MOBTEL’s Migration Path to 3G
MOBTEL’s Migration Path to 3G
Radmila Simic
Project Manager for Strategic Development
ITU-BDT SubRegional Seminar on IMT-2000
Ljubljana 1-3/12/03
MOBTEL’s Migration Path to 3G
The Union of Serbia and
Monte Negro
The Republic of Serbia :
§Territory: 88.361 sq.km
§Population:
- 9,2 mil.
- 7,5 mil. with 110 inh./sq.km
(without Kosovo)
§Capital: 2 mil. citizens
ITU-BDT SubRegional Seminar on IMT-2000
Ljubljana 1-3/12/03
1
MOBTEL’s Migration Path to 3G
Serbian market
GSM operators :
1. MOBTEL
(started in 1996)
2. “Telekom Srbija” (started in 1998)
Total mobile subscribers: 3 millions
Total mobile penetration: 40%
Market share:
nearly 50/50 %
Internet penetration: 6% with 47 providers →
GDP per capita :
2370 USD →
GDP growth :
3%
pure fixed lines
developing country
ITU-BDT SubRegional Seminar on IMT-2000
Ljubljana 1-3/12/03
MOBTEL’s Migration Path to 3G
Operator’s status
§
MOBTEL, the Company for Mobile Telecommunications
“Serbia” BK-PTT,ltd. operates as a joint-venture
company founded in 1994 by :
1. “BK Trade” (51% shares – private capital)
2. PTT “Srbija” (49 % shares – state capital)
§
TELEKOM, operates as a joint-venture company :
1. PTT “Srbija” (80% shares – state capital)
2. OTE Greece (20 % shares – private capital)
§
TELEKOM operates as a public fixed network operator
as well, with monopoly until Jun, 2005.→ liberalization !
ITU-BDT SubRegional Seminar on IMT-2000
Ljubljana 1-3/12/03
2
MOBTEL’s Migration Path to 3G
Regulation
§ Competion market is not yet regulated.
§ New Telecommunication Law will be put into force in the
first half of the next year (licenses,interconnection, transparent,
objective and no-discriminatory basis, competion, ...).
§ No official anouncement has been issued by the National
Authority for the IMT-2000 license.
§ IMT-2000 frequency bands are occupied by other users.
ITU-BDT SubRegional Seminar on IMT-2000
Ljubljana 1-3/12/03
MOBTEL’s Migration Path to 3G
MOBTEL GSM
Coverage of
the Republic of Serbia
Current Status
§ territory coverage: 70%.
§ population coverage: 94%.
Need to enlarge coverage !
ITU-BDT SubRegional Seminar on IMT-2000
Ljubljana 1-3/12/03
3
MOBTEL’s Migration Path to 3G
Key figures for the Mobtel network
§
§
§
§
§
§
Standard: GSM 900/1800, Phase 2+
Network size: 6 MSC+1 TSC, 430 BTS
Release : R9.1
GPRS: in the whole network for post&prepaid; roaming is testing
EDGE: pilot
Vendor: ERICSSON (NSS, BSS, IN, PPS, WAP, MVPN, GPRS, MMS )
Comverse (SMS, VMS)
§ Transport network: MW (PDH Ericsson, SDH Marconi)
§ VAS: SMS-email, MMS, Internet, Intranet, GSM Pro, etc.
§ VMNO: Astra Simit ( company as service and applications provider)
ITU-BDT SubRegional Seminar on IMT-2000
Ljubljana 1-3/12/03
MOBTEL’s Migration Path to 3G
Objectives of M obtel’s Business in 2003
§ Subscribers: 1,6 millions (Post/PrePaid = 20%/80%)
with 22% penetration growth
§ Service monthly usage: 150 min/postpaid customers
25 min/prepaid customers
§ SMS monthly :
90 millions messages
§ SMS in bussy hour:
230k BHSM
§ ARPU:
20 USD per postpaid customers
ITU-BDT SubRegional Seminar on IMT-2000
Ljubljana 1-3/12/03
4
MOBTEL’s Migration Path to 3G
GPRS TRAFFIC
MBit
5.000
• 65.000 users
(13.000 instant.)
• 40 KB/user
• BH around 24h
4.500
4.000
3.500
3.000
2.500
2.000
1.500
1.000
↑
June 03
5.nov.03
12.nov.03
29.okt.03
22.okt.03
8.okt.03
15.okt.03
1.okt.03
24.sep.03
17.sep.03
3.sep.03
10.sep.03
27.avg.03
20.avg.03
6.avg.03
13.avg.03
30.jul.03
23.jul.03
9.jul.03
16.jul.03
2.jul.03
0
25.jun.03
500
date
Mostly are for WAP !
Nov 03
GPRS traffic
start
ITU-BDT SubRegional Seminar on IMT-2000
Ljubljana 1-3/12/03
MOBTEL’s Migration Path to 3G
Multimedia messages in Nov. 03
20000
18000
16000
14000
Total messages sent
Success messages sent
Push messages
Received messages
Received E-mail
12000
10000
8000
6000
4000
2000
ITU-BDT SubRegional Seminar on IMT-2000
19.nov.03
17.nov.03
15.nov.03
13.nov.03
11.nov.03
9.nov.03
7.nov.03
5.nov.03
3.nov.03
1.nov.03
30.okt.03
28.okt.03
0
Ljubljana 1-3/12/03
5
MOBTEL’s Migration Path to 3G
MULTIMEDIA SERVICES
§It takes time to build markets !
