| 引用本文: | 邱爱华,张涛,顾逸东.面向空间应用的时间触发以太网.[J].国防科技大学学报,2014,36(5):117-123.[点击复制] |
| QIU Aihua,ZHANG Tao,GU Yidong.Time-triggered Ethernet for space utilization[J].Journal of National University of Defense Technology,2014,36(5):117-123[点击复制] |
|
| |
|
|
| 本文已被：浏览 9464次 下载 7370次 |
| 面向空间应用的时间触发以太网 |
| 邱爱华1,2, 张涛1, 顾逸东1 |
|
(1.中国科学院 空间科学与应用总体部，北京 100094;2.中国科学院大学，北京 100049)
|
| 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。 |
| 关键词: 时间触发 以太网 空间应用 实时性 确定性 |
| DOI：10.11887/j.cn.201405020 |
| 投稿日期：2014-03-22 |
| 基金项目:国家部委资助项目 |
|
| Time-triggered Ethernet for space utilization |
| QIU Aihua1,2, ZHANG Tao1, GU Yidong1 |
|
(1. General Establishment of Space Science and Application, Chinese Academy of Sciences, Beijing 100094, China;2.
2. University of Chinese Academy of Sciences, Beijing 100049, China)
|
| Abstract: |
| 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. |
| Keywords: time-triggered Ethernet space utilization real-time deterministic |
|
|
|
|
|
