定可靠的服务。

Emergency logistics are unpredictable and their external environment is often complex and change‐able.Also,network communications tend to occur in an extremely unstable state.The traditional cloud computing center architecture encounters difficulties in meeting the requirements of low latency and energy efficiency,and the existing edge computing architecture model rarely takes into consideration of the uncertain risk associated with emergency logistics.By analyzing the requirements of emergency logistics for network information services,this paper proposes an edge computing architecture based on the Software Defined Network(SDN)principle,designs process mechanisms such as communication interruption,task hanging and recovery,and edge device access.En‐abled by network virtualization technology to block the differences of the underlying network hardware,the archi‐tecture can dynamically configure computing,storage and network resources,and it adapts well to the complex and changeable communications environment,thus providing real-time,stable and reliable services for terminal users.