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MobileCommTechnologies India Pvt. Ltd.

Dallas . Atlanta . Washington . LA . Sao Paulo . New Delhi . Toronto. Muscat.Sydney

Introduction to UMTS


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Copyright 2010MobileComm Technologies India Pvt. Ltd.

All rights reserved MobileComm is committed to providing our customers with qualityinstructor led

Telecommunications Training.

This documentation is protected by copyright. No part of the contents of this

documentation may be reproduced in any form, or by any means, without the prior writtenconsent ofMobileComm Technologies .

Document Number: RK/CT/3/2010

This manual prepared by: MobileCommTechnologies

MobileComm Technologies(India)Pvt. Ltd.424, First Floor, Udyog Vihar Phase -4,

Gurgaon-122002

Headquarter:MobileComm Professionals Inc.1255 West 15th Street, Suite 440

Plano, TX, 75075Tel: (972) 633-5100Fax: (972) 633-5106

www.mcpsinc.com
http://www.mcpsinc.com/http://www.mcpsinc.com/


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Understand why 3G was created

Different services in 3G

How QoS is ensured by 3G

Objectives

At the end of this session, you will be able to:

Introduction


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Mobile Network Evolution

1G

Analogue

2G

Digital

2.5G

Packet Data

2.75G

Enhanced Data

NMT

TACS

AMPS

GSM

CDMA

IS-95

GPRS

EDGE

CDMA 1X

WCDMA

TD-SCDMA

cdma20001X EV-DO

2M, 14M

2M

2.4M

384K

144K

1982-1996+ 1992-2002+ 2001+ 2004+ 2002-2004+

115K

3G

Real time Data


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Universal global roaming

Multimedia (voice, data & video)

Increased data rates

384 kbps while moving

2 Mbps when stationary at specific locations

Increased capacity (more spectrally efficient) IP architecture

3G Vision


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A Third Generation of Mobile Systems: What for?


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3G Applications

Wireless Internet

Audio on demand

Electronic postcards

Video conferencing

Secure mobile commerce transactions

Traffic and travelling information- location specific


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High speed data transmissions

Symmetrical and asymmetrical data transmission support

Improved voice quality

Greater capacity

Multiple simultaneous services

Global roaming across netwroks

Improved security

Service flexibilty

3G Capabilities


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2 Mbit/s 384 kbit/s 144 kbit/s

Indoorlow mobility

Urbanreduced mobility

Rural outdoorhigh mobility

3GPP Objectives


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Modulation

Voice signals are of low amplitude strength with low frequency (20 Hzto 20 KHz).

To send the signal up to longer distance Modulation is required. Modulation is the process of varying the characteristics of high signal

(carrier) in accordance with instantaneous value of low signal(Modulating signal).

Depend on the Modulation: three types of Modulation schemes areintroduced. 1) Amplitude Modulation 2) Frequency Modulation 3) Phase Modulation

GSM works also on Modulation scheme (GMSK) used to modulate highcarrier of 900 MHz signal by low carrier signal (human voice). WCDMA works on Modulation scheme (BPSK & QPSK) used to

modulate high carrier of 900 MHz signal by low carrier signal (humanvoice).


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WAVE LENGTH

Radio signals travel through space at the Speed of Light

C = 3 * 108 meters / second

Frequency (F) is the number of waves per second (unit: Hertz)

Wavelength () (length of one wave) = (distance traveled in one second)

(waves in one second)

= C / F

If frequency is 900MHZ then

wavelength = 3 * 108 /2100* 106

= 0.143 meters


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Mobile Networks and Data Services

2G Mobile

3G (UMTS)3.5G or 3G+ (HSDPA and HSUPA)

2.5G (GPRS)2.75G (EDGE)

3G Mobile

LTE

WiMAX

HSDPA

UMTS

EDGE

GPRS 160kbps

384Kbps

2Mbps *

14.4Mbps *

75Mbps *

100Mbps ? *

* : Per cell bandwidth (not per user)WiMAX ("3G" or "4G" depending on manufacturer)

Future: 4G (LTE)

HSUPA 5.7Mbps *

Maximum Theoretical Bandwidth


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Service Classes Example


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UMTS Service class

NRT Data Call

Background Class

PS Data Call

Interactive Class

PS Data Call

Streaming Class

PS Data Call

Conversational Class

CS Data Call

CS Data Call CS Voice Call

CS Call

RT Data Call

PS Call

Call

f d ff


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Comparison of different services

UMTS N t k St t


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UMTS Network Structure

GSM /GPRS BSS

BTS

BSC

PCU

SS7

SCP

SMS

SCE

PSTN/other PLMN

Internet,

Intranet

MSC/VLR GMSC

HLR/AUC

SGSN

CGBG

GGSN

PS backbone

Other PLMN

CS domain

PSdomain

NodeB

RNC

UTRAN

Iu-CS

Iu-PS

A

Gb

GERAN

WCDMA I t f


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WCDMA Interfaces

A Interface

A-bis

Um

MSC

BSC

BTS

MS

SGSN

Gb

GSM

Iub

Uu

MSC

RNC

NodeB

UE

SGSN

Iu-PSIu-CS

Iub

Uu

RNC

NodeB

UE

Iur

WCDMA

UTRANBSS

GERAN


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Radio Network Interfaces

Iu Iu PS

Connection to the packet switched core network domain

SGSN/GGSN

Iu CS

Connection to the circuit switched core network domain

MSC

Iur RNC interconnection

[eg: for SHO support ] Iub

Connection for the RBS to the RNC

Uu Air Interface to the UE

Core Network

RNC

RNC

Iu

Iur

Iub

UuNode

B

NodeB

NodeB

UE

Documents

00. Introduction to UMTS Done