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Taiwan LTE Development and Perspective

Yi-Bing LinChair Professor and Dean

College of Computer ScienceNational Chiao Tung University

liny@csie.nctu.edu.tw

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Taiwan as an example for Broadband Island

Mobile Internet subscribers1.66 million

Broadband subscribers * () 7.86 million

Internet bandwidth for global connection 330Gbps

Household online() 78.7%

Business online94.3%

Government agency Online 100%

Internet Hosts15.58 million

School online100%

Source: NCC,III-FIND, ITRI & Household Registration, Ministry of Interior, Dec. 2009

* : Broadband subscribers including xDSL, Cable , WLAN and 3G

Area: 36,191 sq kmHouseholds: 7.8 millionPopulation: 23.1 million

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Fascinating Smart Devices

HTC Desire iPhone 4

iPad

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Mobile Broadband EraTotal shipments of smartphone will reach 1.3bn units per year in 2014 (GSMA 2010)By 2015, there will be 3.5 billion mobile broadband users around the world (Ericsson, GSMA 2010)

Expected smart device will become users first device to access Internet, instead of PC/NB

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Mobile Broadband Has Taken Off

Devices:- HSPA modules from $70 to $35 in 18 months

- Over 2,000 HSPA devices(624 handsets, 446 NBs, 226 USB modems, ) Source: GSMA, 2010

128337

GSM / WCDMA / HSPA:- Over 4 billion subscribers- 89.7% market share- Over 98% of commercial

WCDMA operators have launched HSPA service

Subscribers:- 5x growth in 3 years- Over 15% of total mobile subscribers in 2012

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Fast Developments in Mobile Broadband Technologies

Note: Dates refer to standards finalized

Rel-5/6 HSPADL: 14.4 MbpsUL: 5.7 Mbps

Rel-7 HSPA+DL: 28 MbpsUL: 11.4 Mbps

Rel-8 HSPA+DL: 42 MbpsUL: 11.4 Mbps

DL: 2x2 MIMO UL: 16QAM

DL: 2x2 MIMO+64QAM or DC+64QAM

DL: DC+MIMO+64QAM UL: DC

DL: 4x4 MIMO, 20MHz,64QAM UL: 1x2 MIMO, 20MHz,64QAM

LTE Series Evolution(OFDM-based)

HSPA Series Evolution(WCDMA-based)

ITU 4G Concept

Rel-8 LTEDL: 326 MbpsUL: 86 Mbps

Rel-9 LTEDL: 326 MbpsUL: 86 Mbps

Rel-10 LTE-ADL: 1 GbpsUL: 500 Mbps

Rel-9 HSPA+DL: 84 MbpsUL: 23 Mbps

Chunghwa Telecom will launch HSPA+ 21Mbps service by end of 2010 and then HSPA+ 42 Mbps in 20113GPP LTE Rel-8 has finalized at early 20092 LTE services launched at Sweden and Norway in 2010

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Evolution Path toward pre-4G

LTE is Now the Global Choice

TD-LTE

80 LTE Network Commitments (July 2010)

Source: GSA

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LTE Rel-8 Major FeaturesFeatures LTE (3GPP Rel-8)

Network Architecture Flat, IP based (eNB+aGW)Channel BW 1.4, 3, 5, 10, 15, 20 MHzDuplex Mode FDD and TDD

Multiple Access Scheme DL: OFDMA, UL: SC-FDMA

Peak data Rate DL: 172 Mbps (2x2 MIMO, 20MHz)UL: 86 Mbps (1x2 SIMO, 20MHz)

Resource Allocation Localized+Distributed (localized focus)Mobility Support Up to 350 km/h

Modulation and Coding QPSK, 16QAM, 64QAMControl: CC, data: TCAntenna Configuration eNBxUE = 2x2, 4x2, 4x4 (baseline: 2x2)

Latency Link layer: < 5 ms, Handoff: < 50 ms

Handover Hard Handover

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LTE Rel-8 UE Categories

Commercial USB dongle (Cat. 3) is available now

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ALL-IP Architecture - SAE

GGSN

RNC

3GPP R6

SGSN

BTS

GGSN

3GPP R7

BTS

RNC

Directtunnel

GGSNInternet HSPA

BTS w/ RNC

Directtunnel

SGSN

= user plane= control plane

SGSN

Source: NSNSAE: System Architecture Evolution

SAE GW

LTE/SAE

eNB

MME

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LTE/SAE EPS Architecture

EPC: Evolved Packet CoreEPS: Evolved Packet System

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Voice over LTE

Three LTE voice solutions are proposed and still under development

CS FallbackVoice Call ContinuityVoLGA (Voice over LTE via Generic Access)

GSM and/or 3G circuit-switched voice will continue to play an important role due to very maturity and good coverage

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3GPP LTE Frequency Bands

= Under study in 3GPP

Ref: TS 36.104 Base Station (BS) radio transmission and reception

1880-1920China TDD 39

2570-2620IMT Extension Center Gap

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2.3 TDD

PCS 1900Center Gap

TDD 1900

TDD 2000

IdentifierTDD

2300-240040

(1915)1910-193037

1850-19101930-1990

35, 36

1900-19202010-2025

33, 34

Frequencies (MHz)Band

1880-1920

2570-2620

2.3 TDD

IdentifierTDD

2300-240040

(1915)1910-1930

--

-

Frequencies (MHz)Band

3400-36003.5 GHz

3.7 GHz

Additional (FDD&TDD)

