Umts900 deployment strategy v1.0

HUAWEI TECHNOLOGIES CO., LTD.

Huawei UMTS900M Solution and Deployment Strategy

Agenda• UMTS900 Solution & Deployment Strategy

• Huawei Refarming Solution

• 2G Traffic Transfer Strategy

• GSM900 Frequency re-plan and performance

• Inter-RAT Operation Solution

• Antenna Solution

• UMTS Refarming Application

HUAWEI TECHNOLOGIES CO., LTD. Page 3Huawei Confidential

Why Refarming? Demands from Data Growth

Data services offset the falls of voice revenue and becomes the key driver to growth

• Voice ARPU falls in 4 countries

Coverage Requirement

• No 3G service in rural area• Coverage gap between 2.1GHz and 900MHz

ServiceRequirement

• Poor or No data service in rural area(inc. fixed data access)

CapacityRequirement • 2.1GHz spectrum insufficient for 3G capacity

CostRequirement • TCO (UMTS 900MHz) << TCO (UMTS 2.1GHz)

EvolutionRequirement

• partial 900MHz frequencies spared as GSM subscribers moving to UMTS gradually

• UMTS grows as GSM turns down


Refarming Get Better Network on Lower Cost

Cell Coverage Comparison

n Radio planning U900 vs. U2100: about 6dB better link budget in U900, Cell Coverage of U900 2.5~3 times larger than U2100

n Radio planning U900 vs. G900: Link budget +6-9dB, Better receiver sensitivity

n Capacity planning: Co-site for higher capacity sharing, 50% fewer sites with U900 than U2100


Feasibility Analysis of UMTS900 RefarmingC

halle

nges

& S

olut

ion

Industry Maturity ( Product and terminal industry)

License Permission on UMTS900

SpectrumAvailability

TechnicalFeasibility

Voice Migration

Indu

stry

C

hain

• Configurable Band width of UMTS carrier

•More Valuable spectrum left to GSM retained

•frequency allocation

•GU adjacent frequency interference impact

•Inter-RAT Operation

•Migration of existing GSM traffic•TFR Solution•Evolution from2G to 3G

Deployment Strategy and RNP

CostAffordability

• co-site• co-antenna• co-cabinet• co-accessories• co-transmission


Huawei, Major Contributor to Refarming Industry

Trial

Deployment

Enhancement

Pha

se 2

• Leader in commercialization - Optus, Australia- SFR, France- VDF, Romania- Teliasonera, Finland- AIS, Thailand, etc.

• 1st Tighter Frequency Reuse• 1st Single-RAN refarming• 1st antenna sharing

• Pioneer for technical trials - Orange, France- Proximus, Belguim- Globe, Bulgaria, etc.

• 1st verify “Buffer Zone” theory• 1st test in-build U900 performance• 1st verify negligent impact to G900P

hase

1P

hase

3 • 1st to deploy G/U SDR850MHz and SDR900MHz • 1st to deploy U900 on 4.2MHz Bandwidth • 1st to deploy Tighter Frequency Reuse


Typical Deployment Strategy for Refarming

n No 3G service yet anywheren No 2.1Ghz spectrumn Sufficient 900Mhz spectrum for

network-wide refarming

n No UMTS service coverage yetn voice traffic is low, easy to

release frequencies for UMTSn Poor or No fixed broadband

n Indoor coverage is not goodn Blind spots in dense urbann Frequent handover between UMTS

2.1Ghz and GSM 900Mhz due to coverage quality difference

Extend 3G Coverage In

Sub-urban & Rural

Extend 3G Coverage In

Sub-urban & Rural

Initial 3G Roll-out In

All areas

Initial 3G Roll-out In

All areas

Improve 3G Coveragein

Urban area


Urban area

U900

U2100


• UMTS2100 for Urban coverage • UMTS900 refarming for Suburban and Rural coverage

Extend 3G Coverage in

Suburban & Rural

Extend 3G Coverage in

Suburban & Rural

Network charactern No UMTS coverage yetn low voice traffic, easy to release

frequencies for UMTSn Poor or no data service

Typical UMTS900 Deployment Scenarios

RNP Focus on n Coverage Requirementn Service Requirement n Cost Requirement


• UMTS2100 for Urban coverage • UMTS900 refarming for urban coverage and capacity



