ZTE WCDMA Network Planning and Optimization Training

WCDMA Network Planning & Optimization Training Presentation Slides

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Version:Apr

2009, first edition

S.N.: TSCWZ0904002E1

General

800-830-1118

Preface Thanks for using Manual for WCDMA Network Planning & Optimization Training Presentation Slides In order to use the Manual properly, please read the Preface first.

1. Application It should not be used for the purpose of on-site installation or trouble shooting.

2. About This Manual This manual is composed of One volumes，and the table of contents of each volume is shown below: Volume

Course Name WR_BT02_E1_1 WCDMA Wireless Principle WR_BT03_E1_1 Channel Structure and Function WCDMA Key Technologies WCDMA Radio Network Planning Process

I Introduciton to ZTE RNPO Tools（Felix） WR_BT06_E1_1 Interface Protocol and signaling flow WCDMA RAN KPI introduction WCDMA Network Optimization Cases study

3. Manual Update history Version 1.0

Date 2009-4

Comments New

4. From the Author Thank you for using this manual and your continuous support. We would appreciate your comments and suggestions on this Manual. We can be reached at Telephone： （+86755）26778072 Fax： （+86755）26778999

ZTE UNIVERSITY

WR_BT02_E1_1 WCDMA Wireless Principle

ZTE University TD&W&PCS BSS Course Team

Content The Basic Principles of Wireless Communication » Radio Propagation Characteristics » Spreading Technology » Channel Coding » Interleave Technology » Modulation WCDMA Radio mechanism

1

The Basic Principles of Wireless Communication

Multi-path characteristics of radio channel T

Electromagnetic propagation: --direct radiation、reflection、diffraction and scattering

T

Signal attenuation: B Path loss： Loss of electromagnetic waves in large scope of the spread

reflects the trend of the received signal in the spreading。 B Slow fading：Loss because of being blocked by the building and hill in the

propagation path B Fast fading：Electromagnetic signals rapidly decline in a few dozens

wavelength ranges T

Description of Fast fading distribution B Rayleigh distribution：non line-of –sight(NLOS) transmission B Rician distribution：line-of –sight(LOS) transmission

The Basic Principles of Wireless Communication

Multi-Path Effects

sending signal

strength

receiving signal 0

time

2

The Basic Principles of Wireless Communication

Characteristics of Radio Propagation

Interference

dithering 0

τ

2τ 3τ

σ

delay

fading 0dB

0

σ

τ

Sending signal

σ+ τ

Accepting signal

Sending signal

Accepting signal

Sending signal

-25dB

σ+ τ

Accepting signal

Sending signal

Accepting signal

Frequency -set caused off Frequency offoff-set causedby bythe themovement movementof ofmobile mobile， ， that thatis isDoppler Dopplereffect effect

Contents The Basic Principles of Wireless Communication » Radio Propagation Characteristics » Spreading Technology » Channel Coding » Interleave Technology » Modulation WCDMA Radio mechanism

3

The Basic Principles of Wireless Communication

Spread Spectrum Principles SHANON Formula

C C == Blog Blog22(1+S/N) (1+S/N) T T T T T T

Where, C is capacity of channel, b/s B is signal bandwidth, Hz S is average power for signal, W N is average power for noise, W It is the basic principle and theory for spread spectrum communications.

The Basic Principles of Wireless Communication

Spread Spectrum Principles

MA HAM TH MER

Power is “Spread” Over a Larger Bandwidth

MATH HAMMER

30 KHz 1.25 MHz

4

The Basic Principles of Wireless Communication

Spread Spectrum Principles

Despreading Spreading

radio channel Noise

Transmitter

Receiver

B User information bits are spread over a wide bandwidth by

multiplying high speed spread code(chip) B Spread signal bandwidth W wider than original signal

bandwidth Rb B For WCDMA, W=3.84Mchip/s、 Rb(voice)=12kbit/s

The Basic Principles of Wireless Communication

Spread Spectrum Principles S（f）

S（f） signal

signal f0

Before spreading

S（f）

f

f0

f

After spreading

S（f）

signal

White noise

White noise

signal f0

f0

f

After despreading

Before despreading

signal

interference

5

f

White noise

The Basic Principles of Wireless Communication v

Spreading Mode T

Direct sequence spread spectrum（DS-SS） B Base band data is spread by multiplication of pseudo-noise sequence and base-

band pulse, the pseudo-noise sequence generated by the pseudo-noise generator B BER subject to Multiple Access Interference and near-far effect B Power control can overcome the near-far effect, but it is limited by power

detection accuracy B WCDMA uses DS-SS

T

Frequency hopping spread spectrum（FH-SS） B Data is transmitted in the random channel by the carrier frequency hopping B Before FH again, data is transmitted using traditional narrowband modulation B No near-far effect

