introduction and motivation of lte

© Telecom Italia S.p.A. 2009 - All rights reserved

3G Long Term EvolutionValencia, May 20th 2009

IntroductionIntroduction and Motivation of LTEand Motivation of LTE

“I saw the angel in the marble and carved until I set him free.”Michelangelo

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Telecom Italia Lab (TILab), based in Torino (Italy), is the competence center for Research & Development and Testing within the Telecom Italia Group.

Features know-how, resources and activities on innovation and engineering of wireline and mobile networks.

Telecommunication excellence center promoting service, technology and process innovation.

A few A few wordswords onon…… Telecom Italia LabTelecom Italia Lab

Torino

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The wireless evolution trendThe 3GPP standardization towards Long Term Evolution

The 3GPP standardization pathLong Term Evolution targets and requirementsOverview of 3GPP technical specificationsThe relevance of the standardization phase

LTE frequency bandwidthsCreating the ecosystem

Next Generation Mobile Network (NGMN)LTE/SAE Trial Initiative (LSTI)

The Mobile broadband future Internet numerology

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The mobile communications revolution involves:

New emerging telecommunications applicationstelecommunications applications

multimedia streaming

music and video download

mobile gaming

content browsing

…

New communication requirementscommunication requirements

instant-on

always-on

connection everywhere, anytime

multi-megabit throughput

…

To achieve this revolution strongly depends on increasing the data rate available at the mobile user.

higher spectral efficiency

higher bandwidths

lower cost per bit

improved QoS

The The wirelesswireless evolutionevolution trendtrend

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User and operator requirements and expectations are continuously evolving, and different competing radio access technologies are emerging. Work has started in the 3rd Generation 3rd Generation Partnership ProjectPartnership Project (3GPP3GPP) to define a Long Term EvolutionLong Term Evolution for 3G, which will:

stretch the performance of 3G technology;

meet user expectations and ensure 3G competitiveness in a 10-year perspective and beyond.

The fundamental targets of this evolution — to further reduce user and operator costs and to improve service provisioning (more services at lower cost with better user experience) — will be met through improved coverage and system capacityimproved coverage and system capacity as well as increased data ratesincreased data rates and reduced reduced latencylatency and reduced cost for the operatorreduced cost for the operator.

As a consequence, 3GPP has launched the study item Evolved UTRA and UTRANEvolved UTRA and UTRAN, a.k.a. Long Term Long Term Evolution (LTE)Evolution (LTE).

The LTE project is not a The LTE project is not a standard, but it will result in standard, but it will result in the new evolved Release 8 the new evolved Release 8 of the UMTS standard.of the UMTS standard.

The 3GPP The 3GPP standardizationstandardization pathpath

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Some Some detailsdetails on 3GPP on 3GPP evolutionevolutionRelease '99 (March 2000) : UMTS/W-CDMA

Release 5 (March 2002) : HSDPA

Release 6 (March 2005) : HSUPA, Advanced HSDPA receivers

Release 7 (June 2007) : HSPA+ (DL MIMO, Higher Order Modulations)

• 3GPP work on 3G evolution started in November 2004

• Release 8 specifications frozen in March 2009

• Currently, LTE standardization work is in progress under Release 9

• Field trials planned in 2009

• Target Deployment in 2010-2011

Release 8 and beyond : Long Term Evolution (LTE)

1999 2002 2005 2007 2008 2011

WCDMAWCDMA

Rel. 99 Rel. 4

HSDPAHSDPA

Rel. 5

HSUPAHSUPA

Rel. 6

HSPA evolutionHSPA evolution

Rel. 7 Rel. 8 Rel. 10

LTELTE LTELTE--AA

“CDMA path”

“OFDMA path”

2009 2010

Rel. 9

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The 3GPP is standardizing the Evolved-UTRA (E-UTRA) radio interface with the goal of satisfying the mobile broadband wireless accessmobile broadband wireless access requirements.

The objective of Evolved UTRA and UTRAN is to develop a framework for the evolution of the evolution of the 3GPP radio3GPP radio--access technologyaccess technology towards a highhigh--datadata--raterate, lowlow--latencylatency and packetpacket--optimizedoptimized radio-access technology that can provide service performance comparable with the current fixed line access at limited cost.

