wimax e lte duas tecnologias de 4a geração · wcdma r99 cdma1x gprs efficiency gain hsdpa wimax...
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WiMAX e LTEDuas Tecnologias de 4a Geração
Jose AlmeidaMotorolaCCTCI 28 de Maio de 2009
The Future of Telecomm
Pyramid Research
Novo Foco do Mercado
What is 4G?
Yankee group /2006
Main Wireless Broadband Opportunities,according to Operators
Spectrum Efficiency
Spectral Efficiency (bps/Hz/sector): Web Browsing Traffic, Fully-Loaded System
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
WCDMA R99
CDMA1x
GPRS
Efficiency Gain
HSDPA
WiMAX
LTE
2006 2010 2012 2014
WiMAX*
LTE*UMTS / HSPA
GSM
CDMA(2G/3G/UMB)
$ Billions
0
10
20
30
40
50
60
70
80
Two principal mobile broadband platforms for the ne xt decade…
WiMAX & LTE
WiMAX
LTE
2007/8 2011/12
OFDM Air Interface
Light Infrastructure Design
Advanced Antennas and SA Technology
Supported in Many Spectrum Bands
All IP Networking
2008
* Includes fixed-nomadic and mobi le
Source : NAT, Rysavy Research,, CDG-QCOM
5 10 20
Downlink1x1
Downlink2x2
Carrier BW(MHz)
LTE
HSPA
HSPA+
Downlink4x4
1.25
WiMAX
UMB
48
2.25
2412
1.9 3.7 7.0
13.9
7.85 12.7 15.7 31.4
2.26
0.8
1.3 1.45
8.1 6.3512.7
1.13 3.17UplinkNo MIMO/64QAM
Maximum Speeds (sector)
Mbps
WiMAX e LTE tecnologias de 4G
• WiMAX e LTE têmperformance muito similar.Difereças de throughputderivam de:– TDD vsus FDD– Larguras de Banda diferentes– MIMO
• Se ajustado pelo fatoresacima a performance deambas as tecnologias difereem poucos pontos percentuais.
• LTE e WiMAX compartilham omesmo conjunto detecnologias:
• Acesso de Rádio – NovasModulações, Codigos,Correções de Erro, Estratégias– OFDM – Downlink, SCDMA – Uplink– HARQ, TurboCodes, etc
• Arquitetura Full-IP– Sem voz por circuito,– Todos serviços baseados em QoS
Novas tecnologias de Antenas– MIMO– Smart Antennas WiMAX
LTE Requirements vs. WiMAX today
< 100ms
2-3x HSUPA
2-3x HSUPA
50
< 5ms
3-4x HSDPA
3-4x HSDPA
100
LTE
< 20msmsecUser Plane Latency
~2x HSUPAMbpsUL Edge User Throughput
~2x HSUPAbps/Hz/sect.UL Spectral Efficiency
msec
Mbps
bps/Hz/sect.
bps/Hz/sect.
