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HUAWEI TECHNOLOGIES Co., Ltd. www.huawei.com HUAWEI Confidential Security Level: confidential Huawei eRAN KPI Introduction (eRAN 6.0)

151470188 Huawei ERAN6 0 KPI Introduction

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Page 1: 151470188 Huawei ERAN6 0 KPI Introduction

HUAWEI TECHNOLOGIES Co., Ltd.

www.huawei.com

HUAWEI Confidential

Security Level: confidential

Huawei eRAN KPI

Introduction

(eRAN 6.0)

Page 2: 151470188 Huawei ERAN6 0 KPI Introduction

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Agenda

KPI System Overview

KPI Detail Description

Recommended KPIs

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KPI System Overview

LTE KPIs

Accessability Retainability Integrity Mobility Latency

• RRC

SETUP SR

• ERAB

Setup SR

(VoIP/ALL)

• Call Setup

SR

(VoIP/ALL)

• Call Drop

Rate

(VoIP/ALL)

• Call Setup

Complete

Rate

(VoIP/ALL)

• Service

UL/DL

Throughput

• HHO SR

( Intra/Inter

Frequency)

• HO in SR

• Inter-RAT

HHO SR

• Access

Latency

• Service

Latency

• Interrupt

Latency

• Radio

Network

Unavailabil

ity Rate

Availability

• Cell UL/DL

Traffic

Volume

• Radio

Bearer

Number

Utilization

Radio Network KPI :

Focus on the radio network performance

Service KPI :

Focus on the user experience

• UL/DL

RB

Utility

Rate

Traffic

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KPI Attained Approach

In general, there are two approaches to define/attain KPIs:

• By statistics /Counter: Most of KPIs are attained by this approach, such as RRC Success Rate, HHO Success Rate…

• By drive test / Stationary test: Some KPIs should be attained by drive test, such as Attach Latency, Handover latency…

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Measurement Object for Counter

Measurement Object

Measurement

Unit 1

Measurement

Unit 2

……

Counter 1 Counter 2 Counter 3 Counter 4 Counter 5 Counter 6 Counter 7

Measurement

Family 1 ……

Measurement

Family 2

…… ……

Each measurement result is related to a specific measurement object.

Counters are organized by Measurement Unit/Family.

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Collection methods (TS 32.403)

CC (Cumulative Counter), for example, Attempted RRC connection establishments;

GAUGE (dynamic variable), used when data being measured can vary up or down

during the period of measurement, for example, Maximum E-RAB Setup time;

DER (Discrete Event Registration), when data related to a particular event are captured

every nth event is registered, where n can be 1 or larger, for example, Cell Unavailable

Time, Mean E-RAB Setup time;

SI (Status Inspection), for example, Average Number of simultaneous E-RABs;

Reporting period

The measurement results are collected in a pre-defined reporting period, and this

reporting period, in general, is configurable at EMS, for example, 15mins, 60mins…

Collection Method and Reporting Period

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Agenda

KPI System Overview

KPI Detail Description • Accessibility

• Retainability

• Mobility

• Availability

• Utilization

• Traffic

• Integrity

• Latency

Recommended KPIs

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Accessibility (1) – RRC Setup Success Rate

RRC Setup Success Rate (service)

The RRC setup procedure is trigged by different reasons as identified by the establishmentCause

field in the RRCConnctionRequest message: emergency, highPriorityAccess, mt-Access, mo-

Signalling, mo-Data, delayTolerantAccess-v1020.

The UE sets the establishmentCause and received by eNodeB. Causes except mo-Signalling

are categorized as service related ones, and the cause of mo-Signalling is categorized as signal

related ones.

This KPI evaluates the RRC setup success rate with service related causes in a cell or cluster.

%100_

__ Service

service

service

AttemptConnectionRRC

SuccessConnectionRRCSSRRRC

RRC Setup Success Rate (Signal)

This KPI evaluates the RRC setup success rate with signal

related causes (mo-Signalling) in a cell or cluster.

%100_

__ Signal

Signal

Signal

AttemptConnectionRRC

SuccessConnectionRRCSSRRRC

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Accessibility (2) – Counter Mapping for RRC SSR

L.RRC.ConnReq.Att…

L.RRC.ConnReq.Succ …

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Accessibility (3) – QCI Definition

LTE-SAE QoS Class Identifier

There are 9 QCIs defined in 3GPP TS 23.203. Each of QCI has its QoS requirements, and

each E-RAB will has the attribute of QCI.

