214726992 zte counter optimisation rrc fail counter analysis

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ZTE WCDMA RRC Fail Counter Optimisation : Clive Mangwiro Counter Name

Sub Counter C310080064

C310080063

Number of failed RRC connection preparation, NodeB C310080065

C310080067

C310080066

Number of failed RRC connection preparation, Due To Admission Control

C310080069

Number of failed RRC connection preparation, Due To UL Interfere

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C310080077

C310080076

Number of failed RRC connection preparation, Due To Trans

C310080078

C310080079

C310086446

Number of failed RRC connection preparation, Due To Rl setup expiry. Number of failed RRC connection preparation, Due To Codes Number of failed RRC connection preparation, Due To DL POWER Shortage

C310080071 Number of failed RRC connection preparation, Due To RNC Internal Reasons

Counter explanation

C310080068

C310080070

C310080072

Name

Number of failed RRC connection preparation,Due To Rl setup FAIL Rl setup FAIL

Number of failed RRC connection preparation,Due To C310086447 CN

Number of failed RRC connection preparation, Due To UL CE Shortage Number of failed RRC connection preparation, Due To DL CE Shortage / Number of failed RRC connection preparation,Due To Iub RlSetup TbFail Number of failed RRC connection preparation,Due To Iub RlSetup TbCacFail Number of failed RRC connection preparation,Due To Iub UP Fail Number of failed RRC connection preparation, Due To CN Overload

Cause & Solution 1. CE shortage;need CE expansion 2. Check alarm for more information

Due To Rl setup expiry

Transmission problem

CODE Shortage

Code shortage, need traffic balance, add new cell, second carrier

DL POWER Shortage

Power shortage, need traffic balance, add new cell, second carrier

UL Interference

Check the reason for RTWP increase, follow the interference shooting document

UL CE

CE shortage;need CE expansion

DL CE

CE shortage;need CE expansion

RL setup fail, Due to RNC

1. RCB OVERLOAD 2. DSP on RUB not config IP address

Iub Transmission Fail

Transmission problem

Iub Transmission access Fail

Transmission problem

IUB Use Plane Fail

Transmission problem

CN OVERLOAD

CN OVERLOAD


C310080167

Number of failed RRC connection access, due to Radio Interface Synch.

C310080168

Number of failed RRC connection access, due to timeout of Uu interface

C310080169

Number of failed RRC connection access, due to RNC Inner Reasons

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CAUSE: DSP Failed Other hardware problem RRC lodebalance strategy Radio interface failure has Timer for RL restore is to short Have Sent RRC Connection been attributed to some Setup, hardware failures(in sympathy SOLUTION: change hardware But do not received RRC with traffic as what happened Connection Setup Complete or to check if it is the problem at site selbone Park (BPC), Radio Link Restore 1. change the site CMP Nguboyenja (RRU)) 2. change resource shelf priority if it worked, need upgrade or repalce

/

Have sent RRC Connection Setup, but do not receiced RRC Connection Setup Complete, but received Radio Link Restore

/

Have sent RRC Connection Setup,but do not received RRC N/A Connection Setup Complete, because of RNC

N/A

Meanwhile, UU interface may require some downtilt adjustments and that is what I will be doing for those cells with more than 100 RRC setup blocked due to UU interfac


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