ITU IMT-2000 Seminar
Warsaw, October 2001
ON OPTIMIZATION OF 3G CELLULAR
SYSTEMS DEPLOYMENT
Prof.dr Milica Pejanovic
University of Montenegro, Podgorica, Yugoslavia
E-mail: milica@cg.ac.yu
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
EVOLUTION OF CELLULAR SYSTEMS
'80s
Initial stage
'90s
Growing stage
DIGITAL
'2000s
Expansion stage
IMT-2000
Matured stage
4thgeneration
AMPS, NMT, NTT...
(1st generation)
GSM, PDC, IS-95
(2nd generation)
Mobile
Data
<300bps
9.6k-64 kbps
(packet)
64k-384 kbps
2Mbps (indoor)
2 Mbps
20 Mbps (best effort
indoort)
PSTND
ata
28.8bps
64 kbps
Up to 1 Mbps
(Flat rate)
Up to 20 Mbps ??
(3rd generation)
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
2
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
WORLDWIDE DISTRIBUTION OF CELLULAR STANDARDS
Europe
US
Japan
AMPS
NMT450
RMTS
RC2000
C450
NMT900
NAMTS
TACS
E
TACS
NMT450i
Analog (1G)
Digital
DAMPS
IS-54
GSM
2G
HSCSD
2+G
DCSI800
PDC
PCS
UWC-136
PHS
USDC
GPRS
PCS
1900
EDGE
3G
CDMA
IS-95
UMTS
IMT-2000
?
3+G
Under standardization
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
3
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
DEVELOPMENT TRENDS IN WIRELESS STANDARDS
Mobility
2000
2010
2020
ITS
3rd
Generation
Vehicle
HAPS
GSM
Pedestrian PDC IMT-2000
PHS
Office
2nd
Generation
N-ISDN
10k
Wireless
Access
B-ISDN
2M
4th
Generation
5th
Generation
Milli-wave
LAN
Optical fiber networks Gigabit-net
50M
155Mb/s
600Mb/s
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
4
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
TARGETED FEATURES OF 3G NETWORKS
3G networks should provide access, by means of one or more radio links, to a wide
range of telecommunications services supported by the fixed telecommunication
networks (e.g. PSTN/ISDN/IP), and to other services which are specific to mobile
users.
Key features of such wireless cellular systems should be:
•
•
•
•
•
•
•
high degree of commonality of design world-wide;
compatibility of services within 3G standards and with the fixed networks;
high quality;
small terminal for world-wide use;
world-wide roaming capability;
capability for multimedia applications, and a wide range of services and terminals;
support of a limited number of different radio interface technologies within
the 3G family.
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
5
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
COMPARISON OF 2G AND 3G CELLULAR SYSTEMS
System Aspects
Use of digital technology
Commonality between
different operating
environments
Frequency bands
Data services
Roaming
Technology
Radio interfaces
Data speed
Existing 2 G
Mobile Systems
Already used for modulation, speech and
channel coding as well as implementation
and control of data channels
Each systems is primarily optimised for
its specific operating environment
Operate in frequency bands ranging from
800 MHz to 1.9 GHz, depending on the
country
Limited to data rates below 115 kb/s
(WAP-GRPS-SMS)
Generally limited to specific regions,
Handsets not compatible between
different systems
Spectrum efficiency, cost and flexibility
limited by technology in use at time of
system design
TDMA, CDMA
9.6 kb/s with evolution up to 171.2 kb/s
(2.5 G)
New 3 G
IMT-2000 Systems
Increased use of digital technologies
Optimisation of radio interfaces for
multiple operating environments
such as vehicular, pedestrian, introoffice, fixed wireless access and
satellite, via a single flexible or
scalable radio interface.
Use a common global frequency
band
Transmission speeds up to 2 Mb/s
Global frequency coordination and
ITU standards will provide true
global roaming and equipment
compatibility
Spectrum efficiency, flexibility and
overall costs all significantly
improved.
