ON OPTIMIZATION OF 3G CELLULAR SYSTEMS DEPLOYMENT
Prof.dr Milica PejanovicUniversity of Montenegro, Podgorica, Yugoslavia
E-mail: [email protected]
ITU IMT-2000 SeminarWarsaw, October 2001
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 2
EVOLUTION OF CELLULAR SYSTEMS
'80s '90s '2000s
Initial stage Growing stage Expansion stage Matured stage
AMPS, NMT, NTT...(1st generation)
GSM, PDC, IS-95(2nd generation)
DIGITAL
(3rd generation)IMT-2000 4th-
generation
MobileData <300bps 9.6k-64 kbps
(packet)64k-384 kbps
2Mbps (indoor)
2 Mbps20 Mbps (best effort
indoort)
PSTNData 28.8bps 64 kbps Up to 1 Mbps
(Flat rate) Up to 20 Mbps ??
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 3
WORLDWIDE DISTRIBUTION OF CELLULAR STANDARDS
Europe
RMTS RC2000 C450 NMT900E
TACS
GSM
NMT450
NMT450i
TACS
AMPS
DAMPSIS-54
CDMAIS-95
PDC
GPRS
HSCSD
EDGE
DCSI800 USDC
PCS1900
PCSUWC-136
PHS
NAMTS
UMTS
IMT-2000
Under standardization
?
3G
3+G
2+G
2G
DigitalAnalog (1G)
US Japan
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 4
DEVELOPMENT TRENDS IN WIRELESS STANDARDS
N-ISDN B-ISDN Optical fiber networks Gigabit-net
2000 2010 2020Mobility
Vehicle
Pedestrian
Office
10k 2M 50M 155Mb/s 600Mb/s
ITSHAPS
Milli-waveLAN
WirelessAccess
IMT-2000GSMPDCPHS
2ndGeneration
3rdGeneration
4thGeneration
5thGeneration
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 5
TARGETED FEATURES OF 3G NETWORKS
3G networks should provide access, by means of one or more radio links, to a widerange of telecommunications services supported by the fixed telecommunication
networks (e.g. PSTN/ISDN/IP), and to other services which are specific to mobileusers.
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.
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 6
COMPARISON OF 2G AND 3G CELLULAR SYSTEMS
System Aspects Existing 2 G Mobile Systems
New 3 G IMT-2000 Systems
Use of digital technology Already used for modulation, speech and channel coding as well as implementation and control of data channels
Increased use of digital technologies
Commonality between different operating environments
Each systems is primarily optimised for its specific operating environment
Optimisation of radio interfaces for multiple operating environments such as vehicular, pedestrian, intro-office, fixed wireless access and satellite, via a single flexible or scalable radio interface.
Frequency bands Operate in frequency bands ranging from 800 MHz to 1.9 GHz, depending on the country
Use a common global frequency band
Data services Limited to data rates below 115 kb/s (WAP-GRPS-SMS)
Transmission speeds up to 2 Mb/s
Roaming Generally limited to specific regions, Handsets not compatible between different systems
Global frequency coordination and ITU standards will provide true global roaming and equipment compatibility
Technology Spectrum efficiency, cost and flexibility limited by technology in use at time of system design
Spectrum efficiency, flexibility and overall costs all significantly improved.
Radio interfaces TDMA, CDMA W-CDMA Data speed 9.6 kb/s with evolution up to 171.2 kb/s
(2.5 G) 144 kb/s – 2 Mb/s
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 7
LAYERED ARCHITECTURE OF 3G NETWORKS
Service and applications
ServiceApplications
Applications
Supportservers
Supportservers
HLR
AAAH
MSCserver GW/MSC
server
PSTN/ISDN
Internet/IntranetWireless
access
MGW/PDSN
MGWRouter
Control
Connectivity
User data
Control
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 8
OVERVIEW OF 3G STANDARDIZATION BODIES
ITUIMT-2000
ITU-RRadio aspects
ITU-TNetwork aspects
OngoingCollaboration
3 GPPWCDMA + GSM
Others:UWC - 136
