LTE Network QoS Optimization

Evolution of Mobile Networks in Europe

Kimmo Aaltonen

Wireless Development Manager

November 2013

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Can you afford to be unsure about your network performance?

3 © 2013 EXFO Inc. All rights reserved..

Mobile Subscriber ARPU Keeps Going Down

$0,00

$2,00

$4,00

$6,00

$8,00

$10,00

$12,00

$14,00

$16,00

$18,00

$20,00

1Q10 2Q10 3Q10 4Q10 1Q11 2Q11 3Q11 4Q11 1Q12 2Q123Q12

4Q12

EMEA incumbents avrg Arpu

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… But on the Subscribers Side

0

500000000

1E+09

1,5E+09

2E+09

2,5E+09

3E+09

3,5E+09

WiMAX

LTE

GSM

W-CDMA

Mobile

0

200000

400000

600000

800000

1000000

1200000

LTE EMEA Subscribers

LTE

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Actual Market Pressure in Telecoms Industry

Customer

Satisfaction

Churn Rate

ARPU Revenues

Opex/Capex

QoS

-

+

-

- -

-

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Mobile Video Will Generate Over 66 % of Mobile Data Traffic by 2017

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Mobile Throughput - Theory vs. Reality

GSM Max 50 kbit/s

EDGE Max 200 kbit/s

UMTS 900 Max 21 Mbit/s

UMTS 2100 Max 21 Mbit/s

UMTS Dual Carrier Max 42 Mbit/s

LTE Max 100 Mbit/s

Coverage Map of Mobile Operator in Helsinki Capital Area

Average Data Speed of 3G Mobiles in Helsinki Capital Area

11.08.2011

I didn´t buy this!

I want my

money back!

8 © 2013 EXFO Inc. All rights reserved..

LTE Throughput Tests in Downtown Helsinki

If somebody could please enlighten me what is status

of these technologies in Helsinki, and when, if ever,

are we getting those 100 Mpbs speeds?

9 © 2013 EXFO Inc. All rights reserved..

QoS Problems Lead to Lower ARPU and Revenues

10 © 2013 EXFO Inc. All rights reserved..

Real E2E capacity test of LTE eNB (Base Station) with Simulators

E-UTRAN

S1-MME

S1-U

eNB

eNB

LTE

TEST

MOBILE

FOR

200

USERS

Data downloads FTP

Speech VoLTE, VoIP

WEB Browsing WWW

IP Services Data Generation

VoLTE

FTP

HTTP VoLTE

FTP

HTTP

Streaming Video

Video

Video

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Balanced Network Performance – Equal throughput for all Mobiles

60 UEs with FTP download

Stabile eNB Sheduler

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Unbalanced Network Performance – No More QoS for Mobiles

160 UEs with FTP download

Unstable eNB Sheduler

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Bad eNB scheduler performance = Bad Mobile QoE

Downlink

Scheduler

eNB

Channel Quality Indicator Report (CQI)

Control Information

ACK/NACK

High Speed Data Transmission

101110000111111100101001101

Scheduling functionality is not a part of the 3GPP specifications

Do you know how many mobiles subscribers your eNB scheduler can

handle inside one millisecond?

14 © 2013 EXFO Inc. All rights reserved.

How to Increase ARPU and Revenue with LTE?

Customer

Satisfaction

Churn Rate

ARPU Revenues

Opex/Capex

QoS

-

+ +

+ +

+

15 © 2013 EXFO Inc. All rights reserved..

LTE Rollout Increases CAPEX – Focus Should Be on Smart Rollout

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LTE launch increases ARPU

Multi technology Wireless Network Optimizing Challenges

2G,3G,4G

RAN IOT

CS-Fallback VoLTE

Data Data

4G: S1-U

3G: Iu-PS

2G: Gb

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Black Box Dilemma During Network Benchmarking Tests

It is not possible to see with test mobiles what happens inside the network

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Cost Effective Network QoS Optimization

Test UE

OSS S GW & PDN GW

SGi S1-U INTERNET

Uu

FTP Reference Server

High Performance Network Probe - Capturing & Analysis & KPIs

eNodeB

Needs data from:

Test Mobiles - Air Interface Information (CQI …)

Network Probes – Mobile Data Information (Application delay ...)

OSS Data - Network Statistics (Success & Failure Rates …)

20 © 2013 EXFO Inc. All rights reserved..

EXFO Wireline and Wireless Solutions for LTE Rollouts

REDUCE OPEX/CAPEX

FTB Ecosystem

+ EXFO Connect

›Automatically gather and

send test reports

RESOLVE MOBILE

NETWORK ISSUES

LTE and 3G Analyzers

and Simulators

›High performance mobile

application analysis for QoS

optimization

SPEED UP ETHERNET

ROLLOUTS

The revolutionary

EtherSAM turn-up

methodology

›Single-button test that is

8x faster and guarantees

first-time-right results

PUTTING INTELLIGENCE INTO LTE ROLLOUTS

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Worldwide Customer Base

Network Equipment Manufacturers

22 © 2013 EXFO Inc. All rights reserved..

Worldwide Customer Base

Network Service Providers

Thank you for your time!