OI’s CASE STUDY

Alberto Boaventura

Diretoria de Tecnologia e Plataformas +55 21 8875 4998

LTE Latin America 2012

17-18 April 2012 Windsor Barra Hotel,

Rio de Janeiro, Brasil

Diretoria de Tecnologia e Plataformas

Presentation Duration:

6 h and 30 min!!!

Diretoria de Tecnologia e Plataformas

What is LTE?

3GPP LTE (Long Term Evolution) is a standard for wireless high-speed data to mobile phones and data terminals. It is based on the GSM / EDGE and UMTS / HSPA, totally over IP, with the

increased capacity and throughput using new modulation techniques, smart antenna systems and self-organizing network.

ITU-R M.2034

Spectral Efficiency

DL 15 bits/Hz

UL 6.75 bits/Hz

Latency

User Plane < 10 ms

Control Plane < 100 ms

Bandwidth

ITU-R M.2034 40 MHz

ITU-R M.1645 100 MHz

ADVANCED

IEEE 802.11ac (<6 GHz)

IEEE 802.11ad (>60 GHz)

IEEE 802.16m

Diretoria de Tecnologia e Plataformas

OFDM Flexibility

Flat Architecture

MIMO

Self Organized Network

Evolution

What is LTE?

Diretoria de Tecnologia e Plataformas

OFDM and Flat Architecture

DMS Codif. IFFT Ik/Qk Ik/Qk

Subbands

f t Duração do

Símbolo

DA

S5

Architecture, protocols, interfaces completely based on IP

There is no longer the controlling element of the access network (BSC / RNC), with mobility management functions performed by the ENB.

There is no longer the domain CS (Circuit Switched) services and legacy will be emulated by IMS (SMS and Voice)

Seamless integration with non-3GPP access (eg Wi-Fi/WLAN)

General simplification in RMM state machine

E-UTRAN Evolved Packet Core

SAE (System Architecture Evolution)

X2 S11

PCRF

HLR/HSS

OCS/ OFCS

Internet

S5 S-GW P-GW

MME

IMS

S1-AP

Gx

Rx S6a

SGi

Gy/Gz

Sy

Ro/Rf

Sh

Sp

New air interface based on OFDM (UL SC-OFDMA & DL OFDMA)

OFDMA is quite similar with respect to FDMA frequencies the division for information transfer;

It uses the encoding process modulated in sub -bands with orthogonal carriers;

General air interface control plane simplification for latency reduction

OFDM (Orthogonal Frequency Division Multiplex)

Diretoria de Tecnologia e Plataformas

MIMO & SON

Diversity: Same signal Multiplexing: Different signals Beamforming

SNR

BER

min(NTx , NRx) Antenna

Cap

acit

y

SIN

R

Time

Self-Planning & Dynamic Re-planning

Plug and Play

Automatic Configuration and setup

Self Adjustment

Real time network adjustments

Self Repair

Automatic and quick failure mitigation

Self-Configuration Self-Optimization Self-healing

Automatic Inventory Automatic Neighbor Relations

X2

Smallcells

Control for effective interference between cells (inter-cell inerference)

Heterogeneous Network

MIMO (Multiple Input, Multiple Output)

Self Organized Newtork

Essential tool to increase coverage and capacity

Two modes:

Coordinated scheduling & Beamforming

Joint processing/transmission

MIMO + SON = Coordenation Multi-Point (CoMP)

Diretoria de Tecnologia e Plataformas

Flexibility & Evolution

Cobertura: < 1 GHz

Cobertura ou Capacidade: > 1 GHz & <2 GHz

Capacidade: >2 GHz

Combined used for LTE Advanced

20 MHz 15 MHz 10 MHz

5 MHz 3 MHz

1,4 MHz Different supported bandwidth TDD & FDD

UL DL

Freqüência

FDD

DL UL

Tempo

TDD

Several supported bands

43 bands are defined in Rel. 10

Rational Band Usage: Bands in World:

Band 3GPP (LTE) Status 700 MHz Bands 12, 13 & 14 USA, Colômbia & Peru 800 MHz Band 20 (DD) Europe DD, Germany, UK, Sueden

850 MHz Band 5 Korea

1800 MHz Band 2 Europe

AWS Band 4 USA 2100 MHz Band 1 Japan 2300 MHz Band 40 Asia 2600 MHz Band 7 Europe

