1 Nortel Confidential Information

Next Generation Mobility: OFDM/MIMO and Flat Networks

Jay Huang, Ph.D. Vice President, Mobility and Converged Core Networks – AsiaNortel

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Agenda •• What does mWhat does market arket want? want?

•• End user experience: No bandwidth limitation End user experience: No bandwidth limitation

•• End user experience: End user experience: Low latency Low latency

•• AffordableAffordable, A, Anytime, nytime, AAnywherenywhere

• How is it addressed?• Disruptive Air interface - OFDM/MIMO

• Disruptive network architecture - Flat IP

• Disruptive application platform - IMS

• Nortel’s visions and values• OFDM / MIMO

• Nortel powers up OFDM/MIMO with 7 years experiences

• Flexible broadband backhaul

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What does market want? (1)VOIP / VideoConference

IP TV Mobile TV

Voice callVideo Call

Personal data Personal Internet

Personal Entertainment - Video (Movie), Games

Advertisement

Digit/Mobile cityEnterprises, Security Force and M-commerce

No bandwidth limitation for any applications and services

• High peak rate

• High average throughput per user

End user experience: No bandwidth limitation at all

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What does market want? (2)

End user experience: Low latency & high throughput

GPRS/EDGE(TDMA)

EV-DO / HSDPA(CDMA)

WiMAX / LTE / AIE(OFDM / MIMO)

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Affordable by mass market• High capacity network

• Low complexity

• Low cost

Being connected anytime, anywhere• Wide area coverage

• High speed mobility

Affordable, Anytime, Anywhere

What does market want? (3)

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Agenda • What does market want?

• End user experience: No bandwidth limitation

• End user experience: Low latency

• Affordable, Anytime, Anywhere

•• HowHow is itis it addressaddressed?ed?•• Disruptive Air interface Disruptive Air interface -- OFDM/MIMOOFDM/MIMO

•• Disruptive network architecture Disruptive network architecture -- Flat IP Flat IP

•• Disruptive application platform Disruptive application platform -- IMSIMS

• Nortel’s visions and values• OFDM / MIMO

• Nortel powers up OFDM/MIMO with 7 years experiences

• Flexible broadband backhaul

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OFDM-MIMO is the trend

Freq

Time

1990 2000 2010

OFDM-MIMOWiMAX, AIE, LTE

FDMA(Analog)

TDMA(GSM)

CDMA(UMTS, CDMA2000)

Freq

Time

Freq

Time

Freq

Time

Voice onlyAnalogLow capacity

Voice + Basic DataDigital High capacity for voice

Voice + Better DataDigital High capacity for voice only

Broadband Voice/Video/ DataDigital (MIMO)High capacity for all services

Removing limitationon broadband usage

Experiencing Wireless Voice

ExperiencingWireless Broadband

Huge Success for Wireless Voice

Will be Huge Success for Wireless Broadband

ODFM-MIMO will enable wireless broadband

Removing limitationOn voice usage

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Key Technologies Breakthrough

> OFDMA: • Higher spectrum efficiency• Simplified Rx deign lower cost• Bandwidth flexibility

• 1.25 MHz to 20 MHz

> MIMO:• Multiple Tx and Rx antennas• MIMO improves peak rate,

spectrum efficiency and coverage through multiple paths

> Flat IP• IMS, VoIP, SIP• Mobile IP • Low latency

Nortel patented MIMO/OFDM was adopted by all major wireless standards

移动

本地

固定

UMTS / HSDPACDMA / EVDOWiMAX 16e

802.11, MeshWiMAX 16d

DSL / Cable

PSTN

Internet

Corporate

POTS

IP

Ethernet

OFDMMIMO

Mobility

接入网

IMSVoIPSIP

贺信网

Mobile

Fixed wireless

Fix

UMTS / HSDPACDMA / EVDOWiMAX 16e

802.11, MeshWiMAX 16d

DSL / Cable

PSTN

Internet

Corporate

POTS

IP

Ethernet

OFDMMIMO

Mobility

Access

IMSVoIPSIP

Core

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Network architecture revolution

RNCGGSN

GPRS/UMTS

LTE/HSOPA ASGW

RNC

SGSN

GGSN

SGSN

RNC

NodeB

Control plane User plane Control plane User plane

ASGW

eNodeB

MMFGGSN

SGSN

RNC/BSC

NodeB/BTS

Control plane User plane Control plane User plane

ASGW

eNodeB

MMF

Control plane User plane

ASGW

eNodeB

MMF

Broadband Oriented Network architecture

(2 layers)

Existing MobileNetwork Architecture

(4 layers)

Flat IP significantly reduce the latency &simply the network

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IMS Applications and Services

Rich set of proven services powered by IMS

3 2Trash Talk

Cellular WLAN

IPTV

Multiplayer Gaming Voice-Multimedia

Converged Mobility

WiMAX

Today

Tomorrow

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Agenda • What does market want?