Urban area


Urban areaUrban area

Network charactern Indoor coverage not goodn Blind spots in Dense Urbann Capacity supplementary for

UMTS 2.1GHz

RNP Focus on:n Coverage Requirementn Capacity Requirement


Initial 3G Roll-out in

All areas

Initial 3G Roll-out in

All areas All areas

n Network charactern No 3G service yet anywheren No 2.1GHz spectrumn Sufficient 900MHz spectrum for

network-wide refarming

n RNP Focus onn Coverage Requirementn Cost Requirement


• U2100 is mainly covered in the urban and core towns• Refarming the GSM900 all over the network






• Co-Antenna Solution



Flexible Huawei UMTS Refarming Solution

n Configurable Bandwidth of UMTS carrier

ü Flexible Between 4.2MHz and 5MHz from RAN Release12.0 with 0.1MHz steps for both downlink and uplink

ü Efficiently suitable for 850,900,1700,1800 and 1900MHz frequencyü UU4.2M solution（two adjacent 4.2M UMTS carriers）is ready from SRAN releas3.0ü 3.8MHz solution can be designed for a network

according to actual conditions.

n More valuable spectrum left to GSM use

GSMGSM

guard

UMTS


Flexible Huawei UMTS Refarming Solution

n Sandwich frequency solutionü Sandwich allocation flexibly puts U900 carrier

into the proper spectrum location based on the UU solution and interference consideration with other operators.

n Edge allocation solutionü Edge allocation solution has lower frequency

utilization since the more frequency guard bandwidth shall be reserved to avoid the risk.

ü Min. frequency gap (f1): 2.2MHz separationü Min. frequency gap (f2): 2.6MHz between

UMTS900 and the GSM900 of neighbour operator

n Sandwich frequency solution is preferred

Sandwich frequency solution

Edge frequency solution


n16% less spectrum bandwidth needed for UMTS

4.2MHz for UMTS Tighter Frequency Reuse

nUp to 44% less spectrum bandwidth needed for GSM

nNo Negative Impact to GSM

Sandwich & Buffer Zone

SingleRAN/ SDR

Reuse of Legaciesn Guarantee better coveragen Maximize value of investment

n Easy to maintenance n Improve 2G/3G performance

2G Traffic Transfer Strategy n Coverage/Load/Service Intersystem Balance nReduce CS block raten Improve data throughput

Huawei Refarming Solution highlights

RefarmingSolutions

1 2

3

45

6


UMTS 900 Refarming RNP Procedure

UMTS900 frequency allocation Strategy

2G capacity Migration and G900 frequency re-plan

UMTS900 Dimension and Plan

Inter-RAT Operation design

GU antenna solution

End

Start

Refarming key points:n Interference Analysis among

UMTS900 & other Systems

n Capacity Analysis to meet both GSM & UMTS traffic requirement

n GSM900 Frequency Planning

n Inter-RAT Operation Solution between GSM900 & UMTS900








HUAWEI Confidential Page 17

2G Traffic Transfer ProcedureA>BA>B

User increasing

prediction

User increasing

prediction B: Traffic

requirement

B: Traffic

requirement

A: Existing

Configured capacity

A: Existing

Configured capacity

2G Traffic transfer2G Traffic transfer

Frequency bandwidth

After Refarming

Frequency bandwidth

After Refarming

Required Frequency

reuse Density

Required Frequency

reuse Density

N

Reduce the

Configuration

Reduce the

Configuration

G900->G1800G900->G1800 G900->U900G900->U900

G900 TFR G900 TFR

Y

Meet Required

frequency reuse

density

Meet Required

frequency reuse

density

YNFinal G900 site

configuration

Final G900 site

configuration


2G traffic migration Strategy-1（G900->G1800) n Scenarios

ü GSM 1800M is available and continuously covered;

ü GSM 1800M has rich frequency;

ü G900 and G1800 are deployed with Co-site

n Migration Strategyü Active HR, raise its proportion configured up to

50%~70%ü Transfer traffic from G900 to G1800 by add site configuration

depend on the required frequency reuse factor from 9~12ü Increase 1800M sites co-sited with G900