3600-3800

3400-36003.5 GHz

3.7 GHz

Additional (FDD&TDD)

3600-3800

FDDBand Identifier Frequencies (MHz)

1 IMT Core Band 1920-1980/2110-2170

2 PCS 1900 1850-1910/1930-1990

3 GSM 1800 1710-1785/1805-1880

4 AWS (US & other) 1710-1755/2110-2155

5 850 824-849/869-894

6 850 (Japan) 830-840/875-885

7 IMT Extension 2500-2570/2620-2690

8 GSM 900 880-915/925-960

9 1700 (Japan) 1750-1785/1845-1880

10 3G Americas 1710-1770/2110-2170

11 UMTS 1500 1428-1463/1476-1501

12131417

US 700 698-716/728-746777-787/746-756788-798/758-768704-716/734-746

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World Major LTE Bands

FDD-LTE frequency bandsEurope: 2.6GHz, 790-862MHzUSA: 700MHzJapan: 1.5, 1.7, 2.1GHz

TDD-LTE frequency bandsChina: 2.3GHz, 2.6GHzEurope: 2.6GHz

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Taiwan Frequency Allocation(1/2)

825 845 870 890 891 915 936 960 MHz

GSM 9003G 3G GSM 900

1710

1765

1805

1860

1915

GSM 1800

GSM 1800

1975

2010

2015

2110

2165 MHz

3G 3G

3G TDD

1920

1905

PHS

Guard band

2565 2595 2625 26602500 2690

BWA(WiMAX)

BWA(WiMAX)

Reserved Reserved

MHz

BWA(WiMAX) 35MHz65MHz

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Taiwan Frequency Allocation(2/2)

700MHz bands are still on use for analog TV and specific purposeNCC plans to clear 700MHz bands in next three years to enable the digital dividend effect

LTE frequency plan is still unresolved

704 794698 MHz108MHz

730 806Low

Power RF

Cleared in June 2009

To be clear by end of 2012

To be clear Source: NCC

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Taiwan LTE DevelopmentsLTE Trial Network

Chunghwa Telecom (CHT) cooperated with Ericsson, NSN, and ALU to conduct FDD LTE trials in 2010~2011National Chiao Tung University (Hsinchu), NSN, Chunghwa Telecom and China Mobile built up a TD-LTE Trial in May 2010

LTE SystemsITRI TW4G ProjectIII LTE femtocell

LTE EquipmentsChipset: MediaTek, Phone: HTC, Modem Card: ZyXEL, AWB,

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3GPP Taiwan Members

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CHT LTE/LTE-A Developments

Long-Term Engage in LTE/LTE-A ResearchLink/system-level simulatorNetwork dimensioning toolOver 60 paper publications and 30 patent applications

Actively Participate in 3GPP LTE/LTE-A StandardizationSubmit 84 contributions since 2006Collaboration with industries and research organizations such China Mobile, HTC, ITRI, etc.

Conduct LTE Field Trial from 2010Setup FDD-LTE & TDD-LTE Trials to evaluate performance

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3GPP Meeting in Taiwan

CHT and HTC jointly won the right for hosting the 3GPP RAN1# 64 meeting (Feb. 2011) in Taiwan

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CMCC-NCTU-CHT-NSN Jointly TDD LTE Trial

()

()

CHT Service Farm(IMS, MOD)

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Test result of TDD LTE Trial

TDD-LTE Test Result @ 20MHz, 2x2 MIMO, with Cat. 4 UE

~ 80Mbps (6.67 bit/Hz)Throughput (DL)

Throughput (UL) ~ 15.3 Mbps (1.91 bit/Hz)

User Plane Latency (RTT) 24ms~ 35ms

Frequency: 2.3 GHzBandwidth: 20 MHzDL: UL = 3:2

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TD-LTE Video Call Between Taipei and Shanghai

TD-LTE TD-LTE

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FDD-LTE Trial NetworkChunghwa Telecom conducted FDD-LTE Trials (700MHz, 2.6GHz) with Ericsson, NSN and ALU in 2010-2010

LTE Trial Network

IMS Applications

IMS SBC Video

Server

On-line GamingServers

MODStreamingServer

StreamingServer

HD Streaming

Samsung

HUB

InternetHTC

Samsung

ApplicationServer

IMS Device

LTE Dongle + Notebook

LTE Dongle + Notebook

eNodeB

EPC (evolved packet core)

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Test Result of FDD LTE TrialRTT and Throughput Testing w/ Cat. 3 Data Card

10ms

30ms

DL: ~60 Mbps(FDD 2x10 MHz)

DL: ~90 Mbps(FDD 2x 20 MHz)

RTT : 10~30ms

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LTE Trial Demo (1/2)

LTE Dongle

HD Video over LTE FDD-LTE BTS

HD Video and IMS Applications Demonstration of CHTs LTE Trial Network in VTC2010-Spring (May 17-19, Taipei)

IMS e-Family Servicesover LTE

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LTE Trial Demo (2/2)IMS e-Family Phone Service

CommunicationInformationEntertainmentSurveillance

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Concluding Remarks

Mobile broadband era has taken off, LTE becomes the global choice of pre-4G technologySpectrum and smart devices are the key factors for the development of mobile broadband servicesLTE operator shall consider the service differentiati