ITU Seminar on IMT-2000
Ljubljana, December 2003
AN OPTIMIZED APPROACH IN 3G
MOBILE SYSTEMS DEPLOYMENT
Prof. dr Milica Pejanovic
University of Montenegro, Podgorica, Serbia&Montenegro
milica@cg.ac.yu
ITU Seminar on IMT-2000, Ljubljana, December 2003
Characteristics of cellular systems development
Ø Since its inception the cellular system
§ Experienced enormous growth
Ø Need for high rate data capacity
§ Recognized by various standards bodies
Ø Efforts in way to add additional data rate capabilities to existing
cellular standards
§ GSM (GPRS, EDGE)
§ IS-95A (IS-95 B)
§ IS-136 (GPRS, EDGE)
Ø Needs are becoming more data centric
§ Need internet capable connection
§ e-mail, short message services
§ web browsing
Ø Connection becoming more and more packet switched
2/12/2003
Prof.dr Milica Pejanovic, University of
Montenegro
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ITU Seminar on IMT-2000, Ljubljana, December 2003
Why not 2G anymore?
Ø 1G and 2G systems were developed
§
§
§
§
to accommodate mainly voice services
2G added the limited data capabilities
applications were voice centric
utilized the circuit switched connection
Ø Very limited roaming
§ communication any where, any time still far from reality
§ Localized standards inhibits global roaming and seamless communication
• North America (AMPS, IS-136, IS-95, PCS-1900)
• Japan (PDC, PHS, IS-95), Asia (GSM, IS-95, AMPS and others)
• Europe (GSM, DCS 1800 etc.)
Ø Capabilities still below par to its landline rival
§ Data Throughput
§ Web Browsing
§ Multimedia services/support
Ø Basic services
§
2/12/2003
unaffordable to majority of the world population
Prof.dr Milica Pejanovic, University of
Montenegro
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ITU Seminar on IMT-2000, Ljubljana, December 2003
Driving factors for 3G implementation
Ø Unified global cellular standard
§ One standard covers the globe
Ø Wireless Service offerings
§ Matching to the Public Switched Telephone Network (PSTN)
Ø Efficient usage of the available spectrum
§ Wide coverage, Large Capacity
§ Affordable
Ø Flexible to accommodate any future requirements
§ Easy to add-on new services
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Prof.dr Milica Pejanovic, University of
Montenegro
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ITU Seminar on IMT-2000, Ljubljana, December 2003
Driving factors for 3G implementation
Ø Wireless connectivity to Internet
Ø Phenomenal growth in cellular subscribers
Ø Multimedia capable terminals
§ Video streaming
§ Simultaneous voice/data/browsing capability
Ø Killer application
§ Multimedia capable service offering
Ø New source of Revenue
§ Voice market is saturating
§ Demand for data services increasing
2/12/2003
Prof.dr Milica Pejanovic, University of
Montenegro
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ITU Seminar on IMT-2000, Ljubljana, December 2003
Global situation
Ø Year 2002
§ Reached almost 1 billion wireless subscribers
Ø Two major wireless network architectures:
§ ANSI-41 and
§ GSM/MAP
• Deployed over 100 countries
Ø Large investment requires each to have an evolutionary path to 3 G
Ø Hence, adoption of ITU “family of systems” approach
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Prof.dr Milica Pejanovic, University of
Montenegro
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ITU Seminar on IMT-2000, Ljubljana, December 2003
ITU objectives for IMT-2000
IMT-2000 (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:
Ø high degree of commonality of design world-wide;
Ø compatibility of services within 3G standards and with
the fixed networks;
Ø high quality;
Ø small terminal for world-wide use;
Ø world-wide roaming capability;
Ø capability for multimedia applications, and a wide range
of services and terminals;
Ø support of a limited number of different radio interface
technologies within the 3G family.