Mbps
Units WiMAXParameter
< 100msControl Plane Latency
16UL Peak Rate
1.5-2x HSDPADL Spectral Efficiency
1.5-2x HSDPADL Edge User Throughput
80DL Peak Rate
WiMAX capacity numbers are best case estimatesWiMAX capacity quoted for 28 symbols DL, 24 symbols UL
Economic Advantage
Relative T
otal Cost o
f Ow
nership
Data Usage per User per Month (GB)
0
2
4
6
8
10
12
14
0.5 1 2 5 10 20
DoRA
HSxPA
LTEWiMAX
Higher population density = lower inflection point
Atlanta~1,500/km2
Relative Total Cost of Ownership Comparison
Sydney~2,100/km2
Dubai~410/km2
Chicago~4,800/km2
4G networks offer significant cost advantage over 3 G technologieswhen sufficient bandwidth demand for data and multi -media exists
Assumptions: * Population density of 1,000 pop/km2,15% subscriber penetration * Per subscriber data usage (1 busy hour, 7 non-busy hours per day) based on 15k subscribers in 100 km^2 * Spectrum usage normalized across technologies; cell edge data rates DL 1 Mbps, UL 256 Kbps * Backhaul costs assume operator uses lowest cost solution (owned wireless) * Note: Data Usage/Sub/Month will vary with the population density of the city for a given subscriber penetration assumption
Wireless Broadband Drivers
Reasonable Use Profiles - 2011
APPSD ays/ Mo
KB /D ay
Hrs /day
K bps K B / Mo
VoIP on Mobile 30 0.2 64 172,800
Outlook (10 emails + 5 with attachments) 30 10500 315,000
Outlook (10 emails + 5 with attachments) 30 10500 315,000
Live Messenger (assuming it replaces SMS ) 30 10.0 3 405,000
MySpace/Facebook, profi le update, v ideo stream up and dow n
10 0.3 128 172,800
General B row sing, Music + News sites , etc… 20 1.0 100 900,000
Home recorded movie on hard drive set top box / Sling / Computer
6 2.0 1000 5,400,000
Youtube, News clip 20 0.5 256 1,152,000
Radio s treaming and home stored music 20 2.0 128 2,304,000
11.1Gbytes / Month
APPSD ays/ Mo
KB /D ay
Hrs /day
K bps K B / Mo
VoIP on Mobile 30 0.1 64 86,400
Outlook (20 emails + 5 with attachments) 4 11000 44,000
Outlook (20 emails + 5 with attachments) 30 11000 330,000
Live Messenger (assuming it replaces SMS ) 30 10.0 3 405,000
MySpace/Facebook, profi le update, v ideo stream up and dow n
5 0.5 128 144,000
General B row sing, Music + News sites , etc… 10 0.5 100 225,000
Home recorded movie on hard drive set top box / Sling / Computer
4 2.0 1000 3,600,000
Youtube, News clip 10 0.3 256 345,600
Radio s treaming and home stored music 15 1.0 128 864,000
6.0Gbytes / Month
APPSD ays/ Mo
KB /D ay
Hrs /day
K bps K B / Mo
VoIP on Mobile 30 0.5 64 432,000
Outlook (5 emails + 3 with attachments) 20 6250 125,000
General B row sing, Price check + N ew s s ites , etc…
20 1.0 100 900,000
Youtube, News clip 20 0.5 256 1,152,000
Radio s treaming and home stored music 4 0.5 128 115,200
2.7Gbytes / Month
TypicalMobile only
College StudentLaptop + Mobile
Urban ProfessionalLaptop + Mobile
Source: ComScore Inc
APPSD ays
/ Mo
KB /
D ay
Hrs
/dayK bps K B / Mo
VoIP/Conference on Mobile 20 1 64 576,000
VoIP on Mobile 30 0.1 65 87,750
Netmeeting w hen O ut of O ffice 4 0.5 500 450,000
Outlook (100 emails + 25 with attachments) 4 55000 220,000
Outlook (100 emails + 25 with attachments but only 5 attachments download)
30 16000 480,000
Communicator 4 8 3 43,200
Linked- In, profile update, video s tream up and dow n
2 1 128 115,200
Competitor sites, N ew s s ites , etc… ( Bur sty tr affic ) 4 1 100 180,000
Home recorded movie on hard drive set top box / Sling / Computer
2 2 1000 1,800,000
Youtube, News clip 10 0.5 256 576,000
Radio s treaming and home stored music 10 1 128 576,000
5.1Gbytes / Month
Road WarriorLaptop + Mobile
5.1GB/month 6GB/month
11.1GB/month 2.7GB/month
Wireless Internet use follows WiredInternetby 3-5 years
75% of users watch online video*YouTube = 27% of internet traffic
Short clips - Perfect for mobile use15min of daily YT = 1.2GB/month
Economic Advantage
($200)
($150)
($100)
($50)
$0
$50
$100
$150
$0 $40 $80$20 $60
WiMAX
DOrAHSPA
LTE & 16m
Typical Mobile Network DimensioningEdge of Cell : 256kbps DL, 20kbps UL
NP
V (
Mill
ions
)4G provides economically favorable meansto deliver true, mobile broadband servicesAt price points meaningful for mass market adoption
Chicago
Price tooLow
Price tooHigh
90%90%100%Coverage
91521 InDoor Loss dB
99787518Subs x1000
57005000100POPs x1000
4625101510Area km2
SuburbanUrbanDense Urban
90%90%100%Coverage
91521 InDoor Loss dB
99787518Subs x1000
57005000100POPs x1000
4625101510Area km2
SuburbanUrbanDense Urban
Same traffic and price sensitivity curves for all modelsSpectrum exhaustion leads to cell splitting
O Que Orienta a Escolha?
