Planning 3G Network Base on 2G Network

8/14/2019 Planning 3G Network Base on 2G Network

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HUAWEI TECHNOLOGIES CO., LTD.

www.huawei.com

Huawei Confidential

Security Level: confidential2008-5-11

Planning 3G networkbase on 2G network

Huawei Northwest Africa Region

RNP Solution Manage: William.chen

[email protected]

3G network planning introduce

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HUAWEI TECHNOLOGIES CO., LTD. Page 2Huawei Confidential

Agenda

2G Operator advantage

Site resource

Human resource

Subscriber

Coverage Prediction by 2G drive test

Traffic Prediction by 2G

Reuse 2G existing resource

The Expect of Mobilis about RNP

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Evolution from 2G(GSM) to 3G(WCDMA)Evolution from 2G(GSM) to 3G(WCDMA)

Evolution

10K

100K

1M

10M

GPRS30~40kbps

EDGE80~120Kbps

GSM9.6Kbps 2G/2G+

3G

1G

Rate (bps)

UMTS R99DL: 2MbpsUL: 384Kbps

HSPADL: 14.4MbpsUL: 5.76Mbps

HSPA+DL: 28MbpsUL:11.5Mbps

LTEDL: 100MbpsUL: 50Mbps

Low Bandwidth:Voice Services &

Fewer Low-speedData Services

High Bandwidth:

Voice Services &

Rich High-speed

Data Services



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2G Operator face challenge

Plan a future-proof network

Business Challenges

Not enough experienced 3G engineers

A fast and successful launch

Want excellent UMTS performance

right from start

TCO saving

Fast and effective optimization

HSDPA planning

Technical Challenges

Coverage planning for

complex urban areas

UMTS/GSM interoperability

Indoor coverage

Interference control

Coverage prediction accuracy

2G resource + Huawei experience



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Use 2G RNP Resource for 3G Planning

Coverage Prediction

base on 2G

Traffic statistics

base on 2G

Soft/hard

Resourcebase on 2G

2G Resources

3G Network

Voice

Videophone

Internet

Videostreaming

Onlinegame

13.36%

86.65%86.21%85.04%80.56% 83.70%

0.00%

20.00%

40.00%

60.00%

80.00%

100.00%

Indoor

PS384

Indoor

PS144

IndoorCS64 IndoorVoice In-carCS64 In-carCS64

Outage

Kowloon(Sunday)



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Agenda

2G Operator advantage




Case Study of reuse 2G resource



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Planning Strategy base on 2G

Planning Principle

& Strategy

Pre-Planning

Dimension

Nominal Planning

Simulation

Detailed Planning

Parameter

nNo impact on 2G: less 2G-3G handovern2G-3G co-coverage: 2G-3G co-cover area

nReuse 2G resource: soft/hard resource

nImprove user experience: avoid interference

nAntenna parameters

nPropagation model

nPenetration loss

nTraffic model

nRF parameters

nPropagation model

nSite location

nTraffic model

n 2G antenna high

n 2G propagation model tuning

n 2G traffic model reference

n 2G site information

n 2G antenna direction/down-title

n Feeder system parameters

n 2G coverage prediction

n 2G problem area

nEngineer parameters

nnetwork parameters

n 2G Neighbor cell configuration

n LAC/RAC configuration



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3G Coverage Predictionbased on 2G DT data.

2G Drive Test Data

3G Coverage

Prediction

3G coverage prediction3G coverage prediction

DTPDrive Test Based Prediction) improve the accuracy of prediction

CPICH RSCP based on 2G DT data

Coverage prediction

With cost/Hata231model

When co-sited, DTP method can be used to further

increase coverage prediction accuracy by up to 20%.



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Case no consideration of the parapet wall, Prediction

result is optimistic

Prediction result Driver test result

Normal coverage prediction

n Traditional propagation has error even after being

tuned;

n Traditional propagation can not consider the effect of

Parapet, and increase the single of Sidelobe and

Backlobe.

Traditional prediction problemTraditional prediction problem



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Comparison between DT and Prediction based on 2G

nThe result include RSCP and Ec/Io between drive test and prediction

based on 2G is very close;

nThe signal level distribution is same between those;

Increase the accuracy of Prediction

Drive Test

Prediction based on 2G DT



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How can 2G drive test result be used for 3G coverage prediction?