• End user experience: No bandwidth limitation

• End user experience: Low latency

• Affordable, Anytime, Anywhere

• How is it addressed?• Disruptive Air interface - OFDM/MIMO

• Disruptive network architecture - Flat IP

• Disruptive application platform - IMS

•• NortelNortel’’s visions and valuess visions and values•• OFDM / MIMO OFDM / MIMO

•• Nortel powers up OFDM/MIMO with 7 years experiencesNortel powers up OFDM/MIMO with 7 years experiences

•• Flexible broadband backhaulFlexible broadband backhaul

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Why Nortel Mobile WiMAX?MIMO power WiMAX true performance

MIMO-enabledDevices

MIMO-enabledChipsets

MIMO-enabledInfrastructure

Leading PartnersLeading Partners

Access & IMSAccess & IMS

World-class partnersWorld-class partners

Real WiMAX isMIMO-enabled

OFDM/MIMO is clearly the “New Generation Wireless Technology”

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> Over 80 patents & patent applications on OFDM / MIMO alone> Standard essential patents for WiMAX 802.16d and 802.16e> Over 50% of 2004 3GPP OFDM Study Group Contribution> Significant 3GPP LTE Contributions> Active in promoting OFDM / MIMO for 3GPP2 Evolution > Ongoing effort on advanced topics : Collaborative MIMO, Virtual MIMO

Sub-carri

ers

Dedicated Traffic Data

time frequ

ency

propagation

channel

Time-slotted “Fat Pipe”

Nortel powers up OFDM / MIMOSynergies across 3GPP LTE, 3GPP2 OFDM/MIMO & WiMAX

7 years of OFDM/MIMO Research in Ottawa WTL

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Live network OFDM/MIMO experience since 2002

Nortel did the 1st OFDM/MIMO live network testing

7th floor location of Base Antenna

UCL Engineering Building, London

London – Dense Urban

7th floor location of Base Antenna

UCL Engineering Building, London

London – Dense Urban

12/3

6/7

16/1712/13

10/11

1

2/3

6/7

16/17

12/13

10/11

14/15

8/9

4/5

1920

3534

36

32 33

26

23 27

18

22

2425

21

30

29 28

31

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Base Location, UCL

Base Antenna located on 7th floor roof of UCL Engineering building. Surrounding buildings typically 6-storey or more.

12/3

6/7

16/1712/13

10/11

1

2/3

6/7

16/17

12/13

10/11

14/15

8/9

4/5

1920

3534

36

32 33

26

23 27

18

22

2425

21

30

29 28

31

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Base Location, UCL

Base Antenna located on 7th floor roof of UCL Engineering building. Surrounding buildings typically 6-storey or more.

Harlow – SuburbanView from Base Site

Dense urban trial location

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Nortel WiMAX Backhaul - Flexibility

Carrier

Ethernet

BTS5000

BTS5000

WiMAXBTS 5000

• Mesh • Extend coverage, reduce costs• Redundancy, reliability• Reduces # of wired connections

• Optical • Dense urban areas, geo dependent

• High capacity• Re-use existing infras.

• Microwave• Point to point• Partnerships

Mesh Backhaul

BTS w/ Fiber

BTS w/ Mesh

BTS w/ Mesh

BTS w/ Mesh

BTS w/ Fiber

BTS w/ Mesh

BTS w/ Mesh

BTS w/ Mesh

BTS w/ Fiber

BTS w/ Mesh

BTS w/ Mesh

BTS w/ Fiber

BTS w/ Fiber

BTS w/ Fiber

BTS w/ Fiber

Metro ERS8600 OME

6500

OME 1010

Optical

Ethernet

OME 6130

Field Proven, OPEX Savings

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