ZXG10 iBSC (V6.30.103) KPI Reference_520529

ZXG10 iBSCBase Station Controller

KPI Reference

Version: V6.30.103

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Revision History

Revision No. Revision Date Revision Reason

R1.0 2013-05-29 First Edition

Serial Number: SJ-20130408113951-011

Publishing Date: 2013-05-29 (R1.0)

SJ-20130408113951-011|2013-05-29 (R1.0) ZTE Proprietary and Confidential

ContentsAbout This Manual ......................................................................................... I

Chapter 1 Introduction of KPI in CS Domain ........................................... 1-11.1 Availability ......................................................................................................... 1-1

1.1.1 306001 SDCCH in service rate(%) ............................................................ 1-1

1.1.2 306011 SDCCH available total number ...................................................... 1-2

1.1.3 306031 Whole carrier total number............................................................ 1-2

1.1.4 306004 TCH in service rate(%) ................................................................. 1-3

1.1.5 306016 Available TCH total number .......................................................... 1-3

1.1.6 306030 TCH total number in busy time ...................................................... 1-4

1.1.7 306029 SDCCH total number in busy time ................................................. 1-4

1.2 Accessibility ....................................................................................................... 1-5

1.2.1 306012 SDCCH attemption total number ................................................... 1-5

1.2.2 306013 SDCCH overflow total number ...................................................... 1-6

1.2.3 306002 SDCCH in congestion rate(%)....................................................... 1-6

1.2.4 306003 SDCCH channel in call drop rate(%).............................................. 1-7

1.2.5 306058 Attempted SDCCH Seizures meeting an SDCCH blocked state ...... 1-7

1.2.6 306040 SDCCH allocate failure number in busy time.................................. 1-8

1.2.7 306014 SDCCH Dropped call total number ................................................ 1-9

1.2.8 306017 TCH attempt total number(exclude handover) ................................ 1-9

1.2.9 306019 TCH attempt total number(include handover) ............................... 1-10

1.2.10 306018 TCH overflow total number(exclude handover) ............................1-11

1.2.11 306020 TCH overflow total number(include handover) .............................1-11

1.2.12 306021 TCH seizure total number(exclude handover)............................. 1-12

1.2.13 306022 TCH seizure total number(include handover).............................. 1-13

1.2.14 306041 TCH allocate failure number without handover ........................... 1-13

1.2.15 306043 TCH allocate failure number with handover ................................ 1-14

1.2.16 306005 TCH in congestion rate(exclude handover)(%) ........................... 1-16

1.2.17 306006 TCH in congestion rate(include handover)(%) ............................ 1-16

1.2.18 306034 TCH assign failure rate(%) ........................................................ 1-17

1.2.19 306046 TCH allocate failure rate(%) ...................................................... 1-17

1.2.20 306055 Successful TCH/PDTCH seizures (Previously TCHs).................. 1-18

1.2.21 306054 Attempted Time Slots seizures (Previously TCHs) ...................... 1-19

1.2.22 306056 Attempted TCH Seizures meeting an TCH blocked state............. 1-20

I


1.2.23 306032 Radio switch rate(%) ................................................................ 1-20

1.2.24 306057 Mean busy time of allocated CS Time Slots................................ 1-21

1.2.25 306042 TCH allocate no success number without handover.................... 1-21

1.2.26 306044 TCH allocate no success number with handover ........................ 1-22

1.2.27 306045 TCH seize number in busy time................................................. 1-24

1.3 Reliability ......................................................................................................... 1-24

1.3.1 306007 TCH in call drop rate(exclude handover)(%)................................. 1-24

1.3.2 306008 TCH in call drop rate(include handover)(%).................................. 1-25

1.3.3 306023 TCH dropped call total number.................................................... 1-25

1.3.4 306039 Call drop rate of traffic ................................................................ 1-26

1.4 Traffic .............................................................................................................. 1-27

1.4.1 306015 SDCCH total traffic number (erl) .................................................. 1-27

1.4.2 306059 Average TCH traffic number per channel and hour ....................... 1-27

1.4.3 306024 TCH total traffic number (erl) ....................................................... 1-28

1.5 Mobility............................................................................................................ 1-28

1.5.1 306009 Handover success rate(%).......................................................... 1-28

1.5.2 306010 Dual band handover success rate(%) .......................................... 1-29

1.5.3 306025 Total number of handover request ............................................... 1-30

1.5.4 306026 Total number of successful handover........................................... 1-30

1.5.5 306027 Total number of dual band handover attemption ........................... 1-31

1.5.6 306028 Total number of successful dual band handover ........................... 1-31

1.5.7 306035 Handover in success rate(%) ...................................................... 1-32

1.5.8 306036 Handover out success rate(%) .................................................... 1-32

1.5.9 306033 Handover request rate in busy time(%) ........................................ 1-33

1.5.10 306048 Successful Internal Handovers .................................................. 1-34

1.5.11 306047 Unsuccessful Internal Handovers, intra-CELL............................. 1-34

1.6 Measurement Result ........................................................................................ 1-35

1.6.1 306049 Mean number of idle TCHs with interference band 1..................... 1-35





1.6.6 306037 Radio switch rate(exclude handover)(%)...................................... 1-37

1.6.7 306061 Radio Capacity .......................................................................... 1-38

1.6.8 306062 Radio utilization rate ................................................................... 1-39

1.6.9 306401 Bad cell number ......................................................................... 1-39

1.6.10 306402 Busy cell number...................................................................... 1-40

II


1.6.11 306403 Idle cell number ........................................................................ 1-40

1.6.12 306404 Total cell number(accord with yidong condition) .......................... 1-41

1.6.13 306451 The percent of bad cell ............................................................. 1-41

Chapter 2 Introduction of KPI in PS Domain ........................................... 2-12.1 LLC ................................................................................................................... 2-1

2.1.1 306528 Ratio of Downlink LLC Signal Frame Discarded(%) ........................ 2-1

2.1.2 306529 Ratio of Downlink GPRS Data Frame Discarded(%) ....................... 2-2

2.1.3 306530 Ratio of Downlink EGPRS Data Frame Discarded(%) ..................... 2-2

2.2 TBF................................................................................................................... 2-3

2.2.1 306501 Ratio of Uplink TBF Establish Link successfully(%)......................... 2-3

2.2.2 306502 Ratio of Downlink TBF Establish Link successfully(%) .................... 2-3

2.2.3 306503 Percent of The Uplink Signal TBF in Uplink TBF(%) ....................... 2-4

2.2.4 306504 Percent of The Downlink Signal TBF in Downlink TBF(%) ............... 2-5

2.2.5 306505 Percent of The GPRS Uplink Data TBF in Uplink Data TBF(%) ....... 2-5

2.2.6 306506 Percent of The GPRS Downlink Data TBF in Downlink DataTBF(%) .................................................................................................. 2-6

2.2.7 306531 Ratio of Uplink Signal TBF Failure(%)............................................ 2-7

2.2.8 306534 Ratio of Downlink Signal TBF Failure(%) ....................................... 2-7

2.2.9 306532 Ratio of Uplink GPRS Data TBF Failure(%).................................... 2-8

2.2.10 306535 Ratio of Downlink GPRS Data TBF Failure(%) ............................. 2-8

2.2.11 306533 Ratio of Uplink EGPRS Data TBF Failure(%)................................ 2-9

2.2.12 306536 Ratio of Downlink EGPRS Data TBF Failure(%) ......................... 2-10

2.2.13 306518 Mean Rate of GPRS Uplink Data TBF(kbps) .............................. 2-10

2.2.14 306519 Mean Rate of GPRS Downlink Data TBF(kbps) ...........................2-11

2.2.15 306516 Percent of Uplink GPRS Data TBF Establish on PACCHChannel(%) ...........................................................................................2-11

2.2.16 306517 Percent of Downlink GPRS Data TBF Establish on PACCHChannel(%) .......................................................................................... 2-12

2.2.17 306522 Percent of Uplink EGPRS Data TBF Establish on PACCHChannel(%) .......................................................................................... 2-13

2.2.18 306523 Percent of Downlink EGPRS Data TBF Establish on PACCHChannel(%) .......................................................................................... 2-13

2.2.19 306524 Mean Rate of EGPRS Uplink Data TBF(kbps) ............................ 2-14

2.2.20 306525 Mean Rate of EGPRS Downlink Data TBF(kbps)........................ 2-14

2.2.21 306537 UL GPRS TBF Drop Rate ......................................................... 2-15

2.2.22 306538 DL GPRS TBF Drop Rate ......................................................... 2-15

2.2.23 306539 UL EGPRS TBF Drop Rate ....................................................... 2-16

2.2.24 306540 DL EGPRS TBF Drop Rate ....................................................... 2-17

III


2.3 RLC ................................................................................................................ 2-17

2.3.1 306509 Ratio of usage of Uplink Packet Channel(%) ................................ 2-17

2.3.2 306510 Ratio of usage of Downlink Packet Channel(%)............................ 2-18

2.3.3 306511 Ratio of usage of Abis bandwidth(%) ........................................... 2-18

2.3.4 306512 Throughput of Cell LLC Layer Uplink Data(bps)............................ 2-19

2.3.5 306513 Mean Throughput of Each Channel LLC Layer UplinkData(bps) ............................................................................................. 2-19

2.3.6 306514 Throughput of Cell LLC Layer Downlink Data(bps) ....................... 2-20

2.3.7 306515 Mean Throughput of Each Channel LLC Layer DownlinkData(bps) ............................................................................................. 2-21

2.3.8 306520 Ratio of GPRS RLC Uplink block resent(%) ................................. 2-21

2.3.9 306521 Ratio of GPRS RLC Downlink block resent(%) ............................. 2-22

2.3.10 306526 Ratio of EGPRS RLC Uplink block resent(%) ............................. 2-22

2.3.11 306527 Ratio of EGPRS RLC Downlink block resent(%) ......................... 2-23

2.3.12 306507 Percent of Overhead in Uplink Packet Channel RLCSignal(%) ............................................................................................. 2-24

2.3.13 306508 Percent of Overhead in Downlink Packet Channel RLCSignal(%) ............................................................................................. 2-24

Glossary .......................................................................................................... I

IV


About This ManualPurpose

This manual introduces the definitions, formulas, and influence factors of common KPI,and introduces the typical cases in KPI optimization project.

