Planning 3g Network Base On 2g Network

Security Level: confidential

2008-5-11

Planning 3G network base on 2G network 3G network planning introduce www.huawei.com

Huawei Northwest Africa Region RNP Solution Manage: William.chen [email protected] HUAWEI TECHNOLOGIES CO., LTD.

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Huawei 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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Page 2

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

(bps) LTE HSPA+

10M

1M

HSPA UMTS R99

Low Bandwidth: Voice Services & Fewer Low-speed Data Services

DL: 28Mbps UL:11.5Mbps

DL: 14.4Mbps UL: 5.76Mbps

DL: 2Mbps UL: 384Kbps

100K

3G

EDGE

High Bandwidth: Voice Services & Rich High-speed Data Services

80~120Kbps

GPRS 30~40kbps

GSM 9.6Kbps

10K

DL: 100Mbps UL: 50Mbps

2G/2G+

1G

Evolution HUAWEI TECHNOLOGIES CO., LTD. PDF created with pdfFactory Pro trial version www.pdffactory.com

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Page 3

2G Operator face challenge Technical Challenges Coverage prediction accuracy

Business Challenges

Interference control

Plan a future-proof network

Indoor coverage

TCO saving

UMTS/GSM interoperability

Want excellent UMTS performance

Coverage planning for

right from start

complex urban areas

A fast and successful launch

Fast and effective optimization

Not enough experienced 3G engineers

HSDPA planning

2G resource + Huawei experience

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Page 4

Use 2G RNP Resource for 3G Planning 2G Resources

Kowloon(Sunday) 100.00% 80.00%

80.56%

83.70%

Indoor PS384

Indoor PS144

85.04%

86.21%

86.65%

60.00% 40.00% 20.00% 13.36% 0.00%

Coverage Prediction base on 2G

Soft/hard Resource base on 2G …

Traffic statistics base on 2G …

…

Online game

Video phone Voice

Indoor CS64 Indoor Voice In-car CS64 In-car CS64 Outage

Internet

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Video streaming

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Agenda 2G Operator advantage Coverage Prediction by 2G drive test Traffic Prediction by 2G Reuse 2G existing resource Case Study of reuse 2G resource

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Planning Strategy base on 2G nNo impact on 2G: less 2G-3G handover n2G-3G co-coverage: 2G-3G co-cover area

Planning Principle & Strategy

nReuse 2G resource: soft/hard resource nImprove user experience: avoid interference

Pre-Planning Dimension

Nominal Planning Simulation

Detailed Planning Parameter

nAntenna parameters

n 2G antenna high

nPropagation model

n 2G propagation model tuning

nPenetration loss

n 2G traffic model reference

nTraffic model

n 2G site information

nRF parameters

n 2G antenna direction/down-title

nPropagation model

n Feeder system parameters

nSite location

n 2G coverage prediction

nTraffic model

n 2G problem area

nEngineer parameters

n 2G Neighbor cell configuration

nnetwork parameters

n LAC/RAC configuration

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Page 7

3G coverage prediction DTP（Drive Test Based Prediction) improve the accuracy of prediction

3G Coverage Prediction based on 2G DT data.

Coverage prediction With cost/Hata231 model

2G Drive Test Data

3G Coverage Prediction

CPICH RSCP based on 2G DT data

When co-sited, DTP method can be used to further increase coverage prediction accuracy by up to 20%. HUAWEI TECHNOLOGIES CO., LTD. PDF created with pdfFactory Pro trial version www.pdffactory.com

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Traditional prediction problem 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.

Case no consideration of the parapet wall, Prediction result is optimistic Prediction result

Driver test result

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Increase the accuracy of Prediction 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;

Drive Test Prediction based on 2G DT

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Page 10

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

Ec = PPilot − L misc −3G + G ant −3G − PL3G = PPilot − L misc −3G + G ant −3G − PL 2G − 33.9 * lg(Y / X ) = PPilot − L misc −3G + G ant −3G − (PBCCH − L misc − 2G + G ant − 2G − R ) − 33.9 * lg(Y / X ) = R + (PPilot − PBCCH ) − ( L misc −3G − L misc −2G ) + (G ant −3G − G ant − 2G ) − 33.9 * lg( Y / X) It is recommend to be applied for co-site planning

P - 3G Pilot Tx power PPilot Pilot - 3G Pilot Tx power

P - 2G BCCH Tx power PBCCH BCCH - 2G BCCH Tx power

LLmisc-3G - 3G feeder loss misc-3G - 3G feeder loss

LLmisc-2G - 2G feeder loss misc-2G - 2G feeder loss

G – 3G antenna gain G – 2G antenna gain Gant-3G Gant-2G ant-3G – 3G antenna gain ant-2G – 2G antenna gain PL － 3G pathloss PL3G 3G － 3G pathloss