GSM1800 GSM1800 GSM1800

GSM 900M GSM 900M GSM 900M

Better cell handover

Load balance handover

Coverage edge handover

n Traffic sharing Strategyü Camp on G1800 and G900 randomly in the idle state,

UE prefers to make the cell selection to G1800.ü Allow intra-frequency better cell handover;ü Load handover is performed according to the traffic


2G traffic migration Strategy-2（G900->U900)

n Migration Strategyü Active automatically the U900 service for all the existing 2G usersü Dual-mode terminal and 3G rate policies appeal to the transferred

2G userü Voice traffic shared on UMTS900 shall be dimensioned, and the

experience shall be good.ü Transfer traffic from G900 to UMTS900 with the above

preconditions.

n Traffic sharing Strategyü Terminal camp on UMTS as long as it support G/U dual-mode ü Dual-mode UE camp on GSM in no UMTS coverage areaü Voice calls remain in individual RAT cellsü PS service on dual-mode UE shall perform Cell Reselection or HO

if it enter into UMTS coverage area




UMTS 900M UMTS 900M UMTS 900M


n Scenariosü U900 is continuously covered;

ü There is no 1800 spectrum

ü G900 and U900 are deployed with co-site


UMTS Dimension Consideration

UMTS Voice Capacity Comparison

U2100R99+HSPA

F1 F1

U900 R99 +HSPA

F2 F2

U900R99+HSPA

F1 F1

U2100R99+HSPA

F2

U2100 is continuously covered;U900 is also continuously covered;

U900 is continuously covered;U2100 is NOT continuously covered;

Suggested Strategy:

Randomly CampingWith loading Balancing

Suggested Strategy:

Force to camp on F1, With service delaminating


n Migration Strategyü Active HR, raise its proportion configured up to

50%~70% to reduce the existing G900 configurationü Maintain the existing G900 configuration with the less

frequencyü The quality will deduce and Huawei TFR( tight frequency

reuse) solution will slower the trend




UMTS 900M UMTS 900M UMTS 900M


n Scenariosü There is no 1800 spectrum

ü The U900 service for the existing 2G users needs

special application

ü 2G user’s will to migration is very low for the tough

Dual-mode terminal and 3G rate policies.

2G traffic migration Strategy-3 (G900 TFR)


Tighter Frequency Reuse solution for G900 capacity

S2/2/2S3/3/2

S4/3/3

S4/4/4

n Enhanced ICCn Enhanced UISSn IBCAn AMR

n IBCAn UISS (w/o GPS)n ICC/EICCn AMR

n DTXn Power controln TFO

Anti-Interference

tech.

Industry FR LOAD 50% FR LOAD 70% FR LOAD 90%

4.8MHz Frequency Available

nBandwidth :4.8MHz@900M( 63~86) after reframing

nBCCH layer : 63~76, TCH layer:77~86

nAMR penetration:90%

n Capacity target:: traffic increase 10%, HR 50%, Site Configuration shall be S444

Huawei TFR solution Case study:

nE-ICC：Spatial-Temporal Interference Cancellation Combining

nUISS：Um Interface Software Synchronization

nIBCA：Interference Based Channel Allocation 1.00%0.80

%1.70

%95.00

%93.00

%96.20

%2.00%91.00%90.50%

DTX/PC/AMR /EICC/TFO

/UISS+IBCAS444

1.00%0.40%

1.15%

96.55%

94.80%

97.70%1.50%94.00

%93.50%DTX/PC/AMR

/EICC/TFO/UISS+IBCA

S332

1.50%0.35%

1.00%

97.00%

95.50%

98.00%1.20%94.00

%93.50%DTX/PC/AMRS222

TCH Blocki

ng rate

SDCCH

Blocking

rate

SDCCH

drop rate

SD assig

n succe

ss rate

Handover succe

ss rate

Assignment success rate

call drop rate

UL Rx Qaul(0-4)

DL Rx Qaul(0-4)

featureSite Type









Interference Type Between GSM and UMTS

nHow to calculated the interferenceACIR represents the interference between GSM900 and UMTS900

nMain interference introducenUMTS NodeB to GSM UE interference

nGSM UE to UMTS NodeB interference

nUMTS UE to GSM BTS interference

nGSM BTS to UMTS UE interference

nHow to minimize the interferencenCarrier separation minimize interference caused by adjacent carrier between GSM900 and UMTS900;

nIsolation distance minimize interference caused by same frequency between GSM900 and UMTS900.