Intended Audience

l System Engineerl Test Engineerl Planning Engineer

What Is in This Manual

This manual contains the following chapters.

Chapter Description

Chapter 1 Introduction of KPI

in CS Domain

Introduces descriptions, definitions, formulas, and units for several

kinds of KPI in CS domain.

Chapter 2 Introduction of KPI

in PS Domain

Introduces description, definition, formula, and unit for several kinds

of KPI in PS domain.

Related Documentation

The following documentation is related to this manual:

l ZXG10 iBSC Base Station Controller Performance Counter Reference

I


II


Chapter 1Introduction of KPI in CSDomainThis chapter introduces descriptions, definitions, formulas, and units of different KPI typesin CS domain.

Table of Contents

Availability ..................................................................................................................1-1Accessibility ...............................................................................................................1-5Reliability..................................................................................................................1-24Traffic .......................................................................................................................1-27Mobility.....................................................................................................................1-28Measurement Result ................................................................................................1-35

1.1 Availability

1.1.1 306001 SDCCH in service rate(%)

Description

This statistic provides the percentage of available SDCCH.

Definition

Percentage of SDCCH availability equals to number of available SDCCH divided bynumber of online defined SDCCH.

Counter Formula

C901080001/(C901080001+C901080002)

Index Type

KPI

Type

Percentage

1-1


ZXG10 iBSC KPI Reference

Basis

Cell

1.1.2 306011 SDCCH available total number

Description

This statistic provides the number of SDCCH channels that can be normally assigned in acell.

Definition

Number of available SDCCH includes the channel in use and usable channels currently inidle mode, that is, occupied and idle SDCCH channels.

Counter Formula

C901080001

Index Type

PI

Type

Counter

Basis

Cell

1.1.3 306031 Whole carrier total number

Description

This statistic provides the number of all usable TRXs defined in the cell.

Definition

The number of all usable TRXs defined in the cell.

Counter Formula

C901080031

Index Type

PI

1-2


Chapter 1 Introduction of KPI in CS Domain

TypeCounter

BasisCell

1.1.4 306004 TCH in service rate(%)

DescriptionThis statistic provides the percentage of available TCH.

DefinitionTCH availability equals to number of available TCH divided by number of defined TCH(including available number and unavailable number).

Counter Formula(C901080009+C901080028+C901080019)/(C901080009+C901080028+C901080019+C901080010+C901080020+C901080029)

Index TypeKPI

TypePercentage

BasisCell

1.1.5 306016 Available TCH total number

DescriptionThis statistic provides the number of available TCH channels, including the number ofavailable dynamic GPRS service channels (including the channels in use, and usable butin idle state).

DefinitionThe number of available TCH equals to the number of available dynamic defined TCH plusthe number of static defined TCH.

Counter FormulaC901080009+C901080028+C901080019

1-3



Index TypePI

TypeCounter

BasisCell

1.1.6 306030 TCH total number in busy time

DescriptionThis statistic provides the number of TCH in busy time.

DefinitionThe number of defined TCH equals to the number of available TCH (both dynamic andstatic) plus the number of unavailable TCH (both dynamic and static).

Counter FormulaC901080009+C901080028+C901080019+C901080010+C901080020+C901080029

Index TypePI

TypeCounter

BasisCell

1.1.7 306029 SDCCH total number in busy time

DescriptionThis statistic provides the number of defined SDCCH in the cell, including available andunavailable channels.

DefinitionThe number of defined SDCCH equals to the number of available plus the number ofunavailable SDCCHs.

1-4



Counter FormulaC901080001+C901080002

Index TypeKPI

TypeCounter

BasisCell

1.2 Accessibility

1.2.1 306012 SDCCH attemption total number

DescriptionThis statistic provides the number of SDCCH seizure request within counting period.It counts channel requests received from MS on BSS, where, establishment processindicates SDCCH is allocated. (Attempts include normal originated call, location update,call re-establishment, IMSI request and separation, request allocating SDCCH by SMS,and assigning TCH as SDCCH for very early allocation).）

DefinitionThe number of SDCCH attempts equals to the number of SDCCH seized attempts plusthe number of TCH seized attempts while assigning signaling channel (including TCH/Fand TCH/H).

Counter FormulaC901250001+C901260001+C901270001

Index TypePI

TypeCounter

BasisCell

1-5



1.2.2 306013 SDCCH overflow total number

Description

This statistic provides the number of overflow caused by unavailable SDCCH resourcesin SDCCH attempts within the counting period. Send “Immediate Assignment Reject”message aiming for SDCCH from BSC to MS; when this message is used to reject morethan one channel requests, corresponding times (up to 4) must be counted based on theinformation therein.

Definition

The number of SDCCH overflow equals to the number of SDCCH seized requests plusthe number of TCH seized attempt failures while assigning signaling channel (includingTCH/F and TCH/H).

Counter Formula

C901250003+C901260003+C901270003

Index Type

PI

Type

Counter

Basis

Cell

1.2.3 306002 SDCCH in congestion rate(%)

Description

This statistic provides the percentage of attempts to allocate an SDCCH that is blocked dueto non availability of SDCCH resources. This statistic includes incoming SDCCH handoverattempts.

Definition

SDCCH in congestion equals to the number of SDCCH congestion divided by the numberof SDCCH attempts.

Counter Formula

(C901250003+C901260003+C901270003)/(C901250001+C901260001+C901270001)

1-6



Index Type

KPI

Type

Percentage

Basis

Cell

1.2.4 306003 SDCCH channel in call drop rate(%)

Description

This statistic provides the percentage of SDCCH drops.

Definition

SDCCH drop rate equals to the number of SDCCH drops divided by the number of SDCCHattempts.

Counter Formula

C901070050/(C901250001+C901260001+C901270001)

Index Type

KPI

Type

Percentage

Basis

Cell

1.2.5 306058 Attempted SDCCH Seizures meeting an SDCCHblocked state

Description

This statistic provides the number of congestion caused by unavailable SDCCH resourcesin SDCCH attempts. It counts the “Immediate assignment reject” message sent from BSCto MS.

1-7



DefinitionThe number of SDCCH seizure meeting an SDCCH blocked state equals to the numberof SDCCH seizure failure on assignment plus the number of SDCCH seizure failure onhandover.


Index TypePI

TypeCounter

BasisCell

1.2.6 306040 SDCCH allocate failure number in busy time

DescriptionThis statistic provides the number of SDCCH allocation failure in SDCCH attempts withincounting period. It counts the number of Channel Request (cause is to apply for SDCCH)minus the number of Immediate Assignment for SDCCH.

DefinitionThe number of SDCCH allocation failure equals to the sum of the number of SDCCHcongestion, the number of SDCCH allocation failure on assignment, and the number ofTCH (including TCH/F and TCH/H) allocation failure on assigning SDCCH.


Index TypePI

TypeCounter

BasisCell

1-8



1.2.7 306014 SDCCH Dropped call total number

Description

This statistic provides the number of drops after successful SDCCH allocation.

Definition

The number of drops caused by radio link failure, LAPD disconnection, and handoverfailure on SDCCH.

Counter Formula

C901070050

Index Type

PI

Type

Counter

Basis

Cell

1.2.8 306017 TCH attempt total number(exclude handover)

Description

This statistic provides the number of TCH attempts after seizing SDCCH. It countsAssignment Requests sent from MSC to BSS. (Attempts include calling and calledattempts to establish connection, excluding the case to assign TCH as SDCCH duringearly allocation and different handover cases. ）

Definition

The number of TCH attempts equals to the number of TCH (including TCH/F and TCH/H)seizure attempts while assigning voice channel and the number of TCH (including TCH/Fand TCH/H) seizure attempts while assigning data channel.

Counter Formula

C901260020+C901260069+C901270020+C901270069

Index Type

PI

1-9



Type

Counter

Basis

Cell

1.2.9 306019 TCH attempt total number(include handover)

Description

This statistic provides the number of TCH attempts after seizing SDCCH. It countsallocation requests and handover requests (external handover) sent from MSC to BSC,handover command message sent from BSC to MS (internal handover) “AssignmentRequest” + ”Handover Request” (cell handover controlled by MSC, External HO) +“Handover Command” (Intra-cell handover controlled by BSC), internal HD. (includingthe number of all types of handover attempts (intra-cell, intra-BSC, inter-BSC). Attemptsinclude calling and called attempts to establish connection, including different handoverand direct retry cases, excluding the case to assign TCH as SDCCH during earlyallocation.