PL － 2G pathloss PL2G 2G － 2G pathloss

Y Y –– 3G 3G fequency fequency（ （MHz MHz） ） XX –– 2Gfrequency 2Gfrequency（ （MHz MHz） ） 33.9 33.9 ** lg lg (Y (Y // X) X) –– pathloss pathloss offset offset due due to to frequency frequency R R –– BCCH BCCH reciver reciver signal signal strength strength by by driver driver test test

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Page 11

Find out the problem point by 2G DT Normal Ec/Io Prediction

3G coverage prediction shows that the Ec/Io is good in this area.

2G drive test result shows there is coverage problem in here.

New site is added to improve the coverage

Actually there are some high building block the signal

2G Drive Test result

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Page 12

Find out the problem point by 2G Ec = R + (PPilot − PBCCH ) − (Lmisc − 3G − Lmisc − 2G ) + (Gant − 3G − Gant− 2G ) − 33.9 * lg(Y/X) Parameters

AMR12.2K

CS64K

Max Power of UE

21.00

21.00

NF of NodeB Rx

1.60

1.60

UL loading

50%

50%

-126.14

-121.64

…

…

143.32

137.99

CL_UL - CL_DL

1.37

1.37

CL in downlink

144.69

139.36

GSM1800 BCCH Tx Power

43.00

43.00

Combiner/Diplexer Loss

1.00

1.00

Calculate the min required

Frequency Correction Loss

2.00

2.00

Rx level of GSM

-98.69

-93.36

Rx Sensitivity in UL … max CL in UL

Min. Required RxLev of GSM

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Calculate the Couple Loss for services

Difference between UL and DL

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Page 13

Indoor coverage prediction by 2G DT

Density Distribution 50% 45% 40% 35% 30% 25%

Installation of Pico-RRU - Easy to Install

20% 15% 10% 5% 0% ≤-95

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≤-85

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≤-75

≤-65

≤-55

Page 14

≤-45

≤-35

≤-25

≤-15

Agenda 2G Operator advantage (Resource) Coverage Prediction by 2G drive test Traffic Prediction by 2G Reuse 2G existing resource The Expect of Mobilis about RNP

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Page 15

3G traffic prediction by 2G traffic 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

0.5%

VIP zones and user profile definitions

VIP user distribution VIP Zone Rejection Ratio

3G Simulation based on 2G Traffic

2.4%

Whole Network Rejection Ratio

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Case study for traffic prediction n Using 2G BH traffic map to prediction 3G traffic AMR Traffic distribution in Busy hour of 2G

Red and Green represent the congestion cell

Phase1

Phase2

Phase3 Dubai Traffic statistic

Be assumption that 3G traffic distribution is same proportion as 2G, and then 3G traffic or congestion can be predicted.

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Agenda 2G Operator advantage (Resource) Coverage Prediction by 2G drive test Traffic Prediction by 2G Reuse 2G existing resource Case Study of reuse 2G resource

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Page 18

Reusing Existent 2G RAN Resources Reusing Existent 2G RAN Resources Unified 2G/3G CN

Co-Spectrum Resources

Co-Site

UMTS

Co-antenna/feeder

Co-transmission

Reuse 2G RNP Resources

n Reducing CAPEX & OPEX n Fast 3G network deployment

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GSM

Page 19

Sharing 2G Resources Co-site

Air Conditioner

Cofeeder

Cotransmission

BTS Node B Storage Battery

Power

n Reduce site acquisition time; n Save new site rents & construction

3G Node B

costs; n Share existing supporting equipments n ……

2G BTS

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Shared Power supplier Shared feeder system Huawei Confidential

Page 20

Co-Transmission Solution Fractional Fractional PPP/ATM PPP/ATM

Node B

Combine to E1/T1 slots

2G/BTS 2G/BTS Data Data

RNC

Fractional Fractional PPP/ATM PPP/ATM

2G/BTS 2G/BTS Data Data

BSC

BTS

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-connection equipments n Saving leased line rents HUAWEI TECHNOLOGIES CO., LTD. PDF created with pdfFactory Pro trial version www.pdffactory.com

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Page 21

Co-site constructed principle n Less impact on the GSM system n Select appropriated co–site solution base actuarial condition；

n Co-site non cofeeder

n Co-site and co-feeder n Four port antenna

n SASU

SASU UMTS RRU

GSM BTS

UMTS BBU

UMTS RRU

GSM BTS

UMTS BBU

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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 network optimization will not impact GSM network.

