摘要
将时间触发协议增加到采用星型拓扑结构的以太网业务上,且保持完全兼容IEEE802.3标准,可解决空间有效载荷使用标准以太网通信遇到的实时性、确定性和可靠性问题。时间触发以太网基于全局基准时间,实时数据传输遵循严格的时序,支持时间和事件触发的两种通信过程。时间触发通道适合同步或周期性实时消息的传输,而事件触发通道适用于偶发或非周期性消息的传输。设计了空间应用以太网的拓扑结构和协议栈,介绍了系统通信的过程,进行了时间触发协议的研究,并对同步性能和网络性能进行了仿真验证。该以太网在保证可靠性、安全性的同时,增强了网络的灵活性,提高了网络利用率。
Ethernet for space utilization added time-triggered protocol to a star topology network that was used for Ethernet service;moreover it was fully compatible with the standard IEEE802.3.This Ethernet can effectively solve the problems of real-time,uncertainty and reliability on communications for payload communicating through standard Ethernet.Time-triggered Ethernet was based on global reference time,and the real-time data transmission kept strict timing,supported time and event-triggered communication simultaneously.Time-triggered channel in this Ethernet was suitable for real-time synchronous or periodic message transmission,while event-triggered channel was suitable for sporadic or aperiodic message transmission.To prove the result that Ethernet can ensure the network reliability and security,enhance flexibility,and can greatly improve network availability,many work have to be done.For example,it designed an Ethernet topology and protocol stack for space utilization,described system communication process,studied time-triggered protocol,and simulated synchronization and network performance.
出处
《国防科技大学学报》
EI
CAS
CSCD
北大核心
2014年第5期117-123,共7页
Journal of National University of Defense Technology
基金
国家部委资助项目
关键词
时间触发
以太网
空间应用
实时性
确定性
time-triggered
Ethernet
space utilization
real-time
deterministic
