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基于分段排查法处理室分疑难故障的新思路

2023-08-21刘力荣

现代信息科技 2023年12期

摘  要:广西国际壮医医院出现室分疑难故障,初步的排查工作一度陷入困境。通过分析成因,有针对性地核查数据,检查宏站,调整参数,做对比测试,轮流堵直放站,分段排查天馈和设备,对该疑难故障进行深入研究,最终定位出POI故障是导致该疑难故障的主要原因。此外,通过进一步的研究可以获知,以RRU替换直放站可以提高室分稳定性,降低室分出现疑难故障的概率。上述排查方法是处理疑难室分故障的一种新思路。

关键词:室分疑难故障;对比测试;分段排查;POI故障;加强室分

中图分类号:TN929.5    文献标识码:A  文章编号:2096-4706(2023)12-0093-04

A New Way to Deal with Difficult Faults of Indoor Distribution Systems Based on

Sectional Troubleshooting Method

LIU Lirong

(Scene Comprehensive Maintenance Center, China Telecom Nanning Branch, Nanning  530012, China)

Abstract: The indoor distribution system of Guangxi International Zhuang Medical Hospital has a difficult fault, and the preliminary troubleshooting was once in trouble. Later, through analyzing the causes, pertinently checking the data, inspecting the macro base station, adjusting parameters, doing comparative tests, blocking repeaters in turn, and using sectional troubleshooting method for the Antenna-feeder and the equipment, this paper researches the difficult fault deeply. Finally, it is determined that the POI fault is the main cause of the difficult fault. In addition, through further research, it can be known that replacing repeaters with RRU can enhance the stability of the indoor distribution system and reduce the probability of difficult faults. The above troubleshooting method is a new way to deal with difficult faults of indoor distribution systems.

Keywords: difficult faults of indoor distribution system; comparative test; sectional troubleshooting method; POI fault; enhancing the indoor distribution system

0  引  言

室外宏站一般建于三管塔、單管塔、路灯塔、楼顶、山顶、天网杆等地方,虽然信号功率较大,但是覆盖面积广大,对大型办公楼、商场、住宅区、酒店、地下室、机场、汽车站等具有厚重墙壁、隔间较多的建筑物的内部穿透能力明显不足,信号衰减大,容易形成弱覆盖,引发用户投诉[1]。

室内分布系统(简称:室分)通过在建筑物内部安装信源设备及配件,在过道、房间、大厅、地下室等布放一系列吸顶天线,或者在多栋高层建筑的楼顶、架空层布放射灯天线互相对打,可以使建筑物内部的信号大大增强,弥补宏站覆盖的不足[2],因而,室内分布系统逐渐发展成为当下最主要的无线网络覆盖方式之一[3]。目前,室分主要由光缆、电源线、RRU、直放站近端、直放站远端、POI(或合路器)、天馈、天线、耦合器、功分器等部分组成[4],其结构复杂度远远大于宏站,所以,室分出现疑难故障的概率较大,维护的难度也更大[5]。……

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