GU Network Level Performance loss from GU adjacent frequency

0.00%0.00%0.05%0.04%0.04%0.02%0.00%0.00%0.00%0.00%0.00%0.00%2.6MHz

0.00%0.00%0.15%0.13%0.52%0.21%0.14%0.29%0.00%0.00%0.00%0.00%2.4MHz

0.79%1.63%0.86%0.89%0.63%0.43%0.48%0.83%0.00%0.00%0.00%0.00%2.2MHz

RuralUrbanRuralUrbanRuralUrbanRuralUrbanRuralUrbanRuralUrban

UMTS UL Coverage Loss (Cell Radius)

UMTS HSUPA Throughput Loss

UMTS DL R99 Capacity Loss (voice Sub.)

UMTS HSDPA Throughput Loss

EDGE DL Throughput Loss

GSM Voice Call Drop increase

GU Frequency Gap

UMTS 4.2MHz

GSMGSM

2.2MHz

0.00%0.00%0.16%0.13%0.04%0.02%0.00%0.00%0.00%0.00%0.00%0.00%2.6MHz

0.00%0.00%0.46%0.38%0.52%0.21%0.43%0.86%0.00%0.00%0.00%0.00%2.4MHz

3.80%5.01%2.68%2.66%1.89%1.28%1.39%2.48%0.00%0.00%0.00%0.00%2.2MHz




UMTS DL R99 Capacity Loss (voice Sub.)




GU Frequency Gap

4x3 frequency reuse for BCCHs, and 4x3 for TCHs

4x3 frequency reuse for BCCHs, and 1x3 for TCHs

GU900 Co-SiteUrban: ISD=750mRural: ISD=7500m


UMTS 4.2MHz

GSMGSM

2.2MHz

The worst performance of worst cells are shown as follows:

0.64%0.65%0.49%0.38%0.10%0.09%0.00%0.00%0.00%0.00%0.00%0.00%2.6MHz

0.69%0.90%0.89%0.76%4.32%1.62%2.50%2.58%0.00%0.00%0.00%0.00%2.4MHz

5.31%7.71%6.65%6.84%5.68%3.85%4.70%4.86%0.00%0.22%0.00%0.00%2.2MHz




UMTS DL R99 Capacity Loss (voice

Sub.)




GU Frequency Gap

GU900 Co-SiteUrban: ISD=750mRural: ISD=7500m

Cell Level Performance loss from GU adjacent frequency


Adjacent frequencies plan consideration for G900

l Frequency hopping, DTX & power control

enabled for TCH in adjacent carriers

GSM

l 2.6MHz frequency guard bandwidth between

BCCH and UMTS is recommended.

l PDCH assign to adjacent carriers

adjacent channels

l Adjacent carrier will be assigned to the

Underlay of Concentric Cell

l Both adjacent frequencies in the sandwich

schedule shall be not assigned in a cell.

carrier … … x y … …

Underlay

Overlay


Buffer Zone: GU co-frequency interference guard

B area is the frequency isolation area, the frequencies of G900 is different from both A and C area

C area is corresponding to UMTS coverage.

UMTS sites

Buffer zone

GSM sitesA

B

C

A area is corresponding to GSM coverage.

Proposal for buffer zone plan:nBuffer zone distance is commonly 2~3 layer sites or the distance of twice cell diameter,

nRF optimization or obstructed topography will deduce the size of buffer zone

nThe co-frequency interference signal received in the A or C shall below -110dBm

n HUAWEI buffer zone solution to solve the interference when UMTS900 sites and GSM900 sites are assigned the same frequency , but in different regions

GSM900

UMTS900 GSM900GSM900

GSM900GSM900

Spectrum allocation


Buffer Zone Case Study

CASE: Optus, Australia

GSM900 Cell1

GSM900 Cell2

UMTS900 Cell0

Buffer Zone

nBasic Info• Buffer zone locates at the edge of urban area

• ISD: 5.5km

3.2 2.2 No Buffer Zone

0.3 0.1 Buffer Zone (one site)

UE Interference Rise (dB)RTWP Rise (dB)

Node B -> UE ImpactUE -> Node B ImpactnAchievement for Buffer Zone• UL interference reduces 2.1 dB

• DL interference reduces about 3dB

GSM900 (Cell 2)