Definition

The number of TCH (including TCH/F and TCH/H) attempts (including handover) equalsto the number of TCH seizure attempts while assigning voice channel, voice channelhandover, assigning data channel, and data channel handover.

Counter Formula

C901260020+C901260069+C901270020+C901270069+C901260023+C901260072+C901270023+C901270072

Index Type

PI

Type

Counter

Basis

Cell

1-10



1.2.10 306018 TCH overflow total number(exclude handover)

Description

This statistic provides the number of overflow due to no TCH resource and queue overtimeafter seizing SDCCH. It counts allocation failure (where, due to non availability of radioresource) + clear request (where, due to non availability of radio resource) sent fromBSS toMSC. (It includes the number of overflow due to no TCH resource and queue overtime afterthe calling and called sides seize SDCCH, this excludes the case to assign TCH channelas SDCCH during early allocation, and excluding different handovers, but including directretry.）

Definition

The number of TCH overflow equals to the number of TCH (including TCH/F and TCH/H)attempt failures while assigning voice channel and the number of TCH (including TCH/Fand TCH/H) seizure attempts while assigning data channel.

Counter Formula

C901260022+C901260071+C901270022+C901270071

Index Type

PI

Type

Counter

Basis

Cell

1.2.11 306020 TCH overflow total number(include handover)

Description

This statistic provides the number of overflow due to no TCH resource and queue overtimewhile calling TCH after seizing SDCCH. It counts incoming Handover Failure (no radioresource available) + Assignment Failure (no radio resource) + Clear Request (no radioresource available) messages. (including the number of all handover failure caused byno TCH resource (intra-cell, intra-BSC, inter-BSC). The number of overflow includes thatcaused by no TCH resource after the calling and called sides seize SDCCH, this excludesthe case to assign TCH channel as SDCCH during early allocation, including differenthandovers and direct retry case.）

1-11



Definition

The number of TCH overflow (including handover) equals to the number of TCH seizureattempt failures while assigning voice channel, voice channel handover, assigning datachannel, and data channel handover.

Counter Formula

C901260022+C901260071+C901270022+C901270071+C901260025+C901260074+C901270025+C901270074

Index Type

PI

Type

Counter

Basis

Cell

1.2.12 306021 TCH seizure total number(exclude handover)

Description

This statistic provides the number of calling or called assignment TCH success within acounting cycle. It counts Assignment Complete message. (excluding different handoversand direct retry.）

Definition

The number of TCH seizure equals to the number of success while assigning TCH(including TCH/F and TCH/H) as voice channel plus the number of success whileassigning TCH (including TCH/F and TCH/H) as data channel.

Counter Formula

C901260063+C901260088+C901270063+C901270088

Index Type

PI

Type

Counter

1-12



Basis

Cell

1.2.13 306022 TCH seizure total number(include handover)

Description

This statistic provides the number of calling or called assignment TCH success withina counting cycle. It counts Assignment Complete + Handover Complete message.(Including different handovers, excluding direct retry)

Definition

The number of TCH seizure (including handover) equals to the number of TCH seizure(excluding handover) plus the number of handover success (including handover amongintra-cell, intra-BSC, and inter-BSC).

Counter Formula

C901260063+C901260088+C901270063+C901270088+C901090019+C901090036+C901090107

Index Type

PI

Type

Counter

Basis

Cell

1.2.14 306041 TCH allocate failure number without handover

Description

This statistic provides the number of TCH allocation failures after seizing SDCCH within acounting cycle. It counts allocation failure message “Assignment Failure + Clear Request(radio interface failure)” sent from BSS to MSC. (TCH allocation failures include the caseof TCH allocation attempt failure after the calling and called sides seize SDCCH (radiointerface failure), this excludes the case to assign TCH as SDCCH during early allocationand different handover cases, including all trigger factors for assignment failure message.）

1-13



DefinitionThe number of TCH allocate failure number without handover equals to the sum ofnumber of TCH congestion (excluding handover), number of TCH (including TCH/F andTCH/H) allocation failures caused by channel activation failure, BTS connection failure,BIU connection failure, TCU connection failure while assigning voice and data channels,and the number of TCH (including TCH/F and TCH/H) assignment failure as voice anddata channels.

Counter FormulaC901260022+C901260071+C901270022+C901270071+C901260028+C901260052+C901260040+C901260029+C901260030+C901260031+C901260041+C901260042+C901260043+C901260053+C901260054+C901260055+C901260077+C901260078+C901260079+C901260080+C901260064+C901260089+C901270028+C901270052+C901270040+C901270029+C901270030+C901270031+C901270041+C901270042+C901270043+C901270053+C901270054+C901270055+C901270078+C901270079+C901270080+C901270077+C901270064+C901270089+C901260106+C901260107+C901260108+C901260112+C901260113+C901260114+C901260118+C901260119+C901260120+C901260124+C901260125+C901260126+C901270106+C901270107+C901270108+C901270112+C901270113+C901270114+C901270118+C901270119+C901270120+C901270124+C901270125+C901270126+C901260226+C901260230+C901270200+C901270204

Index TypePI

TypeCounter

BasisCell

1.2.15 306043 TCH allocate failure number with handover

DescriptionThis statistic provides the number of all TCH allocation failures to call TCH after seizingSDCCH within a count cycle. It counts incoming “Handover Failure + Assignment Failure”message. (Congestion includes the case of TCH establishment attempt failure after thecalling and called sides seize SDCCH, this excludes the case to assign TCH as SDCCHduring early allocation, including different handover and direct retry cases. ）

DefinitionThe number of TCH allocate failure number with handover equals to the sum of numberof TCH congestion (including handover), the number of TCH (including TCH/F and

1-14



TCH/H) allocation failures caused by channel activation failure, BTS connection failure,BIU connection failure, TCU connection failure while assigning voice and data channels,oice and data channel handover, and the number of TCH (including TCH/F and TCH/H)assignment failure as voice and data channels.

Counter Formula

C901260022+C901260071+C901270022+C901270071+C901260028+C901260052+C901260040+C901260029+C901260030+C901260031+C901260041+C901260042+C901260043+C901260053+C901260054+C901260055+C901260077+C901260078+C901260079+C901260080+C901260064+C901260089+C901270028+C901270052+C901270040+C901270029+C901270030+C901270031+C901270041+C901270042+C901270043+C901270053+C901270054+C901270055+C901270078+C901270079+C901270080+C901270077+C901270064+C901270089+C901260025+C901260034+C901260035+C901260036+C901260037+C901260046+C901260047+C901260048+C901260049+C901260058+C901260059+C901260060+C901260061+C901260074+C901260083+C901260084+C901260085+C901260086+C901270025+C901270034+C901270035+C901270036+C901270037+C901270046+C901270047+C901270048+C901270049+C901270058+C901270059+C901270060+C901270061+C901270074+C901270083+C901270084+C901270085+C901270086+(C901090012+C901090029+C901090031+C901090033+C901090035+C901090106)-(C901090019+C901090036+C901090107)+(C901260106+C901260107+C901260108+C901260112+C901260113+C901260114+C901260118+C901260119+C901260120+C901260124+C901260125+C901260126+C901270106+C901270107+C901270108+C901270112+C901270113+C901270114+C901270118+C901270119+C901270120+C901270124+C901270125+C901270126+C901260109+C901260110+C901260111+C901260115+C901260116+C901260117+C901260121+C901260122+C901260123+C901260127+C901260128+C901260129+C901270109+C901270110+C901270111+C901270115+C901270116+C901270117+C901270121+C901270122+C901270123+C901270127+C901270128+C901270129)+(C901260226+C901260230+C901270200+C901270204+C901260228+C901260232+C901270202+C901270206)

Index Type

PI

Type

Counter

Basis

Cell

1-15



1.2.16 306005 TCH in congestion rate(exclude handover)(%)

Description

The statistic provides the percentage of all requests for TCH resources (originations) whichfail due to non availability of TCH resources.

Definition

TCH congestion rate (excluding handover) equals to the number of TCH congestion(excluding handover) divided by the number of TCH attempts (excluding handover).

Counter Formula

(C901260022+C901260071+C901270022+C901270071)/(C901260020+C901260069+C901270020+C901270069)

Index Type

KPI

Type

Percentage

Basis

Cell

1.2.17 306006 TCH in congestion rate(include handover)(%)

Description

This statistic provides TCH congestion rate (including handover). This statistic providesthe percentage of all requests for TCH resources (originations and handover) which faildue to non availability of TCH resources.

Definition

TCH congestion rate (including handover) equals to the number of TCH congestion(including handover) divided by the number of TCH attempts (including handover).

Counter Formula

(C901260022+C901260071+C901270022+C901270071+C901260025+C901260074+C901270025+C901270074)/(C901260020+C901260069+C901270020+C901270069+C901260023+C901260072+C901270023+C901270072)

1-16



Index TypeKPI

TypePercentage

BasisCell

1.2.18 306034 TCH assign failure rate(%)

DescriptionThis statistic provides the percentage of TCH assignment failure rate.

