Bernard Breton- Mentum- Network Planning

7/31/2019 Bernard Breton- Mentum- Network Planning

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Optimizing CAPEX and Ongoing

OPEX Through Optimal Planning ofLTE Network Rollout

COO & CSO - Mentum

LTE World SummitAmsterdam May 2010


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Agenda Improving Capacity

Minimizing Rollout Cost Conclusion

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About Mentum

Innovator in 4Gtechnolo ies

Mentum is a global leader in wireless networkdesign and optimization

250+ customers in 90+ countries

3

First to market for LTEand WiMAX networkplanning solutions

Complete product andservice offering focusedon wireless planning

LTE Readiness

Programme3


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LTE is About Capacity Mobile data usage is

expected to double

each year for thenext five years

Mobile video is the

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largest and fastestgrowing service,followed by access

to the world wideweb


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And Cost

5

Sources: Cisco Visual Networking Index, 2009; Pyramid Research


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LTE Network Lifecycle

Initial network decisionswill have a long lastingimpact on the network

NetworkAutomation

NetworkOptimization

NetworkManagement

Network

66

Design Quality Operational Efficiency

Planning

StrategicPlanning


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LTE Network Lifecycle

Better

Design

Higher

Cell

Density

Better design leads tobetter CINR

Cells closer to end-user

for greater capacity &CINR

77

ImprovedCapacity

Increased

Bandwidth

Better

Equipment

Improved spectralefficiency & greaterspectral real estateAntenna systems & ICIC

can improve spectralefficiency


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Network Cost Considerations Better network

design is the most

affordable way toimprove capacity

Increased cell$25

$30

$35

Increasedspectrum

8

count andspectrum offer thegreatest capacity

gains but at ahigher cost

$0

$5

$10

$15

$20

0% 10% 20% 30% 40% 50% 60%* Based on 20% of radio planners focused on LTE network design using bestpractices and state-of-the-art planning products** Cost completely driven by politics and hence, cannot be estimated

*** Based on replacement of 20% of the antennas, deployment of MIMO 2x2 andICIC**** Based on 25% increase of cell count and a 0.1% femtocell penetration rate

Better network design

Better network equipment

Increased cell density


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Estimating Network Capacity Network capacity is a

direct function of

Bandwidth Signal-to-noise ratio

LTE can exploit highsi nal-to-noise ratios to Reduced round-trip delay

Fast Hybrid ARQ(with Soft Combining)

D namicall shared in time s ace-time

Shared Channel Transmission

Fast Radio ChannelDependent Scheduling

Fast Link Adaptation

Higher-order Modulation

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deliver higher datarates Higher order modulation MIMO

Adaptive time &frequency scheduling And more...

& code/frequency domaine.g. scheduling of users on2 ms time basis

Data rate adapted to radio conditions

16/64QAM in complement to QPSK forhigher peak bit rates

Reduced round-trip delay

Short TTI

x ms

AMC and fast-channel feedback

Link Adaptivity


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Capacity Assessment There is a tremendous

gap between

theoretical capacity andthe capacity of a real-world network

Design quality

50.00%

60.00%

70.00%

Initial Network

Tilts optimized

Tilts & 20% azimuths optimized

Tilts & azimuths optimized

50.00%

60.00%

70.00%

Initial Network

Tilts optimized

Tilts & 20% azimuths optimized

Tilts & azimuths optimized

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Site location Interferencemanagement

Technology and

equipment decisionsalso influence capacitymaterially (E.g. pertechnology e-Tiltantennas)

0.00%

10.00%

20.00%

30.00%

40.00%

0 5 10 15 20 25 30 35Average Maximum Achievable Data Rate (mpbs)

0.00%

10.00%

20.00%

30.00%

40.00%

0 5 10 15 20 25 30 35Average Maximum Achievable Data Rate (mpbs)


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Capacity is CINR Driven Achieved CINR is

largely influenced by

network planningdecisions Good planning leads

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better capacity

Better throughputleads to better CINR

as pay-loadgenerates lessinterference


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The Virtuous Circle of GoodDesign...

Better CINR =

BetterCapacity

Each User

Uses Less

Resources

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Less

Interference

= Better CINR

Less

Resources

= Less

Interference

The Virtuous Circle

of Good Design


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Is Also the Vicious Circle ofBad Design

Worse CINR =Less

CapacityEach User

Uses More

Resources

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More

Interference

= Worse CINR

More

Resources

= More

Interference

Is Also the Vicious

Circle of Bad Design


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Demand-Focused DesignTraffic Hot Spot

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Initial network Optimized Design

Spectral efficiency = 1.57 bit/Hz Spectral efficiency = 1.85 bit/Hz(17.5% gain)


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Users are Indoors 70% of the demand is

indoors

Network optimizationis optimal when, andonly when, performed

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occurs


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GroundGround

Low traffic pollution

Medium traffic pollution

High traffic pollution


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20m20m

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40m40m

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1:1 Overlay

Each NodeB is overlaidwith an eNodeB

Simple rollout, limited

Demand-Focused RolloutProgressiveDeployment

eNodeBs are overlaidon the basis of demandand coverage

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High cost, large-scalespectrum refarmingrequirements

Makes a lot of sense forHSPA when a carrier isshared with WCDMA

Network is pre-optimized prior to rolloutto identify bestconfiguration & sites

Site densification &coverage expansionwhen demand justifies it


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Rollout Cost

X

Initial roll-out is drivenby existing networkrather than demand

Site densification &

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CAPEX+OP

Time

DEMAN

Initial demand is initiallyvery low

1:1 Overlay Progressive overlay LTE Demand

optimization required toovercome poordesign


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Network Capacity

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CAPACIT

Time

DEMAN

1:1 Overlay Progressive overlay LTE Demand


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No One-Size Fit All Approach Strategic decisions

related to LTE

introduction critical toidentify optimal rolloutstrategy

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Target market First or late to market

with LTE Competitive

landscape Network sharing &

roaming agreements Etc...


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Conclusion LTE is about capacity and cost

LTE offers several ways to increase networkcapacity

Improvement of capacity does not come free

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it comes to improving capacity

Optimal rollout can ensure cost tracks revenueand network planning is key to optimal rollout


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Questions?

LTE

Next Generation LTE Network Planning Solution

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2010 LTE World Summit Bronze SponsorMay 18th-19th 2010, AmsterdamVisit Mentum at Stand No. 29

www.mentum.com

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Bernard Breton- Mentum- Network Planning