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Prof.dr Milica Pejanovic, University of
Montenegro
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ITU Seminar on IMT-2000, Ljubljana, December 2003
Five Layers Wireless Communications
Layer 1 – Global Satellite Communication
incl. High-Altitude Platform Systems
(HAPS)
Layer 2 – Global Cellular Communication
IMT-2000
Layer 3 – Global Wireless LAN
Layer 4 – Global Wireless PAN (LPRF)
1 bps –
Layer 5 – Global B-PAN (mmwave)
1 Gbps
5-layers Wireless Communications provide mobile everywhere
and they compliment to each other.
2/12/2003
Prof.dr Milica Pejanovic, University of
Montenegro
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ITU Seminar on IMT-2000, Ljubljana, December 2003
Migration scenarios towards 3G networks
2G
2.5G
3G
4G
TMA
IS-126B
EDGE
UWC-136
UWCC
CDMAOne
IS-95B
EDGE
Phase 2
over 400 kb/s
1XEV-DO
1XEV-DV
2,4Mb/s
5,4Mb/s
3GPP2
HSCSD
GSM
GPRS
All-IP networks
IMT-MC
CDMA 2000
1X/3X
IS-41 Core Network
IMT-SC
IMT-DS
WCDMA
HSPDA
WCDMA
EDGE
3GPP
GSM MAP Core
Network
10 Mb/s
ITU IMT-2000
2/12/2003
Prof.dr Milica Pejanovic, University of
Montenegro
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ITU Seminar on IMT-2000, Ljubljana, December 2003
Global 2G and 3G standards
(2+3)G Operator needs
•
•
•
•
•
•
10.0
1.0
0.1
0.01
Wireline Terminal
USA
2G: PCS + MAP
3G: UTRAN + MAP +
2G: IS-95 + ANSI - 41
3G: cdma2000 + ANSI – 41 +
2G: IS-136 + ANSI - 41
3G: TDMA/136, EDGE ANSI-41 +
Europe
2G: GSM + MAP
3G: UTRAN + MAP +
Dual mode 3G/2G terminals
3G/2G coverage
3G/2G service handover
Reuse of 2G cell site grid
Reuse of 2G networks
Reuse of 2G spectrum due to later refarming
3G UTRA N
FDD and TDD
2G TDD:
e.g. DECT, PHS for
WLL, CT, W-PBX
Office of
Room
Building
Indoor
2/12/2003
Prof.dr Milica Pejanovic, University of
Montenegro
2G FDD: e.g GSM,
IS-136, IS-95 CDMA, PDC
Stationary
WLL
Pedestrian
Vehicle
Outdoor
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ITU Seminar on IMT-2000, Ljubljana, December 2003
DEPLOYMENT STRATEGIES FOR 3G
SYSTEMS
When choosing an adequate approach for 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
2/12/2003
Prof.dr Milica Pejanovic, University of
Montenegro
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ITU Seminar on IMT-2000, Ljubljana, December 2003
DEPLOYMENT SCENARIO No.1
In this type of scenario the following versions may appear:
Ø
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
Ø 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.
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Prof.dr Milica Pejanovic, University of
Montenegro
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ITU Seminar on IMT-2000, Ljubljana, December 2003
COMPARISON OF SCENARIOS No.1(a) AND No.1(b)
All-round-type
scenario
Complement-type
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
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other
Cellular mobility
Micro and macro
cells
Indispensable
Prof.dr Milica Pejanovic, University of
Montenegro
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ITU Seminar on IMT-2000, Ljubljana, December 2003
DEPLOYMENT SCENARIO No.2
There are two possible ways for mobile operators to migrate from
2G (2G+) to 3G:
Ø Scenario No.2(a):
Existing 2G or 2G+ core network could be upgrade for 3G use. In this
case 2G and 3G networks share the same core infrastructure.
Ø Scenario No.2(b):
Independent 3G core network could be implemented completely
independent from the existing 2G core infrastructure.