The Basic Principles of Wireless Communication

DS-SS communication system T

A technology of transmission after spreading signal spectrum. Wideband Signal

Slow Information Sent

Slow Information Recovered

TX

RX

Fast Spreading Sequence

Fast Spreading Sequence

6

The Basic Principles of Wireless Communication

Spread Spectrum Principles

Many code channels are individually “spread” and then added together to create a “composite signal”

The Basic Principles of Wireless Communication

Spread Spectrum Principles B Any Code Channel can be extracted from the received composite

signal by using the “right” orthogonal code B Energy for transmitting signal can be lower than interference and

noise

Processing Gain Broadband Interference Unwanted Power from Other Resoures

7

The Basic Principles of Wireless Communication

Concept of orthogonal code

Code1

+1 -1 +1 +1 -1 +1 -1 -1

Code1

+1 -1 +1 -1 -1 +1 -1 -1

Code2

-1 +1 +1 -1 -1 +1 +1 -1

Code2

+1 +1 -1 +1 -1 -1 +1 -1

Mul

-1 -1 +1 -1 +1 +1 -1 +1

Mul

+1 -1 -1 -1 +1 -1 -1 +1

Sum

Sum

0

-2

Orthogonal

Non-orthogonal

T

Orthogonal— the result of multiplying and sum is 0

The Basic Principles of Wireless Communication

Example of orthogonal code

-1 1

MUL

-1 1 -1 1 1 -1 1 -1 -1 -1 -1 -1 1 1 1 1

1 -1 1 -1

Integral

MUL

-1 -1 -1 -1 1 1 1 1 -1 1 -1 1 1 -1 1 -1

1 -1 1 -1

-4

4

0

0

Judge

8

-1

1

The Basic Principles of Wireless Communication

Direct spread technique

S1xC1

S1

Spreading

W

Air Interface

S2XC2

S2

S N

[S1xC1+S2xC2]xC1 =S1

(S1xC1)+(S2xC2)

Despreading C1xC2=0, C1,C2,orthogonal

[S1xC1+S2xC2]xC2 =S2

The Basic Principles of Wireless Communication

Sketch map of Spreading and Despreading Symbol

Data=010010

1 -1

Chip

Spreading

Spreading code = 1 -1 -1 1 -1 1 1 -1 ( SF = 8 )

1 -1 1 -1

Spread signal = Data × code Despreading

Spreading code

1 -1 1 -1

Data = Spread signal × Spreading code

9

The Basic Principles of Wireless Communication

Characteristics of Spreading Communication

T

High anti-multi-path- interference capability

T

Anti-sudden-pulse

T

High security

T

Lower transmitting power

T

Easy to implement large-capacity Multiple Access Communication

T

Occupy band wide

T

Complex realization

Contents The Basic Principles of Wireless Communication » Radio Propagation Characteristics » Spreading Technology » Channel Coding » Interleave Technology » Modulation WCDMA Radio mechanism

10

The Basic Principles of Wireless Communication

Purpose of Channel Coding T

By adding redundant information in the original data stream, receivers can detect and correct the error signal, and improve data transmission rates.

No correct coding: BERGSM） ） Indicator Description

Indicator

Signaling Flow

Definition

Indicator Extension

W W

Statistic Statistic Period: Period: 15Mins,30Mins,1Hour…., 15Mins,30Mins,1Hour…., 1Day…. 1Day….