W-CDMA
144 kb/s – 2 Mb/s
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
6
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
LAYERED ARCHITECTURE OF 3G NETWORKS
Applications
Applications
Service
User data
Service and applications
Control
Support
servers
HLR
Support
servers
MSC
server
AAA H
GW/MSC
server
Control
MGW/
PDSN
PSTN/
ISDN
MGW
Router
Connectivity
Wireless
access
Internet/
Intranet
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
7
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
OVERVIEW OF 3G STANDARDIZATION BODIES
ITU
IMT-2000
ITU-R
Radio aspects
ITU-T
Network aspects
Ongoing
Collaboration
3 GPP
WCDMA + GSM
Others:
UWC - 136
DECT
TD-CDMA
3 GPP2
cdma2000 + ANSI-41
Operators Harmonization
Group
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
8
On optimization of 3Gcellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
OPERATORS HARMONIZATION AGREEMENT
Radio access
- family of 3G
CDMAmodes
WCDMA
FDD mode 1
direct sequence
cdma2000
Unpaired spectrum
FDD mode 2
multicarrier
TDD mode
Flexible connection between RTT
modes and core networks based on
operators' needs
Core network
- family of 3G
systems
Core network
- 3G inter-family
roaming
Evolved
GSM/MAP
Evolved
ANSI-41
Network-to-network
interface
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
9
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
3G RADIO INTERFACE STANDARDIZATION
Europe
FDD:W-CDMA
TDD:TD-CDMA
W-TDMA
TD-CDMA
W-CDMA
UMTS/W-CDMA
Japan
W-CDMA
CDMA
US
Wideband
Cdma 2000
TDMA
UWC - 136
1996
1997
1998
1999
2000
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
10
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
IMT-2000 TERRESTRIAL RADIO INTERFACES
IMT - 2000
IMT-DS
CDMA
IMT-MC
IMT-TC
IMT-SC
TDMA
IMT-FT
FDMA
IMT-DS (Direct Spread)=W-CDMA (FDD)
IMT-MC (Multi Carrier)=cdma 2000
IMT-TC (Time-Code)=UMTS TDD, TD-SCDMA
IMT-SC (Single Carrier)=UWC-136
IMT-FT (Frequency Time)=DECT
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
11
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
MIGRATION SCENARIOS TOWARDS 3G NETWORKS
2G
2.5G
TDMA
3G
IS-136B/HS
GPRS
UWC-136
EDGE
GPRS
EGPRS
GSM
HSCSD
UMTS
CDMA 2000
3GPP
ECSD
TD-CDMA OHG
IMT2000
3GPP2
1 EXTREME
HDR
CDMA one
IS-95
IS-95B
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
12
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
EVOLUTION OF THE IS-95 AIR STANDARD
• IS-95-A
– Standardized by Telecommunications Industry Association (TIA) in July 1993.
Networks utilizing IS-95 CDMA air interface and ANSI-41 network protocol are
branded as cdmaOne networks. IS-95 networks use one or more 1.25MHz carriers,
operate on 800 and 1900MHz bands. Data rates of up to 14.4kb/s and soft handoffs
are supported.
• IS-95-B
– Improvements for hard-handoff algorithms in multicarrier environments and in
parameters that affect the control of soft handoffs. Higher data rates of up to
115kb/s can be supported by bundling up to eight 14.4 or 9.6 kb/s data channels.
• Cdma2000
– Developed to support 3G services. This standard is divided into two phases:
• Cdma2000 1X – 1X stands for standard carrier (1.25MHz) at air interface. It delivers
twice the voice capacity of cdmaOne with average data rates of 144kb/s.
