数字电视覆盖网前端系统PSI/SI指标与关键设备因果关系研究分析

Research on the Relationship Between PSI/SI and the Key Equipment in Headend System of DTV Coverage Network

本文从覆盖网运行、维护的角度结合相关标准分析了数字电视覆盖网前端PSI/SI生成机制和原因,通过分析明确这些关键PSI/SI指标是由哪些设备实现或决定的,从而帮助广播电视系统建设、运维人员准确发现问题节点,帮助广播电视设备开发、测试人员界定设备功能和性能指标边界。

This paper combines with the related standards to analyze the PSI/SI generation mechanism and the reason of headend system in digital television coverage network,including operation and maintenance for coverage network.Through the analysis,it is clear which devices are responsible for these key PSI/SI indicators,so as to help the constructors and operators accurately find the problem,and to help the equipment developer and tester define the boundary of equipment function and performance indicators.