§40% are for video
§20% are for shoping
VIVO
FOR ALL
VIVO
MMS
VIVO
ENTERTAINMENT
VIVO
PROMOTION
ITU-BDT SubRegional Seminar on IMT-2000
Ljubljana 1-3/12/03
MOBTEL’s Migration Path to 3G
Projected Mobtel’s growth through the year 2006
Expected number of subscribers
5000000
4500000
GSM
4000000
Voice services
still main driver !
WAP
3500000
GPRS
3000000
EDGE
2500000
Need to create
content and
social motion !
UMTS
2000000
MMS
1500000
1000000
500000
0
2001.
2002.
2003.
2004.
ITU-BDT SubRegional Seminar on IMT-2000
2005.
2006.
Ljubljana 1-3/12/03
6
MOBTEL’s Migration Path to 3G
Releases
§Due to ongoing standardization work specifications for
GSM were grouped into “Releases” enabled industry to
proceed with the development including monstrous SW !
§Operators have been forced to implement all
enhancements generally annuel introducing numerous
new features and technological improvements.
§Similarly operators could expect this gradual process will
continue, opening the path for the migration to 3G
services.
ITU-BDT SubRegional Seminar on IMT-2000
Ljubljana 1-3/12/03
MOBTEL’s Migration Path to 3G
Consideration
§Operators should set requirements and overall strategy for
clear objectives that meet market’s need.
§The debate over 3G migration procedures could be
described as economical matter and users need for new
applications.
§There are real concerns that wrong choice will lead
operators in the developing countries to costs to high
comparing to the investment in building a network expansion
and delivering innovated services to 2G customers.
ITU-BDT SubRegional Seminar on IMT-2000
Ljubljana 1-3/12/03
7
MOBTEL’s Migration Path to 3G
Models for 3G transition strategy
GSM operators could concern several models to decide
on 3G transition strategy :
1. Continue building out the existing GSM/GPRS network
to launch 3G data servicies with the EDGE upgrading
and postpone the deployment of the 3G network for the
later stage.
2. Continue building out the existing GSM/GPRS network
improving quality and capacity and begin in paralel
deploying 3G network only in urban areas for high-endusers.
3. Immediately start to deploy 3G network nationwide for
the high-end data services.
ITU-BDT SubRegional Seminar on IMT-2000
Ljubljana 1-3/12/03
MOBTEL’s Migration Path to 3G
Analysing the factors involved in technology evolution
decision
§
Operators are evaluating technology evolution options and
determine the best strategy based upon its specific situation and
many factors, including :
§ Spectrum availability
§ Subscriber maturity
§
§
§
§
Mobile Internet services
Competition
Handsets
Financial situation
ITU-BDT SubRegional Seminar on IMT-2000
Ljubljana 1-3/12/03
8
MOBTEL’s Migration Path to 3G
Analysing the factors involved in transition options
As a GSM operator in the developing country with low
economy status and subscriber base still mostly voice-centric,
MOBTEL has decided to upgrade its network firstly with
EDGE technology for 3G service implementation.
§
§ EDGE is included as a complement to 3G systems path to
provide 3G data services demanding by market in a cost
efficient way.
To make a decision rather simple !
§ Gradual investments
§ Simple service migration
§ High network infrastructure reusability
ITU-BDT SubRegional Seminar on IMT-2000
Ljubljana 1-3/12/03
MOBTEL’s Migration Path to 3G
STRATEGY
§ The MOBTEL`s strategy is to achieve high-quality GSM
and GPRS network with the EDGE system upgrading
nationwide and to start with 3G technology at moderate
speed starting in major cities with high population at the
stage when 3G frequencies will be available.
§ New 3G system requires substantial new investment,
since a new Radio Access Network needs to be
deployed.
§ To make reuse possibility of many of the service network
components as well as other peripheral systems.
ITU-BDT SubRegional Seminar on IMT-2000
Ljubljana 1-3/12/03
9
MOBTEL’s Migration Path to 3G
3G STANDARDIZATION
§ MOBTEL has adopted the UMTS system with W-CDMA as
an option of the migration path from GSM to the 3G system
and services providing high capacity link of up to 2 Mbit/s to
each user.
§ Ability to coexist and interworking UMTS system with the
existing GSM/GPRS/EDGE network should be the right
choice to enable seamless functionality between two
systems.
§The decision to evolve from GSM to a seamless
GSM/GPRS/EDGE/UMTS network as a migration path is
the best solution for our company and our customers.
