On synchronization techniques: performance and impact on time metrics monitoring

被引：8

作者：

Adami, D ^{[1
]}

Garroppo, RG ^{[1
]}

Giordano, S ^{[1
]}

Lucetti, S ^{[1
]}

机构：

[1] Univ Pisa, Dept Informat Engn, I-56126 Pisa, Italy

来源：

INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS | 2003年 / 16卷 / 04期

关键词：

QoS; time metrics; synchronization technique; NTP; GPS;

D O I：

10.1002/dac.587

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：

The paper presents an experimental comparison of device synchronization strategies to monitor quality of service (QoS) time metrics, such as the one-way delay and the delay variation. The compared strategies are based on global positioning system (GPS), public Internet network time protocol (NTP) servers and ad hoc GPS-based NTP servers with different treatments of the NTP traffic. The presented experimental results allow to quantitatively evaluate the level of performance achievable using each synchronization technique. Finally, considering a satellite test bed, we focus our analysis on two relevant aspects of time metrics monitoring: the impact of the synchronization errors on the metrics observation and the different values that can be measured when a metric is monitored at the application or data link level. Copyright (C) 2003 John Wiley Sons, Ltd.

引用

页码：273 / 290

页数：18