W W

Statistic Statistic Area: Area: cell-wise cell-wise or or RNC-wise RNC-wise

W W

Indoor Indoor or or Outdoor: Outdoor: BOTH BOTH

W W

Measurement Measurement Method：Calculate Method：Calculate based based on on OMC OMC Counters’ Counters’ value value

W W

Indicator Indicator Meaning: Meaning: this this indicator indicator reflect reflect the the intersystem intersystem CS CS handover handover mobility, mobility, the the handover handover is is from from WCDMA WCDMA system system to to GSM GSM system. system.

WCDMA RAN KPI Definition and Measurement Methods

CS Intersystem Handover Success Ratio （WCDMA->GPRS） ） Indicator Description

Indicator

Signaling Flow

Definition

Indicator Extension

CS Intersystem Handover Success Ratio（ （WCDMA->GSM） ） ＝1－ －CS Intersystem Handover From UTRAN Failure Times /CS Intersystem Handover From UTRAN Required Times× ×100%

185

WCDMA RAN KPI Definition and Measurement Methods

CS Intersystem Handover Success Ratio （WCDMA->GPRS） ） Indicator

Indicator

Description

Indicator

Signaling Flow

Definition

Extension

Success Flow UE

Handover from UTRAN command

RNC

CN

2GMSC

Relocation required

Prepare handover

Relocation command

Prepare handover response

CS Intersystem Handover From UTRAN Required Times

Handover complete

Failure Flow

UE

UTRAN

HANDOVER FROM UTRAN COMMAND

CS Intersystem Handover From UTRAN Failure Times, if the handover is failed, RNC will receive this message

HANDOVER FROM UTRAN FAILURE

WCDMA RAN KPI Definition and Measurement Methods

CS Intersystem Handover Success Ratio （WCDMA->GPRS） ）

Indicator

Indicator

Description

Definition

Indicator Signaling Flow Extension

W W

configuration configuration unsupported unsupported caused caused CS CS intersystem intersystem handover handover from from UTRAN UTRAN failure failure ratio ratio

W W

physical physical channel channel failure failure caused caused CS CS intersystem intersystem handover handover from from UTRAN UTRAN failure failure ratio ratio

W W

Configuration Configuration incomplete incomplete caused caused CS CS intersystem intersystem handover handover from from UTRAN UTRAN failure failure ratio ratio

W W

protocol protocol error error caused caused CS CS intersystem intersystem handover handover from from UTRAN UTRAN failure failure ratio ratio

W W

cell cell update update occurred occurred caused caused CS CS intersystem intersystem handover handover from from UTRAN UTRAN failure failure ratio ratio invalid invalid configuration configuration caused caused CS CS intersystem intersystem handover handover from from UTRAN UTRAN failure failure ratio ratio

W W

No No reply reply caused caused CS CS intersystem intersystem handover handover from from UTRAN UTRAN failure failure ratio ratio

W W

…… ……

186

WCDMA RAN KPI Definition and Measurement Methods

PS Intersystem Handover Success Ratio （WCDMA->GPRS） ） Indicator Description

Indicator

Signaling Flow

Definition

Indicator Extension

W W

Statistic Statistic Period: Period: 15Mins, 15Mins, 30Mins,1Hour…. 30Mins,1Hour…. 1Day…. 1Day….

W W

Statistic Statistic Area: Area: cell-wise cell-wise or or RNC-wise RNC-wise

W W

Indoor Indoor or or Outdoor: Outdoor: BOTH BOTH

W W

Measurement Measurement Method: Method: calculate calculate based based on on the the OMC OMC counters’ counters’ value value

W W

Indicator Indicator Meaning: Meaning: this this indicator indicator reflect reflect the the intersystem intersystem handover handover mobility, mobility, the the handover handover is is from from WCDMA WCDMA system system to to GPRS GPRS system. system.

WCDMA RAN KPI Definition and Measurement Methods

PS Intersystem Handover Success Ratio （WCDMA->GPRS） ）

Indicator Description

Indicator

Signaling Flow

Definition

Indicator Extension

PS Intersystem Handover Success Ratio（ （WCDMA->GPRS） ） ＝1－ －PS Intersystem Handover From UTRAN Failure Times /PS Intersystem Handover From UTRAN Required Times× ×100%

187

WCDMA RAN KPI Definition and Measurement Methods

PS Intersystem Handover Success Ratio （WCDMA->GPRS） ） Indicator

Indicator

Description

Definition

Success Flow UE NODEB

RNC

Cell change order from UTRAN

Indicator

Signaling Flow

Extension

3G SGSN

Iu Release Command

RL Del Req

PS Intersystem handover from UTRAN required Times

RL Del Resp Iu Release Complete

Failure Flow

UE

PS intersystem handover from UTRAN failure times. If the RNC received this message, or response message of Iu Release Command is not received by RNC, it means the PS handover from UTRAN is failed.