• Cdma2000 3X – 3X stands to signify 3x1.25MHz with data rates of up to 2Mb/s
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
13
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
TIMELINE FOR EVOLVING CDMA TO 3G CAPABILITIES
Media gateways
MSC servers
Layered
architecture
High-speed data
International roaming
cdma2000 3X/
DS-41 RBS
ATM and IP
backbone
cdma 2000 1x
RBS 3G BSC
PCN
Advanced voice/data
services
mobile IP/secure data
Jambala WAP
and HLR IWF
MSC
Efficient data delivery
Advanced user features
High reliability
ATM switches
IP routers
Capacity and coverage
expansion
Low cost
IOS BSS
4Q99
2Q00
1H01
2H02 2H03
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
14
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
EVOLUTION OF THE TDMA AIR STANDARD
• TDMA (TIA/EIA-136)
– This standard includes EIA-553 and IS-54 systems
• IS-136HS
– For satisfying requirements for IMT-2000, the Universal Wireless Communication
Consortium (UWCC) proposed the 136 High-Speed (136HS) radio interface.
• EDGE (Enhanced Data Rates for GSM Evolution)
– In January 1998, UWCC adopted EDGE as outdoor component of 136HS. EDGE
was thus included in UWC-136 IMT-2000 proposal. It provides 384 kb/s data
services and comprises two phases:
• Phase I emphasizes enhanced GPRS (EGPRS) and enhanced circuit-switched data
(ECSD)
• Phase II is defined to include improvements for multimedia and real-time support
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
15
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
Model for an EGPRS/136 network integrated into a TIA/EIA-136 circuitswitched network through an SGSN gateway MSC/VLR
ANSI-41
HLR/AC
C-D
N
C-D
E
ANSI-41
Serving
MSC/VLR
M
Q
ANSI-41
Gateway
MSC/VLR
ANSI-41
MC/OTAF
Signaling interface
Signaling and
data-transfer
interface
SME
C
SMS-GMSC
SMS-IWMSC
GPRS
HLR
Gs
SM-SC
Gd
Gr
Um
R
TE
MT
Gc
Gb
BSS
SGSN
TE
GGSN
Gi
Gn
Gn
PDN
Gf
Gp
EIR
SGSN
GGSN
Other PLMN
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
16
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
EVOLUTION OF THE GSM AIR STANDARD
• GSM (Global System for Mobile Communications)
• GSM + standard
– Enables packet mode extensions to GSM using the same air interface but with a
new physical channel. It could be done through the following three possibilities:
• HSCSD (High Speed Circuit Switched Data Service)
• GPRS (General Packet Radio Service) (and EGPRS)
• EDGE
• UMTS (Universal Mobile Telecommunications System)
– European version of IMT-2000 which is composed of a core network (CN)
connected with interface (Iu) to the radio access network called the UMTS
Terrestrial Radio Access Network (UTRAN). This standard supports W-CDMA in
two versions:FDD (frequency-division duplex) and TDD (time-division duplex).
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
17
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
GPRS ARCHITECTURE
Radio Subsystem
Switching Subsystem
Base Station Subsystem
BSS
GR
MSC
Gs - Interface
BTS
Gr - Interface
MS
BSC
SGSN
GGSN
Gn - Interface
Gj - Interface
MS
Gp - Interface
BTS
Other PLMN
PDN
BSC
SSGR – Serving GPRS Support Node
MS
Radio Interface
Gb - Interface
BTS
GGSN- Gateway GPRS Support Node
Abis - Interface
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
18
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
COMPARISON OF GSM + STANDARDS
Name
HSCSD
Max.
Bandwidth
(kbit/s)
57.6
Circuit-switched
packet-switched
CS
HW-Upgrade
Required?