A set of target requirementstarget requirements have been identified by 3GPP within the technical report “Requirements for Evolved UTRA Requirements for Evolved UTRA (E(E--UTRA) and Evolved UTRAN (EUTRA) and Evolved UTRAN (E--UTRAN)UTRAN)” (Technical Report Technical Report TR 25.913TR 25.913), regarding:

Capability-related requirements

System performance requirements

Deployment-related requirements

Long Long TermTerm EvolutionEvolution requirementsrequirements

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High level capability-related requirements are considered for the evolution of the radio interface and radio access network architecture.

Peak data rate:Peak data rate: the possibility to provide significantly higher data rates than the current steps of 3G evolution, with target instantaneous peak data ratestarget instantaneous peak data rates up to 100 Mbps for the downlinkdownlinkwithin a 20 MHz spectrum allocation (5 bit/s/Hz) and up to 50 Mbps for the uplinkuplink within a 20 MHz spectrum allocation (2.5 bit/s/Hz).

NOTE:

• the peak data rate may depend on the number of transmit and receive antennas.

• reference UE configuration comprises 2 receive antennas (downlink) and 1 transmit antenna (uplink).

• the supported peak data rate should scale according to the size of the spectrum allocation.

Cell edge bit rate:Cell edge bit rate: increased cell edge bit rates, whilst maintaining same site locations as deployed today are required. Cell edge targets are significant since they impact the dimensioning of the networkdimensioning of the network and help deliver a more uniform user experience across the cellarea. Cell edge throughput should be measured at the 5th percentile.

Latency:Latency: significantly reduced control planecontrol plane latency (less than 100 ms) and user planeuser plane latency (below 10 ms).

CapabilityCapability--relatedrelated requirementsrequirements

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Average user throughput:Average user throughput: downlink average user throughput per MHz 3 to 4 times Release 6 HSDPA - uplink average user throughput per MHz 2 to 3 times Release 6 Enhanced Uplink.

Spectrum efficiency:Spectrum efficiency: should deliver significantly improved spectrum efficiency (bit/s/Hz/site), targeting an improvement, in a loaded network, of a factor 3 to 4 (in downlink) and of a factor 2 to 3 (in uplink) as compared to current standards (Rel. 6 HSDPA, Rel. 6 Enhanced Uplink).

Mobility:Mobility: E-UTRAN shall support mobility across the cellular network. It should be optimized for low mobile speed from 0 to 15 km/h. Higher mobile speed between 15 and 120 km/h should be supported with high performance. Mobility across the cellular network shall be maintained at speeds from 120 km/h to 350 km/h. The E-UTRAN shall also support techniques and mechanisms to optimize delay and packet loss during intra system handover.

Coverage:Coverage: the above throughput, spectrum efficiency and mobility targets should be met assuming the reuse of existing UTRAN sites and the same carrier frequency. E-UTRA should support the following deployment scenariodeployment scenario: up to 5 km cell range and, with a slight degradation, up to 30 km cell range. A cell range up to 100 km should not be precluded by the specs.

Different system performance requirements should be achieved with the system configuration of E-UTRA, while maintaining acceptable system and terminal complexitymaintaining acceptable system and terminal complexity, costcost and power power consumptionconsumption and compatibility with earlier releasescompatibility with earlier releases and with other systems.

System performance System performance requirementsrequirements

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Deployment scenarios:Deployment scenarios: the deployment scenarios that could be considered are a standalone standalone deployment scenariodeployment scenario (deploying E-UTRAN either with no previous network deployed in the area or with no requirement for interworking with UTRAN/GERAN) and an integrated deployment integrated deployment scenarioscenario (existing UTRAN and GERAN network deployed in the same geographical area).

Spectrum flexibility:Spectrum flexibility: a scaleable bandwidthscaleable bandwidth in order to allow deployment in different frequency bands, both in uplink and downlink (spectrum allocation: 1.25, 1.6, 2.5, 5, 10, 15, 20 MHz). Operation in paired and unpaired spectrum shall be supported.

Spectrum deployment:Spectrum deployment: is required to cope with coco--existenceexistence in the same geographical area and co-location with GERAN/UTRAN and between operators on adjacent channels. Co-existence on overlapping and/or adjacent spectrum at country borders.

