LTE eRAN6.0 KPI Introduction.pptx

 Associated Counters

RRC Setup Failure Reason

Figure 1



Figure 2

Possible reason: 

Resource allocation failure (admission failure)



No response from UE ( Poor coverage or terminal problem)

Contents 2. KPI Details 2.1 Accessibility KPI 2.1.1 RRC Success Rate 2.2.2 E-RAB Success Rate

2.2.3 Call Setup Success Rate

Radio Access Bearer (E-RAB) E-RAB UE - SGW User-Data

SGW

UE E-RAB 

Type of bearers 

Default bear: With default QCI which is specified in HSS



 Dedicate bear: With dedicated QCI which is negotiated by PDN-GW and PCRF

E-RAB Setup Success Rate (VoIP) KPI name

ERAB Setup Success Rate (VoIP) (VoIP)

Measurement scope

Cell/Cluster

Formula

Unit



VoIPERABS   _  SR 

VoIPERABSe tupSuccess VoIPERABSe tupAttempt 

Percentage(%)

VoIP is related with QCI 1 bearer



100 %

E-RAB Setup Success Rate (All Service)

KPI name

ERAB Setup Success Rate (All service)

Measurement scope

Cell/Cluster

Formula Unit

 ERAB  ER ABS  S  _ SR 

 ERAB  ER ABSetupS  SetupS uccess  ERAB  ER ABSetupA SetupA ttempt 

Percentage(%)



100 %

 Associated Counters  – Initial E-RAB Setup

L.E-RAB.IntialAttEst.QCI.x

L.E-RAB.InitialSuccEst.QCI.x

 Associated Counters  – Dedicated ERAB Setup

L.E-RAB.AttEst.QCI.x

L.E-RAB.SuccEst.QCI.x

Contents 2. KPI Details 2.1 Accessibility KPI 2.1.1 RRC Setup Success Rate 2.2.2 E-RAB Success Rate 2.2.3 Call Setup Success Rate

Call Setup Success Rate

KPI name

Call Setup Success Rate

Measuremen t scope

Cell/Cluster

Formula

CSSR 

 RRCConnect ionSuccess service

S 1SigConnect ionEstabli shSuccess



 RRCConnect ionAttempt  service S 1SigConnect ionEstabli shAttempt 

 ERABSetupS  ucess  ERABSetupAttemp

Unit



Percentage(%)

100%



Counters For S1 Dedicated Signaling Setup L.S1Sig.ConnEst.Att

L.S1Sig.ConnEst.Succ

Contents 2.  KPI Details 2.1 Accessibility KPI 2.2 Retainability KPIs 2.3 Mobility KPIs

2.4 Equipment Related 2.5 Utilization KPIs / Traffic KPI 2.6 Transport Performance Counter

VoIP Call Drop Rate

KPI name

VoIP call drop rate

Measurement scope

Cell/Cluster

Formula

Unit

VoIP  _ CDR 

VoIPERABABnormal Re lease

Percentage(%)

VoIPERABRe lease



100%

Service Drop Rate (All) KPI name

ERAB drop rate

Measurement scope

Cell/Cluster

Formula

Unit

Service _ CDR 

Percentage(%)

 ERABABnormal Re lease  ERABRe lease



100%

E-RAB Release 

Normal release 

Released with the normal procedure, the statistic is based on each QCI index



 Abnormal release 

Considered as service(call) drop, the statistic can be based on different release cause and each QCI index



Possible causes: 

EPC failure



Radio link failure



Handover failure



Transport failure



Network congestion

 Abnormal Release

Figure 1

Figure 2 L.E-RAB.AbnormalRel.QCI.x

Figure 3

Figure 4

Normal Release

Figure 1 L.E-RAB.NormalRel.QCI.x

Figure 2

Contents 2.  KPI Details 2.1 Accessibility KPI 2.2 Retainability KPIs 2.3 Mobility KPIs

2.4 Service Integrity KPIs 2.5 Utilization/Availability KPIs / Traffic KPI

Intra/Inter-frequency Handover Out Success Rate KPI name

Intra/Inter-frequency Handover Out Success Rate

Measurement scope

Cell/Cluster  IntraFreqH OOut  _ SR 

Formula

 IntraFreqH OOutSucces s  IntraFreqH OOutAttemp t 

 InterFreqH OOut  _  SR 

Unit



 InterFreqH OOutSucces s  InterFreqH OOutAttemp t 

100 %



100 %

Percentage(%)

