022-EVDO Rev A KPI

EVDO Rev A KPI

ZTE University

Content

Call Processing KPI

RAN Performance KPI

Call Processing KPI

1x EVDO Session Setup Time

AT Initiated Connection Setup Time

AN Initiated Connection Setup Time PPP Session Setup

Time

PPP Setup Failure Rate

1x EVDO Session Setup Time(1)

Definition

The interval of AT sending UATIRequest to receiving

ConfigurationComplete

Actual Test Results:

Qualcomm’s recommended value: 90% test results are less

than or equal to 3000ms

Actual test: 2200~2700ms (on average)

1x EVDO Session Setup Time(2)

Flow chart

AT Initiated Connection Setup Time(1)

Definition

The interval from AT sending ConnectionRequest to

receiving TrafficChannelComplete

Actual test results:




AT Initiated Connection Setup Time(2)

Flow chart

AN Initiated Connection Setup Time

Definition

The interval from AN sending Page to receiving

TrafficChannelComplete




Actual test: 1780ms (on average)

AN Initiated Connection Setup Time

PPP Session Setup Time(1)

Definition

The interval from AN sending the first LCP Config Req to

receiving the last IPCP Config Ack





PPP Session Setup Time(2)

PPP Setup Failure Rate

Definition

Num of failed PPP setups / num of total PPP setup

attempts


ZTE’s recommended value: <3%

Actual test: 0%

Content

Call Processing KPI

RAN Performance KPI

RAN Performance KPI

Call KPI

Call Drop KPI

Reverse Handoff KPI

Virtual handoff KPI

Release KPI

Session KPI

Call KPI (1)

AT Originated Connection Flow:

Call KPI (2)

AN Originated Connection Flow:

Call KPI (3)

AT Originated Fast Connection Flow:

Call KPI (4)

Fast connection refers to the following:

Only AN originates fast connection.

Fast connection does not need signaling of the

Page/ConnectionRequest message.

AN may select whether to support fast connection, while AT

must support it.

AN originates fast connection only when AN can measure

the current position of AT.

Call KPI (5)

Call KPI needs to collect the following variables.

CMO_CallTotalNum: Total number of AT call

CMO_CallSNum: Success number of AT originating call

CMO_ExtInterruptNum: External interruption number of AT originating call

CMO_BlockFNum: Failure number of AT originating call blocked

CMO_OtherFNum: Other failure number of AT originating call

CMT_CallTotalNum: Total number of AN originating call

CMT_CallSNum: Success number of AN originating call

CMT_ExtInterruptNum: External interruption number of AN originating call

CMT_BlockFNum: Failure number of AN originating call blocked

CMT_OtherFNum: Other failure number of AN originating call

FMT_CallTotalNum: Total number of fast originating call

FMT_CallSNum: Success number of fast originating call

FMT_ExtInterruptNum: External interruption number of fast originating call

FMT_BlockFNum: Failure number of fast originating call blocked

FMT_OtherFNum: Other failure number of fast originating call

Call KPI (6)

Statistical method:

CMO_CallTotalNum: At Counter 1, when AN receives

ConnectionRequest and successfully sends AcAck,

CMO_CallTotalNum is reported.

CMO_CallSNum: At Counter 2, when AN receives

TrafficChannelComplete, CMO_CallSNum is reported.

CMO_ExtInterruptNum: When AN receives ReleaseRequest from

AT or PDSN, CMO_ExtInterruptNum is reported.

CMO_BlockFNum: When resource shortage (including CE,

MacIndex and power) results in connection failure,

CMO_BlockFNum is reported.

CMO_OtherFNum: When some unknown causes result in

connection failure, CMO_OtherFNum is reported.

Call KPI (7)

Statistical method:

CMT_CallTotalNum: At Counter 3, when AN sends Paging and receives

ConnectionRequest from AT, CMT_CallTotalNum is reported.