Typical
Application
Environment
No
Rural and urban,
mobile and
stationary
GPRS
115
PS
Yes
Mostly urban,
mobile and
stationary
EDGE
384
PS+CS
Extensive
Urban,
mostly stationary
Pro’s and Con’s
+ Available now
- Expensive for subscriber
++ Being online
permanently
++ Charging based on
volume
++ Top speed
-- Extensive HW-upgrade
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
19
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
UMTS (3GPP) ARCHITECTURE RELEASE ’99 (R3)
This release supports WCDMA access and ATM-based transport
Core net
Um
GSM
RSS
Gb
IP
Gi
E-SGSN
IP
E-GGSN
Packet domain
lu-ps
MS
HLR
Radio
A
E-VMSC
Uu
UTRAN
STM
E-GMSC
PSTN ISDN
Circuit domain
lu-cs
Transport
Control
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
20
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
UTRAN ARCHITECTURE
CN
Iu
Iu
RNS
RNS
Iur
SRNC
DRNC
CRNC
Iu b
Iu b
Node B
CRNC
Node B
Iu b
Iu b
Node B
Node B
Node B
Node B
Uu
Uu
UE
UTRAN – UMTS Terrestrial Radio Access
Network
RNS – Radio Network Subsystems
RNC- Radio Network Controller
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
21
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
UMTS R3 is composed of the UTRAN attached to two separate core
network domains:
•
Circuit switched domain based on enhanced GSM MSCs consists of the
following network elements:
– 2G/3G mobile-services switching center including the VLR functionality
– HLR with AC (Authentication Center) functionality
•
Packet switched domain built on enhanced GPRS support nodes consists of:
– 2G/3G serving GPRS support node with subscriber location register
(SGR) functionality
– Gateway GPRS support node (GGSN)
– Border gateway
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
22
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
UMTS (3GPP) ARCHITECTURE RELEASE 00
It is split into R4 (00) and R5(00+) defining two RAN technologies:
GPRS/EDGE radio access network (GERAN) and W-CDMA as in R3
Legacy mobile
signalling Network
Applications &
Services*)
Alternative Access
Network
R-SGW*)
SCP
Ms
Other PLMN
SGSN
GGSN
Gn
Gp
CAP
Cx
HSS*)
Gr
R
TE
MT
R
TE
GERAN
lu-ps
lu
UTRAN
lu1
Um
Uu
MT
Mr
Gi
Gi
PDN/ Internet
Gi
Gn
GGSN
Nb
MGW
PSTN/ Legacy/
Externat
Mc
lu 2
lu1=lucs(RTP,AAL2)
lu2=lu(RANAP)
T-SGW*)
MGCF
MRF
MGW
Multimedia IP
Networks
Mg
CSCF
SGSN
Mm
Nc
MSC server
GMSC
server
T-SGW
Signalling interface
Signalling and Data Transfer interface
*) those elements are duplicated for figure layout purpose only,
they belong to the same logical element in the reference model
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
23
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
EVOLUTION PATHS FOR MIGRATION TO UMTS R5
CSCF
MGCF
MRF
lu-ps
IP
E-MPSN
Gi
UTRAN
E-SGSN
E-GGSN
IP
IP
Gi
MGW
PSTN/ISDN
lu-ps
MGW
VoIP/VoATM
MGW
lu-cs
VMSC server
GMSC server
R5 introduces All-IP environment including:
•Transport: utilization of the IP transport and connectivity
with QoS throughout the network
•End-user services: with Session Initiation Protocol (SIP)
possibilities to offer wide range of totally new services
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
24
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
GSM MIGRATION PHASES
2G
2.5G
GSM
GPRS
MAP
MAP
3G R99(R3)
3G R00 (R4)
3GR00+ (R5)
UTRAN
W-CDMA
CORE
PS Domain - Data
CS Domain - Voice
IP RAN
MSC split un Server
and Gateway
CAMEL Ph3
SS7 over IP
IP Multimedia services
New entities in the Core
SIP Call Model
CAMEL Ph4
Phase 1 - GSM CS Voice and Data
Phase 2 - GPRS Overlay Network
Phase 3 - UMTS R99
Phase 4 - All IP UMTS R00
Phase 5 - IP Multi-media (IM)
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
25
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
MIGRATION OF GSM TO UMTS
GSM Phase 2
GSM Phase 2+
UMTS
Multiple access