UTRAN

CELL CHANGE ORDER FROM UTRAN

CELL CHANGE ORDER FROM UTRAN FAILURE

WCDMA RAN KPI Definition and Measurement Methods

PS Intersystem Handover Success Ratio（ （WCDMA>GPRS） ）

W W

Indicator

Indicator

Description

Definition

Indicator Signaling Flow Extension

configuration configuration unsupported unsupported caused caused PS PS intersystem intersystem handover handover from from UTRAN UTRAN failure failure ratio ratio

W W

physical physical channel channel failure failure caused caused PS PS intersystem intersystem handover handover from from UTRAN UTRAN failure failure ratio ratio

W W

Configuration Configuration incomplete incomplete caused caused PS PS intersystem intersystem handover handover from from UTRAN UTRAN failure failure ratio ratio

W W

protocol protocol error error caused caused PS PS intersystem intersystem handover handover from from UTRAN UTRAN failure failure ratio ratio

W W

cell cell update update occurred occurred caused caused PS PS intersystem intersystem handover handover from from UTRAN UTRAN failure failure ratio ratio

W W

invalid invalid configuration configuration caused caused PS PS intersystem intersystem handover handover from from UTRAN UTRAN failure failure ratio ratio

W W

No No reply reply caused caused PS PS intersystem intersystem handover handover from from UTRAN UTRAN failure failure ratio ratio

W W

…… ……

188

WCDMA RAN KPI Definition and Measurement Methods

PS Intersystem Handover Success Ratio （GPRS->WCDMA） ） Indicator Description

Indicator

Signaling Flow

Definition

Indicator Extension

W W

Statistic Statistic Period: Period: 15Mins,30Mins,1Hour…., 15Mins,30Mins,1Hour…., 1Day…. 1Day….

W W

Statistic Statistic Area: Area: cell-wise cell-wise or or RNC-wise RNC-wise

W W

Indoor Indoor or or Outdoor: Outdoor: BOTH BOTH

W W

Measurement Measurement Method：Calculate Method：Calculate based based on on OMC OMC Counters’ Counters’ value value

W W

Indicator Indicator Meaning: Meaning: this this indicator indicator reflect reflect the the intersystem intersystem handover handover mobility, mobility, the the handover handover is is from from GRRS GRRS system system to to WCDMA WCDMA system. system.

WCDMA RAN KPI Definition and Measurement Methods

PS Intersystem Handover Success Ratio （GPRS->WCDMA） ）

Indicator

Indicator

Description

Definition

Signaling Flow

Indicator Extension

PS Intersystem Handover to UTRAN Success Ration（ （GPRS->WCDMA） ） ＝PS Intersystem Handover to UTRAN Success Times /PS Intersystem Handover to UTRAN Required Times× ×100%

189

WCDMA RAN KPI Definition and Measurement Methods

PS Intersystem Handover Success Ratio (GPRS>WCDMA） ） Indicator

Indicator

Description

Definition

Signaling Flow

UE

Serving RNC

Indicator Extension

CN

1. UE initiated signaling connection establishment

The flow of PS intersystem handover to UTRAN is similar to the PS setup flow on the UTRAN Side

2. Direct Transfer

3. Radio Access Bearer Establishment

RNC received message RRC Connection Request（from UE, the cause is Inter-RAT cell reselection）can be used for calculation the PS intersystem handover to UTRAN required times；RNC received message RRC Connection Complete (From UE) can be used for calculation the PS intersystem handover to UTRAN success times

WCDMA RAN KPI Definition and Measurement Methods

CS12.2K Service Access Time

Indicator Description

Indicator

Signaling Flow

Definition

Indicator Extension

W W

Statistic Statistic Period: Period: － －

W W

Statistic Statistic Area: Area: － －

W W

Indoor Indoor or or Outdoor: Outdoor: BOTH BOTH

W W

Measurement Measurement Method：Statistic Method：Statistic from from the the logging logging files files of of system system signaling signaling

W W

Indicator Indicator Meaning: Meaning: this this indicator indicator reflect reflect the the integrity integrity of of CS CS 12.2K 12.2K service. service. ItIt is is one one of of the the most most important important indicators indicators of of the the customer’s customer’s experience. experience.