CMT_CallSNum: At Counter 4, the method is same as AT’s related index.

CMT_ExtInterruptNum: The method is same as AT’s related index.

CMT_BlockFNum: The method is same as AT’s related index.

CMT_OtherFNum: The method is same as AT’s related index.

FMT_CallTotalNum: At Counter 5, when AN directly establishes

connection and assigns resource to AT without sending Page,

FMT_CallTotalNum is reported.

FMT_CallSNum: At Counter 6, the method is same as AT’s related index

FMT_ExtInterruptNum:The method is same as AT’s related index

FMT_BlockFNum: The method is same as AT’s related index

FMT_OtherFNum: The method is same as AT’s related index

Call KPI (8)

KPI Calculation Formula

Call Success Rate = (CMO_CallSNum +CMT_CallSNum +

FMT_CallSNum) / (CMT_CallTotalNum+ CMT_CallTotalNum

+FMT_CallTotalNum)

External Interruption Rate = (CMO_ExtInterruptNum +

CMT_ExtInterruptNum + FMT_ExtInterruptNum)

/( CMT_CallTotalNum+ CMT_CallTotalNum +FMT_CallTotalNum)

Call Failure Rate = (CMO_BlockFNum + CMO_OtherFNum +

CMT_BlockFNum + CMT_OtherFNum + FMT_BlockFNum +

FMT_OtherFNum) /( CMT_CallTotalNum+ CMT_CallTotalNum

+FMT_CallTotalNum)

Call KPI (9)

Qualcomm’s recommended value:

Call Success Rate > 95%

OMC’s statistical index:

Service Object Call Success Rate External Interruption Call Failure Rate

Czechic 98.834 0.002 0.644

Morocco 97.976 0.021 1.850

Esthonia 99.101 0.000 0.856

G-Mobile 96.570 0.004 3.154

SKYTEL 97.940 0.121 1.364

Reverse Handoff KPI (1)

Reverse handoff flow:


Reverse handoff KPI needs to collect the following

variables.

SFT_HoRNum: Soft handoff request number

SFT_HoSNum: Soft handoff success number

SFR_HoRNum: Softer handoff request number

SFR_HoSNum:Softer handoff success number

IFR_HoRNum: Frequency-change handoff request number

IFR_HoSNum:Frequency-change handoff success number


Statistical method:

SFT_HoRNum ： At Counter 1, under the connection status, when AN receives

RouteUpdate and handoff requests between BTSs, SFT_HoRNum is reported.

SFT_HoSNum ： At Counter 2, under the connection status, when AN perform

software handoff and receives TrafficChannelComplete, SFT_HoSNum is reported.

SFR_HoRNum ： At Counter 1, under the connection status, when AN receives

RouteUpdate and handoff requests of different sectors in one BTS, SFR_HoRNum is

reported.

SFR_HoSNum ： At Counter 2, under the connection status, when AN performs

softer handoff and receives TrafficChannelComplete, SFR_HoSNum is reported.

IFR_HoRNum ： At Counter 1, under the connection staus, when AN receives

RouteUpdate and handoff requests of different frequency points in BTSs,

IFR_HoRNum is reported.

IFR_HoSNum ： At Counter 2, under the connection status, when AN performs

frequency-change handoff and receives TrafficChannelComplete, IFR_HoSNum is

reported.



Reverse Handoff Success Rate = (SFT_HoSNum+ SFR_HoSNum+

IFR_HoSNum)/ (SFT_HoRNum+ SFR_HoRNum+ IFR_HoRNum)

Qualcomm’s recommended value:

Reverse Handoff Success Rate > 95%


Service Object Reverse Handoff Success Rate

Czechic 97.829

Morocco 95.596

Esthonia 97.394

G-Mobile 99.031

SKYTEL 96.094

Virtual Handoff KPI (1)

Virtual handoff KPI needs to collect the following

variables.

