gsm-to-umts training series 19_introduction to umts ran kpi_v1.0.pptx

HUAWEI TECHNOLOGIES CO., LTD.

www.huawei.com

HUAWEI Confidential

Internal

Introduction to LTE KPIs & Performance Counters with their

comparison with 3G

Huawei RNO Team

HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential

Page2

Introduction LTE

There are at least three major key drivers for LTE mobile

broadband networks:

Demand for higher data-rates

− increasing device capabilities, growing mobile data consumption

New spectrum allocation

Maintaining operator profitability while continued cost reduction

and competitiveness.


Page3

3G Long Term Evolution—4G

Year 2002 20042003 2005 2006 2007 2008 2009 2010 2011 2012 or later

3G-WCDMA in R99/R4

HSPA in R5/R6

LTE in R8

GPRS/EDGE

DL: ~384KbpsUL: ~384Kbps

DL: ~14.4MbpsUL: ~5.76Mbps

DL: ~42MbpsUL: ~11Mbps

DL: ~141MbpsUL: ~50Mbps

DL: ~144-360KbpsUL: ~144-360Kbps

HSPA+ in R7/R8~100 ms

~100 ms

~70 ms

~70 ms

~150 ms

~150 ms

~45 ms

~45 ms

~20ms

~20ms

• LTE is the next step in the evolution of 3GPP Radio Interfaces to deliver “Global Mobile Broadband”.


Page4

LTE Network Architecture E-UTRAN (Evolved Universal Terrestrial Radio Access Network)


Page5

LTE/SAE Network Architecture - cont.

SGSN

GPRS

UMTS

E-UTRAN

cdma2000

MME

HSS PCRF

Serving GW PDN GW

BTS BSC/PCU

NodeB RNC

eNodeB

S2a

S1-U

S6a

Gx

S5/8

Gb

Iu

S1-MMES12

S3

S4S11

SGi

S9S10

User planeControl plane

BTS

Internet

CorporateInternet

Operator ServiceNetwork

EPS (Evolved Packet System)

S6d

PDSNBSC

SAE

A10/A11


Page6

LTE Channel Bandwidths

LTE must support the international wireless market and regional spectrum

regulations and spectrum availability. To this end the specifications include

variable channel bandwidths selectable from 1.4 to 20 MHz, with subcarrier

spacing of 15 kHz.

Channel bandwidth BWChannel [MHz] 1.4 3 5 10 15 20

Transmission bandwidth

configuration NRB

6 15 25 50 75 100

NRB is the number of resource blocks


Accessibility

Retainability

Mobility

3G RAN KPI Counter


UMTS KPI

RRC connection setup success rate

RAB connection setup success rate

Call drop rate

Handover success rate

UMTS KPI List


Accessibility KPIs

Accessibility is the ability of a user to obtain the requested service from the system.

RRC connection and RAB setup are the main procedures of accessibility. These items can

be calculated per cell and per RNC, and the RNC level KPI is calculated by aggregating

all the cell counters that belong to the RNC.


RRC SR

RRC SR

The RRC setup procedure is trigged by different reasons which are divided into two classes:

First is related to service and second is related to other reasons.

This KPI can be used to evaluate the RRC setup success ratio for service causes in a cluster.


Troubleshooting RRC SR

Number of RRC Connection Rejects for Cell (UL Power Congestion)

VS.RRC.Rej.ULPower.Cong

Number of RRC Connection Rejects for Cell (DL Power Congestion)

VS.RRC.Rej.DLPower.Cong

Number of RRC Connection Rejects Due to Network Congestion for Cell Number of RRC Connection Rejects for Cell (UL Iub Bandwidth Congestion)

VS.RRC.Rej.ULIUBBand.Cong

Number of RRC Connection Rejects for Cell (DL Iub Bandwidth Congestion)

VS.RRC.Rej.DLIUBBand.Cong

Number of RRC Connection Rejects for Cell (UL CE Resource Congestion)

VS.RRC.Rej.ULCE.Cong

Number of RRC Connection Rejects for Cell (DL CE Resource Congestion)

VS.RRC.Rej.DLCE.Cong


Troubleshooting RRC SR Number of RRC Connection Rejects for Cell (Code Resource Congestion)

VS.RRC.Rej.Code.Cong

Number of RRC Connection Rejects Due to Timeout of RRC CONNECT SETUP COMPLETE for Cell

VS.RRC.FailConnEstab.NoReply

Number of RRC Connection Rejects Due to Radio Link Setup Failure for Cell

VS.RRC.Rej.RL.Fail

Number of RRC Connection Rejects for Cell (Transmission Setup Failure on Iub Interface )

VS.RRC.Rej.TNL.Fail


RAB SR

AMR RAB SR

This KPI can be used to evaluate the RAB setup success ratio of the AMR service in a cluster.