InterworkingInterworking with 3GPP RAT:with 3GPP RAT: E-UTRAN terminals supporting also UTRAN and/or GERAN operation should be able to support measurement of, and handover from and to, both 3GPP 3GPP UTRAN and 3GPP GERANUTRAN and 3GPP GERAN with acceptable impact on terminal complexity and performance.

In order to protect operator and vendor investmentsprotect operator and vendor investments, the performance gain of any proposed update to, or evolution of, the 3G radio access or RAN must always be traded off against its impact on already made investmentsimpact on already made investments. So an additional requirement is the possibility for smooth smooth introduction of technical solutionsintroduction of technical solutions that fulfill the targets. Thus, any new or evolved radio accesstechnology must be able to coexist with current 3G radio access technologies and radio network architectures and vice versa.

DeploymentDeployment--relatedrelated requirementsrequirements

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All new Radio Access Network specifications for E-UTRA and E-UTRAN use the prefix 36.x36.x (rather than 25.x). The described radio interface covers the interface between the User Equipment (UE) and the network.

The radio interface is composed of the layer 1, 2 and 3. The 36.200 series36.200 series describes the layer 1layer 1(physical layer) specifications. Layers 2 and 3Layers 2 and 3 are described in the 36.300 series36.300 series.

3GPP TS 36.201 Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer; General description

3GPP TS 36.211 Evolved Universal Terrestrial Radio Access (E-UTRA); Physical Channels and Modulation

3GPP TS 36.212 Evolved Universal Terrestrial Radio Access (E-UTRA); Multiplexing and channel coding

3GPP TS 36.213 Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer procedures

3GPP TS 36.214 Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer; Measurement

3GPP TS 36.302 Evolved Universal Terrestrial Radio Access (E-UTRA); Services provided by the physical layer

3GPP TS 36.304 Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) procedures in idle mode

3GPP TS 36.306 Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) radio access capabilities

3GPP TS 36.321 Evolved Universal Terrestrial Radio Access (E-UTRA); Medium Acces Control (MAC) protocol

3GPP TS 36.322 Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Link Control (RLC) protocol specification

3GPP TS 36.323 Evolved Universal Terrestrial Radio Access (E-UTRA); Packet Data Convergence Protocol (PDCP)

3GPP TS 36.331 Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control (RRC) protocol

Overview of 3GPP technical specificationsOverview of 3GPP technical specifications

http://www.3gpp.org/specifications

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Standards are important to operators because:

1. Open standards ensure that there is a sufficient ecosystem behind the technology.

2. Open and standard interfaces allow multi vendor solutions.

3. International standards enable roaming solutions.

The success of a standard is not only its technical soundness (which is however a must!).

The commitment of the industry behind a standard is a key indicator.

It enables mass market economies and availability of multiple devices from multiple vendors.

In other words: the success of the technology!

What happens if a standard is not available at the launch of a technology?

The operator must rely on a single vendor pre-standard implementation (Limited number of terminals, No mass market economy, No roaming, Need to update the network to standard equipment in a second stage)

How to deal with pre-standard terminals?

The adoption of pre-standard solutions increases the costs for network deployment and operation and will likely result in customer dissatisfaction!

The relevance of the standardization phaseThe relevance of the standardization phase

Source: G. Romano, “Progress of LTE Standardisation”.Presented at: “Next Generation Networks”, Bath, April 2009. From paper to hardware…

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The potential LTE spectrum availabilityLTE spectrum availability:

LTE frequency bandwidthsLTE frequency bandwidths

LTE Deployment ScenarioLTE Deployment Scenario:

Source: “Spectrum Analysis for Future LTE Deployments”, Motorola White Paper.

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Next Generation Mobile Networks (NGMN)Next Generation Mobile Networks (NGMN)

http://www.ngmn.org

The Next Generation Mobile Networks (NGMN) Alliance, founded in 2006 by leading international mobile network operators, is a group of world leading mobile operators, technology vendors and research institutes.

NGMN's primary objective is to provide a coherent view of what operator community is going to require beyond currently deployed 3G networks.

Its goal is to ensure that the standards for next generation mobile networks and end user equipment will satisfy customer expectations upon future applications, as well as requirements of the network operators.

In June of 2008, NGMN selected LTE as the first technology that matched its requirements successfully.

