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www.DigiTrainee.com Company Confidential
HuaweieRAN KPI introduction (eRAN 6.0)
www.DigiTrainee.com Company Confidential
Contents
1. KPI System Overview
2. KPI Detail Description
3. Recommended KPIs
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1. KPI System Overview
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KPI System Overview
Radio Network KPI : Focus on the radio network performance
Service KPI : Focus on the user experienceLTE KPIs
Accessability Retainability IntegrityMobility 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 Unavailability Rate
Availability
Cell UL/DL Traffic Volume
Radio Bearer Number
Utilization
UL/DL RB Utility Rate
Traffic
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KPI Attained Approach
o 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
o Each measurement result is related to a specific measurement object.
o Counters are organized by Measurement Unit/Family.
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o 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;
o 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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2. KPI Detail Description
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KPI Detail Description
o Accessibility
o Retainability
o Mobility
o Availability
o Utilization
o Traffic
o Integrity
o Latency
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Accessibility (1) RRC Setup Success Rate
o 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-Signaling, mo-Data, delayTolerantAccess-v1020.The UE sets the establishmentCause and received by eNodeB. Causes except mo-Signaling are categorized as service related ones, and the cause of mo-Signaling 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
o 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
o 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
o VoIP ERAB Setup Success RateThis 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
o 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
o 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
o 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
o 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.
%100Re__
Re___
leaseERABVoIP
leaseAbnormalERABVoIPCDRVoIP
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Retainability (1) Call Drop Rate
o 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.
_ Re( ) 100%
_ Re
ERAB Abnormal leaseCDR ALL
ERAB lease
o 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
o 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;
o 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
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Retainability (3) - Call Setup Complete Rate
o 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
o Intra-frequency Handover Out Success RateThis KPI can be used to evaluate the intra-frequency handover out success rate in a cell or cluster.
%100_
___
ptHOOutAttemIntraF
ssHOOutSucceIntraFSRHOOutIntraF
o Inter-frequency Handover Out Success RateThis 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
o Handover In Success RateThis 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
o 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
o 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
o 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
o 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
o 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_Available and DLRB_Available are fix values, which can be calculated by system bandwidth.
o 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
o 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
o 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
o 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
o 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
o 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
o 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.
o 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
o Cell Downlink Average Throughput
This KPI evaluates the cell downlink average throughput when there are data transferring
at downlink. It reflects the cell capacity.
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.
o 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.
CellDLTrafficVolumeCellDLAveThp
CellDLTransferTime
CellULTrafficVolumeCellULAveThp
CellULTransferTime
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Service Integrity (3) Cell Maximum Throughput
o 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.
o 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)
o Access Latency
This grouped KPI can be used to evaluate the
latency of access phase.
o AccessLatency_Attach
Defined as the duration from the time the UE
send AttachRequest message to the time the
UE send AttachComplete message message
o 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)
o Control Plane HO Interrupt LatencyThis 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 commandRRCConnectionReconfiguration after MeasurementReport) to the time the UE send the handover confirm message (RRCConectionReconfigurationComplete) .
HOIntraLTEInterruptneControlPla ___
CLIRATHOInterruptneControlPla 2___
WLIRATHOInterruptneControlPla 2___
GLIRATHOInterruptneControlPla 2___
o Service LatencyThis 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)
o 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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3. Recommended KPI
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Recommended KPIs
o 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
IntegrityService Downlink Average Throughput for QCI 1~9
Service Downlink Average Throughput for QCI 1~9
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Performance Data Manager
(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
(iManager PRS V100R006 Product Description V1.1)
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Restrictions on Measurement Activations
o The period of measurement on northbound
interface should be for 15mconsist with
southbound interface. So far, Huawei support
15minutes and 60minutes periods as default.
o There is no restrictions on the number of NE
objects, measurement objects minutes and 60
minutes measurement periods. M2000 can
provide all measurement results of all
managed NEs via northbound performance
file interface.
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