190

WCDMA RAN KPI Definition and Measurement Methods

CS12.2K Service Access Time

Indicator

Indicator

Description

Definition

Indicator

Signaling Flow

Extension

CS12.2K Service Access Time ＝Average 【T（ （CC Alert) －T（ （ RRC Connection Request ）】

WCDMA RAN KPI Definition and Measurement Methods

CS12.2K Service Access Time Indicator

Indicator

Description

Definition

UE UE

RNS RNS

Indicator

Signaling Flow MSC MSC

Extension Incoming Incoming MSC MSC

RRC Connection Request

T（RRC Connection Request）

RRC Connection Setup RRC Connection Setup Complete

CN Signaling Connection Process RRC DT(CM Service Request) Authority and Safe Mode Process RRC DT(Setup) RRC DT(Call Proceeding) RAB Assignment Process

T（CC Alert） RRC DT (Alert) RRC DT(Connect) RRC DT(Connect ACK)

ISUP IAM CN Bear Setup Process ISUP ACM

Service data （talking talking… …）

191

ISUP ANM

WCDMA RAN KPI Definition and Measurement Methods

CS64K Service Access Time Indicator

Indicator

Description

Signaling Flow

Definition

Indicator Extension

W W

Statistic Statistic Period: Period: － －

W W

Statistic Statistic Area: Area: － －

W W

Indoor Indoor or or Outdoor: Outdoor: BOTH BOTH

W W

Measurement Measurement Method：Statistic Method：Statistic from from the the logging logging files files of of system system signaling signaling

W W

Indicator Indicator Meaning: Meaning: this this indicator indicator reflect reflect the the integrity integrity of of CS CS 64K 64K service. service. ItIt is is one one of of the the most most important important indicators indicators of of the the customer’s customer’s experience. experience.

WCDMA RAN KPI Definition and Measurement Methods

CS64K Service Access Time

Indicator

Indicator

Description

Definition

Signaling Flow

CS64K Service Access Time ＝Average 【T（ （RRC Request) －T（ （CM Service Request） ）】

192

Indicator Extension

WCDMA RAN KPI Definition and Measurement Methods

CS64K Service Access Time Indicator

Indicator

Description

Definition

UE UE

RNS RNS

Indicator

Signaling Flow MSC MSC

Extension Incoming Incoming MSC MSC

RRC Connection Request

T（RRC Connection Request）

RRC Connection Setup RRC Connection Setup Complete

CN Signaling Connection Process RRC DT(CM Service Request) Authority and Safe Mode Process RRC DT (Setup) RRC DT (Call Proceeding) RAB Assignment Process

T（CC Alert） RRC DT (Alert) RRC DT (Connect) RRC DT (Connect ACK)

ISUP IAM CN bear setup process ISUP ACM ISUP ANM

Service data （talking… talking…）

WCDMA RAN KPI Definition and Measurement Methods

Average PS Download Data Rate Indicator

Indicator

Description

Definition

Signaling Flow

Indicator Extension

W W

Statistic Statistic Period: Period: － －

W W

Statistic Statistic Area: Area: － －

W W

Indoor Indoor or or Outdoor: Outdoor: BOTH BOTH

W W

Measurement Measurement Method：DT Method：DT or or

W W

Indicator Indicator Meaning: Meaning: this this indicator indicator reflect reflect the the integrity integrity of of average average PS PS download download data data rate. rate. ItIt is is one one of of the the most most important important indicators indicators of of the the customer’s customer’s experience. experience.