Source: “The NGMN Alliance - An Overview”, 2009.Available at: http://www.ngmn.org/nc/downloads/techdownloads.html

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LTE/SAE Trial Initiative (LSTI)LTE/SAE Trial Initiative (LSTI)

February 2009February 2009: The LSTI's Proof of Concept activity has consolidated measurements from leading equipment vendors to show that the industry's targets for performance are achievable: LTE/SAE does exactly what it says on the tin. In addition to peak rates and minimum latency, results also reveal the 'real world' performance that operators will be able to offer to end users. Updates from the LSTI's Interoperability and Trials activities are also given.

http://www.lstiforum.com/Source: “Latest Results from the LSTI, Feb 2009”, 2009.Available at: http://www.lstiforum.org/file/news/Latest_LSTI_Results_Feb09_v1.pdf

The LSTI is an open initiative driven by Vendors and Operators launched in May 2007.

It currently counts 39 participants39 participants mapped over the entire LTE ecosystem.

Its objectives are to:

Drive industrialization of 3GPP LTE/SAE technology

Demonstrate LTE/SAE capabilities against 3GPP and NGMN requirements

Stimulate development of the LTE/SAE ecosystem * The latest companies to join LSTI: Bouygues Telecom, EMOBILE,

EB Elektrobit Corporation, Setcom, Cisco, DT Mobile, and Turkcell.

*

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The Mobile broadband futureInternet numerology

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While voice will always be important, mobile data is taking the driver’s seat as mobile operators develop their near and long-term technology strategies.

To meet and exceed subscribers’ expectations and requirements, mobile operators will offer new,innovative mobile data applications, supporting a seamless experience that provides end users with the access and ability to use the data-centric applications they use at home, in the office or on the go anywhere in the world.

The road to the mobile broadband future has several paths and each mobile operator will have different timetables and reasons for taking one path over another.

The Mobile broadband futureThe Mobile broadband future

All agree on the ultimate goal: an efficient all-IP wireless network capable of supporting voice, video and data services. Choosing the air interface best suited to meet tomorrow’s needs is the key to reaching that goal!

All roads lead to Long Term Evolution (LTE)! For the first time in the world, a future technology standard has spanned the U.S., Asia and Europe with commitments from leading operators on their planned deployment of LTE and a global consensus that LTE will become the dominant technology for the next generation of mobile broadband.

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Mobile broadband is already happening!Mobile broadband is already happening!

Telecom Italia: 28 MPS Mobile Broadband launching in Italy in 20Telecom Italia: 28 MPS Mobile Broadband launching in Italy in 200909

Telecom Italia first to offer HSPA+ Data Cards based on Qualcomm chipset capable of 28 Megabits per second downlink and 5.7 megabits per second uplink

Telecom Italia will be offering mobile broadband connections speeds of up to 28 Mps in 2009.

At its Turin Labs, Telecom Italia is the first company in Europe to run field trials of the next-generation broadband products that are coming to market in spring 2009. HSPA+ technology, using Qualcomm chipsets, will roll out in the first half of next year in an initial Data Card offering for PCs enabling mobile internet connections at data rates of up to 21 Mps (5.7 Mps upload). Downlink speeds will rise to 28 Mps in the second half of 2009.

“This is truly a game-changing milestone for the European mobile market,” said Enrico Salvatori, Senior Vice President and General Manager of Qualcomm Europe. “Telecom Italia is leveraging our technology to enable a new generation of wireless services that redefine the capabilities of the mobile internet and transform the wireless experience.”

“This milestone confirms Telecom Italia’s commitment to innovation and bringing the best possible user experience to its subscribers,” said Luca Tomassini, Head of Business Innovation at Telecom Italia.

Rome, 22 December 2008

PRESS PRESS RELEASERELEASE

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Sources: http://www.google.it, http://www.google.com/trends

A search for the keyword LTE, on GOOGLE Italy, brings 8.460.000 result links and 6.225 news links!

A search for the keyword Mobile Broadband, on GOOGLE Italy, brings to 20.300.000 result linksand 10.561 news links!

Interesting is the result coming from GOOGLE Trends: ☺

Internet numerologyInternet numerology

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¡Gracias!

Valeria D’Amico____________________________________TELECOM ITALIATelecom Italia Lab (TILAB)Wireless Access Innovation

Email: [email protected]

introduction and motivation of lte

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