DECTTD-CDMA
3 GPP2cdma2000 + ANSI-41
Operators HarmonizationGroup
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 9
OPERATORS HARMONIZATION AGREEMENT
On optimization of 3Gcellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
Radio access- family of 3GCDMAmodes
Core network- family of 3Gsystems
Core network- 3G inter-familyroaming
FDD mode 1direct sequence
FDD mode 2multicarrier TDD mode
WCDMA cdma2000 Unpaired spectrum
EvolvedGSM/MAP
EvolvedANSI-41
Network-to-networkinterface
Flexible connection between RTTmodes and core networks based on
operators' needs
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 10
3G RADIO INTERFACE STANDARDIZATION
1996 1997 1998 1999 2000
Europe
Japan
US
W-TDMATD-CDMAW-CDMA
FDD:W-CDMATDD:TD-CDMA
W-CDMA
UMTS/W-CDMA
CDMA
TDMA
Wideband Cdma 2000
UWC - 136
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 11
IMT-2000 TERRESTRIAL RADIO INTERFACES
IMT - 2000
IMT-DS IMT-MC IMT-TC IMT-SC IMT-FT
CDMA TDMA FDMA
IMT-DS (Direct Spread)=W-CDMA (FDD)IMT-MC (Multi Carrier)=cdma 2000IMT-TC (Time-Code)=UMTS TDD, TD-SCDMAIMT-SC (Single Carrier)=UWC-136IMT-FT (Frequency Time)=DECT
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 12
MIGRATION SCENARIOS TOWARDS 3G NETWORKS
TDMA
2G
GSM
CDMA one
IS-136B/HSGPRS
EDGE
GPRS
HSCSDUMTS
CDMA 2000
2.5G
IS-95B
UWC-136
EGPRS
3GPPECSD
OHGTD-CDMA
3GPP2IMT2000
1 EXTREME
HDRIS-95
3G
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 13
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
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 14
TIMELINE FOR EVOLVING CDMA TO 3G CAPABILITIES
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
Layeredarchitecture
High-speed dataInternational roaming
Advanced voice/dataservicesmobile IP/secure data
Efficient data deliveryAdvanced user featuresHigh reliability
Capacity and coverageexpansionLow cost
4Q99 2Q00 1H01 2H02 2H03
IOS BSS
Jambala WAPand HLR IWF
MSC
cdma 2000 1xRBS 3G BSC
PCN
cdma2000 3X/DS-41 RBS
Media gatewaysMSC servers
ATM switchesIP routers
ATM and IPbackbone
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 15
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
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 16
Model for an EGPRS/136 network integrated into a TIA/EIA-136 circuit-switched network through an SGSN gateway MSC/VLR
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
Other PLMN
PDN
TE MT BSS SGSN GGSN
SGSNEIR
TE
GPRSHLR
SMS-GMSCSMS-IWMSC SM-SC
SMEANSI-41MC/OTAF
ANSI-41Gateway
MSC/VLR
ANSI-41Serving
MSC/VLR
ANSI-41HLR/AC
GGSN
Signaling interface
Signaling anddata-transfer
interface
Gn
Gp
GfGn Gi
GbUmR
GsGr
Gc
Gd
C
M
N
Q
C-D
E
C-D
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 17
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).
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 18
GPRS ARCHITECTURE
BTS
BSC
MSC
BTS
BTS
BSC
SGSN GGSN
Other PLMN PDN
GR
MS
MS
MS
Radio Subsystem
Base Station SubsystemBSS
Radio Interface Abis - Interface
Gb - Interface
Switching Subsystem
Gs - Interface
Gr - Interface
Gn - Interface
Gp - Interface
Gj - Interface
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
SSGR – Serving GPRS Support Node
GGSN- Gateway GPRS Support Node
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 19
COMPARISON OF GSM + STANDARDS
++ Top speed-- Extensive HW-upgrade
Urban,mostly stationary
ExtensivePS+CS384EDGE
++ Being online permanently++ Charging based on volume
Mostly urban, mobile and stationary
YesPS115GPRS
+ Available now- Expensive for subscriber
Rural and urban, mobile and stationary
NoCS57.6HSCSD
Pro’s and Con’sTypical
Application Environment
HW-Upgrade Required?