193

WCDMA RAN KPI Definition and Measurement Methods

Average PS Download Data Rate

Indicator

Indicator

Description

Definition

Signaling Flow

Indicator Extension

Use the software flashget to download and Upload large files from and to FTP server， ， Use the software dumeter to statistic the application layer data rate for about 15 Mins， ， And from the software dumeter we can get the PS service average transfer data rate

WCDMA RAN KPI Definition and Measurement Methods

CS Service Traffic Erlang Indicator Description

Indicator

Indicator

Signaling Flow

Definition

Extension

W W

Statistic Statistic Period: Period: 15Mins,30Mins,1Hour…., 15Mins,30Mins,1Hour…., 1Day…. 1Day….

W W

Statistic Statistic Area: Area: cell-wise cell-wise

W W

Indoor Indoor or or Outdoor: Outdoor: BOTH BOTH

W W

Measurement Measurement Method：Calculate Method：Calculate based based on on OMC OMC Counters’ Counters’ value value

W W

Indicator Indicator Meaning: Meaning: this this indicator indicator reflect reflect the the traffic traffic Erlang Erlang of of the the CS CS conversation conversation service service

194

WCDMA RAN KPI Definition and Measurement Methods

CS Service Traffic Erlang

Indicator

Indicator

Description

Definition

Indicator Signaling Flow Extension

CS Call Duration ＝∑【Time（ （Radio Link Setup Response） ） － Time（ （Radio Link Deletion Response） ）】

CS Service Traffic ERL＝ ＝Total CS Call Duration of a Certain Period/3600

WCDMA RAN KPI Definition and Measurement Methods

CS Service Traffic Erlang

Indicator

Indicator

Description

Definition

Indicator Signaling Flow Extension

W W

CS CS AMR AMR Voice Voice Service Service Traffic Traffic Erlang Erlang

W W

CS CS Video Video Phone Phone Service Service Traffic Traffic Erlang Erlang

195

WCDMA RAN KPI Definition and Measurement Methods

PS Service Throughput Indicator Description

Indicator

Indicator

Signaling Flow

Definition

Extension

W W

Statistic Statistic Period: Period: 15Mins,30Mins,1Hour…., 15Mins,30Mins,1Hour…., 1Day…. 1Day….

W W

Statistic Statistic Area: Area: cell-wise cell-wise

W W

Indoor Indoor or or Outdoor: Outdoor: BOTH BOTH

W W

Measurement Measurement Method：Calculate Method：Calculate based based on on OMC OMC Counters’ Counters’ value value

W W

Indicator Indicator Meaning: Meaning: this this indicator indicator reflect reflect the the total total throughput throughput of of PS PS service service

WCDMA RAN KPI Definition and Measurement Methods

PS Service Throughput

Indicator

Indicator

Description

Definition

Indicator Signaling Flow Extension

UL PS Service Throughput＝ ＝RNC Received Total RLC PDU Bytes DL PS Service Throughput＝ ＝RNC Sent Total RLC PDU Bytes （Including user data， ，RLC head data， ，retransfer data， ，signaling data， ，Unit： ：Kbytes） ）

196

WCDMA RAN KPI Definition and Measurement Methods

PS Service Throughput

Indicator

Indicator

Description

Definition

Indicator Signaling Flow

W W

PS PS II 64/64 64/64 UL UL Throughput Throughput

W W

PS PS II 64/64 64/64 UL UL Throughput Throughput

W W

PS PS B B 64/64 64/64 UL UL Throughput Throughput

W W

PS PS B B 64/64 64/64 UL UL Throughput Throughput

W W

PS PS S S 64/64 64/64 UL UL Throughput Throughput

W W

PS PS S S 64/64 64/64 UL UL Throughput Throughput

W W

…… ……

Extension

WCDMA RAN KPI Definition and Measurement Methods

UL Interference Load Factor Indicator

Indicator

Description

Definition

Indicator Signaling Flow Extension

W W

Statistic Statistic Period: Period: 15Mins,30Mins,1Hour…., 15Mins,30Mins,1Hour…., 1Day…. 1Day….

W W

Statistic Statistic Area: Area: cell-wise cell-wise

W W

Indoor Indoor or or Outdoor: Outdoor: BOTH BOTH

W W

Measurement Measurement Method: Method: Calculate Calculate based based on on Measurement Measurement Report Report value value

W W

Indicator Indicator Meaning: Meaning: this this indicator indicator reflect reflect the the cell cell average average UL UL load load factor factor in in aa defined defined period, period, itit is is calculated calculated based based on on the the RTWP RTWP value value on on aa certain certain frequency. frequency.