3GPP Releases and world introduction expectation

DL:474 kbps UL:474 kbps

EDGE (Rel 7)

DL:1,89 Mbps UL: 947 kbps

E-EDGE (Rel 8)

DL: 300 Mbps UL: 45 Mbps BW: 20 MHz

LTE (Rel 8)

DL: 28 Mbps UL: 11,5 Mbps

BW: 5 MHz

HSPA+ (Rel 7) DL: 42 Mbps

UL: 11,5 Mbps BW: 5 MHz

HSPA+ (Rel 8) DL: 84 Mbps UL: 23 Mbps BW: 10 MHz

HSPA+ (Rel 9) DL: 168 Mbps UL: 23 Mbps

BW: 20/10 MHz

HSPA+ (Rel 10)

2010- 2010 2011 2012 2013

DL: 1.2 Gbps UL: 568 Mbps BW: 40 MHz

LTE (Rel 10) Network resources

optmization

LTE (Rel 9)

2013+

DL:> 1.2 Gbps BW: 100 MHz

LTE (Rel 11)

2007 2008 2009 2010 2011 2012

Release 8

Release 9

Release 10

Release 11

IMT Advanced

Diretoria de Tecnologia e Plataformas

What does LTE stand for?

Mobile Broadband TCO Reduction New Services

M2M Brazilian Policies LTE Trial

Diretoria de Tecnologia e Plataformas

Mobile Broadband

Fixe

d &

Mo

bile

Acc

ess

es

(M

illio

ns)

Fixe

d &

Mo

bile

Bro

adb

and

(M

illio

ns)

0,0%

20,0%

40,0%

60,0%

80,0%

Local LD

18 a 24

25 a 34

35 a 44

45 a 54

55 a 64

65 ~ 0

100

200

0

500

1000

20

00

20

01

20

02

20

03

20

04

20

05

20

06

20

07

20

08

20

09

20

10

20

11

20

12

20

13

20

14

20

15

Fixed telephone linesMobile cellular subscriptionsFixed broadband subscriptionsMobile broadband subscriptions

Substitution or Convergence?

Source: Femtoforum

Mobile devices are preferred in the younger

generations for the establishment of

telecommunications services.

In Latin America, it is expected that the number

of mobile broadband access to overcome the

fixed in 2012.

Source: ITU/ICT/MIS Growth in Mobile Broadband

Source: Cisco VNI 2010

Video is now 40% of Internet traffic, and will

reach 61% by 2015 .

6.3 exabytes per month across the mobile network by 2015, 4.2 exabytes will

be due to video.

At the same time, it is expected that the average

grows exponentially. In Brazil, the growth is 82%

year-on-year by 2015 according to Cisco

0 Mbps

1 Mbps

2 Mbps

3 Mbps

4 Mbps

5 Mbps

6 Mbps

2009 2010 2011 2012 2013 2014 2015

América Latina

America do Norte

Europa Ocidental

Brazil

Source: Cisco VNI 2010

McKinsey estimates that “a 10% increase in broadband’s household penetration delivers a boost to a country’s GDP that ranges from 0.1% to 1.4%.

Booz estimates that broadband penetration of 10% higher a year is related to the 1.5% growth in labor productivity over the next five years.

Broadband, people's welfare and progress

When a person is connected, his life changes!

384

130 67 39

238

29%

23%

14% 13%

4%

0,00%

10,00%

20,00%

30,00%

40,00%

0 MM

100 MM

200 MM

300 MM

400 MM

500 MM

China India Brasil Russia USA

1.8 B & Internet Users Growth +13% year-on-year

18.8T Minutes & Growth +21% year-on-year

The Internet and broadband continue to grow

Users

Growth

Diretoria de Tecnologia e Plataformas

New Services & M2M Mainframe-> Mini-> Desktop -> Smartphones/Tablets

5 trends for convergence: MBB + Social Networking + Video + VoIP + usability in

different devices

1960 1970 1980 1990 2020+

Mainframe Mini

Desktop

Internet

Internet Móvel

1 MM+ 10 MM+ 100 MM+

1 B+

10 B+

The significant growth forecast for the mobile Internet is justified by the integration of

features (for personal use) in a single device, making it in some years, the primary device

from the desktop.

