Faulty TRX Identification

Bottleneck

• There is no particular Alarm for Faulty TRX• Identification of faulty TRX in E// BSC is

difficult as we cannot get TRX level stats therefore we have to identify it by observing degradation in multiple KPIs

• For the confirmation we have to block suspected TRX and monitor KPIs through RPMO

Affected KPIs

• Degraded TCH assignment success rate with out congestion

• Incoming HOSR degraded• SDCCH drop rate increased• Low SS Uplink drops increased• Bad Quality DL drops increased• In case of BCCH TRX, RACH will decrease while

availability will be same

Examples of Affected KPIs

Examples of Affected KPIs

Examples of Affected KPIs

Examples of Affected KPIs

Examples of Affected KPIs

Monitoring KPIs through RPMO

Monitoring KPIs through RPMO

Monitoring KPIs through RPMO

Monitoring KPIs through RPMO

Monitoring KPIs through RPMO

Monitoring KPIs through RPMO

THANK YOU