DefinitionTCH assignment failure rate equals to the number of TCH assignment failures divided bythe number of TCH attempts (including handover).

Counter Formula(C901260064+C901260089+C901270064+C901270089)/(C901260020+C901260069+C901270020+C901270069+C901260023+C901260072+C901270023+C901270072)

Index TypeKPI

TypePercentage

BasisCell

1.2.19 306046 TCH allocate failure rate(%)

DescriptionThis statistic provides the percentage of unsuccessful full rate and half rate TCH allocationswithin a cell, for both call originations and handover.

DefinitionTCH assignment failure rate equals to the number of TCH assignment failure (includinghandover) divided by the number of TCH assignment request (including handover).

1-17



Counter Formula

(C901260022+C901260071+C901270022+C901270071+C901260028+C901260052+C901260040+C901260029+C901260030+C901260031+C901260041+C901260042+C901260043+C901260053+C901260054+C901260055+C901260077+C901260078+C901260079+C901260080+C901260064+C901260089+C901270028+C901270052+C901270040+C901270029+C901270030+C901270031+C901270041+C901270042+C901270043+C901270053+C901270054+C901270055+C901270078+C901270079+C901270080+C901270077+C901270064+C901270089+C901260025+C901260034+C901260035+C901260036+C901260037+C901260046+C901260047+C901260048+C901260049+C901260058+C901260059+C901260060+C901260061+C901260074+C901260083+C901260084+C901260085+C901260086+C901270025+C901270034+C901270035+C901270036+C901270037+C901270046+C901270047+C901270048+C901270049+C901270058+C901270059+C901270060+C901270061+C901270074+C901270083+C901270084+C901270085+C901270086+(C901090012+C901090029+C901090031+C901090033+C901090035+C901090106)-(C901090019+C901090036+C901090107)+(C901260106+C901260107+C901260108+C901260112+C901260113+C901260114+C901260118+C901260119+C901260120+C901260124+C901260125+C901260126+C901270106+C901270107+C901270108+C901270112+C901270113+C901270114+C901270118+C901270119+C901270120+C901270124+C901270125+C901270126+C901260109+C901260110+C901260111+C901260115+C901260116+C901260117+C901260121+C901260122+C901260123+C901260127+C901260128+C901260129+C901270109+C901270110+C901270111+C901270115+C901270116+C901270117+C901270121+C901270122+C901270123+C901270127+C901270128+C901270129)+(C901260226+C901260230+C901270200+C901270204+C901260228+C901260232+C901270202+C901270206))/(C901260020+C901260069+C901270020+C901270069+C901260023+C901260072+C901270023+C901270072)

Index Type

KPI

Type

Percentage

Basis

Cell

1.2.20 306055 Successful TCH/PDTCH seizures (Previously TCHs)

Description

This statistic provides the number of TCH seizure attempt success after seizing SDCCH.It counts Seizure Complete message.

1-18



Definition

The number of TCH/F seizures success equals to the sum of seizure success whileassigning TCH/F as signaling channel, voice channel, and data channel.

Counter Formula

C901260014+C901260063+C901260088

Index Type

PI

Type

Counter

Basis

Cell

1.2.21 306054 Attempted Time Slots seizures (Previously TCHs)

Description

This statistic provides the number of TCH seizure attempts after seizing SDCCH. It counts“Seizure cmd” message.

Definition

The number of TCH/F seizure attempts equals to the number of TCH/F seizure successplus the number of TCH/F seizure failure.

Counter Formula

C901260014+C901260063+C901260088+C901260015+C901260064+C901260089

Index Type

PI

Type

Counter

Basis

Cell

1-19



1.2.22 306056 Attempted TCH Seizures meeting an TCH blockedstate

DescriptionThis statistic provides the number of congestion due to no TCH resource in TCH attemptsafter seizing SDCCH.

DefinitionThe number of TCH seizure failuremeeting an TCH blocked state equals to the sum of TCH(including TCH/F and TCH/H) seizure attempt failure while assigning signaling channel,voice channel, and data channel.


Index TypePI

TypeCounter

BasisCell

1.2.23 306032 Radio switch rate(%)

DescriptionThis statistic provides the percentage of call attempts that result in a successful TCHaccess. Network accesses which do not require a TCH are excluded; for example, locationupdates, SMS, and Supplementary Service attempts.

DefinitionRadio switch rate equals to the product of (1-SDCCH in congestion rate) multiplied by(1-TCH in congestion rate(include handover)).

Counter Formula(1-(C901250003+C901260003+C901270003)/(C901250001+C901260001+C901270001))*(1-(C901260022+C901260071+C901270022+C901270071+C901260025+C901260074+C901270025+C901270074)/(C901260020+C901260069+C901270020+C901270069+C901260023+C901260072+C901270023+C901270072))

1-20



Index TypeKPI

TypePercentage

BasisCell

1.2.24 306057 Mean busy time of allocated CS Time Slots

DescriptionThis statistic provides the arithmetic mean of busy time for CS time slot in a cell.

DefinitionMean busy time of CS time slot allocation equals to TCH busy time divided by the numberof TCH seizure success.

Counter Formula(C901080023+C901080015)/((C901260001+C901260020+C901260069+C901270001+C901270020+C901270069+C901260004+C901260023+C901260072+C901270004+C901270023+C901270072)-(C901260003+C901260022+C901260071+C901270003+C901270022+C901270071+C901260006+C901260025+C901260074+C901270006+C901270025+C901270074))

Index TypePI

TypeSecond

BasisCell

1.2.25 306042 TCH allocate no success number without handover

DescriptionThis statistic provides the number of TCH allocation no success after seizing SDCCHwithina counting cycle. It counts allocation failure message “Assignment Failure + Clear Request(radio interface failure)” sent from BSS to MSC. (TCH allocation no success include the

1-21



case of TCH allocation attempt failure after the calling and called sides seize SDCCH (radiointerface failure), this excludes the case to assign TCH as SDCCH during early allocationand different handover cases, including all trigger factors for assignment failure message.）

Definition

The number of TCH allocate no success number without handover equals to the sum ofnumber of TCH congestion (excluding handover), number of TCH (including TCH/F andTCH/H) allocation no success caused by channel activation failure, BTS connection failure,BIU connection failure, TCU connection failure while assigning voice and data channels,and the number of TCH (including TCH/F and TCH/H) assignment failure as voice anddata channels.

Counter Formula

C901260022+C901260071+C901270022+C901270071+C901260028+C901260052+C901260040+C901260029+C901260030+C901260031+C901260041+C901260042+C901260043+C901260053+C901260054+C901260055+C901260077+C901260078+C901260079+C901260080+C901260064+C901260089+C901270028+C901270052+C901270040+C901270029+C901270030+C901270031+C901270041+C901270042+C901270043+C901270053+C901270054+C901270055+C901270078+C901270079+C901270080+C901270077+C901270064+C901270089+C901260106+C901260107+C901260108+C901260112+C901260113+C901260114+C901260118+C901260119+C901260120+C901260124+C901260125+C901260126+C901270106+C901270107+C901270108+C901270112+C901270113+C901270114+C901270118+C901270119+C901270120+C901270124+C901270125+C901270126+C901260226+C901260230+C901270200+C901270204

Index Type

PI

Type

Counter

Basis

Cell

1.2.26 306044 TCH allocate no success number with handover

Description

This statistic provides the number of all TCH allocation no success to call TCH after seizingSDCCH within a count cycle. It counts incoming “Handover Failure + Assignment Failure”message. (Congestion includes the case of TCH establishment attempt failure after the

1-22



calling and called sides seize SDCCH, this excludes the case to assign TCH as SDCCHduring early allocation, including different handover and direct retry cases. ）

Definition

The number of TCH allocation no success with handover equals to the sum of number ofTCH congestion (including handover), the number of TCH (including TCH/F and TCH/H)allocation no success caused by channel activation failure, BTS connection failure, BIUconnection failure, TCU connection failure while assigning voice and data channels,oice and data channel handover, and the number of TCH (including TCH/F and TCH/H)assignment failure as voice and data channels.

Counter Formula

C901260022+C901260071+C901270022+C901270071+C901260028+C901260052+C901260040+C901260029+C901260030+C901260031+C901260041+C901260042+C901260043+C901260053+C901260054+C901260055+C901260077+C901260078+C901260079+C901260080+C901260064+C901260089+C901270028+C901270052+C901270040+C901270029+C901270030+C901270031+C901270041+C901270042+C901270043+C901270053+C901270054+C901270055+C901270078+C901270079+C901270080+C901270077+C901270064+C901270089+C901260025+C901260034+C901260035+C901260036+C901260037+C901260046+C901260047+C901260048+C901260049+C901260058+C901260059+C901260060+C901260061+C901260074+C901260083+C901260084+C901260085+C901260086+C901270025+C901270034+C901270035+C901270036+C901270037+C901270046+C901270047+C901270048+C901270049+C901270058+C901270059+C901270060+C901270061+C901270074+C901270083+C901270084+C901270085+C901270086+(C901090012+C901090029+C901090031+C901090033+C901090035+C901090106)-(C901090019+C901090036+C901090107)+(C901260106+C901260107+C901260108+C901260112+C901260113+C901260114+C901260118+C901260119+C901260120+C901260124+C901260125+C901260126+C901270106+C901270107+C901270108+C901270112+C901270113+C901270114+C901270118+C901270119+C901270120+C901270124+C901270125+C901270126+C901260109+C901260110+C901260111+C901260115+C901260116+C901260117+C901260121+C901260122+C901260123+C901260127+C901260128+C901260129+C901270109+C901270110+C901270111+C901270115+C901270116+C901270117+C901270121+C901270122+C901270123+C901270127+C901270128+C901270129)+(C901260226+C901260230+C901270200+C901270204+C901260228+C901260232+C901270202+C901270206)

Index Type

PI

Type

Counter

1-23



BasisCell

1.2.27 306045 TCH seize number in busy time

DescriptionThis statistic provides the number of calling or called assignment TCH success within acounting cycle. It counts Assignment Complete message. (excluding different handoversand direct retry.）

DefinitionThe number of TCH seize number in busy time equals to the number of success whileassigning TCH (including TCH/F and TCH/H) as voice channel plus the number of successwhile assigning TCH (including TCH/F and TCH/H) as data channel.

