Time and frequency transfer in an asynchronous TCP/IP over SDH-network utilizing passive listening

被引：4

作者：

Emardson, R. ^{[1
]}

Hedekvist, P. O. ^{[1
]}

Nilsson, M. ^{[1
]}

Ebenhag, S. C. ^{[1
]}

Jaldehag, K. ^{[1
]}

Jarlemark, P. ^{[1
]}

Johansson, J. ^{[1
]}

Pendrill, L. ^{[1
]}

Rieck, C. ^{[1
]}

Löthberg, P. ^{[1
]}

Nilsson, H. ^{[1
]}

机构：

[1] SP Swedish Natl Testing & Res Inst, Dept Measurement Technol Elect & Time, Boras, Sweden

来源：

2005 IEEE International Frequency Control Symposium and Exhibition | 2005年

关键词：

D O I：

10.1109/FREQ.2005.1574054

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A technique for time and frequency transfer over an asynchronous TCP/IP network is being developed by SP, Swedish National Testing and Research Institute together with STUPI. When implemented, users will be able to compare their clocks by connecting to the system. The technique is based on passive listening to existing data traffic in the network. Since the network is asynchronous, intermediate clocks are located and compared at each router. We use the frame alignment bytes of the SONET/SDH protocol as references in order to compare these clocks. As a test bed for the experiment, we will use the Swedish university Computer Network (SUNET). A preliminary assessment of the technique in a lab environment will be performed late 2005.

引用

页码：908 / 913

页数：6

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