SFT_HoSNum: Virual soft handoff success number

SFT_HoFNum: Virtual soft handoff failure number

SFR_HoSNum: Virtual softer handoff success number

SFR_HoFNum: Virtual softer handoff failure number

IFR_HoSNum: Virtual frequency-change handoff success

number

IFR_HoFNum: Virtual frequency-change handoff failure

number


Statistical method:

SFT_HoSNum: When AN requests handoff from the source sector to the

target sector after capturing DRC from AT, and successfully acquires

service from the target sector, SFT_HoSNum is reported.

SFT_HoFNum: When AN requests handoff from the source sector to the

target sector after capturing DRC from AT, and fails to acquires service

from the target sector, SFT_HoFNum is reported.

SFR_HoSNum: It is similar to virtual soft handoff, but handoff occurs under

different sectors of the same BTS.

SFR_HoFNum: It is similar to virtual soft handoff, but handoff occurs under

different sectors of the same BTS.

IFR_HoSNum: It is similar to virtual soft handoff, but the frequency point is

different.

IFR_HoFNum: It is similar to virtual soft handoff, but the frequency point is

different.



Virtual Handoff Success Rate = (SFT_HoSNum+ SFR_HoSNum+

IFR_HoSNum)/ (SFT_HoSNum+ SFR_HoSNum+ IFR_HoSNum+

SFT_HoFNum+ SFR_HoFNum+ IFR_HoSNum)


Service Object Virtual Handoff Success Rate

Czechic 99.981

Morocco 100.000

Esthonia 99.999

G-Mobile 100.000

SKYTEL 100.000

Release VPI (1)

AT Originated Release Flow

Release VPI (2)

AN Originated Release Flow

Release VPI (3)

Release KPI needs to collect the following variables.

CMO_RlsSNum: Normal release number of AT originating call

CMO_SystemFNum: System call drop number of AT originating

call

CMO_RadioFNum: Radio call drop number of AT originating call

CMT_RlsSNum: Normal release number of AN originating call

CMT_SystemFNum: System call drop number of AN originating

call

CMT_RadioFNum: Radio call drop number of AN originating call

FMT_RlsSNum: Normal release number of fast call

FMT_SystemFNum: System call drop number of fast call

FMT_RadioFNum: Radio call drop number of fast call

Release VPI (4)

Statistical method:

RlsSNum: Normal release causes include the following,

such as AT sending ConnectionClose, time out of dormant

timer, negotiation success but authentication failure,

resource shortage at PDSN. AN will report RlsSNum when

these kinds of release flows are completed.

SystemFNum: When abnormal connection interruption is

caused by the system fault, such as overload,

SystemFNum is reported.

RadioFNum: When abnormal connection interruption is

caused by the radio link fault, RadioFNum is reported.

Release VPI (5)


System Call Drop Rate = SystemFNum/(RlsSNum+

SystemFNum+ RadioFNum)

Radio Call Drop Rate = RadioFNum /(RlsSNum+

SystemFNum+ RadioFNum)

Session KPI (1)

Session Establishment Flow

Session KPI (2)

Statistical method:

SessionSetupAttempNum: At Counter 1, when AN receives

UATIRequest from AT, SessionSetupAttempNum is

reported.

SessionSetupSNum: At Counter 2, when AN receives

UATIComplete, SessionSetupSNum is reported.

SessionNegoSNum: At Counter 3, when negotiation is

completed and AN successfully sends

ConfigurationComplete, SessionNegoSNum is reported.

Session KPI (2)


Session Setup Success Rate = SessionSetupSNum/

SessionSetupAttempNum

Session Negotiation Success Rate = SessionNegoSNum

/SessionSetupSNum


Service Object Session Setup Success Rate Session Negotiation Success Rate

Czechic 97.761 97.720

Morocco 92.717 98.897

Esthonia 88.880 97.880

G-Mobile 99.909 99.901

SKYTEL 98.267 66.695

022-EVDO Rev A KPI

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