GSM900(Cell 1)

UMTS900 (Cell 0)GSM900

GSM900 (Cell 1)

GSM900


UMTS UE Ec/Io Distribution compare

0

20

40

60

80

100

>=-8 >=-10 >=-12 >=-14 >=-16 >=-18 Ec/Io

Ec/Io

Pro

gres

sive

Stat

istic

%

No Isolation One Layer Isolation

Buffer zone Impact to Performance of GU sites

nUMTS UE Ec/Io distribution compareü UMTS cell radius: 4Km;

ü GSM topology mode:4X3;

n GSM MS C/I distribution compareü GSM topology mode:4X3;

GSM UE C/I Distribution Compare(BCCH:4X3)

0%

20%

40%

60%

80%

100%

C/I>=9 C/I>=12

C/I

Prog

ress

ive

Stat

istic

None Interference Tw o Layer Isolation One Layer Isolation

GSM UE C/I Distribution Compare(TCH:4X3)

0%

20%

40%

60%

80%

100%

C/I>=9 C/I>=12

C/I

Pro

gres

sive

Sta

tistic

None Interference Two Layer Isolation One Layer Isolation

n The impact between Base Station and UE can be ignored with 2~3 layer isolation zone.

G900 Sites U900 Sites

One layer Isolation zone


Case Study: 10MHz Spectrum for Refarming

Operator B

Example: Spectrum Assignment in 900MHz

V OperatorOperator C

10MHz

How to perform GSM and UMTS refarming?

?


Case Study: Assignment of GSM TRX and UMTS Carrier

Operator B

UMTS GSM

V operatorOperator C

10MHz

Ø4.6MHz bandwidth allocated for UMTS900

Ø5.4MHz spectrum available for GSM900

4.6MHz

ØSandwich Solution recommended.

ØNo interference to neighboring operators.


Case Study: Frequency Planning for VF Italy

l Minimum 1 CH (200kHz) between UMTS900 and BCCH.

BCCH TCH UMTS900

15 channels

50 channels

23 channels10 channels 1 channel1 channel

TCH TCH

Operator B

BCCH

Operator C

U900min. 2 CHs min. 1 CH min. 2 CHs

l GSM frequency planning: SFH to spread the interference in the network.15 channels for BCCH, 1 SFH group for all TCH, i.e. MA={CH1, CH2, CH3, …, CH12}.

l 2 CHs (1 TCH + 1 guard CH) between BCCH of V operator and UMTS900 of Operator C.

l 2 CHs (1 TCH + 1 guard CH) between UMTS of V operator and BCCH of Operator B.

Frequency Planning: 1+2+2+SFH

V operator









Inter-RAT Operation Strategy 1--U900 for Rural coverage and U2100 for Urban coverage

Hot Spot & Dense Urban

UrbanSuburban & rural

UMTS2100

UMTS900

GSM900 GSM900

n Coverage zone HSPA /R99

n UMTS2100-UMTS900 inter-freq hard handover

n UMTS900/GSM inter-RAT handover

n UMTS2100 intra-freq soft handover

n UMTS900 intra-freq soft handover


Inter-RAT Operation Strategy 2--U900 for continuous coverage and U2100 for hot area capacity expansion

•The first phase of UMTS900 deployment will

be mainly for coverage continuity and

UMTS2100 absorb load in hot spot areas.

UMTS 900 Cell

GSM Cell GSM Cell GSM Cell

UMTS 900 Cell

UMTS 900 Cell

UMTS 2100 Cell

UMTS2100UMTS

900

UMTS2100

UMTS2100

UMTS900UMTS

900

UMTS900UMTS

900

UMTS900UMTS

900

T Uni-directional Handover fromUMTS 2100 cell to UMTS900 cellbased on coverage

T Uni-directional blind Handoverfrom UMTS 2100 cell to UMTS900 cell based on load T Users camp on UMTS 2100 layer

to establish R99 + HSDPA services

T Continuous UMTS layer for coverage

• All UMTS layers provide R99+HSPA

service

• Users camp on 2100 layer when available

• According to the cell load the call will be

established in 2100 layer or re-directed to

900 layer.

