1. LTE Deployment Challenges
and Opportunities
Mindspeed Technologies
Mobile World Congress
Feb 27 - March 1, 2012
Nasdaq: MSPD 1
2. Agenda
Wireless Broadband Market Update
LTE Deployment Scenarios
Challenges and Opportunities for LTE
Opportunities for Mindspeed
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3. 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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4. Devices Have Forever Changed
5KB/month 5MB/month Smartphone
GSM 3G
analog
tablet
netbook
5GB/month
laptop
micro
mini
mainframe
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5. Throughput Density: A Problem To Resolve
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 Mobile Device Throughput Capability the
1 month into the launch of
first iPad 100000
20000
UE capability is exponentially increasing 10000
2000
1000 384
A future LTE UE can perfectly take the 128
Kb/s
100
entire throughput capacity of a cell-site 13
10
4G networks will have to address the 1
throughput density issue 2G
GSM
2.5G
GPRS
2.75G
EDGE
W-CDMA LTE
A Macrocell capacity of 150Mb/s can not
satisfy the need ofthroughput to
Delivering hundreds of users
users is the mission of LTE
Two key ingredients: coverage and throughput density
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6. Wireless Broadband Usage Survey
Industry consensus is that indoor coverage will be a
crucial issue for wireless broadband
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7. 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
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 China China China
radio-head, only viable for public buildings or Unicom Mobile Telecom
enterprises
Very expensive
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8. Comparison of Indoor Coverage Solutions
Key User Experience DAS WiFi Smallcell
Metrics
Coverage Yes Yes Yes
Throughput improvement No Yes Yes
Mobility Yes No Yes
QoS/QoE Yes No Yes
Key Operator DAS WiFi Smallcell
Concerns
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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9. Typical LTE Deployment Scenarios
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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11. Challenges and Opportunities
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)
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