It is estimated that the demand for Tablet can surpass 100 million shipments by 2012

Smartphones and tablets, in particular, catalyze the demand for the business market,

allowing a marriage to the world of IT through Cloud Computing

2010 2015 2020

1st Phase: Vertical Applications 2nd Phase: Regulation 3rd Phase: Internet of Things

Applications:

POS

Fleet Management

Tracking

Mobile Payment

Monitoring Cameras

Energy Meters

Toll Payment

eCall

Remote Maintenance

Media Synchronization

Health Monitoring

Applications:

POS

Fleet Management

Tracking

Mobile Payment

Monitoring Cameras

Energy Meters

Toll Payment

Applications:

POS

Fleet Management

Tracking

Mobile Payment

50 billion connected

devices by 2020

Machine to Machine

Telecom + Transportation + Utilities + Health +

Government = Smart Cities

Diretoria de Tecnologia e Plataformas

TCO Reduction

Domínio de Voz Domínio de Dados

Tráfego (Custo)

Receita

Service Throughput & Volume

Price € Cost/ Mbyte

Price/ MByte

Releative Price

SMS 160 Bytes €0.15/ mensagem

€ X € 1.000 400.000

Voz 10 kbps 0.05 a € 0.5 o minuto

€ Y € 0.7 - € 7 300 - 3000

Dados (3 GBytes)

3 GBytes €20 / mês € Y/5 € 0.007 3

Mobile TV Unicast (50 hrs)

50 horas @ 100 kbps

€5 / mês € Y/5 € 0.0023 1

Dilemma of Broadband: Decoupling Revenue and Traffic

The relative price per Mbyte when compared to broadband is:

400,000 times greater for SMS and

300-3000 times greater for the voice

service.

$$$

$$$

$$$

$$$

$$$

$$$

$$$

3G (1) 3G (2) 3G (3) 3G (4)

3a. Portadora

2a. Portadora

NodeB

LTE (X)

Cost per Base Station: LTE vs 3G

0,0000

1,0000

2,0000

3,0000

0 500 1000

1800 MHz (10) 2600 MHz (20)

HSPA+ HSPA+ (DC)

0,0000

0,0500

0,1000

0,1500

0,2000

0 20 40 60

1800 MHz (10) 2600 MHz (20)

HSPA+ HSPA+ (DC)

Base Station Density (eNB/km2 ) vs User Density (users/km2)

Low density High density

Source: Planejamento/2011 Source: GTEC/2011

Source: Agilent (LTE World Summit 2010)

CapEx

Self Organized Network

OpEx

Self-Planning & Dynamic Re-planning

Self-Configuration

Self-Optimization

Self-healing

Based on "Heavy Reading: 4G/LTE Insider 2010"

The estimated savings in OpEx is 40%

Diretoria de Tecnologia e Plataformas

PNBL

Source: IPEA 2009/ITU ICT/MIS 2010/Cisco VNI 2010

PPP

0%

10%

20%

30%

$0,00 $50,00 $100,00

México

Brasil

Argentina

Venezuela

Colômbia

Peru

Chile

USA

Ho

me

pen

etra

tio

n

Fixed Broadband: Penetration vs Price

Accesses/Home Per Capita Income

North 13,5% R$ 449,00

Northeast 4,0% R$ 381,00

Center-West 20,0% R$ 760,00

Southest 23,8% R$ 748,00

South 21,3% R$ 759,00

Fixed Broadband: Penetration and Income regional distribuition

Source: PNBL 2009

Broadband access definition: an access with traffic flow such as to allow consumers, individual or corporate, fixed or mobile, to enjoy, with quality, a bundle of services and applications based on voice, data and video.

Private Fixed Access Equipment (Urban and Rural):

30 million fixed broadband access (urban and rural), adding to the access in homes, companies and

cooperatives.

Private Fixed Access Equipment (Urban and Rural):

2014

Bringing broadband access to 100% of the organs of government,

including: administration, rural public schools (70k), health facilities

(177k), public libraries (>10k), law enforcement agencies (>14k).

Public Fixed Access Equipment (Urban and Rural):

60 million mobile broadband access: terminals voice / data

(with active data service) and data modems only.