Note: In HW eNodeB, all the handover attempt statistic is calculated after admission control in target cell, which means HO failure statistic exclude admission failure

 Associated Counters (Intra eNB)

L.HHO.IntraeNB.IntraFreq.ExecAttOut L.HHO.IntraeNB.InterFreq.ExecAttOut

L.HHO.IntraeNB.IntraFreq.ExecSuccOut L.HHO.IntraeNB.InterFreq.ExecSuccOut

Note: In HW eNodeB, all the handover attempt statistic is calculated after admission determination in target cell,

 Associated Counters (Inter eNB) X2 Based Handover

L.HHO.IntereNB.IntraFreq.ExecAttOut L.HHO.IntereNB.InterFreq.ExecAttOut

L.HHO.IntereNB.IntraFreq.ExecSuccOut L.HHO.IntereNB.InterFreq.ExecSuccOut

Handover Based on X2 interface

 Associated Counters (Inter eNB) S1 based Handover

L.HHO.IntereNB.IntraFreq.ExecAttOut L.HHO.IntereNB.InterFreq.ExecAttOut

L.HHO.IntereNB.IntraFreq.ExecSuccOut L.HHO.IntereNB.InterFreq.ExecSuccOut

Handover Based on S1 interface

Handover In Success Rate

KPI name

Handover In Success Rate

Measurement scope

Cell/Cluster

Formula Unit

 HOIn  _  SR  Percentage(%)

 HOInSucces s  HOInAttemp t 



100 %

 Associated Counters (Intra eNB)

L.HHO.IntraeNB.ExecAttIn

L.HHO.IntraeNB.ExecSuccIn

Related Counters (Inter eNB) X2 Handover

L.HHO.IntereNB.ExecAttIn

L.HHO.IntereNB.ExecSuccIn

Handover Based on X2 interface

Related Counters (Inter eNB) S1 Handover

L.HHO.IntereNB.ExecAttIn

L.HHO.IntereNB.ExecSuccIn

Handover Based on S1 interface

Inter_RAT Handover Out Success Rate (LTE to WCDMA) KPI name

Inter-RAT Handover Out Success Rate (LTE to WCDMA)

Measurement scope

Cell/Cluster  IRATHO  _  E 2W  _  SR 

Formula Unit

Percentage(%)

 IRATHO  _  E 2W  _  Success  IRATHO  _  E 2W  _  Attempt 



100 %

 Associated Counters

L.IRATHO.E2W.ExecAttOut

L.IRATHO.E2W.ExecSuccOut

Inter_RAT Handover Out Success Rate (LTE to GSM) KPI name

Inter-RAT Handover Out Success Rate (LTE to GSM)

Measurement scope

Cell/Cluster

Formula

Unit

 IRATHO  _  E 2G _  SR 

Percentage(%)

 IRATHO  _  E 2G _  Success  IRATHO  _  E 2G _  Attempt 



100 %

 Associated Counters

L.IRATHO.E2G.ExecAttOut

L.IRATHO.E2G.ExecSuccOut

Contents 2.  KPI Details 2.1 Accessibility KPI 2.2 Retainability KPIs 2.3 Mobility KPIs 2.4 Service Integrity KPIs 2.5 Utilization/Availability KPIs / Traffic KPI

Cell Downlink Average Throughput KPI name

Downlink Average Throughput

Measurement scope

Cell/Cluster

Formula

Unit

CellDLAveT hp 

bps

CellDLTraf   ficVolume CellDLTran sferTime

Related Counter - DL Traffic Volume 

Description: 

The counters measure the total traffic volume of transmitted PDCP SDUs for each service with a specific QCI ranging from 1 to 9 in a cell.



Measurement Point 

The size of the payloads in the transmitted PDCP SDUs of each service with a specific QCI is sampled in a cell. At the end of a measurement period, the sum of these sampling results is used as the value of the corresponding counter.

