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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