Mobile Broadband Access:

Offer Policy

New edition PGMU III and Review of Concession Agreements General Plan Competition – PGMC New frequency bands (450, 2600, 3500 MHz) Regulating resale of services Regulation of infra/net sharing Regulation of Significant Market Power – PMS Additional regulation for the SCM Revision of Regulations for Compensation Network Deploying converged license Definition of traffic exchange points – PTT Reduce the cost of SCM license for small providers Granting of new concessions to TV via cable

Restraint of tying Computers for All Program Tax exemption by the Union and Federation States FISTEL differentiated regime for small providers of SCM

Demand Policy Quality Policy

Regulation of Quality of Services Regulation of Network Neutrality

Diretoria de Tecnologia e Plataformas

P W X T U P W X V1 V2 V1 V2

Auction for 450 MHz & 2500 MHz 2

50

0

25

70

26

20

26

90

Wide country license (15+15 years) Mobile operators only (SMP)

Per local area (15 +15 years) Multimedia and mobile operators (SMP & SCM)

45

0

45

8

46

0

46

8

1 subband FDD 7+7 MHz

45

1

46

1

SLP

e

SLE

SAR

C

SMP, STFC e SCM

S

LMP

SAR

C

SMP, STFC e SCM

SLP SLP

2600 MHz

450 MHz

Type A (Lot1)

450 MHz

Type C (Lot 6 - 9)

2600 MHz

Winner?

Type B (Lot 2 - 5)

450 e 2600 MHz

Yes

No

Lot 1 – Highest discount offered on plan and wholesale for individual accesses and Payphone.

Lot 2 till 76 – Highest price offered at final bid presentation.

Auction Dynamics

Coverage Obligations

450 MHz 2600 MHz

20

12

Service for access to broadband Internet, free of charge in all public schools located in rural area of service provision;

Availability of towers and other infrastructure implementation support, transport to the fulfillment of commitments covered by the winning bidder of Lot 1 (450 MHz separately) up to the shared costs

20

13

2

01

4

20

15

2

01

7

Municipalities between 30 k and 100k inhabitants, there will be at least one provider at 2.5 GHz; Service offerings in technological conditions equivalent to 3G. 30% Municipalities below 30k, with superior technology than 3G. (Dec/2017)

Download throughput of 1 Mbps, upload 256 kbps, and a minimum monthly 500 MB Overage-Free. Can be met using another radio frequency. As the schedule PGMU. (Dec/2017)

Host Cities of das Confederations Cup (Apr/2013) Host and Additional Cities for FIFA World Cup 2014 (Dec/2013)

30% of municipalities. (Dec/2013)

60% of municipalities (Dec/2014) Capitals, municipalities with more than 500k inhabitants and also the Federal District (Dec/2014)

100% of municipalities (Dec/2015)

Municipalities with more than 200k inhabitants (Dec/2015)

20

16

Municipalities with more than 100k inhabitants (Dec/2016)

20

18

60% Municipalities below 30k, with superior technology than 3G. (Dec/2018)

20

19

100% Municipalities below 30k, with superior technology than 3G. (Dec/2019)

Diretoria de Tecnologia e Plataformas

LTE Trial

Program for testing systemic compliance and performance to:

Technology Internalization Technology, architecture, end-to-end service evaluation Anticipation and assessment of potential problems in future implementation Evaluation of suppliers

Goals

Phase 0 Phase 1 Phase 2

Standard compliance tests

Systemic tests

Special feature tests Outdoor performance tests

Trial Participants:

Altogether there were nine companies involved with more than 100 professionals, to perform planning,

installation, configuration and execution over 50 tests in access, core and IMS network.

Cabo Frio (ALU)

Itaguaí (NSN)

Araruama (Huawei)

Macaé (ZTE)

Teresópolis (Ericsson)

Access Network Transport Network Core Network IMS & PCRF

Scope of Trial:

Complete 2G/3G/4G Mobile Network

Overview:

Diretoria de Tecnologia e Plataformas

Trial Topology

Logical Topology

Metro Ethernet

MSS HLR/HSS MGW

PCRF SGSNMME

GGSN S-GW P-GW

IMS

IP Radio

PTN

PTN JDSU’s Probe

Outdoor Indoor (Oi-Lab)