This KPI cannot be used to evaluate the AMR call setup success ratio unless the related RRC

procedures of all AMR services are successful.

CS RAB SR

This KPI can be used to evaluate the RAB setup success ratio of all CS services in a cluster.


RAB SR

PS RAB SR

This KPI can be used to evaluate the RAB setup success ratio of all PS services.

HSDPA RAB SR

This KPI can be used to evaluate the RAB setup success ratio of the PS service carried by HSDPA.


RAB SR

HSUPA RAB SR

This KPI can be used to evaluate the RAB setup success ratio of the HSUPA service in a RNC

or a cluster.


Troubleshooting RAB SR

Number of Failed CS RAB Establishments for Cell (Radio Network Layer Cause)

VS.RAB.FailEstabCS.RNL

Number of Failed CS RAB Establishments for Cell (Transmission Network Layer Cause)

VS.RAB.FailEstabCS.TNL

Number of Failed CS RAB Establishments for Cell (DL Iub Bandwidth Congestion)

VS.RAB.FailEstabCS.DLIUBBand.Cong

Number of Failed CS RAB Establishments for Cell (UL Iub Bandwidth Congestion)

VS.RAB.FailEstabCS.ULIUBBand.Cong

Number of Failed CS RAB Establishments for Cell (UL CE Congestion)

VS.RAB.FailEstabCS.ULCE.Cong

Number of Failed CS RAB Establishments for Cell (DL CE Congestion)

VS.RAB.FailEstabCS.DLCE.Cong

Number of Failed CS RAB Establishments for Cell (Code Congestion)

VS.RAB.FailEstabCS.Code.Cong



Number of Failed CS RAB Establishments for Cell (UL Power Congestion)

VS.RAB.FailEstabCS.ULPower.Cong

Number of Failed CS RAB Establishments for Cell (DL Power Congestion)

VS.RAB.FailEstabCS.DLPower.Cong

Number of Failed CS RAB Establishments for Cell (Invalid configuration of UE during the RB setup procedure)

VS.RAB.FailEstabCS.RBIncCfg

Number of Failed CS RAB Establishments for Cell (Configuration unsupported of UE during the RB setup procedure)

VS.RAB.FailEstabCS.RBCfgUnsup

Number of Failed CS RAB Establishments for Cell (No reply of UE during the RB setup procedure)

VS.RAB.FailEstabCS.UuNoReply



Number of Failed CS RAB Establishments for Cell (Physical channel failure of UE during the RB setup procedure)

VS.RAB.FailEstabCS.PhyChFail

Number of Failed CS RAB Establishments for cell (Radio Link Configuration Failure)

VS.RAB.FailEstabCS.IubFail

Number of Failed CS RAB Establishments for cell (Uu Interface Configuration Failure)

VS.RAB.FailEstabCS.UuFail

Number of Failed CS RAB Establishments for Cell (Unsupported Capabilities)

VS.RAB.FailEstabCS.Unsp

Same for PS.


Retainability KPIs

Retainability is defined as the ability of a user to retain its requested service for the

desired duration once connected. These items can be calculated per cell and per RNC.

The RNC level KPIs can be calculated by aggregating all the cell counters and Iur

counters.


CDR

AMR CDR

This KPI can be used to evaluate the call drop ratio of the AMR service in one RNC or a cluster.

The call drop occurs due to RNC abnormal release trigged by RAB RELEASE REQUEST or

IU RELEASE REQUEST messages.

CS CDR

This KPI can be used to evaluate the call drop ratio of the CS service.


CDR

PS CDR

This KPI can be used to evaluate the call drop ratio of all PS services in one RNC or a cluster.

The call drop occurs due to RNC abnormal release trigged by RAB RELEASE REQUEST or

IU RELEASE REQUEST messages.