FDMA/TDMA
FDMA/TDMA
TDMA/CDMA
Max. bit arte
9.6 kbit/s
64 kb/s; 115kb/s
384 kb/s; 2 Mb/s
Speech
quality
Full rate (FR)
Enhanced full rate (EFR), transcoder
free operation (TFO)
Adaptive multirate (AMR)
Capacity
900 MHz
Tri-band (900, 1800, 1900 MHz)
2000MHz, spectrum efficiency
Roaming
International roaming
Global roaming
Seamless global roaming in
multiradio environments and
applications areas
Authentication, encryption
Fraud information gathering, SS7
security, lawful interception (LI)
Enhanced authentication and
user identity confidentiality,
network domain security
Bearers
Circuit-switched bearers
64 kbit/s circuit bearer, packet bearers by
General Packet Radio Service (GPRS)
Circuit- and packet-switched
bearers, real-time packet bearer
Services
Speech and low-speed circuitswitched data, supplementary
services, short message
service
Service customization, service
portability, value-added services, mobile
Internet access, and Web-like
information service
Full Internet capability, speech,
data, multimedia, virtual home
environment (VHE)
Security
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
26
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
DEPLOYMENT STRATEGIES FOR 3G SYSTEMS
When choosing an adequate approach in 3G systems deployment, the
following elements have to be considered:
–
–
–
–
–
network type (private-public),
coverage (local-global),
mobility (low-high),
data traffic (low-high),
types of services (basic-multimedia).
Thus, two approaches may be identified:
Scenario 1 – innovative, applied through implementation of the
completely new 3G network
Scenario 2 – evolutionary, applied through migration (upgrade) of
already existing 2G or 2G+ network
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
27
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
DEPLOYMENT SCENARIO No.1
In this type of scenario the following versions may appear:
!
SCENARIO No.1(a): All-round
3G network is implemented where no 2G network exists both in terms of
deployment area and the transmission rate
! SCENARIO No.1(b): Complement
3G network is implemented in the region with already existing 2G network(s)
in a way that it could be:
• Area-complement – 3G covers the whole range of the transmission
rate and is located in the position not covered by 2G networks in the
terms of the deployment area
• Rate-complement – 3G covers the whole range of the deployment
area and is located in the position not covered by 2G networks in terms
of the transmission rate.
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
28
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
COMPARISON OF SCENARIOS No.1(a) AND No.1(b)
All-round-type
scenario
Complementtype scenarios
Higher rate
Network interface
From lower to higher
rates
From
static
to
cellular mobility
From pico to macro
cells
If necessary
System roaming
If necessary
Indispensable
Radio interface
Single
Multiple
Mobile terminal mode
Single
Multiple
Security
Whole system
Core network
Billing/charging
Unified system
Multiple systems
Core network
Customized
Transparent
Service provider
Single
Multiple
Overlap
Complement
Transmission bit rate
Mobility
Deployment Area
2G, 3G and
mobile systems
other
Cellular mobility
Micro and macro
cells
Indispensable
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
29
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
DEPLOYMENT SCENARIO No.2
There are two possible ways for mobile operators to migrate from 2G
(2G+) to 3G:
! Scenario No.2(a): Existing 2G or 2G+ core network could be upgraded
for 3G use. In this case 2G and 3G networks share
the same core infrastructure.
! Scenario No.2(b): Independent 3G core network could be implemented
completely independent from the existing 2G core
infrastructure.