PPilot - 3G Pilot Tx power PBCCH- 2G BCCH Tx power

Lmisc-3G- 3G feeder loss Lmisc-2G- 2G feeder loss

Gant-3G 3G antenna gain Gant-2G 2G antenna gain

PL3G 3G pathloss PL2G 2G pathloss

Y 3G fequencyMHz X 2GfrequencyMHz

33.9 * lg (Y / X) pathloss offset due to frequency

R BCCH reciver signal strength by driver test

PPilot- 3G Pilot Tx power PBCCH- 2G BCCH Tx power

Lmisc-3G- 3G feeder loss Lmisc-2G- 2G feeder loss

Gant-3G 3G antenna gain Gant-2G 2G antenna gain

PL3G 3G pathloss PL2G 2G pathloss

Y 3G fequencyMHz X 2GfrequencyMHz

33.9 * lg (Y / X) pathloss offset due to frequency

R BCCH reciver signal strength by driver test

)X/Y(lg*9.33)GG()LL()PP(R

)X/Y(lg*9.33)RGLP(GLP

)X/Y(lg*9.33PLGLP

PLGLP

2Gant3Gant2Gmisc3GmiscBCCHPilot

2Gant2GmiscBCCH3Gant3GmiscPilot

2G3Gant3GmiscPilot

3G3Gant3GmiscPilot

++=

++=

+=

+=

cE

Theory analysis

It is recommend to be applied for

co-site planning



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2G Drive Test result

Normal Ec/Io Prediction

Find out the problem point by 2G DT

3G coverage predictionshows that the Ec/Io isgood in this area.

Actually there aresome high buildingblock the signal

2G drive test result showsthere is coverage problemin here.

New site is added toimprove the coverage



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lg(Y/X)*33.9)G(G)L(L)P(PRE2Gant3Gant2Gmisc3GmiscBCCHPilotc

++=

137.99143.32max CL in UL

1.371.37CL_UL - CL_DL

-121.64-126.14Rx Sensitivity in UL

-93.36-98.69Min. Required RxLev of GSM

2.002.00Frequency Correction Loss

1.001.00Combiner/Diplexer Loss

43.0043.00GSM1800 BCCH Tx Power

139.36144.69CL in downlink

50%50%UL loading

1.601.60NF of NodeB Rx

21.0021.00Max Power of UE

CS64KAMR12.2KParameters

Calculate the Couple Loss

for services

Difference between UL and DL

Calculate the min required

Rx level of GSM

Find out the problem point by 2G



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Density Distribution

0%

5%10%

15%

20%

25%

30%

35%

40%

45%

50%

-95 -85 -75 -65 -55 -45 -35 -25 -15

Indoor coverage prediction by 2G DT

Installation of Pico-RRU

- Easy to Install



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Agenda

2G Operator advantage (Resource)




The Expect of Mobilis about RNP



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n Define 3G subscriber distribution based 2G traffic statistic

n Define 3G traffic model refer to 2G traffic model

n Define 3G hot spot and VIP area or BH (busy hour) based 2G traffic statistic

VIP zones and user profiledefinitions VIP Zone

Rejection Ratio3G Simulation based on 2G Traffic

VIP userdistribution

0.5%

Whole NetworkRejection Ratio

2.4%

3G traffic prediction by 2G traffic



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Case study for traffic prediction

n Using 2G BH traffic map to prediction 3G traffic

AMR Traffic distribution inBusy hour of 2G

Dubai Traffic statistic

Phase1

Phase2

Phase3

Red and Greenrepresent thecongestion cell

Be assumption that 3G traffic distribution is same

proportion as 2G, and then 3G traffic or congestioncan be predicted.



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Agenda








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Reusing Existent 2G RAN Resources

Unified 2G/3G CN Co-Spectrum ResourcesCo-Site

Co-antenna/feeder Co-transmission Reuse 2G RNP Resources

n Reducing CAPEX & OPEX

n Fast 3G network deployment

Reusing Existent 2G RAN Resources

GSMUMTS



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n Reduce site acquisition time;

n Save new site rents & construction

costs;

n Share existing supporting

equipments

n

StorageBattery

Power

AirConditioner

BTS

Node B

Co-transmission

Co-feeder

Co-site

Shared Power

supplier

Shared feeder

system

3G Node B

2G BTS

Sharing 2G Resources



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n Fractional PPP/ATM over E1/T1 to support co-transmission with 2G BTS

n Effectively reusing 2G spare transmission resources for 3G

n Supporting E1/T1 cross-connection, no needs for additional cross-connectionequipments

n Saving leased line rents

Co-Transmission Solution

BTS

RNC

BSC

Node B

2G/BTSData

2G/BTSData

2G/BTSData

2G/BTSData

FractionalPPP/ATM

FractionalPPP/ATM

FractionalPPP/ATM

FractionalPPP/ATM

Combine toE1/T1 slots



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Co-site constructed principle

nCo-site non co-

feeder

nCo-site and co-feeder

UMTS

RRU

GSMBTS UMTS

BBU

UMTS

RRU

GSMBTS UMTS

BBU

UMTS

RRU

GSMBTS UMTS

BBU

SASU

n Four port antenna n SASU

n Less impact on the GSM system

n Select appropriated cosite solution base actuarial condition

Co-site and non co-feeder

is recommended

n Minimum impact on GSM

system;

n Avoid the interference

between GSM and UMTS;

n Save the investment;

n UMTS networkoptimization will not impact

GSM network.



