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CONTEST. Mobile broadband network principles EBU workshop May 12 th 2011 Stein Erik Paulsen Radio Technology Manager Corporate Development Telenor [email protected] CONTENTS. Why use indoor antennas?. How can capacity be increased?. How to avoid interference?.

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Slide1 l.jpg

CONTEST

Mobile broadband network principlesEBU workshop May 12th 2011Stein Erik PaulsenRadio Technology ManagerCorporate Development

Telenor

[email protected]


Contents l.jpg
CONTENTS

Why use indoor antennas?

How can capacity be increased?

How to avoid interference?

What about the future?

Why do we need so much spectrum?

How to build a mobile network?


Slide3 l.jpg

Radio access network evolution

-The journey has just started



Ericsson l.jpg
Ericsson:

In 3 years network traffic has increased by a factor of 10…

…and revenue increased by 35%...



Slide7 l.jpg

The base stations (BTS) are distributed to give RADIO COVERAGE

En


Slide8 l.jpg

The base stations (BTS) are distributed to give RADIO COVERAGE – and Capacity

En


Increased traffic drives cost l.jpg

Start-up cost

Smaller spectrum

Larger spectrum

Increased traffic drives cost

Network

cost

Challenge!

Phase 1: Coverage

limited network

Phase 2: Capacity

limited network

Requested traffic


The challenge of mobile broadband l.jpg

$

COST

Revenue

Traffic

The challenge of mobile broadband


With boosting data traffic there is a need for more frequent network updates than before l.jpg

LTE

HSPA+

HSPA

Basic 3G

= Resulting network cost

With boosting data traffic there is a need for more frequent network updates than before

Network cost

Traffic load


Limited spectrum drives cost example two operators with very different spectrum size l.jpg
Limited spectrum drives cost!Example: Two operators with very different spectrum size

  • Country 1: 8,8MHz band ->44 channels

    • =>132 Erlang per base station

    • => 40 base stations needed to handle total traffic of 5190 Erlang

  • Country 2: 4,4 MHz band -> 22 channels

    • =>29 Erlang per base station

    • => 179 base stations needed to handle total traffic of 5190 Erlang

      => Having only half of the spectrum can mean 4,5 times the cost.

Area= 50km2

Population= 1 M

Subscribers= 346k

15 mErl/sub (*)

Tot. traffic= 5190 Erl

(*) Meaning that the average customer calls for 1,5% of the most busy hour of the day

For illustration purpose only – the conclusions and calculations are simplified


Frequency spectrum for mobile communication l.jpg

Getting more spectrum essential for meeting future service demand

Frequency spectrum for mobile communication

Digital Dividend

3G

(UMTS2100)

CDMA

Mobile broadband

extension band

GSM900

GSM1800

1500 MHz

500 MHz

1000 MHz

2000 MHz

2500 MHz

3000 MHz


3g in new frequency bands refarming l.jpg
3G in new frequency bands - refarming demand

(WCDMA = UMTS/HSPA = 3G)

(HSPA)

In-Building coverage area for suburban terrain

(Source: Nokia Siemens Networks & Elisa)


Access to low frequency spectrum high impact on mobile broadband l.jpg

2600 demand

MHz

900

MHz

Access to low frequency spectrum: -High impact on mobile broadband

  • Profitable coverage even outside the urban areas

  • Potential for saving 50-70% of site costs


Digital dividend band a desire and a curse too little of something good can be bad l.jpg
Digital Dividend band: A desire and a curse: demandToo little of something good can be bad!

800 MHz

2600 MHz

11%

800 MHz:

Very attractive for coverage, but how to avoid traffic congestion if 89% of all users only have coverage from the 800 MHz system?

=> A fair amount of low-frequency spectrum per operator is a prerequisite.


Network capacity is hard to predict l.jpg

10 Mbit/s demand

7.5 Mbit/s

5 Mbit/s

2.5 Mbit/s

10 Mbit/s

1 Mbit/s

0.5 Mbit/s

5 Mbit/s

0.2 Mbit/s

2 Mbit/s

0.05 Mbit/s

0.5 Mbit/s

Network capacity is hard to predict

Total

Capacity


Growing need for indoor coverage systems l.jpg
Growing need for indoor coverage systems demand

  • Urban building walls block 99% of the outdoor signal

  • Safe to re-use the same carriers indoors

  • Buildings with heavy data traffic: Use indoor antenna systems, WiFi or femtocells

  • Need fixed broadband lines to provide connection and offload mobile network


The future l.jpg
The future demand




Slide22 l.jpg

LTE is defined for all relevant frequency bands demand

Digital Dividend

3G

(UMTS2100)

CDMA

Fixed

WiMAX

Mobile WiMAX/

3G extension band

EDGE900

EDGE1800

Mob.

WiMAX

1500 MHz

500 MHz

1000 MHz

2000 MHz

2500 MHz

3000 MHz

3500 MHz

LTE

LTE

LTE

LTE

LTE

LTEAdv.