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Accessibility (4) – ERAB Setup Success Rate

VoIP ERAB Setup Success Rate

This KPI can be used to evaluate the ERAB setup

success rate of VoIP service (QCI 1 service) in a cell

or cluster.

_ __ _ 100%

_ _

VoIP ERAB SetupSuccessVoIP ERAB SSR

VoIP ERAB SetupAttempt

ERAB Setup Success Rate (All)

This KPI can be used to evaluate the ERAB setup

success rate of all services including the VoIP

service in a cell or a cluster.

__ ( ) 100%

_

ERAB SetupSuccessERAB SSR ALL

ERAB SetupAttempt

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Accessibility (5) – Counter Mapping for ERAB SSR

ERAB Setup Attempt Counters

ERAB Setup Success Counters

ERAB Setup Attempt Counters

ERAB Setup Success Counters

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Accessibility (6) – Call Setup Success Rate

VoIP Call Setup Success Rate (VoIP CSSR)

This KPI evaluates the success rate of the whole setup procedure for VoIP service

(QCI 1 service) in a cell or cluster, which mainly includes three phases : RRC setup

phase, S1 Signaling connection establishment phase and VoIP E-RAB setup phase:

_ 1 _ __ * * 100%

_ 1 _ _

Service

Service

RRC ConnectionSuccess S SIGConnectionEstablishSuccess VoIP ERAB SetupSuccessVoIP CSSR

RRC ConnectionAttempt S SIGConnectionEstablishAttempt VoIP ERAB SetupAttempt

Call Setup Success Rate (ALL)

This KPI can be used to evaluate the call setup success rate of all services including the

VoIP service in a cell or a cluster. This KPI mainly includes three phases : RRC setup

phase, S1 Signaling connection establishment phase and service E-RAB setup phase:

_ 1 _( ) * * 100%

_ 1 _

Service

Service

RRC ConnectionSuccess S SIGConnectionEstablishSuccess ERAB SetupSuccessCSSR ALL

RRC ConnectionAttempt S SIGConnectionEstablishAttempt ERAB SetupAttempt

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Accessibility (7) – Counter Mapping for CSSR

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Retainability (1) – Call Drop Rate

VoIP Call Drop Rate

This KPI can be used to evaluate the call drop rate of VoIP service (QCI 1 service) in a cell or cluster, the

call drops happen when eNode initiate active ERAB (with data in buffer) release process by E-RAB

Release Indication or UE Context Release Request message with Cause field with abnormal reasons (the

cause other than : Normal Release, Detach,User Inactivity, cs fallback triggered, UE Not Available For PS

Service,or Inter-RAT redirection), and all of the other E-RAB releases are consider as normal E-RAB

release.

Call Drop Rate(ALL)

This KPI can be used to evaluate the call drop rate of all

services in a cell or a cluster, including VoIP service.

%100Re__

Re___

leaseERABVoIP

leaseAbnormalERABVoIPCDRVoIP

_ Re( ) 100%

_ Re

ERAB Abnormal leaseCDR ALL

ERAB lease

Call Drop Rate(Always Online)

This KPI can be used to evaluate the call drop rate of all the services, including the VoIP services, when

the always online state is active. In always online state, the E-RAB number of UE entering the un-

synchronous state from synchronous state will be considered for the KPI calculating.

_ 100%Re

ERABAbnormalReleaseOfAlwaysOnlineAlwaysOnline CDR

ERAB leaseOfAlwaysOnline

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Retainability (2) – Counter Mapping for Call Drop Rate

Normal and Abnormal release

Counters based on the cause

Normal and Abnormal release

Counters based on the cause

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Retainability (3) - Call Setup Complete Rate

_ 1 _ _ Re( ) * * * 100%

_ 1 _ _ Re

Service

Service

RRC ConnectionSuccess S SIGConnectionEstablishSuccess ERAB SetupSuccess ERAB Normal leaseCSTR ALL

RRC ConnectionAttempt S SIGConnectionEstablishAttempt ERAB SetupAttempt ERAB lease

VoIP Call Setup Complete Rate (VoIP CSTR)

This KPI evaluates the call Setup Complete Rate for VoIP service (QCI 1 service) in a cell or

cluster, which means the rate of the VoIP service can be normally terminated once user do

the attempt to setup the service. And it can include 4 phases: RRC setup phase, S1