UMTS RRU

GSM BTS

UMTS BBU

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Page 22

Co-Antenna/Feeder Solution

Diplexer

BTS

Node B BTS

Independent Antenna & Feeder

Existent BTS

4 ports Dual polarization Dual bands

Node B

Independent Antenna & Shared Feeder 2 ports Dual polarization Dual bands

Tx Filter Diplexer

BTS

Diplexer

Node B BTS

Shared Antenna & Independent Feeder

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Node B

Shared Antenna & Feeder

Page 23

Shared Antenna Installation Place Shared tower

Shared top of building

Shared pole

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è

Tower can be shared for 2G and

3G antenna

è

The distance between 2 antennas

should meet the requirements of isolation

è

Vertical isolation between the 2

antennas should be noticed

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Page 24

UMTS900M SASU Application Scenarios 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

l

GSM TX UMTS TX GSM&UMTS RXM GSM&UMTS RXD

TMA Optional

TMA

L N A

SASU

RXD TX/RXM

TMA Optional

TMA

TX/RXM

RRU

RXD BTS

BTS

Node B

BBU

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UMTS900/GSM900 Case study

This design is for 1.

2.

S-1604 Trangie : 100m, existing feeder type LDF 7-50

New 2100 x-polar antenna

Note: Kathrein MHA, only 1 port for DC input, power supplied from Bias T

S-1603 Warren : 100m, existing feeder type LDF 7-50

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2* New Feeders Preferable feeder Type LDF 7-50 M H A

M H A

M H A

M H A

2100MHz T T

T L N A

Proposed Antenna Config 900/2100 UMTS Trial

2* Existing 900 MHz single-polar corner reflect antenna

xx xx xx

ASU solution

xx xx xx xx xx xx

Huawei UMTS 900 1x1x1 & UMTS2100 1x1x1 Huawei Confidential

Nokia GSM 900 2x2x2 Page 26

900 MHz Existing Feeders

Test Result Analysis n Lab Simulation Scenario:

n Field Test Scenario:

UMTS: BBU+RRU NodeB

UMTS: BBU+RRU NodeB

Path loss:109dB

Average RTWP in night:-105dB

GSM Mobile Tx Power: 33dBm

Test time:12:00~14:00 -88 -92 -96 -100 -104

Primary RTWP(dBm)

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

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With DT Call Without DT Call

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13:17:57

13:14:30

13:11:03

13:07:37

13:04:09

13:00:42

12:57:15

12:53:48

12:50:21

12:46:54

12:43:27

12:40:00

-108

Secondary RTWP(dBm)

RTWP

Average (dBm)

Ave Rise (dB)

Primary RTWP

-104.4

0.6

Secondary RTWP

-105.4

0.6

Primary RTWP

-104.5

0.5

Secondary RTWP

-105.6

0.5

Page 27

Agenda 2G Operator advantage (Resource) Coverage Prediction by 2G drive test Traffic Prediction by 2G Reuse 2G existing resource Case Study of reuse 2G resource

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UAE Etisalat - 2G/3G Inter-working InterRAT HO_SUCC_RATE(%) 100.0% 99.0% 98.0% 97.0% 96.0% 95.0% 94.0% 93.0% 92.0% 91.0% 90.0%

Handover Attempts 8000 7000 6000 5000 4000 3000 2000 1000

Nov-04 Dec-04 Jan-05 Feb-05 Mar-05 Apr-05 May-05 Jun-05 Average daily attempts

0

Average SR

+

Success rate of inter-system handover for eight consecutive months of Etisalat 3G

n UAE Etisalat 2G/3G inter-working

2G

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

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Hong Kong PCCW UMTS Project n Customized solutions for various complicated scenarios.

Special solution (Up-tilt antenna) for indoor coverage

n Seamless coverage of high-speed data service

Multi-sector solution for dense urban (CBD) coverage

“Street sites” (micro cells) for outdoor coverage in CBD

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

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 RF adjusting, additional filter, frequency reallocation …

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 …… HUAWEI TECHNOLOGIES CO., LTD. PDF created with pdfFactory Pro trial version www.pdffactory.com

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Reuse 2G site resource to reduce cost and deployment time Co-site — over 85％ n n

n

2G indoor Node B

Reduce site acquisition time Save leasehold and engineering expenses for new site 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

BTS3812E Several antennas on one side of roof

Portable Distributed 3G Node B

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Security Level: confidential

2008-5-11

Thank You www.huawei.com www.huawei.com

HUAWEI TECHNOLOGIES CO., LTD.

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