摘要
说明并分析时间触发以太网(TTE,Time-Triggered-Ethernet)的时间同步机制,对于采用时间触发机制调度的周期性任务,提出生成周期调度时刻表的方法,利用方法可以根据离线生成的调度时刻表进行调度,也可以动态地将通信任务加入或撤出调度时刻表,调度时刻表的设计避免时间触发的数据包争用物理链路。构造相应的网络通信场景,通过生成调度时刻表的算例与仿真结果进行了验证。
With the comprehending and analyzing the time synchronization mechanism in Time- Triggered - Ethernet （TFE） networks, a method is presented for time - triggered periodic communication tasks to generate periodic scheduling timetables. This method can not only provide off- line generated timetables for scheduling, but also support on- line modification for dynamical task insertion and withdrawal. And well-designed timetables can be used for packet scheduling and routing without congestion in physical links. Constructed a corresponding network communication scenario, by generating an example of schedule timetable and simulation results to verify the method.
出处
《航空计算技术》
2011年第4期122-127,共6页
Aeronautical Computing Technique
基金
国家自然科学基金民航联合基金项目资助(60879024)
国家自然科学基金项目资助(61073012)
关键词
实时系统
以太网
时间触发
时钟同步
周期调度时刻表
real- time system
ethernet
time- triggered
time synchronization
periodic scheduling timetable
