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ID:16304885
大小:327.50 KB
页数:5页
时间:2018-08-09
《某小区ue发射功率异常引起rtwp异常问题案例》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、DocumentTitleSecurityLevel:某小区UE发射功率异常引起RTWP异常问题案例问题现象:某小区的HSUPA速率上不去,不到100kbit/S。问题分析:1,分析话统,发现该小区RTWP正常CellIdTimeVS.MeanRTWPVS.MaxRTWPVS.MinRTWP113332009-04-0523:30-107.068816-105.9-107.5113332009-04-060:00-107.637187-106.7-107.9113332009-04-060:30-107.722389
2、-106.7-107.9113332009-04-061:00-107.803393-107-107.9113332009-04-061:30-107.798833-106.9-107.9113332009-04-062:00-107.841546-107.1-108113332009-04-062:30-107.795889-107.2-108113332009-04-063:00-107.855586-105.1-108113332009-04-063:30-107.716073-94.8-10811333200
3、9-04-064:00-107.771984-107-107.9113332009-04-064:30-107.813285-103.6-107.9113332009-04-065:00-107.848778-106.7-107.9113332009-04-065:30-107.784761-107.4-107.9113332009-04-066:00-107.750973-106.9-107.9113332009-04-066:30-107.690712-106.7-107.8113332009-04-067:00
4、-107.587827-106.8-107.8113332009-04-067:30-107.014842-105.9-107.8113332009-04-068:00-107.092111-105.7-107.7113332009-04-068:30-106.603893-104.8-107.5113332009-04-069:00-106.186604-100.6-107.3113332009-04-069:30-106.065258-104.7-107.2113332009-04-0610:00-106.479
5、7-104.9-107.7113332009-04-0610:30-106.446526-104.9-107.3113332009-04-0611:00-106.478488-102.7-107.5113332009-04-0611:30-106.085548-104.6-107.3113332009-04-0612:00-106.635278-100.5-107.6113332009-04-0612:30-106.751891-105.3-107.5113332009-04-0613:00-107.001501-1
6、05.5-107.8113332009-04-0613:30-107.086826-105.9-107.62,跟踪CDT发现,小区RTWP刚开始都正常,UE刚接入时RTWP也正常,但开始进行HSUPA业务时RTWP就异常升高。同时UE发射功率也是接入前正常,开始HSUPA业务后上升较大。从话统来看该小区RTWP正常,故怀疑是UE发射功率过高导致该小区进行业务时RTWP异常。2021-09-15HUAWEIConfidentialPage5,Total5DocumentTitleSecurityLevel:图表1RTW
7、PCDT跟踪2021-09-15HUAWEIConfidentialPage5,Total5DocumentTitleSecurityLevel:图表2UE发射功率CDT跟踪3,UE进行业务时发射功率异常,因此怀疑功控出现问题,首先检查各业务的SIRtarget,发现SIRtarget正常。4,进一步怀疑设备解调性能异常,将分别定位BBU和RRU是否有问题。设备组网如下图所示,将通过排除法来定位问题。2021-09-15HUAWEIConfidentialPage5,Total5DocumentTitleSecuri
8、tyLevel:5,首先将1、3小区CPRI光纤对调看看现象是否跟着RRU走还是跟BBU端口相关。对调后发现问题与BBU端口无关,应该在RRU到天线这一段上。6,由于馈线对调比较困难,因此直接将1、3小区的RRU对调。对调后发现问题消失,两个小区都正常,问题解决。问题结论:联想到以前由于天馈接头没做好导致RTWP异常的案例,云亭花园1小区的问题
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