HSDPA CDR

This KPI can be used to evaluate the call drop ratio of the PS service carried by HSDPA.


CDR

HSUPA CDR

This KPI can be used to evaluate the call drop ratio of the PS service carried by HSUPA.


CDR

Number of CS RABs Abnormally Released Due to RF for Cell (UL Synchronization Fail)

VS.RAB.AbnormRel.CS.RF.ULSync

Number of CS RABs Abnormally Released Due to RF for Cell (Failure in the Radio Interface Procedure)

VS.RAB.AbnormRel.CS.RF.UuNoReply

Number of CS RAB Release Requests for Cell (O&M Intervention)

VS.RAB.AbnormRel.CS.OM

Number of CS RAB Release Attempts for Cell (RAB Preemption)

VS.RAB.AbnormRel.CS.Preempt

Number of CS RABs Abnormally Released for Cell (Signaling RLC Reset)

VS.RAB.AbnormRel.CS.RF.SRBReset

Number of CS RABs Abnormally Released for Cell (Iu Interface AAL2 Link Failure)

VS.RAB.AbnormRel.CS.IuAAL2

Same for PS.


Mobility KPIs

Mobility KPIs are used to monitoring the successful ratio for several kinds of handover

features or service mode changing in difference scenarios.


HO

SHO SR

This KPI can be used to evaluate the soft handover success ratio in a cluster, including softer

handover.

IRAT HO SR

This KPI can be used to evaluate the CS inter-RAT handover out success ratio.


HO

PS IRAT HO SR

This KPI can be used to evaluate the PS inter-RAT handover out success ratio in one RNC or a

cluster.


Mobility

Number of Failed Radio Link Additions in Soft Handover for Cell (Configuration Unsupported)

VS.SHO.FailRLAdd.CfgUnsupp

Number of Failed Radio Link Additions in Soft Handover for Cell (Incompatible Simultaneous Reconfiguration)

VS.SHO.FailRLAdd.ISR

Number of Failed Radio Link Additions in Soft Handover for Cell (Invalid Configuration)

VS.SHO.FailRLAdd.InvCfg

Number of Failed Radio Link Additions in Soft Handover due to UE No Response for Cell

VS.SHO.FailRLAdd.NoReply

Number of Failed Soft Handovers Between Neighboring Cells Due to Waiting Active Set Update Response Timeout

VS.SHO.FailASU.NoReply.NCell


Mobility

Number of Failed CS Outgoing Inter-RAT Handovers for Cell (Configuration Unsupported)

IRATHO.FailOutCS.CfgUnsupp

Number of Failed CS Outgoing Inter-RAT Handovers for Cell (Physical Channel Failure)

IRATHO.FailOutCS.PhyChFail

Number of Times that the Timer Waiting for Iu Release Command Expires in CS Outgoing Inter-RAT Handover for Cell

VS.IRATHO.FailOutCS.NoReply

Number of Abnormally Terminated CS Outgoing Inter-RAT Handovers for Cell

VS.IRATHO.FailOutCS.Abort

Number of Failed CS Inter-RAT HandoversBetween Neighboring Cells Due to UE Fault

VS.IRATHO.FailOutCS.UEFail.GCell


LTE RAN KPIs

Accessibility KPIs

Retainability KPIs

Mobility KPIs


UMTS KPI

RRC connection setup success rate

RAB connection setup success rate

Call drop rate

Handover success rate

LTE KPI List


Accessibility KPIs

Accessibility is the ability of a user to obtain the requested service from the system.

RRC connection and RAB setup are the main procedures of accessibility. These items can

be calculated per cell and per RNC, and the RNC level KPI is calculated by aggregating

all the cell counters that belong to the RNC.


Retainability KPIs

Retainability is defined as the ability of a user to retain its requested service for the

desired duration once connected. These items can be calculated per cell and per RNC.

The RNC level KPIs can be calculated by aggregating all the cell counters and Iur

counters.


Mobility KPIs

Mobility KPIs are used to monitoring the successful ratio for several kinds of handover

features or service mode changing in difference scenarios.


Conclusion

Understand the KPI

Thank You

www.huawei.com

gsm-to-umts training series 19_introduction to umts ran kpi_v1.0.pptx

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