151470188 Huawei ERAN6 0 KPI Introduction
Transcript of 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)
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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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