Switch LAN

eNB

eNB

GERAN UTRAN

eUTRAN

S1-U

Gn/S11

PCRF

HLR/HSS

Internet

Gi/SGi

GGSN S-GW P-GW

SGSNMME IMS

S1-AP

Sp Sh

SGs/Sv

Gm

Mc C

Rx

MSS MGW PSTN/

PLMN

S1-U

S1-AP

X2

X2

Gx

C A/IuCS

Gb/IuPS

Oi-Lab and Indoor

environment

Outdoor environment

GERAN UTRAN

eNB

eNB

eNB

Physical Topology

Diretoria de Tecnologia e Plataformas

Phase 0: Tests in Detail

Latecy Attach latency Idle to Active latency User plane latency, ping

32/1000/1500Bytes, pre-scheduled

User plane latency, ping 32/1000/1500Bytes, non-pre-scheduled

Single User Throughput Single user peak throughput,

Downlink UDP Single user peak throughput,

Downlink TCP Single user peak throughput,

Uplink UDP Single user peak throughput,

Uplink TCP

MIMO Scheme Testing Downlink TCP Throughput at

Cell Edge with 2*2MIMO Transmit Diversity Configuration

Downlink TCP Throughput at Cell Edge with 2*2MIMO Adaptive Configuration

Cell Capacity Downlink TCP/UDP cell peak

capacity with PDCCH symbol adaptive of 6 UEs

Uplink TCP/UDP cell peak capacity of 6 UEs

Downlink TCP/UDP cell peak capacity, 1 GBR with 5 NGBR with PDCCH adaptive

Uplink TCP/UDP cell peak capacity, 1 GBR with 5 NGBR Security Management

Authentication Subscriber data and signaling

confidentiality NAS encryption and integrity

protection, EIA1 and EEA1 algorithm supported

NAS encryption and integrity protection, EIA2 and EEA2 algorithm supported

NAS encryption, NULL algorithm supported

SON Automatic Neighboring Relation

Policy Charging Control Bandwidth control according

subscriber category Policy Charging Control based on

services Bandwidth control according

P2P service by predefined PCC rule

Bandwidth control according FTP service by predefined PCC rule

Bandwidth control according busy time

Policy Charging Control based on quota usage status Bandwidth control according

quota usage status on session level

Bandwidth control according quota usage status on service level

EPC Pooling S1-Flex based on the MME load S1-Flex redundancy under the

outage of MME with failover scenario

PDN GW and Serving GW Selection based on the Integrated Strategy

PDN GW and Serving GW Selection based on the Priority

PDN GW and Serving GW Selection based on the Weight

PDN GW and Serving GW Selection based on the Topologically Closest

IPV6 IPV6 address allocation by

PDNGW Static IPv6 Address subscribed in

the HSS Dynamic IPv4IPv6 Address

subscribed in the HSS

LTE Mobility with Legacy Networks UL IRAT • Redirection without

measurements from LTE to UMTS

• Reselection from LTE to UMTS from LTE to UMTS

GL IRAT • LTE to GERAN cell reselection

for a PS attached UE in idle mode

• LTE to GSM redirection without measurement

VoIP by IMS Attach & Register

Attach to EPC and register to IMS

De-Registration initiated by subscriber

De-Registration initiated by HSS

Authorization Registration Authentication

- SIP Digest Session Authentication - SIP

Digest Voice call

Voice call Failure call - callee busy Failure call - callee not

registered Failure call - callee no

answer

Diretoria de Tecnologia e Plataformas

Phase 0: A Sample Results

0 ms

200 ms

400 ms

600 ms

Vendor 1 Vendor 2 Vendor 3 Vendor 4 Vendor 5

Attach latency Idle to Active latency

0,0 ms

10,0 ms

20,0 ms

30,0 ms

Vendor 1 Vendor 2 Vendor 3 Vendor 4 Vendor 5

Ping 32 Ping 1000 Ping 1432

Latency

Single User Throughput

85,0 Mbps

90,0 Mbps

95,0 Mbps

100,0 Mbps

105,0 Mbps

Vendor 1 Vendor 2 Vendor 3 Vendor 4 Vendor 5UDP TCP

0,0 Mbps

20,0 Mbps

40,0 Mbps

60,0 Mbps

Vendor 1 Vendor 2 Vendor 3 Vendor 4 Vendor 5

UDP TCP

Cell Capacity (Per user throughput @ 6 UEs)