2/12/2003
Prof.dr Milica Pejanovic, University of
Montenegro
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ITU Seminar on IMT-2000, Ljubljana, December 2003
SCENARIO No.2 (a):
COMMON CORE NETWORK FOR 2G AND 3G
UMTS
RNC
UMTS
BS
UMTS TE
IN Platform
Iub
UMTS
BS
Iu
ISUP
BTS
A
Iu
GSM
BTS
GSM/GPRS
TE
Camel
Gb
Map
BTS
Abis
GSM TE
Gn
A
GSM
BSC
GSM
BTS
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Internet
Gi
GSM
BTS
BTS
ISDN
HLR
GSM
BSC
GSM
BTS
Map
MSC/VLR
Abis
Internet
SGSN
GGSN
RAN Subsystem
CN Subsystem
Prof.dr Milica Pejanovic, University of
Montenegro
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ITU Seminar on IMT-2000, Ljubljana, December 2003
SCENARIO No.2 (b):
INDEPENDENT 2G AND 3G CORE NETWORKS
UMTS
BS
UMTS
BS
UMTS TE
ISUP
Iub
GSM/GPRS
TE
3G SGSN
BTS
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HLR
Map
Gb
GSM
BTS
ISUP
A
GSM
BSC
BTS
GSM TE
Camel
ISDN
Abis
GSM
BTS
GSM
BTS
3G MSC/VLR
Iu
BTS
GSM
BTS
Iu
UMTS
RNC
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
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ITU Seminar on IMT-2000, Ljubljana, December 2003
IMPACTS OF SCENARIOS No.2 ON EXISTING 2G
NETWORKS
Ø 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
Ø SCENARIO No.2(b):
§
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2G and 3G networks have minimum impact on each other
Prof.dr Milica Pejanovic, University of
Montenegro
17
ITU Seminar on IMT-2000, Ljubljana, December 2003
DEPLOYMENT SCENARIO No.2:
Optimized implementation
The use of a single homogenous network based upon IP
becomes the logical choice for the delivery of seamless
services within mobile networks and allows these service
to span the voice, data and video domains – thus migrating
the mobile network towards a true multimedia capability.
This can be achieved by migrating all of the services and
applications within the mobile network onto packet based
(IP or IP+ATM) network. The most logical way for that
would be if the packet based platform migrates from the
core network towards radio access network.
2/12/2003
Prof.dr Milica Pejanovic, University of
Montenegro
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ITU Seminar on IMT-2000, Ljubljana, December 2003
DEPLOYMENT SCENARIO No.2:
Optimized 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
2/12/2003
Prof.dr Milica Pejanovic, University of
Montenegro
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ITU Seminar on IMT-2000, Ljubljana, December 2003
DEPLOYMENT SCENARIO No.2:
Optimized implementation
The new IP Multimedia Core Network subsystem introducing AllIP environment is implemented in a way to enable two major
benefits:
• 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 type of services.
Also, MPLS enables utilization of a single physical infrastructure,
switches and transmission links, for both types of traffic: nativeATM and IP.
2/12/2003
Prof.dr Milica Pejanovic, University of
Montenegro
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ITU Seminar on IMT-2000, Ljubljana, December 2003
FUTURE STANDARDIZATION ACTIONS
SIM
USIM
End-to-end IP
ITU
framework
standards
3GPP
Internet standards
IETF
W3C
P3P
Proprietary standards
Terminal
Windows-CE
Software standards
Encoding
Software
standards
Radio
Net
Core
Net
WAP
UTRA
EDGE
UWCC
MAP
IS41
GPRS/IP
ATM
Internet
Content
IP, SMTP, FTP,
HTTP, CHAT,
HTML, WML
PSTN
ISDN
Other
PLMN
*
W3C - World Wide Web Consortium
P3P - Platform on Privacy Preferences
2/12/2003
Prof.dr Milica Pejanovic, University of
Montenegro
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