T Uni-directional blind Handoverfrom UMTS 900 cell to GSM900 cell based on load


Mobility Management:Roaming strategy between GSM and UMTS

3G subscribers configured to camp on WCDMA network with the higher priority by choosing the UTRAN ACCESS TECHNOLOGY in the USIM file

GSM

WCDMA WCDMA

UMTSàGSMcell reselection

GSMàUMTSPLMN or cell reselection

n Cell reselection from UMTS to GSM networksØ via Inter-system Cell Reselection : No upgrade for GSM networks

n Cell reselection from GSM to UMTS networksØ via Inter-system Cell Reselection: GSM BSS need to be upgraded to support SI2quaterØ via PLMN/Access Technology Reselection: No upgrade for GSM networks


Mobility Management:Inter-RAT handover between GSM and UMTS

CSServices

PacketServices

Camping on UMTS in idle mode Handover to 2G

Staying in 2G during the call

Call ends, Cell Reselection to 3G

Service begins…

Cell Reselection or cell Change Order to GPRS

Cell Reselection to UMTS

Cell Reselection to GPRS

UMTS cell

GSM/GPRS cell

n Unidirectional handover from UMTS to GSM is proposed for CS services.

n Bidirectional handover between UMTS and GSM by cell reselection is proposed for PS services

Note: No upgrade of GSM network for handover from 3G to 2G


UMTS2100

Idle Mode RRC setup RAB setup Connected

UMTS900

GSM

SHO

SHO

Cell R

e-s

ele

ctio

n

RA

B D

RD

LD

R

RR

C D

RD

Inte

r-RA

T H

O

RR

C R

-Dir

DR

D to

GS

M

RR

C R

-Dir

RA

B D

RD

LD

R

IFH

O

Summary for GU Mobility Startegy

Full flexibility for Traffic Management









Contents of Antenna Solution

ØCase 1: Antenna Solution with Huawei SDR Product One Antenna is needed to support GSM and UMTS simultaneously.

ØCase 2: Sharing Existing GSM900 AntennaCo-antenna with SASU

Co-antenna with 3dB combiner

ØCase 3: Independent Antenna for U900


Case 1: Huawei SDR Product RRU3908

GU900GSM900

UMTS900 Rollout UMTS 900

Switch on

now

swap

GSM900 ModernizationWith SDR Module UMTS900 Switch on

RRU3908

SDR

GSM900 G+U 900

RRU3908 Solution (1 RRU = GSM900 + UMTS900 modes)

BBU3900

Add UMTS Card

GSM900

BBU3900

l Multi mode (GSM/UMTS) supported simultaneously in one module.l The specifications of RRU3908 are fully Compliant with ETSI.


Case 1: Huawei SDR Product MRFU

GU900GSM900


Switch on

now

swap


BTS3900

GSM900 G+U 900

MRFU Solution (1 MRFU = GSM900 + UMTS900 mode)

Add MRFU modules

GSM900

MRFU

MRFU

MRFU

l Software upgrade to UMTS900l Max. 2*80W output power in one MRFU modulel 6 Carriers for GSM only, 4 Carriers for UMTS onlyl For dual mode: UMTS 1C + GSM 1~5C, UMTS 2C + GSM 1~4C

New-add: 3G 900M + 2G 900M

UMTS

UMTS

UMTS

G/U

G/U

G/U

Existing: 3G 2100M


Case 1: Huawei SDR Product MRFU

GU900GSM900


Switch on

now

swap


BTS3900

GSM900 G+U 900

MRFU Solution (1 MRFU = GSM900 or UMTS900 mode)

Add MRFU modules

GSM900

MRFU

MRFU

MRFU

MRFU

MRFU

MRFU

MRFU

MRFU

MRFU

l Software upgrade to UMTS900l Max. 2*80W output power in one MRFU modulel 8 Carriers for GSM only, 8 Carriers for UMTS only

For Some European countries not supporting MSR


Case 1: Antenna solution with Huawei SDR Product

900MHz antenna

No change for antenna and feeder system

GSM900 + UMTS900

BTS3900 DBS3900

GSM900 + UMTS900

MRFU

MRFU

MRFU

MRFU

MRFU

MRFU

1 Separate Antenna Solution

2 Co-feeder, co-antenna Solution

easy

Separate tilt & azimuth tuning for network optimizationHigh cost for adding new antennas & feedersSlow deployment for additional engineering

Opt

imiz

atio

n

Engineering

Fast deployment for easy engineeringLow cost for sharing the legacy devicesHigh difficulty for network optimization

difficult

difficult

easy

Ø Multi mode (GSM/UMTS) supported simultaneously in one module.

