Iscit2007 keynote juergenschindler

Dr. Jürgen SchindlerNokia Siemens Networks

October 25th, 2007

(R)evolution from 3G to LTE

2 © Nokia Siemens Networks. All rights reserved.

Trends

• Wireless industry faces spectrum liberalization

• Subscribers go for predictable communication costs

Flat Rates

• Ever increasing device capabilities are moving away from network capabilities

Device Capabilities

• Services and Applications are moving towards the network/internet

Services / Applications

• I&C industry observes a growing trend towards an all-IP architecture

All IP Trends

• Operators observe increase in wireless data usage

Wireless Data

Spectrum

IP

€


Operators are launching HSPA on flat rate

• Germany: 400 MB for €29 5 GB for €42

UK: 120 MB for €9

• HK: Unlimited for €46Italy: 5 GB for €19Austria: 30 GB for €59

• Switzerland: 2.5 GB for €36 UK: 1 GB for €66

• Germany: 5 GB for €49 UK: 3 GB for €36

• Singapore: 1 GB for €19

Source: Operator webpages June 07

http://www.orange.fr/0/visiteur/PV?PS=GEHPACCRTS


As a result the traffic in networks is growing strongly…

1000GByte

Daily HSDPA traffic over example European network

• In many networks supplied by Nokia Siemens Networks HSDPA traffic has grown significantly

– Exceeding 1200GB daily– Reaching 1Mbps per

NodeB– Up to 160GB for single

user per month, typically >500MB/month

– HSDPA traffic has exceeded voice volume quickly after launch

– In some networks HSDPA counts for up to 80% of the traffic volume

HSDPA data volume (MAC-d) at lub [MA-7]


New Technologies are needed to maintain profitability

Euro

per

mon

th

15

20

25

30

35

40

2008 2009 2010 2011 2012 2013 2014 2015

10

45

Year

Euro

per

mon

th

15

20

25

30

35

40

2008 2009 2010 2011 2012 2013 2014 2015

10

45

Year

0

5

10

15

20

25

Euro

100

30

35

40

200 300 400 500 600 700 800 900 1000

HSPA

WCDMA

EDGEGPRS

Served MB per User per Month

0

5

10

15

20

25

Euro

100

30

35

40

200 300 400 500 600 700 800 900 1000

HSPA

WCDMA

EDGEGPRS

Served MB per User per Month

Declining data access revenue per subscriber

High network infrastructure cost per served MB

Spectrum – the precious building ground for operators


Source: Ofcom

Radio Spectrum is a Scarce Resource …


Source: Ofcom

coverage capacity

… and Everyone wants a share of the „Sweetspot“


Urban

2006 2008 2010 2012 2014 2016 2018 2020

Rural

2006 2008 2010 2012 2014 2016 2018 2020

or

2.6 GHz

2.1 GHz

2.6 GHz

2.1 GHz

LTE

UMTS

UMTS

LTE

900 MHz

900 MHz GSM

or

GSM UMTS

LTE

LTE

Scalable bandwidthSpectrum migration scenarios for LTE Cost efficient deployment by usage of lower frequency bands


Standardization – to make sure that it all fits together


Technology evolution

GSM/WCDMAGSM/WCDMA

’05 ’06 ’07 ’08 ’09 ’10

WiMAX-802.16e (Mobile)WiMAX-802.16e (Mobile)

HSPAHSPA

Mob

ileBr

oadb

and

Wire

less

14/2.0 14/5.7 42/113.6/0.4

46/ 7 92/14[Downlink / Uplink](peak rate)

TDD

FDD TrialTrialPS Only I-HSPA (pre-LTE)I-HSPA (pre-LTE)

LTE LTE 173 / 58

10 Mbit DL, 14Mbit Cell Capa MBMS

DemoDemo Trial Trial

EDGE EDGE Evolution0.6/0.240.3/0.24 1.2/0.5


RAN4 Core Requirementsand Performance:

3GPP LTE Standardization Status

SAE :

Report on TechnicalOptions and ConclusionsTR 23.882

SA2 – Stage 2 :Function Specifications

CTx – Stage 3:Protocol Specifications

LTE :

RAN Stage 2

RAN Stage 3:

E12/07

Functions for LTE

Functions for 3GPP AccessFunctions for non-3GPP Access

06/08

E12/08 freeze

03/0709/07

12/07

Delayed up to 3 month

Delayed up to 6 month

A S O N DQ3 Q4

2006J F M A M J J A S O N D

Q1 Q2 Q3 Q4J

2007 2008F M A M J J A S O N DQ1 Q2 Q3 Q4

RAN1

RAN2

RAN3

Full SpecificationITU & regulation issues

RAN5 UE Testing:80% Completion40% Completion

open


NGMN Consortium(as of 07/2007)


NSN LTE demonstratorfor Radio and Core

Screenshot(measurement &simulation results)


