机载多跳波分复用网络时间确定性分析方法  

A Time-Deterministic Analysis Method for Airborne Multi-Hop WDM Networks

作　　者：王月星[1] 李峭[2] 周杨[2] 

机构地区：[1]中国航空工业集团公司成都飞机设计研究所,成都610041 [2]北京航空航天大学,北京100191

出　　处：《电光与控制》2015年第3期58-63,共6页Electronics Optics & Control

基　　金：国家自然科学基金(60879024)

摘　　要：波分复用技术有望应用于航空电子系统的综合化互连,特别是传感器前端处理部分的实时网络互连。根据机载多跳波分复用网络的关键部件波长路由器的结构,对实时通信流量特性和优先级排队的服务特性进行建模,给出突发度、服务时延等参数指标的计算方法,并在高优先级时间触发流量的压力下,提出了在机载多跳波分复用网络中事件触发流量的最坏情况下,端到端延迟的网络演算方法;使用该方法计算得到的结果可以作为机载波分复用网络时间确定性分析的依据。将最坏情况下的分析结果与软件仿真结果相对比,发现两者变化规律相符,验证了该方法的有效性。Wave Division Multiplexing（ WDM） technologies may be adopted as integrated interconnection in avionics systems, especially as real-time network in their sensor front-end signal processing. In term of the structure of wave-length router, which is a key part in airborne WDM network, the real-time communication traffic characteristics and priority-queuing were modeled with corresponding methods to calculate parameter features such as burstiness and service latency. A kind of network calculus method for computing eventtriggered traffic flows ’ end-to-end delays in the worst case was presented under the pressure of higher priority-queuing time-triggered messages. The calculation result obtained could be used in analysis of the time-deterministic performance in airborne multi-hop WDM networks. It was found that the changing of the worst case analysis results was coincided with that of the software simulation result through comparison,which proves the effectiveness of the method.

关 键 词：波分复用网络 航空电子 实时系统 流量特性 网络演算 

分 类 号：V271.4[航空宇航科学与技术—飞行器设计] TP393.03[自动化与计算机技术—计算机应用技术]