ØOnly one antenna is needed to support GSM and UMTS.


Case 2：Sharing Existing GSM900 Antenna

UMTS TXGSM&UMTS RXD

GSM TXGSM&UMTS RXM

3dB 3dB

TX/RXM RXD

GSM900 UMTS900

Co-antenna with SASU and SASA

Co-antenna with3dB combiner

UMTS TXGSM&UMTS

RXD

GSM TXGSM&UMTS

RXM

SASU

TX/RXM TX/RXD

GSM900 UMTS900

SASA


SASU: Same band Antenna Sharing Unit

SASU Characteristic: lSolution for the shared antenna between GSM and UMTS system or between two UMTS systems on the same band. l 6-port unit for antenna & feeder, 1 Tx port for GSM & UMTS respectivelySASU Advantage:l No extra loss in the uplinkl Maximum 0.6dB insertion loss in the downlinkl No impact on frequency planning for GSM & UMTS

Install on the poleInstall on the wall


Ø SASU Characteristicn 6-port unit for antenna & feeder

sharing between GSM900 and UMTS900n 1 Tx port for GSM & UMTS respectively

Huawei SASU for GU900 Co-antenna Solution

Ø SASU Advantagesn No extra loss in the uplink

n Maximum 0.6dB insertion loss in the downlinkn No impact on frequency planning for GSM & UMTS

Install on the wall

Install on the poleSASU(Same band Antenna Sharing Unit)


SASA: Same band Antenna Sharing Adapter

SASA:lCombine the TX carriers on two antennas into the carriers on one antenna, lNo affecting the performance of the existing GSM network. GSM_M

GSM_D

Principles of the SASA


SASU Solution Helps to Retain GSM CoverageBest Co-Antenna Solution for Overlap Mode

U900Node B

G900BTS

combiner

antenna

combiner

Cable attenuatorCable attenuator

Traditional Combiner SASU Solution

antenna

U900Node B

G900BTS

SASU

Disadvantage of Combiner

n 3dB insertion loss (DL/UL)n 30% coverage reducedn Not support RET

New sites needed to retain existing GSM coverage

Advantage of SASU

n negligible loss on ULn < 0.6 dB loss on DLn Support RET function (with 10dB Gain)

Negligible Impacts to GSM

(SASU: Same Antenna Sharing Unit)


Case 3: Independent Antenna for U900

Independent antenna

GSM900 UMTS900

In case of high configuration, 2 independent antennas can be used.


AdditionalCost

Sites renegotiation•New antenna and pole

Slow the pace of site deployment• Longer time to market

Additional equipment cost •New antenna•New pole•New feeder•New TMA

Limitation of evolution• lack of installation space for LTE/SAE evolution

Disadvantage of Independent Antenna U900&G900

Additional installation cost •New antenna•New pole•New feeder

Additional maintenance cost •New antenna


Antenna Solution Summary

3G and 2G system can not adjust the down tilt angle and azimuth

independently;

1) save the space and cost of antennas and feeders;

2) No insertion loss;

3) Easy RF tuning for 2G/3G co-coverage

objectives;

Co-antenna with GU mRRU/mRFU

1) 3G and 2G system can not adjust the down tilt angle and

azimuth independently;

2) downlink increase more than 3 dB loss.

Save the installation space and cost for

antenna and feeder

Co-antenna with 3dB combiner

1) 3G and 2G system can not adjust the down tilt angle and

azimuth independently;

2) downlink increase less than 0.6dB loss.

Save the installation space and cost for

antenna and feederCo-antenna with SASU

much additional cost neededEasy to implement RF optimization respectively.