ITU-BDT SubRegional Seminar on IMT-2000
Ljubljana 1-3/12/03
MOBTEL’s Migration Path to 3G
Service development in Phases
MOBTEL as a 2,5G operator, have recognized three distinct
phases in the evolution towards 3G services as the market
evolves. According to Ericsson`s White Paper :
§ Phase I – voice centric
§ Phase II – high speed data and mobile Internet
§ Phase III – high speed multimedia and maturing mobile Internet
Choosing WCDMA deployment at moderate speed MOBTEL will
remain in Phase I and Phase II for a longer period to continue with
coverage and capacity expansion, and then slowly enter in Phase III.
In our case study I think 2G will be for a long time to fill the gaps for
where we have not really got 3G coverage.
ITU-BDT SubRegional Seminar on IMT-2000
Ljubljana 1-3/12/03
10
MOBTEL’s Migration Path to 3G
Data service evolution in Mobtel network
Functionality
Long period
Short period
UMTS
2 Mbps
3G
GPRS/EDGE
384 kbps
2,5G
GSM/GPRS
160 kbps
GSM CS data services
2G
9.6 kbps
96
→
97
98
99
00
01
02
03
04
05
Year
06
Mobtel GPRS network currently support 48 kBit/s, based on QoS
ITU-BDT SubRegional Seminar on IMT-2000
Ljubljana 1-3/12/03
MOBTEL’s Migration Path to 3G
GSM/GPRS Architecture
(current status)
MSC/VLR
Gs
Gr
Gd
A
BTS
SMS
GW -MSC
HLR
SS-7
A’’
Radius
BSC
PCU
SGSN
Gb
BTS
Gb
GGSN
Gn
Gn
Frame Relay
backbone
Gi
WAP
Mobile ISP
Gi
Gi
IP backbone
Radius
Host
Gi
ISP
Gp
DNS
NTP
BGw
Other PLMNs
PXM
Radius
Host
Corporate
ITU-BDT SubRegional Seminar on IMT-2000
Ljubljana 1-3/12/03
11
MOBTEL’s Migration Path to 3G
GSM Infrastructure
Gs
Gr
IP Infrastructure
Gd
A
BTS
SMS
GW -MSC
HLR
MSC/VLR
SS-7
A’’
Radius
BSC
SGSN
PCU
Gb
BTS
GGSN
Gn
Gb
Gn
Frame Relay
backbone
Gi
WAP
Mobile ISP
Gi
Gi
IP backbone
Radius
Frame Relay
Infrastructure
Host
Gi
ISP
Gp
DNS
NTP
BGw
PXM
Radius
Other PLMNs
Host
Corporate
ITU-BDT SubRegional Seminar on IMT-2000
Ljubljana 1-3/12/03
MOBTEL’s Migration Path to 3G
EVOLUTION to UMTS in GSM/GPRS/EDGE environment
- The most cost-effective option Access network
Core network
Application server
Narrowband
64/115 kbit/s wide area
384 kbit/s local area
Application server
Service Delivery Platform
IN SCP
2G
GSM
Radio Access
GSM
Specific
GSM /EDGE
UMTS
Addition
BSS
2G
3G
3G
GMSC
MSC
PSTN
PSTN
ISDN
ISDN
UMTS
HLR/AAA
UMTS
UMTS
Radio Access
UTRAN
GSM
Specific
UMTS
Addition
GGSN
SGSN
UMTS
Internet
Internet
Intranet
Intranet
Wideband
384 kbit/s wide area
2 Mbit/s local area
ITU-BDT SubRegional Seminar on IMT-2000
Ljubljana 1-3/12/03
12
MOBTEL’s Migration Path to 3G
CONCLUSION
§ ECONOMIC ASPECTS WITH THE COSTS OF THE POSSIBLE OPTIONS.
§ MINIMIZE THE COSTS OF MANAGING EXISTING 2 G AND A NEW 3 G
NETWORK.
§ COEXIST AND SHARE THE SAME INFRASTRUCTURE.
§ MARKET DEVELOPMENT FOR MOBILE DATA AND INTERNET.
§ DEVELOPMENT OF IP-BASED MMS.
FAQ: Still many questions about 3G →
ITU-BDT SubRegional Seminar on IMT-2000
Ljubljana 1-3/12/03
MOBTEL’s Migration Path to 3G
FAQ
We have still many questions about real life experience in implementing
2G(GSM) / 3G/UMTS seamless network:
§ How much will it cost ?
§ How will make it work efficiently ?
§ What benefits will we get from it ?
§ Coexistance between GSM and UMTS ?
§ Possible network architecture ?
§ Interworking approaches ?
§ What parts of GSM core infrastructure can be used for UMTS core network ?
§ Understanding tha phasing of the core network ?
§ Functionality within UMTS interfaces and UTRAN protocols ?
§ Comparison of GSM/UMTS coverage ?
§ Planning the UMTS radio network design ?
§ What are the security of the UMTS SIM ?
§ Users experience in handover or roaming between 2G and 3G network ?
Equipment manufacturers will need to offer complex handsets in time !
ITU-BDT SubRegional Seminar on IMT-2000
Ljubljana 1-3/12/03
13
MOBTEL’s Migration Path to 3G
Thank You!
Radmila Simic
Project Manager for Strategic development
radmila.simic@mobtel.co.yu
ITU-BDT SubRegional Seminar on IMT-2000
Ljubljana 1-3/12/03
14