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Co-Antenna/Feeder Solution

BTS Node B

BTS Node B

BTS Node BBTS Node B

Existent

BTS

Independent Antenna &

FeederIndependent Antenna & Shared

Feeder

Shared Antenna & Independent Feeder Shared Antenna & Feeder

Diplexer

Tx Filter

Diplexer Diplexer

4 portsDual polarizationDual bands

2 portsDual polarizationDual bands



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Shared Antenna Installation Place

Shared

tower

Tower can be shared for 2G and

3G antenna

Shared

top of

building

The distance between 2 antennasshould meet the requirements of

isolation

Shared

pole

Vertical isolation between the 2

antennas should be noticed



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UMTS900M SASU Application Scenarios

L N A

Node BBTS

TMA

UMTS TX

GSM&UMTS RXD

BTS BBU

RRUTMA

SASU

RXD TX/RXM

TX/RXM RXD

GSM TX

GSM&UMTS RXM

TMA Optional

TMA Optional

l 2G BTS can combine all TRX on one TX antenna

l This solution is mostly suitable for BTS with small 2G capacity

L N A



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UMTS900/GSM900 Case study

ProposedAntenna Config900/2100 UMTS

Trial

Nokia

GSM 900

2 x 2 x 2

x x

x xx x

New 2100x-polarantenna

2100MHz

900 MHz

MHA

MHA

T

T

L N A

HuaweiUMTS

900 1x1x1 &UMTS2100 1x1x1

MHA

MHA

ASU solution

x x

x xx xx xx xx x

T

2* New FeedersPreferable feederType LDF 7-50

This design is for

1. S-1604Trangie : 100m,existing feedertype LDF 7-50

2. S-1603 Warren :100m, existingfeeder typeLDF 7-50

Existing Feeders

2* Existing 900 MHz

single-polar cornerreflect antenna

Note:Kathrein

MHA, only 1

port for DCinput, power

supplied

from Bias T



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-108

-104

-100

-96

-92

-88

12:40:00

12:43:27

12:46:54

12:50:21

12:53:48

12:57:15

13:00:42

13:04:09

13:07:37

13:11:03

13:14:30

13:17:57

P r i ma r y R T WP ( d B m) S e c o n d a r y R T WP ( d B m)

Test Result Analysis

n Lab Simulation Scenario:

UMTS: BBU+RRU NodeB

Path loss:109dB

GSM Mobile Tx Power: 33dBm

n Average RTWP for no interference:-105.78dBm

n Average RTWP for 4.2M before optimization:- 96.82dBm

n Average RTWP for 4.2M after optimization:- 105.27dBm

n Field Test Scenario:

UMTS: BBU+RRU NodeB

Average RTWP in night:-105dB

Test time:12:00~14:00

0.6-105.4Secondary RTWP

0.5-104.5Primary RTWPWithoutDT Call

0.5-105.6Secondary RTWP

0.6-104.4Primary RTWPWith DT

Call

Ave Rise(dB)

Average(dBm)

RTWP



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Agenda








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UAE Etisalat - 2G/3G Inter-working

n UAE Etisalat 2G/3G inter-working

p Huawei 3G network and ERICSSON, SIMENS/NEC, ALCATEL, and Motorola 2G networks

p 98% success rate of inter-system handover

p Subscribers hardly noticed the handover between the two networks

90.0%

91.0%

92.0%

93.0%

94.0%

95.0%

97.0%

98.0%99.0%

100.0%

96.0%

1000

2000

3000

4000

6000

7000

8000

5000

0Nov-04 Dec-04 Jan-05 Feb-05 Mar-05 Apr-05 May-05 Jun-05

InterRAT HO_SUCC_RATE(%) Handover Attempts

Average daily attempts Average SR

Success rate of inter-system handover for eight consecutive

months of Etisalat3G 2G

+



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Multi-sector solution for

dense urban (CBD)coverage

Street sites(micro cells)for outdoor coverage in CBD

Special solution(Up-tilt antenna) for

indoor coverage

Hong Kong PCCW UMTS Project

n Customized solutions

for variouscomplicated scenarios.

n Seamless coverage of

high-speed data

service

n Solved various challenges: coverage, interference, co-site, 2G/3G interoperability

n Achieved best 3G network performance in Hong Kong.

AMR call drop rate < 1%; voice call setup latency < 6s; inter-frequency HHO success rate >

98%; FTP throughput > 330kbps (both UL & DL); HSDPA throughput reach to 6.5Mbps

RTP (Ray Tracing) for more

accurate coverage prediction Reduce CAPEX & OPEX by co-site

solution Reused more than 85% existing GSM sites

Avoid interference by RFadjusting, additional filter,frequency reallocation



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Reuse 2G site resource to reduce cost and

deployment time

Co-site over 85n Reduce site acquisition time

n Save leasehold and engineering expenses

for new site

n Share transport, power and other facilities 2G BTS 3G Node B

Co-antenna and feeder over 60

n Save leasehold expenses for antenna and feeder

n Shorten business negotiation time

Co-transport resource

n Make good use of 2G spare transmission

n No interference with existing 2G network

Several antennas on one

side of roof

BTS3812E

2G indoor Node B

Portable Distributed 3G Node B



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HUAWEI TECHNOLOGIES CO., LTD.

www.huawei.com

Huawei Confidential

Security Level: confidential2008-5-11

Thank You

www.huawei.com

http://www.huawei.com/http://www.huawei.com/http://www.pdffactory.com/http://www.pdffactory.com/http://www.huawei.com/http://www.huawei.com/

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Planning 3G Network Base on 2G Network