Counter FormulaC901260063+C901260088+C901270063+C901270088

Index TypePI

TypeCounter

BasisCell

1.3 Reliability

1.3.1 306007 TCH in call drop rate(exclude handover)(%)

DescriptionThis statistic provides the percentage of MSs which, having successfully accessed aTCH, subsequently experience an abnormal release caused by either radio or equipmentproblems.

DefinitionTCH in call drop rate (excluding handover) equals to the number of TCH call drop dividedby the number of TCH seizure (excluding handover).

1-24



Counter Formula(C901070051+C901070052)/(C901260063+C901260088+C901270063+C901270088)

Index TypeKPI

TypePercentage

BasisCell

1.3.2 306008 TCH in call drop rate(include handover)(%)

DescriptionThis statistic provides the percentage of MSs which, having successfully accessed aTCH, subsequently experience an abnormal release caused by either radio or equipmentproblems. This includes RF losses and losses during handovers.

DefinitionTCH in call drop rate (including handover) equals to the number of TCH call drop dividedby the number of TCH seizure (including handover).

Counter Formula(C901070051+C901070052)/(C901260063+C901260088+C901270063+C901270088+C901090019+C901090036+C901090107)

Index TypeKPI

TypePercentage

BasisCell

1.3.3 306023 TCH dropped call total number

DescriptionThis statistic provides the number of call drops due to different causes that occur after theTCH assignment is complete. It counts clear requests sent from radio side BSC to MSC.

1-25



Definition

The number of TCH call drop equals to the number of call drops caused by radio link failure,LAPD disconnection, and handover failure on TCH/F channel and TCH/H channel.

Counter Formula

C901070051+C901070052

Index Type

PI

Type

Counter

Basis

Cell

1.3.4 306039 Call drop rate of traffic

Description

This statistic provides the average interval between two call drops.

Definition

Call drop rate of traffic equals to the ratio between call traffic and call drops number withina count cycle.

Counter Formula

((C901080023+C901080015)/3600)*60/(C901070051+C901070052)

Index Type

PI

Type

Minute

Basis

Cell

1-26



1.4 Traffic

1.4.1 306015 SDCCH total traffic number (erl)

Description

This statistic provides the traffic generated due to all SDCCH seizure within a count cycle.It counts the interval between SDCCH allocation and SDCCH release.

Definition

SDCCH total traffic number (erl) equals to SDCCH busy time divided by 3600.

Counter Formula

C901080005/3600

Index Type

PI

Type

Erl

Basis

Cell

1.4.2 306059 Average TCH traffic number per channel and hour

Description

This statistic provides the traffic after TCH seizure. It counts the interval from assignmentcomplete to corresponding clear command on each TCH, and calculates sum for it.

Definition

TCH traffic equals to TCH (including TCH/F and TCH/H) busy time divided by 3600.

Counter Formula

(C901080023+C901080015)/(Gr*(C901080009+C901080028+C901080019))

Index Type

PI

1-27



TypeErl

BasisCell

1.4.3 306024 TCH total traffic number (erl)

DescriptionThis statistic provides the traffic after TCH seizure. It counts the interval from assignmentcomplete to corresponding clear command on each TCH, and calculates sum for it.

DefinitionTCH total traffic number (erl) equals to TCH (including TCH/F and TCH/H) busy timedivided by 3600.

Counter Formula(C901080023+C901080015)/3600

Index TypePI

TypeErl

BasisCell

1.5 Mobility

1.5.1 306009 Handover success rate(%)

DescriptionThis statistic provides the percentage of handovers that were attempted from the sourcecell (the cell for which This statistic is presented), that successfully reached the targetcell, and returned to the source cell successfully. A handover attempt is counted when ahandover command is sent to the MS. This key statistic includes inter-BSC Handovers.

Congestion on the target cell does not result in the BSS sending a handover command tothe mobile. Therefore this measurement is not impacted by target cell congestion.

1-28



DefinitionHandover success rate equals to the number of handover success divided by the numberof handover requests.

Counter Formula(C901090019+C901090036+C901090107+C901090003+C901090010)/(C901090012+C901090014+C901090016+C901090018+C901090029+C901090031+C901090033+C901090035+C901090106+C901090002+C901090009)

Index TypeKPI

TypePercentage

BasisCell

1.5.2 306010 Dual band handover success rate(%)

DescriptionThis statistic provides dual-band handover success rate.

DefinitionDual band handover success rate equals to the number of dual-band handover successdivided by the number of dual-band handover requests.

Counter Formula(C901090051+C901090057+C901090071+C901090077+C901090083+C901090089+C901090095+C901090101)/(C901090050+C901090056+C901090070+C901090076+C901090082+C901090088+C901090094+C901090100)

Index TypeKPI

TypePercentage

BasisCell

1-29



1.5.3 306025 Total number of handover request

DescriptionThis statistic provides the number of all handover requests generated in a cell within acount cycle.

DefinitionThe total number of handover request equals to the sum of incoming and outgoingintra-cell, intra-BSC, and inter-BSC executions.

Counter FormulaC901090012+C901090014+C901090016+C901090018+C901090029+C901090031+C901090033+C901090035+C901090106+C901090002+C901090009

Index TypePI

TypeCounter

BasisCell

1.5.4 306026 Total number of successful handover

DescriptionThis statistic provides the number of handover success in a cell within a count cycle.

DefinitionThe total number of successful handover equals to the sum of incoming and outgoingintra-cell, intra-BSC, and inter-BSC handover success.

Counter FormulaC901090019+C901090036+C901090107+C901090003+C901090010

Index TypePI

TypeCounter

1-30



BasisCell

1.5.5 306027 Total number of dual band handover attemption

DescriptionThis statistic provides the number of dual band handover attempts (handover between900M and 1800M).

DefinitionThe total number of dual band handover attemption equals to the sum of dual bandincoming executions from same layer, upper layer, lower layer, and undefined layer.

Counter FormulaC901090050+C901090056+C901090070+C901090076+C901090082+C901090088+C901090094+C901090100

Index TypePI

TypeCounter

BasisCell

1.5.6 306028 Total number of successful dual band handover

DescriptionThis statistic provides the number of dual band handover success (handover between 900M and 1800 M).

DefinitionThe total number of successful dual band handover equals to the sum of dual bandincoming handover success from same layer, upper layer, lower layer, and undefinedlayer.

Counter FormulaC901090051+C901090057+C901090071+C901090077+C901090083+C901090089+C901090095+C901090101

1-31



Index TypePI

TypeCounter

BasisCell

1.5.7 306035 Handover in success rate(%)

DescriptionThis statistic provides the percentage of incoming intra-cell, intra-BSC and inter-BSChandover commands that are sent over the air interface, these handover commands helpthe MS to successfully access the target channel.

DefinitionHandover in success rate equals to the number of intra-cell, intra-BSC, and inter-BSCincoming success divided by the number of intra-cell, intra-BSC, and inter-BSC incomingrequests.

Counter Formula(C901090019+C901090036+C901090107)/(C901090012+C901090029+C901090031+C901090033+C901090035+C901090106)

Index TypePI

TypePercentage

BasisCell

1.5.8 306036 Handover out success rate(%)

DescriptionThis statistic provides the percentage of outgoing intra-cell, intra-BSC and inter-BSChandover commands that are sent over the air interface, these handover commands helpthe MS to access the target channel.

1-32



Definition

Outgoing success rate equals to the number of intra-cell, intra-BSC, and inter-BSCoutgoing success divided by the number of intra-cell, intra-BSC, and inter-BSC outgoingrequests.

Counter Formula

(C901090003+C901090010+C901090107)/(C901090002+C901090009+C901090106)

Index Type

PI

Type

Percentage

Basis

Cell

1.5.9 306033 Handover request rate in busy time(%)

Description

This statistic provides the handover attempt rate.

Definition

Handover request rate in busy time equals to the number of outgoing execution divided bythe number of TCH attempt (including handover).

Counter Formula

(C901090002+C901090009+C901090106)/(C901260020+C901260069+C901270020+C901270069+C901260023+C901260072+C901270023+C901270072)

Index Type

PI

Type

Percentage

Basis

Cell

1-33



1.5.10 306048 Successful Internal Handovers

DescriptionThis statistic provides the number of successful intra-BSC and intra-cell handovers.