Signaling connection establishment phase, VoIP E-RAB setup phase and VoIP service E-

RAB release phase;

Call Setup Complete Rate (ALL)

The similar as upper KPI, this KPI will evaluate the success rate in totally for 4 phases: RRC

setup phase, S1 Signaling connection establishment phase, service E-RAB setup phase and

service E-RAB release phase;

_ 1 _ _ _ _ Re_ * * *

_ 1 _ _

Service

Service

RRC ConnectionSuccess S SIGConnectionEstablishSuccess VoIP ERAB SetupSuccess VoIP ERAB Normal leaseVoIP CSTR

RRC ConnectionAttempt S SIGConnectionEstablishAttempt VoIP ERAB SetupAttempt Vo 100%

_ _ ReIP ERAB lease

Call Setup Complete Rate (Always Online)

The similar as upper KPI, this KPI will evaluate the success rate in totally for 4 phases: RRC

setup phase, S1 Signaling connection establishment phase, service E-RAB setup phase and

service E-RAB release phase (when the always online state is active);

_ 1 _( ) * * *

_ 1 _

Service

Service

RRC ConnectionSuccess S SIGConnectionEstablishSuccess ERAB SetupSuccess ERABAbnormalReleaseOfAlwayCSTR AlwaysOnline

RRC ConnectionAttempt S SIGConnectionEstablishAttempt ERAB SetupAttempt 100%

Re

sOnline

ERAB leaseOfAlwaysOnline

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Retainability (4) - Counter Mapping for CSCR

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Mobility (1) – Intra-LTE Handover (Out) Success Rate

Intra-frequency Handover Out Success Rate

This KPI can be used to evaluate the intra-frequency

handover out success rate in a cell or cluster.

%100_

___

ptHOOutAttemIntraF

ssHOOutSucceIntraFSRHOOutIntraF

Inter-frequency Handover Out Success Rate This KPI can be used to evaluate the inter-frequency

handover out success rate in a cell or cluster.

%100_

___

ptHOOutAttemInterF

ssHOOutSucceInterFSRHOOutInterF

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Mobility (2) – Counter Mapping for Intra-LTE HO SR

Handover Attempt Counters

Handover Success Counters

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Mobility (3) - Intra-LTE Handover In Success Rate

Handover In Success Rate

This KPI can be used to evaluate the handover in

success rate in a cell or cluster.

%100_ tHOInAttemp

sHOInSuccesSRHOIn

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Mobility (4) - Counter Mapping for Intra-LTE HO In SR

HO in Attempt Counters

HO in Success Counters

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Mobility (5) – Inter-RAT Handover Success Rate

Inter-RAT Handover Success Rate (LTE to WCDMA)

This KPI can be used to evaluate the inter-RAT handover

success rate from LTE to WCDMA in a cluster.

%100_2_

_2__2_

AttemptOutWLIRATHO

SuccessOutWLIRATHOSRWLIRATHO out

Inter-RAT Handover Success Rate (LTE to GERAN)

This KPI can be used to evaluate the inter-RAT handover success rate from LTE to GERAN in a cluster.

%100_2_

_2__2_

AttemptOutGLIRATHO

SuccessOutGLIRATHOSRGLIRATHO out

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Mobility (6) – Inter-RAT Handover Success Rate

Inter-RAT Handover Success Rate (LTE to CDMA2000)

This KPI can be used to evaluate the inter-RAT handover success

rate from LTE to CDMA2000 in a cluster.

_ 2 __ 2 _ 100%

_ 2 _out

IRATHO L C SuccessOutIRATHO L C SR

IRATHO L C AttemptOut

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Mobility (7) – Counter Mapping for Inter-RAT HO SR

B point , HO attempt, and

distinguish the target system by

an element “targetRAT-Type ” in

the message

C point, HO Success

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Availability (1) - Radio Network Unavailability Rate

Radio Network Unavailability Rate

This KPI provides the percentage of time that a cell is unavailable in order to evaluate the

degradation of the network performance caused by the unavailable cells. It is calculated based

on the time of all cell unavailability in the radio network (cluster).

Where the {SP} denotes the reports period of counters, and the unit is minutes.

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Availability (2) – Counter Mapping for RAN Unavailability Rate

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Utilization (1) – DL/UL RB Utility Rate

Uplink Resource Block Utility Rate

This KPI evaluates the UL RB (Resource Block) utility rate of a cell or cluster.

