2 Cdma RNP Presentation-new

7/31/2019 2 Cdma RNP Presentation-new

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CDMA1X Radio Network

Planning and Optimization

Yosuf Yang

Huawei Technologies Co., Ltd.


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2

Role of RNP

Huawei Landmarks in RNP


Huawei Solutions In RNP

Agenda


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3

Better

coverage

LargeCapacity

Best resources

utilization

Future

proof

Best Quality

An Efficient Network

...

Wireless network demands


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4

Why is It Important?

Attention to

Capacity

Utilization

How to expand?

Interference

Traffic Unbalanced

About 500 BTSs and 3500TRX?

Evaluation

Enough Frequency

Capacity Waste

!

Optimization

With

Planning

An Example of the C City:

Excellent

Network

60%

Equipment

40%

RNP Service= +


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5

Role of CDMA



Huawei Solutions in RNP

Agenda


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Wireless

Access

CDMA 450D

CDMA WLL

GSM

GSM900

GSM1800

2.5G

CDMA 2000 1X

GPRS

3G

WCDMA

CDMA EV

Wireless Series Products

A mature RNP Team

Over 600 engineers in more than 40 technical support offices for

round the clock services

Strict grade authentication of technical position qualification

A Mature Technical Team


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Technical Support System

Technical Support System

Provide Fast and Efficient RNP Services

Onsite

Engineer

R&D

Technical

Support


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K! It is done!

Dont worry!

We are here to

help you!

I know whats wrong

,just do like thisSystem is down

I cant solve it

Our support team always keeps on monitoring

Onsite Technical Support

Support Guaranteed


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With 8 years experience Huawei has many patents in RNP field.

Research Achievements In CDMA RNP

Huawei hybrid traffic model and planning approaches Patent

Huawei Link budget approaches and planning tools Patent

Huawei Neighbor List Auto-Generation System

Huawei RNP Platforms (SNA, Netstar, I-go)

Huawei Radio Resource Management Scheme Patent

Technical Guarantee


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Role of CDMA




Agenda


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Lets begin RNP

PN

Planning

PlanningScheme

Antenna

Selection

Simulation

Network

PlanningSoftware

BTSLayout

Link

Budget

CoveragePrediction

Capacity

Analysis

Network Planning

Just tell us your requirements on capacity and coverage, we are

ready to provide a whole planning scheme .


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Network Optimization

The general optimization procedure

Analysis &Optimization

DataCollection

Evaluation& Feedback

Network Performance Data

- Statistics Data (NMS, BSM)

- Field Measurement Data

- Subscriber Claims

We have rich project implementation experience in mobile field,

and have set up more than 10,000 base stations.


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Network planning software

PlaNETASSET

Tools Applied in RNP

Drive Test instrument

BlueroseAgilentParomara.

Spectrum Analyzer, SignalingAnalyzer

Best Tools in This Field


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Role of CDMA




Agenda


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Solutions in Different Environments

PlainsCanzhou, Tashkent in Uzbiekestan, Ufain Russia, Petersburg in Russia

HighlandsHunan, Yunnan, Guangxi

Dense citiesShantou, Minsk in Byelorussia

Road coverageFujian

Application Experiences in Various

Environments :


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Country ProjectRussia Moscow MSS

Russia Ufa CCB

Russia St.Petersburg Delta

Uzbiekestan UzbektelecomBelorussia Minsk

Kirghizia Iberiatel

Ukraine CST

Kazakstan Telecom

Yemen WLL

Algeria WLL

Overseas CDMA Applications

Cover the

whole

country


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Dense City S city

South China: S city

80,000subscribers, 35BTSs

Economic developed city, the hometown of LiJiacheng, with population of 4,680,000.

Many high-rises and condensed dwelling houses

Face the sea and against hills


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Link Budget---Work out the path loss under a certain

conditions, then get the cell radius with

Propagation model.

The maximum allowed path loss

Coverage area of a single site

The number of sites to meet the coverage

Coverage S City


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Coverage S City

mhbbpAdhhfL log)log55.69.44(log82.13log16.2655.69

Lp f

bh

mh

d

mhA

Path loss (dB)

BS antenna height (m)

MS antenna height (m)

Carrier frequency (MHz)

Distance between the BS and MS (Km)

MS antenna correction factor (dB)

)8.0log56.1()7.0log1.1( fhfA mhm

97.4)75.11(log2.3 2 mh hA m

Middle or small-size cities:

Big cities:

Frequency range: 150MHz to 2000MHz.

Propagation ModelOkumura-Hata & Cost 231


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Coverage S City

Propagation ModelTerrain Correction

In urban areas, adjusted as:

In rural areas (open country), adjusted as:

In rural areas (quasi open country), adjusted as:

C S C


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Tx/Rx

powerfading

allowanceAntenna

gain

Feeder

lossInterference

allowance

Antenna

gain

Path

loss

Forward link

Reverse link

Tx/Rx

powerSoft handoff

gain

Balance

Cell Radius

Coverage S CityLink Budget ---

Forward Link

C S Ci


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Coverage S CityLinkBudget---

Cell Radius

Item Dense Urban Urban Rural

Maximum power of traffic channel 21.55dBm 21.55dBm 21.55dBm

Loss of Feeder and Connectors 1.66dB 1.93dB 2.2dB

Antenna Gain 15dB 15dB 15dB

Sensitivity 127.48dBm 125.41dBm 125.41dBm

Noise factor 3.20dB 3.20dB 3.20dB

Demodulation Threshold Eb/Nt 3.5dB 3.5dB 3.5dB

SHO gain 3.7dB 3.7dB 3.7dB

Power control Margin 0.50dB 0.50dB 0.50dB

Interference margin 3.01dB 3.01dB 3.01dB

Penetration loss(Indoor planning) 25dB 20dB 15dB

Cell Load 50% 50% 50%

Required coverage probability 98% 98% 90%

MAPL 122.36dB 125.29dB 136.45dB

Antenna Height Of MS 1.5m 1.5m 1.5m

Antenna Height Of BS 40m 40m 50m

Cell Radius 1.45Km 1.76Km 7.49Km

Need 27

sites for

coverage

C i C l l i S Ci


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Capacity Calculation S City

Capacity Calculation ---

According to traffic model and the capacityof single site, get the number of sites to meetthe requirement.