DefinitionThe number of successful Internal Handovers equals to the number of intra-cell handoversuccess plus the number of inter-cell handover success, controlled by BSC.


Index TypePI

TypeCounter

BasisCell

1.5.11 306047 Unsuccessful Internal Handovers, intra-CELL

DescriptionThis statistic provides the number of intra-cell handover failure among channels on a BTSduring calling. It counts handover failure, where source cell is same as target cell.

DefinitionThe number of intra-cell handover failure equals to the number of intra-cell handoverexecutions minus the number of intra-cell handover success.

Counter FormulaC901090106-C901090107

Index TypePI

TypeCounter

1-34



BasisCell

1.6 Measurement Result

1.6.1 306049 Mean number of idle TCHs with interference band 1

DescriptionThis statistic provides the average number of idle TCH with interference band 1 (<-108dBm).

DefinitionThe number of average idle TCH with interference band 1 equals to the number sum ofidle TCH/F and TCH/H with interference band 1 in carrier.


Index TypePI

TypeCounter

BasisCell


DescriptionThis statistic provides the average quantity of idle TCH with interference band 2 (>-108dBm/<-105 dBm).



1-35



Index TypePI

TypeCounter

BasisCell





Index TypePI

TypeCounter

BasisCell




1-36




Index TypePI

TypeCounter

BasisCell


DescriptionThis statistic provides the average quantity of idle TCH with interference band 5 (>-95dBm).



Index TypePI

TypeCounter

BasisCell

1.6.6 306037 Radio switch rate(exclude handover)(%)

DescriptionThis statistic provides the percentage of call attempts that result in a successful TCHaccess (exclude handover). Network accesses which do not require a TCH are excluded;for example, location updates, SMS, and Supplementary Service attempts.

1-37



Definition

Radio switch rate(exclude handover) equals to the product of (1-SDCCH in congestionrate) multiplied by (1-TCH in congestion rate(exclude handover)).

Counter Formula

(1-(C901250003+C901260003+C901270003)/(C901250001+C901260001+C901270001))*(1-(C901260022+C901260071+C901270022+C901270071)/(C901260020+C901260069+C901270020+C901270069))

Index Type

KPI

Type

Percentage

Basis

Cell

1.6.7 306061 Radio Capacity

Description

Radio Capacity

Definition

The radio capacity from the Erlang table according to the number of voice channels.

Counter Formula

C900090006/10000

Index Type

PI

Type

erl

Basis

Cell

1-38



1.6.8 306062 Radio utilization rate

DescriptionRadio utilization rate

DefinitionThe Radio utilization rate equals the radio utilization capacity divided by the radio capacity.

Counter Formula((C901080023+C901080015)/Gr)/(C900090006/10000)

Index TypePI

TypePercentage

BasisCell

1.6.9 306401 Bad cell number

DescriptionBad cell number

DefinitionThe number of bad quality cell.

Counter Formula((C901080023+C901080015)/(Gr*(C901080009+C901080028+C901080019))>0.1)&&(((C901260022+C901260071+C901270022+C901270071)/(C901260020+C901260069+C901270020+C901270069)>0.05)||((C901070051+C901070052)/(C901260063+C901260088+C901270063+C901270088+C901090019+C901090036+C901090107)>0.03))

Index TypePI

TypeCounter

1-39



Basis

Cell

1.6.10 306402 Busy cell number

Description

Busy cell number

Definition

The number of cell which the average TCH traffic number per channel and hour is morethan 0.6.

Counter Formula

(C901080023+C901080015)/(Gr*(C901080009+C901080028+C901080019))>0.6

Index Type

PI

Type

Counter

Basis

Cell

1.6.11 306403 Idle cell number

Description

Idle cell number

Definition

The number of cell which the average TCH traffic number per channel and hour is lessthan 0.1.

Counter Formula

(C901080023+C901080015)/(Gr*(C901080009+C901080028+C901080019))<0.1

Index Type

PI

1-40



Type

Counter

Basis

Cell

1.6.12 306404 Total cell number(accord with yidong condition)

Description

Total cell number(accord with yidong condition)

Definition

The total number of cell which the average TCH traffic number per channel and hour ismore than 0.1.

Counter Formula

(C901080023+C901080015)/(Gr*(C901080009+C901080028+C901080019))>0.1

Index Type

PI

Type

Counter

Basis

Cell

1.6.13 306451 The percent of bad cell

Description

The percent of bad cell

Definition

The percent of bad cell equals the bad cell number divided by the total cell number.

Counter Formula

P306401/P306404

1-41



Index Type

PI

Type

Counter

Basis

Cell

1-42


Chapter 2Introduction of KPI in PSDomainThis chapter introduces description, definition, formula, and unit for several kinds of KPIin PS domain.

Table of Contents

LLC ............................................................................................................................2-1TBF............................................................................................................................2-3RLC..........................................................................................................................2-17

2.1 LLC

2.1.1 306528 Ratio of Downlink LLC Signal Frame Discarded(%)

Description

This statistic provides the percentage of the discarded downlink LLC signaling frame.

Definition

Ratio of Downlink LLC Signal Frame Discarded equals to the number of DL signaling LLCframe discard due to full buffer, exhausted lifecycle, and other exceptions divided by thenumber of DL signaling LLC frame.

Counter Formula

(C901020016+C901020017+C901020018)/C901020015

Index Type

PI

Type

Percentage

Basis

Cell

2-1



2.1.2 306529 Ratio of Downlink GPRS Data Frame Discarded(%)

DescriptionThis statistic provides the percentage of the discarded DLGPRS data frame.

DefinitionRatio of Downlink GPRS Data Frame Discarded equals to the number of DL GPRS framediscard due to full buffer, exhausted lifecycle, and other exceptions divided by the numberof DL GPRS frame transmitted.

Counter Formula(C901020052+C901020053+C901020054)/C901020051

Index TypePI

TypePercentage

BasisCell

2.1.3 306530 Ratio of Downlink EGPRS Data Frame Discarded(%)

DescriptionThis statistic provides the percentage of the discarded DL EDGE data frame.

DefinitionRatio of Downlink EGPRS Data Frame Discarded equals to the number of DL EDGE framediscard due to full buffer, exhausted lifecycle, and other exceptions divided by the numberof DL EDGE frame transmitted.

Counter Formula(C901020011+C901020012+C901020013)/C901020010

Index TypePI

TypePercentage

2-2


Chapter 2 Introduction of KPI in PS Domain

BasisCell

2.2 TBF

2.2.1 306501 Ratio of Uplink TBF Establish Link successfully(%)

DescriptionThis statistic provides UL GPRS signaling TBF, UL EDGE signaling TBF, UL GPRS dataTBF, UL EDGE data TBF establishment success rate. This is the important performanceindex on data service availability to check the condition of data access success in differentcells.

DefinitionRatio of Uplink TBF Establish Link successfully equals to the number of UL TBFestablishment success divided by the number of UL TBF establishment requests.

Counter Formula(C901010020+C901010041+C901010021+C901010042+(C901190049-C901190050)+(C901200049-C901200050)+(C901190036-C901190037)+(C901200036-C901200037)+(C901010001+C901010022))/(C901010003+C901010004+C901010005+C901010009+C901010024+C901010025+C901010026+C901010030+C901190049+C901200049+C901190036+C901200036+C901010001+C901010022)

Index TypePI

TypePercentage

BasisCell

2.2.2 306502 Ratio of Downlink TBF Establish Link successfully(%)

DescriptionThis statistic provides DL GPRS signaling TBF, DL EDGE signaling TBF, DL GPRS dataTBF, DL EDGE data TBF establishment success rate. this is the important performanceindex on data service availability to check the condition of data access success in differentcells.

2-3



Definition

Ratio of Downlink TBF Establish Link successfully equals to the number of DL TBFestablishment success divided by the number of DL TBF establishment requests.

Counter Formula

(C901000021+C901000043+C901000022+C901000044+(C901170021-C901170022)+(C901180021-C901180022)+(C901170034-C901170035)+(C901180034-C901180035)+C901000001+C901000023)/(C901000002+C901000003+C901000004+C901000008+C901000024+C901000025+C901000026+C901000030+C901170021+C901180021+C901170034+C901180034+C901000001+C901000023)

Index Type

PI

Type

Percentage

Basis

Cell

2.2.3 306503 Percent of The Uplink Signal TBF in Uplink TBF(%)

Description

Based on the purpose, MS establishes two kinds of TBF: signaling TBF and data TBF.UL signaling TBF share indicates the percentage of UL signaling TBF vs. UL TBF (ULsignaling TBF and data TBF).

Definition

Percent of The Uplink Signal TBF in Uplink TBF equals to the number of UL signaling TBFestablishment divided by the number of UL TBF establishment.

Counter Formula

(C901010020+C901010041)/(C901010020+C901010041+C901010021+C901010042)

Index Type

PI

Type

Percentage

2-4



Basis

Cell

2.2.4 306504 Percent of The Downlink Signal TBF in DownlinkTBF(%)

Description

Based on the purpose, MS establishes two kinds of TBF: signaling TBF and data TBF.DL signaling TBF share indicates the percentage of DL signaling TBF vs. DL TBF (DLsignaling TBF and data TBF).