LTE

High Frequency

Short range

Low Frequency

Long range


Evolution in site capacity from gsm to lte downlink sum of voice and data l.jpg
Evolution in site capacity from GSM to LTE demand- Downlink, sum of voice and data

Disclaimer: Values should be taken as indicative. Performance will vary greatly with deployed solution, surrounding environment, terminal penetration and size of frequency spectrum. HSPA assumes 14,4 Mbps version. HSPA+ assumes 64QAM feature, not MIMO or Dual Carrier.

Source: CONTEST, Telenor.


Competitive power determined by spectrum l.jpg
Competitive power demand-Determined by spectrum

LTE deployment strategy must be tuned to our relative ability to compete.

2600 MHz

10 MHz

2600

20 MHz

800 MHz

Fakecom



Key take aways l.jpg
Key take-aways demand

  • Convergence: Usage and interactions between mobile and fixed networks will continue to grow to ensure optimum service offerings

  • Cost curves: Mobile technologies are much less suited for flat-rate subscriptions than fixed broadband technologies

  • Hybrid networks: Operators need to utilize more than one mobile technology to secure cost-effective deployments

  • Mobile Broadband: Mobile networks keep offering higher data rates but within limited coverage range, especially indoor

  • Indoor coverage: Indoor mobile broadband users represent majority of the traffic and should to a larger extent be connected via indoor antenna solutions.

  • New spectrum: Mobile Broadband at low frequencies is a cost-effective solution for areas with lower population density, as long as a healthy traffic balance is maintained.


Lte customers expect high performance l.jpg
LTE: demandCustomers expect high performance





Abbreviations l.jpg
Abbreviations demand

BSC Base Station Controller

BSS Base Station Subsystem

BTS Base Transceiver Station

CDMA Code Division Multiple Access

CSD Circuit Switched Data

CN Core Network

D-AMPS Digital-Advanced Mobile Phone System

EDGE Enhanced Data rates for GSM Evolution

E-GPRS Enhanced - GPRS

ERAN EDGE Radio Access Network

ETSI European Telecommunications

Standards Institute

FDD Frequency Division Duplex

FDD-DS Frequency Division Duplex –

Direct Spread

FDD-MC Frequency Division Duplex - MultiCarrier

GGSN Gateway GPRS Support Node

GERAN GSM EDGE Radio Access Network

GMSK Gaussian Minimum Shift Keying

(Modulation)

GPRS General Packet Radio System

GSM Global System for Mobile

communication

HLR Home Location Register

HSCSD High Speed Circuit Switched Data

IN Intelligent Network

IP Internet Protocol

ISDN Integrated Services Digital Network

ITU International Telecommunication Union

IMT-2000 International Mobile Telecommunication

MSC Mobile Switching Center

PLMN Public Land Mobile Network

PSK Phase Shift Keying (Modulation)

PSTN Public Switched Telephone Network

RNC Radio Network Controller

SCP Service Control Point

SGSN Serving GPRS Support Node

TDD Time Division Duplex

TDMA Time Division Multiple Access

UMTS Universal Mobile Telecommunications

System

UTRAN UMTS Terestrial Radio Access Network

VHE Virtual Home Environment

VLR Visitor Location Register

VoIP Voice over Internet Protocol

WAP Wireless Application Protocol

W-CDMA Wideband -CDMA

2G 2nd Generation (mobile network)

(2,5G GPRS)

3G 3rd Generation (mobile network)

3GPP 3rd Generation Partnership

Project


Sites btss and cells l.jpg
Sites, BTSs and cells… demand

  • A SITE is the physical location of which a base station is placed. Includes all equipment put up by the operator (mast, antennas,cabin, base station rack etc.)

  • A BTS is the base transceiver station, normally just called base station, i.e. the cabinet(s) containing the 1-3 cells belonging to a site.

  • A NodeB is the term used for BTS in UMTS

  • A CELL is each uniquely identified GSM or UMTS capacity source in a BTS or NodeB, defined by its own coverage footprint (or coverage cell)

  • A TRX is a single transmitter/receiver unit able to provide one single GSM frequency to the cell’s coverage footprint. Each cell has 1-12 TRXs depending on the capacity need.


Slide33 l.jpg

Typical user data rates demand

LTE-

Advanced

30 – 300 Mbit/s

LTE

5 – 60 Mbit/s

HSPA

1.0 – 5 Mbit/s

3G basic

150-350 kbit/s

100 kbps

1 Mbps

10 Mbps

100 Mbps


Target for the network evolution all ip broadband network l.jpg
Target for the network evolution: demandAll IP broadband network


Slide35 l.jpg

Fixed network demand

Authentication

Subscriber profiles

Service Platform

Core Network

Charging

Media Gateway

Intelligent Network

C o r e

T r a n s p o r t

I n t e r n e t

Packet Switch Gateway

Base Station

Control

Packet Switch Serving Node

Transport Network

B a c k h a u l

Base station

Radio / Access Network

network domain

user domain

Marie

Anne

Basic network interfaces


Cost distribution in mobile networks l.jpg

MSC demand

BSC

ISP internet

connection

Hub

Core

Access network

Backbone network

MGW

CAPEX share for

greenfield voice

30%

20%

50%

CAPEX share for greenfield MBB

10%

45%

45%

Cost distribution in mobile networks

Core & Backbone network

Transport network

Radio Access network

BTS

BTS

m*E1

n*E1

E1

BTS

Backhaul


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