LTE-SAE Trial Initiative

Planning and paper testing

2006Q1 Q2 Q3 Q4

2007Q1 Q2 Q3 Q4

2008Q1 Q2 Q3 Q4

2009Q1 Q2 Q3 Q4

2010Q1 Q2 Q3 Q4

Interoperability

Air-interface principles

Test of basic functions

IO DT

IO T

Friendly customer trails

Proof of Concept

Trials

M.0 M.1 M.2 M.3 M.4

M.5 M.7 / M.8M.6 M.9

M.10 M.12M.11

Planning and paper testing

2006Q1 Q2 Q3 Q4

2007Q1 Q2 Q3 Q4

2008Q1 Q2 Q3 Q4

2009Q1 Q2 Q3 Q4

2010Q1 Q2 Q3 Q4

Interoperability



IO DT

IO T


Proof of Concept

Trials

M.0 M.1 M.2 M.3 M.4

M.5 M.7 / M.8M.6 M.9

M.10 M.12M.11

2006Q1 Q2 Q3 Q4

2007Q1 Q2 Q3 Q4

2008Q1 Q2 Q3 Q4

2009Q1 Q2 Q3 Q4

2010Q1 Q2 Q3 Q4

2006Q1 Q2 Q3 Q4

2007Q1 Q2 Q3 Q4

2008Q1 Q2 Q3 Q4

2009Q1 Q2 Q3 Q4

2010Q1 Q2 Q3 Q4

Interoperability



IO DT

IO T


Proof of Concept

Trials

M.0 M.1 M.2 M.3 M.4

M.5 M.7 / M.8M.6 M.9

M.10 M.12M.11

Test areaDemonstrator V1.1

2.6GHz / 20MHz BW

Pre-Commercial-HW900MHz/1.25MHz BW


LTE – the beautiful solution


Migration Options to LTE

LTE R8

Enabling flat broadband architecture

CDMA

Leverage existing handset base

I-HSPA

Greenfield

GSM/(E)GPRS

W-CDMA/HSPA


NSNs modular base station concept Multi-radio evolution made easy

• Same platform for all technologies

• New site acquisition and construction principles with Flexi BTS

• Easy building of efficient and flexible multiradio sites

• Standardized interfaces between modules

• Leading 2G/3G inter-working features

WCDMA/HSPA

LTE

WiMAX

Only 1.1m

GSM/EDGE


Basic Concepts / Architecture

Access Core Control

eNodeB aGW IMS HLR/HSS

Flat Overall Architecture 2-node architectureIP routable transport architecture

Improved Radio PrinciplesNew transmission schemataMulti-antenna technologiesSignaling and scheduling optimization

New Core ArchitectureSimplified Protocol StackSimple, more efficient QoSUMTS backward compatible security

LTE / SAE introduces the mechanism to fulfill the requirements of a next generation mobile network

RAN MME ISNGW

eUtran


Flat LTE Architecture

GSM/EDGE/

UMTS/HSPA

Access Core Control

Node B RNC

IMS HLR/HSS

LTE &

I-HSPA

Shift of functionality

BTS BSCMSCMGW

SGSN GGSN

eNodeBaGW

MGW

• Introduction of I-HSPA with LTE Architecture and UMTS Air Interface• Interworking, smooth migration, service continuity and investment protection


Key Principles of the LTE Air Interface

Fast Link Adaptation

due to channel

behaviour

Short TTI = 1 msTransmission time interval

AdvancedScheduling

Time & Freq.

TX RX

Tx RxMIMO

Channel

DL: OFDMA

UL: SC-FDMA

scalable

64QAMModulation

ARQ

Automatic RepeatRequest


OFDM

• Power efficient uplink increasing battery lifetime• Improved cell edge performance by low peak to average ratio• Reduced Terminal complexity

Uplink:

SC-FDMA

• Enabling peak cell data rates of 173 Mbps DL and 58 Mbps in UL *

• Scalable bandwidth: 1.4 / 3 / 5 / 10 /15 / 20 MHz also allows deployment in lower frequency bands (rural coverage, refarming)

• Short latency: 10 – 20 ms **

• Improved spectral efficiency• Reduced interference• Very well suited for MIMO

Downlink:

OFDMA

* At 20 MHz bandwidth, FDD, 2 Tx, 2 Rx, DL MIMO, PHY layer gross bit rate ** roundtrip ping delay (server near RAN)


MIMO

2

50

100

150

200Mbit/s

MIMO up to 2x2

Dual Antenna Terminals

Higher-order modulationand turbo codesToday

User closed to BTS Dual Stream

High Datarates

User closed to cell edge Single Stream

Diversity Gain

MIMO channel

Transmitter

Antennaarray

Antennaarray

Antennaarray

Antennaarray

MIMO Base band

MIMO Base band

Receiver

MIMO Base band

MIMO Base band


Comparison of Throughput and Latency

Summary – what to take away?


LTE brings significant benefits both foroperators and end users

• Reduced complexity, flat IP based packet-only architecture lower TCO (CAPEX and OPEX)

• Allow for introduction of cost efficient flat-rate pricing structures.

• Inter-working with legacy systems asintegral part of service continuity

• Scalable bandwidth allows flexible deployment with limited spectrum

• Significant improvements in spectral efficiency and data performance for multimedia services

• Enriched user experience with real time, interactive services and seamless connectivity

• Wide area Broadband mobility up to high speeds

• Increased Throughput with decreased response times (DSL like behavior)

• A wide variety of devices and services

3.5G LTE 3.5G LTE

Peak Throughput

Latency

Facto

r 10

Factor 2-3

3G 3.5G LTE

50%

>>50%

Cost/MByte


Thank you for your attention!

Iscit2007 keynote juergenschindler

Technology

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