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LTE Deployment Challenges and Opportunities

Mindspeed Technologies Mobile World Congress Feb 27 - March 1, 2012

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Agenda

Wireless Broadband Market Update

LTE Deployment Scenarios

Challenges and Opportunities for LTE

Opportunities for Mindspeed

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Mobile traffic skyrocketing

Mobile internet in 2010 is bigger than whole internet in 2000

AT&T 2Q06-2Q09 5000% growth

Ericsson 2Q09-2Q10 3X

Cisco MVNI 108% CAGR

100% CAGR = 1000X growth in ten years

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Devices Have Forever Changed

mainframe

mini

micro

laptop

netbook

tablet

GSM 3G

Smartphone

analog

5MB/month

5GB/month

5KB/month

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Throughput Density: A Problem To Resolve

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2G networks for voice are rarely overloaded, mainly a coverage game

A Macrocell can deliver the service to hundreds of users with expected quality of services

3G applications start to show the impact of highly capable UE taking away available throughput, e.g., iPhone, iPad

China Mobile doubled their 2G/2.75G BTS in two years to support data on EDGE

ATT ended their unlimited data plan for the iPad less than 1 month into the launch of the first iPad

UE capability is exponentially increasing

A future LTE UE can perfectly take the

entire throughput capacity of a cell-site

4G networks will have to address the throughput density issue

A Macrocell capacity of 150Mb/s can not

satisfy the need of hundreds of users Delivering throughput to users is the mission of LTE

Two key ingredients: coverage and throughput density

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128 384

2000

20000

1

10

100

1000

10000

100000

2G GSM

2.5G GPRS

2.75G EDGE

W-CDMA LTE

Kb

/s

Mobile Device Throughput Capability

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Wireless Broadband Usage Survey

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Industry consensus is that indoor coverage will be a

crucial issue for wireless broadband

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DAS: Current Solution For Indoor Coverage

Distributed Antenna Systems (DAS):

Take a Macrocell baseband module (BBU)

Use remote radio-head (RRH) at each floor

Distribute analog antenna signal from the RRH to multiple low power radio-heads

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Pros: Simple, effective to improve coverage Coexist well with Macrocell No hand-over issue from a radio-head to another

Cons: No throughput capacity improvement Radio-head malfunction not easily detectable Deployment requires power adjustment at each

radio-head, only viable for public buildings or enterprises

Very expensive

China

Unicom

China

Mobile

China

Telecom

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Comparison of Indoor Coverage Solutions

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Key User Experience Metrics

DAS WiFi Smallcell

Coverage Yes Yes Yes

Throughput improvement No Yes Yes

Mobility Yes No Yes

QoS/QoE Yes No Yes

Key Operator Concerns

DAS WiFi Smallcell

Deployment cost High Low Mid

Operating cost High Low Low

Capacity enhancement Difficult Easy Easy

Future evolution Difficult None Good

Control Yes No Yes

Coexistence with Macro Yes Yes Challenging

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Typical LTE Deployment Scenarios

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Phase-1: Macrocell based network build-outs (2010-2013)

Reuse current cell-sites and infrastructure like fiber networks

Phase-2a: Microcell/Pico to fill-in the coverage blind spots (2012-2014)

New cell-sites and subsequent infrastructure are main concerns

Phase-2b: Enterprise Pico/Femto to provide in-door coverage (2012-2015)

Interface with Enterprise Intranet yet under operator’s control is a major unresolved issue

Deployment scenarios and cost are also major issues

Phase-3: Femto to address coverage at home (2012-2016)

A major problem is backhaul

Operators with high speed wireline will have a huge advantage

Mindspeed Transcede solutions target Phase-2/3 deployments

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3x40MHz LTE-A Macro

3x(2x2 20MHz LTE or 4x5MHz TD-S/UMTS) Macro

20MHz LTE Backhaul + 20MHz LTE Access (Relay)

2x20MHz LTE (LTE-A, high-end Pico)

4x5MHz TD-S/UMTS (Rel’10, high-end Pico)

20MHz LTE + 2x5MHz TD-S/UMTS dual-mode

20 MHz High-end Micro (4T4R)

20MHz LTE + 5MHz TD-S/UMTS High-end dual-mode Pico

20MHz LTE out-door Micro/Pico (PoE)

2x5MHz TD-S/UMTS Pico (PoE)

10-15MHz LTE + 5MHz TD-S/UMTS low-end Pico (PoE)

20MHz LTE Enterprise Pico (PoE)

10-20MHz LTE low-end in-door Pico (PoE)

5MHz TD-S/UMTS (Home Femto or Pico) (PoE)

Fulfillment to Market Requirements

T2200

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Challenges and Opportunities

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Wireless broadband is taking off

Demand for throughput density, as well the need for indoor coverage, will force the use of small cell solutions

Off-loading traffic from macro cell as much as possible

Co-existence of LTE with 2G/3G requires SW upgradable dual-mode eNBs

Small cells require low power and low cost

Single chip SoC is the only viable solution

In-door coverage requires low cost, easily deployable solutions yet manageable by operators

Operators claim that they spend 3.5-4h technician’s time at $50/h rate for each customer home gateway installation

Not only cost CAPEX, but also limit the rate of large scale deployment

PoE is a key for Enterprise (no power line means no need for licensed technicians for installation)