Independent antenna

DisadvantagesAdvantagesSolution






• Co-Antenna Solution



Refarming Solution case study – S Operator

n Network Information for Refarmingü Scenario :Suburban& Rural

ü G900 and G1800 and U2100 , total 45 Sites

ü Bandwidth : 9.8MHz(76-124) @900M,

23.8MHz (512-525, 647-751)@ 1800MHz

ü UMTS900 Refarming : 1 U900 carrier

n Refarming Solutionü Swap and Refarming with Single RAN3.0 MRRU for

G900/G1800&U900

ü Sandwich allocation, 4.2MHz of total 12.4MHz for UMTS

ü G900:76~89,111~124; U900:90~110

ü Traffic migration :GSM900-> GSM1800M UMTS 4.2MHz

GSMGSM

2.2MHz

89 110


Huawei frequency Refarming

URBAN

Channels: 64-124

Area to refarm : 4.2MhzChannels: 76 - 89 and 111 - 124

Zone de garde: Replan in 10Mhz

Channels: 76 - 124

ü Frequency re-plan area shall be separated

into refarming area, buffer zone & RF

optimization zone;

ü G900 cell BCCH shall has a frequency guard

over 2.6MHz with UMTS channel, available

range is 76～87 and 113～124，TCH of

G900 Co-sited with U900 shall not use the

adjacent frequenies(89,111), while TCH of

separate G900 site can use them.


Buffer Zone Frequency Planning

Sites in buffer zone

Sites in Refarming zone

Sites in RF optimization zone


Inter-RAT Operation Solution in Refarming Area

Adjacent cell relationshipü G900 Adjacent cells: D1800, U900(co-site),U2100 F0(no co-site),

üU900 Adjacent cells:G900,,U2100 F0

üU2100 F0 Adjacent cells: U2100 F1, U2100 F2, U900(GU co-site), G900(no co-site)

Mobile strategyüIn idle state, bidirectional reselection between GSM and UMTS

üIn connection state, handover from UMTS to GSM, but not allowed from GSM to UMTS.


Intra-UMTS Multi- carrier Solution

Adjacent cell relationshipü G900 Adjacent cells: D1800, U900(co-site),U2100 F0(no co-site),

üU900 Adjacent cells:G900, U2100 F0

üU2100 F0 Adjacent cells: U2100 F1, U2100 F2 ( overlapped coverage cell ), U900(GU co-site), G900(no co-site)

Mobile strategyüIn idle state, bidirectional reselection between U900

and U2100, Bidirectional handover based on coverage from UMTS2100 to UMTS900 is recommended

üIn only U2100 F0,F1,or F2 overlapped coverage area, UE camp on UMTS2100 F0 as preference.

ü U2100 F1 and F2 have higher priority for HSPA service than U2100 F0, and such service accessing to F0 will DRD to F1,F2.


Swap and Refarming flow - Refarming


Swap and Refarming flow - Swapping


Swap and Refarming flow - Swapping


Performance Overview- GSM CS

C S T ra ff ic

3000

3500

4000

4500

5000

5500

6000

6500

7000

7500

8000

8500

9000

Mon. Tues. Wed. Thurs. Fri. Sat. Sun.

Erl

Before Refarming(NSN)

After Refarming&BeforeSWAP(NSN)After SWAP(HW)

（

T a u x e c h e c Q o S N o k i a（ 1 - C S S R）

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

5


%


AfterRefarming&Before(NSN)After SWAP(HW)

T a u x d e c o u p u r e r a d i o ( D C R）

0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

1.8

2


%



S D C C H D r o p s

0

0.5

1

1.5

2

2.5

3

3.5


%




Performance Overview- GSM PS

% O ut In te r B SC Ha ndo ver F ail ur es wit h Blo cks

0

2

4

6

8

10

12

14

Mon. Tues. Wed. Thurs. Fri. Sat.

%



% In Inter BSC Handover Failures with Blocks

0

1

2

3

4

5

6


%



% In I nta r BS C Ha nd ove r Fa il ur es wi th B lo ck s

0

2

4

6

8


%



% Ou t I nt ar B S C Ha n do ve r F ai l ur es wi th Bl oc k s

0

2

4

6

8


%





% ED G E R et r a n sm i s s i on U L

0

2

4

6

8

10


%Before Refarming(NSN)


% E D G E R e t r a n s m i s s i o n D L

0

5

10

15

20


%



%T BF FA IL UL

0

5

10

15

20


%



% T BF F A I L D L

0

2

4

6

8

10


%





% M CS5_ 9

80

85

90

95

100


%



06.April 2006

HUAWEI TECHNOLOGIES CO., LTD.

www.huawei.com

Thank You

www.huawei.com

http://www.huawei.com

http://www.huawei.com