Para LTE
• Manutenção do modelo de negócio de telefonia móvel
• Acesso ao Espectro
Para WiMAX
• Time-to-Market– Atendimento a demanda por banda larga existente já
• Foco em Banda Larga – Mobilidade é um bonus
Uso do Espectro
FDD
FDD
FDD
FDD
FDD
FDD
FDD
FDD
FDD
TDD
TDD
TDD
TDD
2500 MHz
2100 MHz
1900 MHz
1800 MHz
1700 MHz
1500 MHz
900 MHz
850 MHz
800 MHz
LTE650 MHz
3700 MHz
3500 MHz
2500 MHz
2300 MHzWiMAX
590 MHz
LTE spectrum focused on traditionalcellular bands
Appeal for many cellular operators
May require re-mining spectrum to allow build out
WiMAX spectrum is new, underutilized,and less costly
Offers access to new wireless players…
& existing operators looking for time to market
� Both require significant spectrum
� Both can be FDD or TDD
Spectrum Availability for WiMAX and LTE
3GPP New Spectrum2.5 GHz - Potential for up to 20MHzper operator
Digital Dividend- WRC-07 madepositive steps towards makingspectrum available for future LTEdeployments. .
LTE 3GPP Spectrum View
925 - 960880 - 915GSM 900
869 - 894824 - 849Cellular 850
2110 - 21701920 - 1980UMTS Core
2110 - 21551710 - 1755AWS
2620 - 26902500 - 2570IMT Extension
776 - 793746 - 763700 MHz
1930 - 1990
1805 - 1880
Downlink(MHz)
470 - 854
1850 - 1910
1710 - 1785
Uplink(MHz)
Digital Dividend
PCS 1900
GSM 1800
CarrierBancwidth
(MHz) Band
1.25 5 10 15 20
1.25 5 10 15 20
1.25 5 10 15 20
1.25 5 10 15 20
1.25 5 10 15 20
1.25 5 10 15 20
1.25 5 10 15 20
1.25 5 10 15 20
1.25 5 10 15 20
2.6 GHz SpectrumAuctions
2009 2010 20112H
2007 2008
UK
SwedenNorway
Austria
Germany
Hong Kong
Completed
Planned
Future
France
Italy
Netherlands
Portugal
Spain
Belgium
Finland
Paired Spectrum(FDD) 2 x 70 MHz
UnpairedSpectrum
(TDD) 50 MHz
2500MHz
2570MHz
2620MHz
2690MHz
2.6 GHz ITU Plan
Not the only option…
JapanCompleted 2007
2575MHz
2625MHz
2545MHz
UnpairedSpectrum
(TDD) 30 MHz
2595MHz
UnpairedSpectrum
(TDD) 30 MHz
UnpairedSpectrum
(TDD) 10 MHz
2500MHz
26902690MHzMHz
KDDI/Intel Consortium Wilcom
IncumbentOperators purchaseTDD spectrum for
WiMAX
United StatesCompleted 2004
2614MHz
Unpaired Spectrum(TDD) 12 MHz
2500MHz
Sprint/Nextel andClearwire acquireunpaired BRSspectrum forWiMAX
2690MHz
2624MHz
2602MHz
2673.5MHz
Unpaired Spectrum(TDD) (3) 16.5 MHz Blocks
Total= 49.5 MHz
Taiwan 2.6 GHz AuctionCompleted July 2007
25002500MHzMHz
26252625MHzMHz
26902690MHzMHz
26602660MHzMHz
25652565MHzMHz
25952595MHzMHz
First InternationalTelecom
Global On Tecom-VIBO
Far EasToneTelecommunications
(Incumbent) Tatung Vastar Cable
• New Entrantspurchase unpairedspectrum for WiMAX
• One Incumbentunpaired pairedspectrum for WiMAX
Unpaired SpectrumUnpaired Spectrum(TDD) 30 MHz per(TDD) 30 MHz per
OperatorOperator