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
30
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
SCENARIO No.2 (a) – COMMON CORE NETWORK FOR 2G AND 3G
UMTS
BS
UMTS
BS
UMTS TE
IN Platform
Iub
Iu
UMTS
RNC
ISUP
BTS
A
Iu
GSM
BTS
GSM/GPRS
TE
Camel
MSC/VLR
Abis
Map
HLR
GSM
BSC
GSM
BTS
Gb
Map
BTS
GSM
BTS
BTS
Internet
Gi
GSM
BTS
GSM TE
ISDN
Abis
Gn
GSM
BSC
RAN Subsystem
A
Internet
SGSN
GGSN
CN Subsystem
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
31
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
SCENARIO No.2 (b) – INDEPENDENT 2G AND 3G CORE NETWORKS
UMTS
BS
GSM/GPRS
TE
BTS
HLR
A
GSM
BSC
Map
Gb
GSM
BTS
ISUP
3G SGSN
BTS
GSM TE
Camel
ISDN
Abis
GSM
BTS
GSM
BTS
3G MSC/VLR
Iu
BTS
GSM
BTS
Iu
UMTS
RNC
UMTS
BS
UMTS TE
ISUP
Iub
2G MSC/VLR
Gi
Internet
Gn
Abis
GSM
BSC
RAN Subsystem
A
Internet
Gn
2G SGSN
GGSN
CN Subsystem
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
32
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
IMPACTS OF SCENARIOS No.2 ON EXISTING 2G NETWORKS
SCENARIO No.2(a):
•
–
–
–
Re-dimension of the existing core network to be able to support 3G broadband
services
Optimize transmission network for a suitable traffic mix
Network management system
SCENARIO No.2(b):
•
–
2G and 3G networks have minimum impact on each other
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
33
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
OPTIMAL SCENARIO No.2 IMPLEMENTATION
Voice (Existing GSM Network)
Deploy fully switched
Virtual Transit Network
with SS7 interworking
Data
Deploy GPRS
Network
Deploy IP Core
Migrate Internal
IT infrastructure
Deploy 3G
Access & Core
Common IP Core
Network for voice&data
services
Common Core Based on
MPLS
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
34
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
Abbreviations
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3GPP - Third generation partnership project
AAA - Authentication, authorization and accounting
AC
- Authentication center
AMPS - Advanced mobile phone service
ANSI - American National Standards Institute
ATM - Asynchronous transfer mode
BSC - Base station controller
BSS - Base station subsystem
BTS - Base transceiver station
CDMA - Code division multiple access
CN
- Core network
CSCF - Call state control function
CRNC - Controlling part of RNC
DECT - Digital Enhanced Cordless Telephone system
DRNC - Drift RNC
EGPRS - Enhanced GPRS
EIR
- Equipment identification register
E-SGSN- Enhanced SGSN
E-GGSN-Enhanced GGSN
E-VMSC-Enhanced visited MSC
E-MPSN- Enhanced mobile packet service node
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
35
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
Abbreviations
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FDD - Frequency division duplex
GERAN- GPRS radio access network
GGSN - Gateway GPRS support node
GMSC - Gateway MSC
GPRS - General packet radio service
GSM - Global system for mobile communication
HLR - Home location register
HSCSD- High-speed circuit switched data service
IP
- Internet protocol
IWF - Interworking function
IWMSC- Interworking MSC
MAP - Mobile application part
MGW - Media gateway
MGCF - Media gateway control function
MPLS - Multi protocol label switching
MS
- Mobile subscriber
MT
- Mobile terminal
PDC - Personal digital cellular system
PDSN - Packet data service node
PHS - Personal handyphone system
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
36
On optimization of 3G cellular systems deployment
ITU IMT-2000 Seminar, Warsaw, October 2001
Abbreviations
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RAN - Radio access network
RNC - Radio network controller
RNS - Radio network subsystem
SCP - Service control point
SGSN - Serving GPRS support node
SIP
- Session initiation protocol
SMS - Short message service
SRNC - Serving RNC
STM - Synchronous transfer mode
TDD - Time division duplex
TDMA - Time division multiple access
TE
- Terminal equipment
UE
- User equipment
UMTS - Universal mobile telecommunication system
UTRAN-UMTS terrestrial radio access
UWC - Universal wireless communication system
VLR - Visitor location register
WAP - Wireless application protocol
WCDMA-Wideband CDMA
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia
37