%100_

__

AvailableULRB

UsedULRBeUtilityRatULRB

The ULRB_Availbable and DLRB_Available are fix values, which can be calculated by system

bandwidth.

Downlink Resource Block Utility Rate

This KPI evaluates the DL RB (Resource Block) utility rate of a cell or cluster.

%100_

__

AvailableDLRB

UsedDLRBeUtilityRatDLRB

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Utilization (2) – Counter Mapping for RB Utility Rate

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Utilization (3) – Average CPU Load

Average CPU Load

This KPI is used to evaluate the CPU usage in busy hours. It indicates the system loading. The

CPU load is calculated by averaging the CPU usage ratio in the measurement period.

MeanCPUUtility

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Utilization (4) – Counter Mapping for Average CPU

Load

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Traffic (1) – Active Users

_AvgUserNumber ULData

Active Users

This group of KPIs consist of 6 KPIs, which are used to evaluate the user numbers which has the RRC

connection in the cell, the user numbers with uplink data in the buffer or with downlink data in the buffer,

and also give the average user number and maximum user number in a cell or cluster.

_AvgUserNumber DLData

_MaxUserNumber DLData

_MaxUserNumber ULData

AvgUserNumber

MaxUserNumber

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Traffic (2) – Counter Mapping for Active Users

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Traffic (3) – Counter Mapping for Active Users

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Traffic (4) – Counter Mapping for Active Users

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Traffic (5) – Radio Bearers

Radio Bearers

The radio bearers KPIs consist of ten sub-KPIs, one is for the total of radio bearers and the other

nine are for nine QCIs. This set of KPIs can be used to evaluate the average radio bearers in a

cell or a cluster. The radio bearer for each QCI is based on the number of active RRC

connections for each QCI according to the QCI defined in the QoS information.

……

9__QCIrsRadioBeare

1__QCIrsRadioBeare

RadioBearers

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Traffic (6) – Counter Mapping for Radio Bearers

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Traffic (7) - Traffic Volume

Downlink Traffic Volume

Similar to the radio bearers KPIs, the downlink traffic volume KPIs consist of ten sub-KPIs, one is for the

total of traffic volume for DRBs and the other nine are for nine QCIs. This group of KPIs can be used to

evaluate the DL traffic volume in a cell, which is measured at the PDCP layer excluding the PDCP

header

…… 9__QCIolumeDLTrafficV_ _1DLTrafficVolume QCI

Uplink Traffic Volume

Similar to the downlink traffic volume KPIs, the uplink traffic volume KPIs consist of ten sub-KPIs, one is

for the total of traffic volume for DRBs and the other nine are for nine QCIs. This group of KPIs can be

used to evaluate the uplink traffic volume in a cell. The KPIs are measured at the PDCP layer excluding

the PDCP header.

1__QCIolumeULTrafficV 9__QCIolumeULTrafficV……

DLTrafficVolume

ULTrafficVolume

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Traffic (8) - Counter Mapping for Traffic Volume

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Traffic (9) - Counter Mapping for Traffic Volume

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Service Integrity (1) – Service Average Throughput

Service Downlink Average Throughput

This KPI consist of nine sub-KPIs mapped into nine QCIs (QCI 1~9), they evaluate the downlink

throughput of a service with a specific QCI per user in each cell, it reflects the end-user experience.

Service Uplink Average Throughput

Same with the service downlink average throughput, this set of KPIs consist of nine sub-KPIs mapped

into nine QCIs (QCI 1~9), and the meaning is also similar with it.

1__QCIhroughputULAverageT

……

9__QCIhroughputULAverageT

1__QCIhroughputDLAverageT

……

9__QCIhroughputDLAverageT

The total downlink traffic volume at PDCP layer of each QCI and total duration for transmitting them are

measured within a measurement period. Then the average throughput of each QCI is obtained at the end

of the measurement period.

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Service Integrity (2) – Cell Average Throughput

Cell Downlink Average Throughput

This KPI evaluates the cell downlink average throughput when there are data transferring at downlink. It

reflects the cell capacity.

Cell Uplink Average Throughput

Same with the cell downlink average throughput, this set of KPI reflects the cell capacity, and the

meaning is also similar with it.

The total downlink traffic volume at PDCP layer of cell and total duration for transmitting which is

measured within a measurement period. Then the average throughput of cell is obtained at the end of the

measurement period.