Circuit-switched packet-switched
Max. Bandwidth
(kbit/s)Name
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 20
UMTS (3GPP) ARCHITECTURE RELEASE ’99 (R3)This release supports WCDMA access and ATM-based transport
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
Core net
STM
IP
E-SGSN E-GGSN
HLR
E-VMSC E-GMSC
Packet domain
Circuit domain
GSMRSS
UTRAN
MS
TransportControl
Um
Radio
Uu
Gb
lu-cs
lu-ps
A
GiIP
PSTN ISDN
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 21
UTRAN ARCHITECTURE
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
UTRAN – UMTS Terrestrial Radio Access Network
RNS – Radio Network Subsystems
RNC- Radio Network Controller
SRNC
CRNC
Node B Node B Node B
RNS
Iub Iub
UE
DRNC
CRNC
Node B Node B Node B
RNS
CN
Iu Iu
Iur
Iub Iub
Uu
Uu
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 22
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
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 23
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
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
TE MT GERANR Um
TE MT UTRANR Uu
SGSN
MGW
MSC server
lu 2
lu1
lulu-ps
GGSN
MGW
GMSCserver
Nc
Nb
Gn
Mc
T-SGW
PSTN/ Legacy/Externat
PDN/ Internet
Gi
Other PLMN
Alternative AccessNetwork
Applications &Services*)
Legacy mobilesignalling Network
Multimedia IPNetworks
GGSN
SGSN
SCP
HSS*)CSCF
MRFMGCF T-SGW*)
Mg
Mm
Gi
Mr
Gr Gi
GpGn
CAPCx
R-SGW*)
Ms
lu1=lucs(RTP,AAL2)lu2=lu(RANAP)
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 24
EVOLUTION PATHS FOR MIGRATION TO UMTS R5
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
E-MPSN
CSCF
MRF
MGCF
MGW
MGW
E-GGSNE-SGSN
MGW
VMSC server GMSC server
UTRAN
lu-ps
lu-ps
lu-cs
Gi
Gi
IP
VoIP/VoATM
IP
IP
PSTN/ISDN
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 25
GSM MIGRATION PHASES
2G 2.5G 3G R99(R3) 3G R00 (R4) 3GR00+ (R5)
GSM
MAP
GPRS
MAP
UTRANW-CDMA
COREPS Domain - DataCS Domain - Voice
IP RANMSC split un Server
and GatewayCAMEL Ph3
SS7 over IPIP Multimedia servicesNew entities in the Core
SIP Call ModelCAMEL Ph4
Phase 1 - GSM CS Voice and DataPhase 2 - GPRS Overlay NetworkPhase 3 - UMTS R99Phase 4 - All IP UMTS R00Phase 5 - IP Multi-media (IM)
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 26
MIGRATION OF GSM TO UMTS
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
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
SecurityAuthentication, 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
ServicesSpeech and low-speed circuit-switched 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)
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 27
DEPLOYMENT STRATEGIES FOR 3G SYSTEMS
When choosing an adequate approach in 3G systems deployment, thefollowing 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 networkScenario 2 – evolutionary, applied through migration (upgrade) of
already existing 2G or 2G+ network
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 28
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): Complement3G 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.
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 29
COMPARISON OF SCENARIOS No.1(a) AND No.1(b)
All-round-type scenario
Complement-type scenarios
Transmission bit rate From lower to higher rates
Higher rate
Mobility From static to cellular mobility
Cellular mobility
Deployment Area From pico to macro cells
Micro and macro cells
Network interface If necessary Indispensable
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
2G, 3G and other mobile systems
Overlap Complement
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 30
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 sharethe same core infrastructure.
! Scenario No.2(b): Independent 3G core network could be implemented completely independent from the existing 2G core infrastructure.
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 31
SCENARIO No.2 (a) – COMMON CORE NETWORK FOR 2G AND 3G
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
BTS
UMTSBS
UMTSBS
UMTSRNCUMTS TE
BTS
GSMBTS
GSMBTS
GSMBSCGSM/GPRS
TE
BTS
GSMBTS
GSMBTS
GSMBSCGSM TE
Iub
Abis
Abis
MSC/VLR
SGSN
GGSN
Camel
HLR
ISDN
Internet
Internet
RAN Subsystem CN Subsystem
GnA
Gb
AIu
Iu
ISUP
GiMap
Map
IN Platform
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 32
SCENARIO No.2 (b) – INDEPENDENT 2G AND 3G CORE NETWORKS
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
BTS
UMTSBS
UMTSBS
UMTSRNCUMTS TE
BTS
GSMBTS
GSMBTS
GSMBSCGSM/GPRS
TE
BTS
GSMBTS
GSMBTS
GSMBSCGSM TE
Iub
Abis
Abis2G MSC/VLR
2G SGSNGGSN
Camel
HLR
ISDN
Internet
Internet
RAN Subsystem CN Subsystem
GnA
Gb
A
Iu
IuISUP
GiMap
3G MSC/VLR
3G SGSN
ISUP
Gn
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 33
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
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 34
OPTIMAL SCENARIO No.2 IMPLEMENTATION
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
Deploy fully switchedVirtual Transit Networkwith SS7 interworking
Deploy GPRSNetwork
Deploy IP Core
Migrate InternalIT infrastructureDeploy 3G
Access & CoreCommon IP Core
Network for voice&dataservices
Common Core Based onMPLS
Voice (Existing GSM Network) Data
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 35
Abbreviations• 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
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 36
Abbreviations
• 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
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001
Prof.dr Milica Pejanovic, University of Montenegro,Montenegro-Yugoslavia 37
Abbreviations
• 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
On optimization of 3G cellular systems deployment ITU IMT-2000 Seminar, Warsaw, October 2001