Definition

Percent of The Downlink Signal TBF in Downlink TBF equals to the number of DL signalingTBF establishment divided by the number of DL TBF establishment.

Counter Formula

(C901000021+C901000043)/(C901000021+C901000043+C901000022+C901000044)

Index Type

PI

Index Type

PI

Type

Percentage

Basis

Cell

2.2.5 306505 Percent of The GPRS Uplink Data TBF in Uplink DataTBF(%)

Description

This statistic provides the percentage of the number of UL GPRS data TBF establishmentvs. the number of GPRS and EDGE UL data TBF establishment.

2-5



DefinitionPercent of The GPRS Uplink Data TBF in Uplink Data TBF equals to the number of ULGPRS data TBF establishment divided by the number of UL GPRS and EDGE data TBFestablishment.

Counter FormulaC901010021/(C901010021+C901010042)

Index TypePI

TypePercentage

BasisCell

2.2.6 306506 Percent of The GPRS Downlink Data TBF in DownlinkData TBF(%)

DescriptionThis statistic provides the percentage of the number of DL GPRS data TBF establishmentvs. the number of DL GPRS and EDGE data TBF establishment.

DefinitionPercent of The GPRS Downlink Data TBF in Downlink Data TBF equals to the number ofDL GPRS data TBF establishment divided by the number of DL GPRS and EDGE dataTBF establishment.


Index TypePI

TypePercentage

BasisCell

2-6



2.2.7 306531 Ratio of Uplink Signal TBF Failure(%)

Description

This statistic provides TBF percentage released after UL signaling TBF establishmentsuccess. By this performance index, it can determine whether interference, packet loss,wrong parameter setting, or instable link failure will occur in network.

Definition

Ratio of Uplink Signal TBF Failure equals to the number of UL signaling TBF exceptionalrelease divided by the number of UL signaling TBF establishment.

Counter Formula

(C901010051+C901010052+C901010053+C901010054+C901010055+C901010057+C901010058+C901010059+C901010060+C901010061)/(C901010020+C901010041)

Index Type

PI

Type

Percentage

Basis

Cell

2.2.8 306534 Ratio of Downlink Signal TBF Failure(%)

Description

This statistic provides TBF percentage released after DL signaling TBF establishmentsuccess. By this performance index, it can determine whether interference, packet loss,wrong parameter setting, or instable link failure will occur in network.

Definition

Ratio of Downlink Signal TBF Failure equals to the number of DL signaling TBF exceptionalrelease divided by the number of DL signaling TBF establishment.

Counter Formula

(C901000053+C901000054+C901000055+C901000056+C901000057+C901000059+C901000060+C901000061+C901000062+C901000063)/(C901000021+C901000043)

2-7



Index Type

PI

Type

Percentage

Basis

Cell

2.2.9 306532 Ratio of Uplink GPRS Data TBF Failure(%)

Description

This statistic provides TBF percentage released after UL GPRS data TBF establishmentsuccess. By this performance index, it can determine whether interference, packet loss,wrong parameter setting, or instable link failure will occur in network.

Definition

Ratio of Uplink GPRS Data TBF Failure equals to the number of UL GPRS data TBFexceptional release divided by the number of UL GPRS data TBF establishment.

Counter Formula

(C901010015+C901010016+C901010017+C901010018+C901010019-(C901010051+C901010052+C901010053+C901010054+C901010055))/(C901010021)

Index Type

PI

Type

Percentage

Basis

Cell

2.2.10 306535 Ratio of Downlink GPRS Data TBF Failure(%)

Description

This statistic provides TBF percentage released after DL GPRS data TBF establishmentsuccess. By this performance index, it can determine whether interference, packet loss,wrong parameter setting, or instable link failure will occur in network.

2-8



DefinitionRatio of Downlink GPRS Data TBF Failure equals to the number of DL GPRS data TBFexceptional release divided by the number of DL GPRS data TBF establishment.

Counter Formula(C901000016+C901000017+C901000018+C901000019+C901000020-(C901000053+C901000054+C901000055+C901000056+C901000057))/(C901000022)

Index TypePI

TypePercentage

BasisCell

2.2.11 306533 Ratio of Uplink EGPRS Data TBF Failure(%)

DescriptionThis statistic provides TBF percentage released after UL EDGE data TBF establishmentsuccess. By this performance index, it can determine whether interference, packet loss,wrong parameter setting, or instable link failure will occur in network.

DefinitionRatio of Uplink EGPRS Data TBF Failure equals to the number of UL EDGE data TBFexceptional release divided by the number of UL EDGE data TBF establishment.

Counter Formula(C901010036+C901010037+C901010038+C901010039+C901010040-(C901010057+C901010058+C901010059+C901010060+C901010061))/(C901010042)

Index TypePI

TypePercentage

BasisCell

2-9



2.2.12 306536 Ratio of Downlink EGPRS Data TBF Failure(%)

Description

This statistic provides TBF percentage released after UL EDGE data TBF establishmentsuccess. By this performance index, it can determine whether interference, packet loss,wrong parameter setting, or instable link failure will occur in network.

Definition

Ratio of Downlink EGPRS Data TBF Failure equals to the number of DL EDGE data TBFexceptional release divided by the number of DL EDGE data TBF establishment.

Counter Formula

(C901000038+C901000039+C901000040+C901000041+C901000042-(C901000059+C901000060+C901000061+C901000062+C901000063))/(C901000044)

Index Type

PI

Type

Percentage

Basis

Cell

2.2.13 306518 Mean Rate of GPRS Uplink Data TBF(kbps)

Description

This statistic provides LLC frame throughput carried by GPRS UL data TBF in unit time.

Definition

Mean Rate of GPRS Uplink Data TBF equals to LLC frame throughput carried by GPRSUL data TBF (bytes multiplied by 8) divided by GPRS UL data TBF duration.

Counter Formula

C901020030*8/C901020032

Index Type

PI

2-10



Type

Kbps

Basis

Cell

2.2.14 306519 Mean Rate of GPRS Downlink Data TBF(kbps)

Description

This statistic provides LLC frame throughput carried by GPRS DL data TBF in unit time.

Definition

Mean Rate of GPRS Downlink Data TBF equals to LLC frame throughput carried by GPRSDL data TBF (bytes multiplied by 8) divided by GPRS DL data TBF duration.

Counter Formula

C901020033*8/C901020035

Index Type

PI

Type

Kbps

Basis

Cell

2.2.15 306516 Percent of Uplink GPRS Data TBF Establish onPACCH Channel(%)

Description

This statistic provides the percentage of UL GPRS data TBF Establishment on PACCH.

Definition

The percent of Uplink GPRSData TBF Establish on PACCHChannel equals to the numberof UL GPRS data TBF establishment on PACCH divided by the number of UL GPRS TBF(including signaling TBF and data TBF) on PACCH.

2-11



Counter Formula

C901010062/C901010008

Index Type

PI

Type

Percentage

Basis

Cell

2.2.16 306517 Percent of Downlink GPRS Data TBF Establish onPACCH Channel(%)

Description

This statistic provides the percentage of the DLGPRS data TBF Establishment on PACCH.

Definition

The percent of Downlink GPRS Data TBF Establish on PACCH Channel equals to thenumber of DL GPRS data TBF establishment on PACCH divided by the number of DLGPRS TBF (including signaling TBF and data TBF) on PACCH.

Counter Formula

C901000064/C901000007

Index Type

PI

Type

Percentage

Basis

Cell

2-12



2.2.17 306522 Percent of Uplink EGPRS Data TBF Establish onPACCH Channel(%)

Description

This statistic provides the percentage of the UL EGPRS data TBF Establishment onPACCH.

Definition

The percent of uplink EGPRSData TBFEstablish on PACCH channel equals to the numberof UL EGPRS data TBF establishment on PACCH divided by the number of UL EGPRSTBF (including signaling TBF and data TBF) on PACCH.

Counter Formula

C901010063/C901010029

Index Type

PI

Type

Percentage

Basis

Cell

2.2.18 306523 Percent of Downlink EGPRS Data TBF Establish onPACCH Channel(%)

Description

This statistic provides the percentage of the DL EGPRS data TBF Establishment onPACCH.

Definition

The percent of downlink EGPRS Data TBF Establish on PACCH channel equals to thenumber of DL EGPRS data TBF establishment on PACCH divided by the number of DLEGPRS TBF (including signaling TBF and data TBF) on PACCH.

Counter Formula

C901000065/C901000029

2-13



Index TypePI

TypePercentage

BasisCell

2.2.19 306524 Mean Rate of EGPRS Uplink Data TBF(kbps)

DescriptionThis statistic provides the LLC frame throughput carried by EGPRS UL data TBF in unittime.

DefinitionMean Rate of EGPRS Uplink Data TBF equals to LLC frame throughput carried by EGPRSUL data TBF (bytes multiplied by 8) divided by EGPRS UL data TBF duration.

Counter FormulaC901020040*8/C901020042

Index TypePI

TypeKbps

BasisCell

2.2.20 306525 Mean Rate of EGPRS Downlink Data TBF(kbps)

DescriptionThis statistic provides LLC frame throughput carried by EGPRS DL data TBF in unit time.

DefinitionMean Rate of EGPRS Downlink Data TBF equals to LLC frame throughput carried byEGPRS DL data TBF (bytes multiplied by 8) divided by EGPRS DL data TBF duration.