Related Counter  – DL Transmission Time 

Description: 

The counters measure the transmit duration of downlink PDCP SDUs for services with a specific QCI ranging from 1 to 9 in a cell.



Measurement Point 

The transmit duration of downlink PDCP SDUs for each service with a specific QCI ranging from 1 to 9 in a cell is sampled per millisecond. If there is downlink data transmission within this millisecond, the sampling result of the corresponding counter is 1.  At the end of a measurement period, the sum of these sampling results is used as the value of the corresponding counter.

Cell Uplink Average Throughput KPI name

Downlink Average Throughput

Measurement scope

Cell/Cluster

Formula

Unit

CellULAveT hp 

bps

CellULTraf   ficVolume CellULTran sferTime

Related Counter - UL Traffic Volume 

Description: 

The counters measure the total traffic volume of received PDCP SDUs for each service with a specific QCI ranging from 1 to 9 in a cell.



Measurement Point 

The size of the payloads in the received PDCP SDUs of each service with a specific QCI is sampled in a cell. At the end of a measurement period, the sum of these sampling results is used as the value of the corresponding counter.

Related Counter  – UL Receiving Time 

Description: 

The counters measure the receive duration of uplink PDCP SDUs for services with a specific QCI ranging from 1 to 9 in a cell.



Measurement Point 

The receive duration of uplink PDCP SDUs for each service with a specific QCI ranging from 1 to 9 in a cell is sampled per millisecond. If there is uplink data receiving within this millisecond, the sampling result of the corresponding counter is 1. At the end of a measurement period, the sum of these sampling results is used as the value of the corresponding counter.

Contents 2.  KPI Details 2.1 Accessibility KPI 2.2 Retainability KPIs 2.3 Mobility KPIs

2.4 Service Integrity KPIs 2.5 Utilization/Availability KPIs

CPU Usage Measurement Slot No.=1

Slot No.=2

Measurement Object: Cabinet No.=0, Subrack No.=0, Slot No.=3

Measurement Object: Cabinet No.=0, Subrack No.=0, Slot No.=7

LMPT  – LTE Main Processing & Transmission Unit (in slot 7) LBBP  – LTE BaseBand Processing Unit (First LBBP in Slot 3)

Related Counters Counter ID

Counter name

Description

1526727013

VS.Board.CPUload. Max

Maximum Board CPU Usage

1526727014

VS.Board.CPUload. Mean

 Average Board CPU Usage

1526728332

VS.Board.CPULoad. CumulativeHighload Count

Number of Times that the CPU Usage of Boards Exceeds the Preconfigured Threshold

Resource Block Utilizing Rate KPI name

Resource Block Utilizing Rate

Measurement scope

Cell/Cluster

Formula

Unit

 RB _ UR DL



 RB _ UR UL



 RB _ Used  DL  RB _  Available DL

 RB _ Used UL  RB _  AvailableUL

Percentage(%)



100 %



100 %

 Associated Counters 

 Average number of used downlink PRBs 

Measurement point: The number of used downlink PRBs in a cell is sampled per second. At the end of a measurement period, the average of these sampling results is used as the value of the counter



 Average number of used uplink PRBs 

Measurement point: The number of PRBs over the PUCCH in a cell is sampled per second .At the end of a measurement period, the average of these sampling results is used as the value of the counter.

Radio Network Unavailability Rate KPI name

Radio Network Unavailability Rate

Measurement scope

Radio network (Cluster)

Formula

 RAN  _ Unavail  _  Rate 

 CellUnavailTime TheTotalNumberOfCellsInCluser *{SP }* 60

SP:indicates the report period of counters in minute

Unit

Percentage(%)

x 100%

Contents 1. KPI Overview 2. Performance KPI 3. Driver test KPI

Coverage Ratio 

Object : Coverage test (RSRQ & RSRP)



Evaluation formula: 



Coverage radio = valid test kilometers / total test kilometers

Standard: 

The valid test kilometers should be satisfied for RSRP ≥ 110dBm，RSRQ

≥ -3dB

Summary 

KPI category in EUTRAN



KPI introduction



Counter details

 Abbreviation 

ERAB: E-UTRAN Radio Access Bearer



RRC: Radio Resource Control



MRC: Maximum Ratio Combining



PSIC: Parallel Soft Interference Cancellation