CellDLTrafficVolumeCellDLAveThp

CellDLTransferTime

CellULTrafficVolumeCellULAveThp

CellULTransferTime

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Service Integrity (3) – Cell Maximum Throughput

Cell Downlink Maximum Throughput

This KPI evaluates the cell downlink maximum throughput when there are data transferring at downlink. It

reflects the cell capacity. It is calculated based on maximum value of downlink traffic volume which are

transferred at each second.

Cell Uplink Maximum Throughput

Same with the cell downlink maximum throughput. It is calculated based on maximum value of

downlink traffic volume which are transferred at each second.

1 ( )

1000( )

CellULMaxTrafficVolumeforEach s bitCellULMaxThp

ms

1 ( )

1000( )

CellDLMaxTrafficVolumeforEach s bitCellDLMaxThp

ms

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Service Integrity (4) – Counter Mapping for Service Average

Throughput

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Service Integrity (5) – Measurement Principle for Throughput

Refer to TS 32.450

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Service Integrity (6) – Counter Mapping for Service Average

Throughput

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Service Integrity (7) – Counter Mapping for Cell Average

Throughput

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Service Integrity (8) – Counter Mapping for Cell Maximum

Throughput

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Latency (1)

Access Latency

This grouped KPI can be used to evaluate the latency of access phase.

AccessLatency_Attach

Defined as the duration from the time the UE

send AttachRequest message to the time the UE

send AttachComplete message message

AccessLatency_Idle2Active

Defined as the duration from (UE in idle mode) the

time the UE send RRCConnectionRequest

message to the time the UE send

RRCConnectionReconfiguration message

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Latency (2)

Control Plane HO Interrupt Latency This grouped KPI can be used to evaluate the control plane interrupt latency during the handover, we can

further distinguish them by different handover scenarios.

This KPIs is measured through drive test. Defined as the duration from the time the UE receives the

handover command(RRCConnectionReconfiguration after MeasurementReport) to the time the UE send

the handover confirm message (RRCConectionReconfigurationComplete) .

HOIntraLTEInterruptneControlPla ___

CLIRATHOInterruptneControlPla 2___

WLIRATHOInterruptneControlPla 2___

GLIRATHOInterruptneControlPla 2___

Service Latency

This grouped KPI can be used to evaluate the latency of a particular service, we can distinguish

them by different services, this KPI will be attained by drive test (or stationary test).

bytesPingencyServiceLat 32__

bytesPingencyServiceLat 1460__

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Latency (3)

User Plane HO Interrupt Latency

This grouped KPI can be used to evaluate the user plane interrupt latency during the handover, we

can further distinguish them by different handover scenarios.

The user plane interrupt latency is different when observed at different layers, for example, at IP

layer or RLC layer or MAC layer.

This KPIs is measured through drive test. Defined as the duration from the last RLC layer package

received before the handover, to the first RLC layer package received after handover. It can be

observed in Probe.

HOIntraLTEInterruptUserPlane ___

CLIRATHOInterruptUserPlane 2___

GLIRATHOInterruptUserPlane 2___

WLIRATHOInterruptUserPlane 2___

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Agenda

KPI System Overview

KPI Detail Description

Recommended KPIs

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Recommended KPIs

The recommended KPIs at this phase include:

KPI Class KPI Name

Accessibility

RRC Setup Success Rate (service)

RRC Setup Success Rate (Signal)

ERAB Setup Success Rate (ALL)

Retainability Call Drop Rate (ALL)

Mobility Intra-frequency Handover Out Success Rate

Traffic

Radio Bearers for Total and QCI 1~9

Downlink Traffic Volume for Total and QCI 1~9

Uplink Traffic Volume for Total and QCI 1~9

Integrity Service Downlink Average Throughput for QCI 1~9

Service Downlink Average Throughput for QCI 1~9

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Performance Data Manager

Page 54

(iManager PRS V100R006 Product Description V1.1)

The PRS is a platform used to manage mobile network

performance reports and analyze network performance.

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Customizing Reports

Page 55

(iManager PRS V100R006 Product Description V1.1)

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Restrictions on Measurement Activations

The period of measurement on northbound interface should be consist

with southbound interface. So far, Huawei support 15minutes and 60minutes

periods as default.

There is no restrictions on the number of NE objects, measurement

objects for 15minutes and 60minutes measurement periods. M2000 can

provide all measurement results of all managed NEs via northbound

performance file interface.

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