2-14



Counter Formula

C901020043*8/C901020045

Index Type

PI

Type

Kbps

Basis

Cell

2.2.21 306537 UL GPRS TBF Drop Rate

Description

UL GPRS TBF Drop Rate

Definition

The number of abnormal releases of GPRS uplink TBF divided by the number of GPRSuplink TBF establishment.

Counter Formula

C901010015/(C901010020+C901010021+(C901190049-C901190050)+(C901190036-C901190037)+C901010001+C901010002)

Index Type

PI

Type

Percentage

Basis

Cell

2.2.22 306538 DL GPRS TBF Drop Rate

Description

DL GPRS TBF Drop Rate

2-15



Definition

The number of abnormal releases of GPRS downlink TBF divided by the number of GPRSdownlink TBF establishment.

Counter Formula

C901000016/(C901000021+C901000022+(C901170021-C901170022)+(C901170034-C901170035)+C901000001)

Index Type

PI

Type

Percentage

Basis

Cell

2.2.23 306539 UL EGPRS TBF Drop Rate

Description

UL EGPRS TBF Drop Rate

Definition

The number of abnormal releases of EGPRS uplink TBF divided by the number of EGPRSuplink TBF establishment.

Counter Formula

C901010036/(C901010041+C901010042+(C901200049-C901200050)+(C901200036-C901200037)+C901010022+C901010023)

Index Type

PI

Type

Percentage

Basis

Cell

2-16



2.2.24 306540 DL EGPRS TBF Drop Rate

DescriptionDL EGPRS TBF Drop Rate

DefinitionThe number of abnormal releases of EGPRS downlink TBF divided by the number ofEGPRS downlink TBF establishment.

Counter FormulaC901000038/(C901000043+C901000044+(C901180021-C901180022)+(C901180034-C901180035)+C901000023)

Index TypePI

TypePercentage

BasisCell

2.3 RLC

2.3.1 306509 Ratio of usage of Uplink Packet Channel(%)

DescriptionThis statistic provides the percentage of UL PDCH usage.

DefinitionRatio of usage of Uplink Packet Channel equals to the number of non-null RLF datablocks (including control block and data block) received on PDCH divided by the numberof general RLC blocks (non-null RLC blocks and dummy control blocks).

Counter Formula(C901030096+C901030043)/(C901030043+C901030096+C901160016)

Index TypePI

2-17



TypePercentage

BasisCell

2.3.2 306510 Ratio of usage of Downlink Packet Channel(%)

DescriptionThis statistic provides the percentage of DL PDCH usage.

DefinitionRatio of usage of Downlink Packet Channel equals to the number of non-null RLC datablocks (including control block and data block) transmitted on PDCH divided by the numberof general RLC blocks (non-null RLC blocks and dummy control blocks).

Counter Formula(C901030001+C901030097)/(C901030001+C901030097+C901160015)

Index TypePI

TypePercentage

BasisCell

2.3.3 306511 Ratio of usage of Abis bandwidth(%)

DescriptionThis statistic provides the Ratio of usage of Abis bandwidth.

DefinitionThe number of data blocks transmitted by given Abis bandwidth divided by the number ofeffective RLC data blocks (including control block and data block) transmitted.


2-18



Index Type

PI

Type

Percentage

Basis

Cell

2.3.4 306512 Throughput of Cell LLC Layer Uplink Data(bps)

Description

This statistic provides the effective protocol data flow received at the upper layer by packetUL channel.

Definition

Throughput of Cell LLC Layer Uplink Data equals to the quantity of effective protocol datareceived at upper layer by packet UL channel in unit time.

Counter Formula

C901020029*8/(60*60)

Index Type

PI

Type

bps

Basis

Cell

2.3.5 306513 Mean Throughput of Each Channel LLC Layer UplinkData(bps)

Description

This statistic provides the mean throughput of each channel LLC layer uplink data.

2-19



Definition

Mean throughput of each channel LLC layer uplink data equals to LLC UL data throughputdivided by the average number of available channel.

Counter Formula

C901020029*8/(60*60*C901040003)

Index Type

PI

Type

bps

Basis

Cell

2.3.6 306514 Throughput of Cell LLC Layer Downlink Data(bps)

Description

This statistic provides the effective protocol data flow received at the upper layer by packetDL channel.

Definition

Throughput of Cell LLC Layer Downlink Data equals to the quantity of effective protocoldata transmitted at upper layer by packet DL channel in unit time.

Counter Formula

C901020028*8/(60*60)

Index Type

PI

Type

bps

Basis

Cell

2-20



2.3.7 306515 Mean Throughput of Each Channel LLC LayerDownlink Data(bps)

Description

This statistic provides the mean throughput of each channel LLC layer downlink data.

Definition

Mean throughput of each channel LLC layer downlink data equals to LLC DL datathroughput divided by the average number of available channel.

Counter Formula

C901020028*8/(60*60*C901040003)

Index Type

PI

Type

bps

Basis

Cell

2.3.8 306520 Ratio of GPRS RLC Uplink block resent(%)

Description

This statistic provides UL GPRS RLC retransmission rate, the most important indicatorto reflect GPRS UL service condition, and to indicate whether instability, congestion, orinterference occurs in the system.

Definition

Ratio of GPRS RLC Uplink block resent equals to the number of NACK data block receivedby UL GPRS TBF divided by the number of effective data block received by UL GPRS TBF.

Counter Formula

C901020037/C901020036

Index Type

PI

2-21



Type

Percentage

Basis

Cell

2.3.9 306521 Ratio of GPRS RLC Downlink block resent(%)

Description

This statistic provides DL GPRS RLC retransmission rate, the most important indicatorto reflect GPRS DL service condition, and to indicate whether instability, congestion, orinterference occurs in the system.

Definition

Ratio of GPRS RLC Downlink block resent equals to the number of NACK data blocktransmitted by DL GPRS TBF divided by the number of effective data block transmitted byDL GPRS TBF.

Counter Formula

C901020039/C901020038

Index Type

PI

Type

Percentage

Basis

Cell

2.3.10 306526 Ratio of EGPRS RLC Uplink block resent(%)

Description

This statistic provides UL EGPRS RLC retransmission rate, the most important indicatorto reflect EGPRS UL service condition, and to indicate whether instability, congestion, orinterference occurs in the system.

2-22



DefinitionRatio of EGPRS RLC Uplink block resent equals to the number of NACK data blockreceived by UL EGPRS TBF divided by the number of effective data block received byUL EGPRS TBF.

Counter FormulaC901020047/C901020046

Index TypePI

TypePercentage

BasisCell

2.3.11 306527 Ratio of EGPRS RLC Downlink block resent(%)

DescriptionThis statistic provides UL EGPRS RLC retransmission rate, the most important indicatorto reflect EGPRS UL service condition, and to indicate whether instability, congestion, orinterference occurs in the system.

DefinitionRatio of EGPRS RLC Downlink block resent equals to the number of NACK data blocktransmitted by DL EGPRS TBF divided by the number of effective data block transmittedby DL EGPRS TBF.

Counter FormulaC901020049/C901020048

Index TypePI

TypePercentage

BasisCell

2-23



2.3.12 306507 Percent of Overhead in Uplink Packet Channel RLCSignal(%)

DescriptionThis statistic provides the percentage of radio Link Control blocks transmitted by the PCU(UL).

DefinitionPercent of Overhead in Uplink Packet Channel RLC Signal equals to the number of RLCcontrol blocks (excluding control blank frame) on PACCH divided by the sum of UL RLCcontrol blocks (excluding control blank frame) and data blocks (including retransmittedRLC blocks, RLC blocks to be determined, and first transmitted RLC blocks).


Index TypePI

TypePercentage

BasisCell

2.3.13 306508 Percent of Overhead in Downlink Packet ChannelRLC Signal(%)

DescriptionThis statistic provides the percentage of radio Link Control blocks transmitted by the PCU(DL).

DefinitionPercent of Overhead in Downlink Packet Channel RLC Signal equals to the number of rLCcontrol blocks (excluding control blank frame) on PACCH divided by the sum of DL RLCcontrol blocks (excluding control blank frame) and data blocks (including retransmittedRLC blocks, RLC blocks to be determined, and first transmitted RLC blocks).


2-24



Index Type

PI

Type

Percentage

Basis

Cell

2-25



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2-26


GlossaryBIU- aBis Interface Unit

BSC- Base Station Controller

BSS- Base Station Subsystem

CS- Circuit Switched

DL- Downlink

EDGE- Enhanced Data rates for GSM Evolution

GPRS- General Packet Radio Service

IMSI- International Mobile Subscriber Identity

KPI- Key Performance Index

LAPD- Link Access Procedure for D-channel

LLC- Logic Link Control

MS- Mobile Station

MSC- Mobile Switching Center

NACK- None Acknowledgment

PACCH- Packet Associated Control Channel

PCU- PacketControl Unit

PDCH- Packet Data Channel

I



PS- Packet Switched

RLC- Radio Link Control

SDCCH- Standalone Dedicated Control Channel

TBF- Temporary Block Flow

TCH- Traffic Channel

TRX- Transceiver

UL- Uplink

II


ZXG10 iBSC (V6.30.103) KPI Reference_520529

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