基于流量整形的舰船电力监控网络实时性优化

Real-time performance optimization for warship power supervisory network based on traffic shaping

为满足基于以太网的舰船电力监控网络中各类数据流的实时性要求,考虑到实现难度和系统成本,应尽量在通信节点采用一般调度机制的前提下,在源节点通过对非实时数据流进行流量整形来优化舰船电力监控网络的实时性。从各类数据流的时延约束出发,反向利用网络演算理论,给出了满足实时性要求的源节点和交换机应采用的调度机制及流量整形参数的确定方法。满足了数据流的实时性要求,且充分利用了网络资源。以某舰船电站供电监控网络为例,探讨了不同时延约束条件下,监控网络中通信节点应采用的调度机制及非实时数据流的整形参数,实现了对舰船电力监控网络实时性的优化。

To meet the requirements of various data flows for real-time performance of warship power supervisory network based on Ethernet,it is better,with the consideration of implementation and cost,to shape the non-real-time data flows at source nodes and adopt general scheduling mechanisms at communication nodes.According to the delay restrictions of various data flows,the way to choose the scheduling mechanisms for both source nodes and switch and set the traffic shaping parameters is proposed based on the network calculus theory,which meets the requirements for real-time performance and takes full advantage of network resource.With a real warship power supervisory network as an example,the scheduling mechanisms of communication nodes and the traffic shaping parameters of non-real-time data flows are discussed under different delay restrictions for the real-time performance optimization of warship power supervisory network.