0,0 Mbps

10,0 Mbps

20,0 Mbps

30,0 Mbps

Vendor 1 Vendor 2 Vendor 3 Vendor 4 Vendor 5

UDP TCP

0,0 Mbps

5,0 Mbps

10,0 Mbps

Vendor 1 Vendor 2 Vendor 3 Vendor 4 Vendor 5

UDP TCP

Downlink Uplink

Downlink Uplink

Control Plane User Plane

Diretoria de Tecnologia e Plataformas

Both modes (A & B) Bandwidth 10 and 20 MHz Throughput test for DL and UL FTP session over UDP and TCP Collected information: Lat/Long,

Throughput, SINR, RSRP, CQI, RI, PMI, MCS. Coverage plot

Phase 2: Tests in Detail

Two test modes

(B) User Mobility (A) User Static

SINR < 6 dB 6 dB < SINR < 13 dB, SINR > 13 dB

Drive Test, considering user mobility route around the base station with a speed of 30-50 km/h.

Test 1: Throughput

Mode A Only Multiple Users Capacity: DL and UL load

distribution 4:0:0 of 50%, 100% in the neighboring cells

Average Cell Capacity: DL and UL for load distribution 1:2:1 of 50%, 100% in the neighboring cells

Test 2: Cell Capacity

Both modes (A & B) Attach Idle to Active User Plane – ping 32/1000/1500 Bytes pre-

schedule User Plane – ping 32/1000/1500 Bytes non

pre-schedule

Test 3: Latency

Mode A Only For UL/DL in two adjacent cells. ICIC: With UE1 UE2 in the middle and the

edge of two cells. Tests with and without ICIC - measuring rate, RSRQ, SINR

(Uplink Interference Rejection: A site with 1:0:1 distribution, and another with 0:0:2 distribution. Evaluate & MRC IRC

Test 4: Interference Management

Mode B Only Accessibility Test: Attach, start FTP session

with duration of 60s, detach, wait 12 seconds and repeat. KPI to measure success rate;

Retainability. Establish a session, and move between the cells several times for investigating interfaces X2 and S1. Measuring KPI maintenance session

Test 5: Mobility Management

Mode A Only Intra freq ANR for the green field Intra-Freq MLB mobility load balancing

Test 6: Self Organized Network

Diretoria de Tecnologia e Plataformas

Phase 2: Border and Spectral Efficiency Test Results

0,0 bps/Hz

2,0 bps/Hz

4,0 bps/Hz

6,0 bps/Hz

8,0 bps/Hz

-10,0 dB -5,0 dB 0,0 dB 5,0 dB 10,0 dB 15,0 dB 20,0 dB 25,0 dB

Shannon

3GPP

Vendor A

Vendor B

Vendor D

Vendor E

0,0 bps/Hz

3,0 bps/Hz

6,0 bps/Hz

9,0 bps/Hz

12,0 bps/Hz

15,0 bps/Hz

0,25 km 0,50 km 0,75 km 1,00 km

Shannon

3GPP

Vendor A

Vendor B

Vendor C

Vendor D

Vendor E

Spectral Efficiency vs SINR

Spectral Efficiency vs Distance

SINR vs RSRP

4 to 5 bps/Hz

3.25 to 4 bps/Hz

2.5 to 3.25 bps/Hz

1.75 to 2.5 bps/Hz

1 to 1.75 bps/Hz

0.5 to 1 bps/Hz

0.25 to 0.5 bps/Hz

0 to 0.25 bps/Hz

Coverage Plot

Note: It was used Okumura-Hata for Shannon and 3GPP estimation

-10

0

10

20

30

-130,0 dBm -110,0 dBm -90,0 dBm -70,0 dBm

Vendor A

Vendor B

Vendor C

Vendor D

Vendor E

Diretoria de Tecnologia e Plataformas

The main application (or killer app) is customer experience. And it is improved by using a service with superior quality.

Boot-time is one of the most important attribute for Tablets compared

to Notebooks. Today, the users are looking for anytime and anywhere

services with readiness and instantaneously. Even in simple web page

navigation, quick access is imperative.

Wi-Fi popularity pushes a customer expectation for more throughput in

macro outdoor coverage.

Social networks require greater capacity for data transfer in the uplink

in order to post pictures, videos, update contacts etc.

According to GSA, there are today over 3,362 HSPA+ devices launched

by 272 suppliers. However, there are only 245 HSPA+ devices that can

support 42 Mbps, and a few that can support 84 Mbps.

Final Words

¡Gracias!

Thanks!

Obrigado!

Alberto Boaventura

alberto@oi.net.br