197

WCDMA RAN KPI Definition and Measurement Methods

UL Interference Load Factor

Indicator

Indicator

Description

Definition

Indicator Signaling Flow Extension

UL Interference Load Factor ＝（UL RTWP measurement value－ －N0 ） /UL RTWP measurement value× ×100%

WCDMA RAN KPI Definition and Measurement Methods

DL Power Load Factor Indicator

Indicator

Description

Definition

Indicator Signaling Flow Extension

W W

Statistic Statistic Period: Period: 15Mins,30Mins,1Hour…., 15Mins,30Mins,1Hour…., 1Day…. 1Day….

W W

Statistic Statistic Area: Area: cell-wise cell-wise

W W

Indoor Indoor or or Outdoor: Outdoor: BOTH BOTH

W W

Measurement Measurement Method: Method: Calculate Calculate based based on on Measurement Measurement Report Report value value

W W

Indicator Indicator Meaning: Meaning: this this indicator indicator reflect reflect the the cell cell average average DL DL load load degree degree in in aa defined defined period, period, itit is is calculated calculated based based on on the the base base station station Tx Tx power. power.

198

WCDMA RAN KPI Definition and Measurement Methods

DL Power Load Factor

Indicator

Indicator

Description

Definition

Indicator Signaling Flow Extension

DL Power Load Factor ＝DL Average Transmitting Carrier Power/ Configured DL Maximal Transmitting Carrier Power× ×100%

WCDMA RAN KPI Definition and Measurement Methods

Trouble Cell Ratio

Indicator

Indicator

Description

Definition

Indicator Signaling Flow Extension

W W

Statistic Statistic Period: Period: 15Mins,30Mins,1Hour…., 15Mins,30Mins,1Hour…., 1Day…. 1Day….

W W

Statistic Statistic Area: Area: RNC-wise RNC-wise

W W

Indoor Indoor or or Outdoor: Outdoor: BOTH BOTH

W W

Measurement Measurement Method：Calculate Method：Calculate based based on on OMC OMC Counters’ Counters’ value value

W W

Indicator Indicator Meaning: Meaning: this this indicator indicator reflect reflect the the ratio ratio of of dead dead cells cells to to total total cells, cells, itit is is an an assistant assistant to to analyze analyze the the QoS QoS of of whole whole network. network.

199

WCDMA RAN KPI Definition and Measurement Methods

Trouble Cell Ratio

Indicator

Indicator

Description

Definition

Indicator Signaling Flow Extension

Trouble Cell Ratio ＝Trouble Cell Number/ Active Cell Number× ×100%

Trouble Cell is the cell whose drop call ratio>a％ ％ or Call Setup Success Ratioc％ ％ or Code Resource Occupation Factor>d％ ％

WCDMA RAN KPI Definition and Measurement Methods

Sleeping Cell Ratio

Indicator

Indicator

Description

Definition

Indicator Signaling Flow Extension

W W

Statistic Statistic Period: Period: 15Mins,30Mins,1Hour…., 15Mins,30Mins,1Hour…., 1Day…. 1Day….

W W

Statistic Statistic Area: Area: cell-wise cell-wise

W W

Indoor Indoor or or Outdoor: Outdoor: BOTH BOTH

W W

Measurement Measurement Method：Calculate Method：Calculate based based on on OMC OMC Counters’ Counters’ value value

W W

Indicator Indicator Meaning: Meaning: this this indicator indicator reflect reflect the the ratio ratio of of idle idle cells cells to to total total cells, cells, itit is is an an assistant assistant to to analyze analyze the the QoS QoS of of whole whole network. network.

201

WCDMA RAN KPI Definition and Measurement Methods

Sleeping Cell Ratio

Indicator

Indicator

Description

Definition

Indicator Signaling Flow Extension

Sleeping Cell Ratio ＝Sleeping Cell Number/Active Cell Mumber× ×100%

Sleeping Cell is the cell whose DL power load factor