基于SpaceFibre光网络的即插即用技术及性能分析

Plug-and-Play Network and Performance Analysis Based on SpaceFibre

摘要:

SpaceFibre光总线广泛应用于航天领域。SpaceFibre光网络即插即用(SpFi-PnP)技术便于星载设备的在轨管理,能实现星载网络的可测可控。在大型星载总线网络中,采用宽度遍历算法发现网络设备,通过设计SpaceFibre光网络的网络管理器,实现了总线网络的即插即用。实验证明,网络管理器能稳定发现设备信息并监控路由器网络中节点设备的实时状态,通过OPNET仿真建模分析基于SpaceFibre总线协议的光网络端到端延时来评估在网络中使用宽度遍历算法的网络性能,并在源模块节点采用整包和分包两种机制发送数据流。结果表明分包机制效果更佳,探究得到分包组数为10时网络延时性能最优。

Abstract:

Due to its characteristics of long transmitting distance and high speed, SpaceFibre is widely used in aerospace applications, and its plug-and-play technology (SpFi-PnP) facilitates the on-board management of on-board devices and enables the measurement and control of on-board networks. In large-scale space-borne bus network, width traversal algorithm was applied to search the network devices, and the network manager of SpaceFibre was designed to realize plug and play of the bus network in real time. Experiments show that the network manager can detect the equipments and monitor the real-time information of the node device in the router network. OPNET modeling analysis was made on the end-to-end delay of the SpaceFibre optic network, so as to evaluate the performance of the network using width traversal algorithm. Data streams were sent using the whole packet and sub-packet mechanism at the source node module. The results show that the sub-packet mechanism works better, and the best network delay realizes when the number of packet group is 10.