Paired Spectrum(FDD) 2 x 40 MHz
New ZealandCompleted 2007
2500MHz
2575MHz
2620MHz
2690MHz
2520MHz
2540MHz
2640MHz
2660MHz
Craig Wireless
Craig Wireless
TelecomNZ
TelecomNZ
VodafoneNZ Blue Reach
UnpairedSpectrum
(TDD) 35 MHz
UnpairedSpectrum
(TDD) 30 MHz
• Incumbents and newentrants purchasepaired spectrum
• Incumbent and newentrants purchaseunpaired spectrum
Scenario Analysis
Frequency Reuse
-1000 0 1000 2000 3000 4000 5000 6000-1000
0
1000
2000
3000
4000
5000
6000
x-d im ension (m ete r)
y-d
imen
sio
n (m
ete
r)
0 1000 2000 3000 4000 5000 6000 7000 8000 90000
1000
2000
3000
4000
5000
6000
7000
8000
9000
x-dime nsion (mete r)
y-d
ime
nsi
on
(me
ter)
1x3x3
1x4x2
-10 00 0 10 00 2 00 0 30 00 4 00 0 50 00 6 00 0-1 00 0
0
1 00 0
2 00 0
3 00 0
4 00 0
5 00 0
6 00 0
x-dime ns ion (me ter)
y-d
ime
nsio
n (
me
ter)
1x3x1
LTE
WiMAX
Paired Spectrum(FDD) 2 x 70 MHz
UnpairedSpectrum
(TDD) 50 MHz
A
2500MHz
2570MHz
2620MHz
2690MHz
4 Operator Scenario
B C D A B C D
4.66MHz (?)1455.8MHz(5MHz)
17.5MHz47.7MHz(5MHz)
23.33
Spectrum perCarrier
(LTE profile)
Spectrum perOperator
Number ofOperators
Source : NAT, Rysavy Research,, CDG-QCOM
5 10 20
Downlink1x1
Downlink2x2
Carrier BW(MHz)
LTE
HSPA
HSPA+
Downlink4x4
1.25
WiMAX
UMB
48
2.25
2412
1.9 3.7 7.0
13.9
7.85 12.7 15.7 31.4
2.26
0.8
1.3 1.45
8.1 6.3512.7
1.13 3.17UplinkNo MIMO/64QAM
Throughput per sector
Mbps
Máximo LTE
Brasil
Máximo WiMAX
BrasilMáximo WiMAX
BrasilMáximo WiMAX
Máximo WiMAX
Considerações sobre LTE• Primeiros sistemas aparecerão nos EUA– Verizon 2011 - 700MHz– AT&T - 700MHz / 1900MHz– Forte pressão por re-uso de bandas existentes
• Europa sinaliza sistemas LTE a partir de 2013 – Crise econômica é umdos culpados (Barcelona 2009)
• Brasil – Possiveis implementações em 2013 / 2015
• Implementação de LTE será bastante disruptiva para operadoras– Nova Tecnologia de Rádio – Novas BTSs– Nova Tecnologia de Core – Todo IP– Dispositivos móveis complexos – GSM / HSPA / LTE
– Complex mobile devices – GSM / HSPA / LTE– A Maior frequencia usada numa implementação móvel
Em Resumo
LTE• Sistemas comerciais em:
• 1 a 3 anos no mundo (EUA inicialmente)• 3 a 6 anos no Brasil – Capacidade de Investimento das operadoras
• Deverá estar disponível em várias bandas• Reuso de espectro• Novas Bandas
•Manutenção do modelo de negócios existente
WiMAX• Foco em Banda Larga Fixa / Nomádica• Atendimento da Demanda reprimida existente no mercadojá.
Conclusões
A discussão de uso de 2.5GHz é menos técnica /regulatória que de política de comunicações
• Quando o investimento será feito?• Quando será provido serviço à população ?• Qual será o modelo de negócios?• Quem serão os atores?
Obrigado