The maximum throughput of single sector

The number of sites to meet the capacity requirement

Throughput= BHE *Data Rate*Activation Factor

= BHE *9.6kbps*0.4

C it C l l ti S Cit


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Capacity Calculation S City

)

)1(

)1(

(22

22

222

2

1

0

eM

eMXR

W

QBcdma

dtexQt

x

2/2

2

1)(

Cell Load 75%

Interference Factor 0.55

Second Order Interference Factor 0.086

Voice Activation Factor 0.4

Spread spectrum gain 21

Soft Block Ratio 2%

Traffic Channel Eb/Nt 5.08

Omni Site Sector Site

Sector Factor 1 Sector Factor 2.55

Traffic (Erl) 28.6 Traffic (Erl) 73

Average Throughput (kbps) 109.8 Average Throughput 280.3

Subscribers 953 Subscribers 2433

Need 35

sites

S i l C id ti S Cit


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Situation:

Special Considerations S City

Good coverage required

Very heavy traffic in dwelling areas

Solutions: Make detailed site survey

Adopt built-inantenna with 16tilt

P di ti S Cit


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Prediction S City

Import the TargetArea Digital Map

Define the Site Parameters

- Equipment Parameters

- Location Parameters

- System Parameters

- Propagation Model

Calculate the Path Loss

Si l ti S Cit


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Simulation S City

Run the Monte Carlo Simulation

- Initialize the mobile state

- Initialize the noise

- Calculate the power increase

- Iterate this procedure

Define the Traffic

- Traffic Distribution

- Mobile Parameters

Analyze the Output Report


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Simulation- S City

The Ec/Io in most areas are over -10dB

Ec/Io


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29The Rx_level in most areas are over -85dBm

Simulation- S City

Forward Rx_Level


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The MS Tx Power is usually lower than 0dBm in urban,

-10dBm in dense urban and -20 dBm near the BTS.

Simulation- S CityMs Tx Power

PN Offset Planning S Cit


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PN Offset Planning S City

Walsh Code

0 1-7 8-31 32 33

- 63

The different Sectoris distinguished bydifferent PN offsets.

300 312 480

0 PN # (timing offset) 511

PilotStrength(Ec/Io)

24 156

What is PN Offset?



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Sub-cluster 1Sector1 4 20 36 52 68 84 100 116 132 148 164

Sector2 172 188 204 220 236 252 268 284 300 316 332

Sector3 340 356 372 388 404 420 436 452 468 484 500

Sub-cluster 2

Sector1 8 24 40 56 72 88 104 120 136 152 168

Sector2 176 192 208 224 240 256 272 288 304 320 336

Sector3 344 360 376 392 408 424 440 456 472 488 504

Sub-cluster 3

Sector1 12 28 44 60 76 92 108 124 140 156

Sector2 180 196 212 228 244 260 276 292 308 324

Sector3 348 364 380 396 412 428 444 460 476 492

Sub-cluster 4

Sector1 16 32 48 64 80 96 112 128 144 160

Sector2 184 200 216 232 248 264 280 296 312 328

Sector3 352 368 384 400 416 432 448 464 480 496

Divide the PN Offsets into 4 sub-clusters

Unreasonable PN offset planning causes interference.



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PN Offset Allocation


Optimization S City


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Optimization S City

PN Pollution

Optimization

Down tilting,

Transmit power adjustment,

PN pollution areas!

Optimization S City


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Optimization S City

Neighbor List Missed

CAI messageBSM message

Date BSC BCP BTS BTS Name SECT T_PN COUNT

01/10/12 5 18 258A-100 0 184 135

01/10/10 1 16 64B-102 0 202 126

01/10/11 5 18 258C-88 0 184 124

01/10/11 5 27 267B-14 1 124 122

01/10/10 3 10 154D-209 1 4 121

01/10/9 3 10 154F-76 1 4 119

01/10/10 1 3 154A-35 1 202 111

01/10/10 5 18 154H-124 0 184 111

01/10/11 3 20 154B-322 1 60 10201/10/11 5 27 154J-3 0 440 102

01/10/11 4 12 154D-111 2 94 101

Reduce the call dropAddneighbor list

CAI Msg. BSM data

Optimization S City


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Optimization S City

External Interference

Test ToolSpectrum Analyzer

Shut Down The Illegal

Transmitter

Drive Test S City


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Drive Test S City

Ec/Io >= -12dB in 99.1% Area.

Ec/Io Result

Drive Test S City


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Rx>=-85dBm in 99.44% Area.

Drive Test S City

Rx_Level Result

Summary to Dense City


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Summary to Dense City

Careful site layout Avoid high site location

Right antenna selection

Set the proper power parameters

The subscribers increase rapidly

The system has been expanding

Summary to Other Scenario


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Summary to Other Scenario

Repeater solution

PN delay

Hot spot traffic

Power parameters

PN pollution

Coverage overlapPlains

Highlands

Roads

Application experiences in other environments

Consideration

Radio Network Optimization


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Radio Network Optimization

More information You can find more information about RF planning

and optimization on HUAWEIs homepage.

http://support.HUAWEI.com


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2 Cdma RNP Presentation-new

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