1.
Start

2. Mannesmann Mobilfunk E X P E R I E N C E S O F A P I O N E E R U S E R
Mannesmann Mobilfunk
E X P E R I E N C E S O F A
P I O N E E R U S E R

3. Dipl.-Ing. Holger Linden
Mannesmann Mobilfunk
Dipl.-Ing. Holger Linden
Technical Project Manager Cell Broadcast
Mannesmann Mobilfunk

4. Vodafone AirTouch Holdings
Vodafone AirTouch Holdings
D2 is part of the largest mobile communications company in the world
Vodafone

5. D2 Data Services DATA SERVICES GPRS WAP SMS CELL BROADCAST EMAIL HSCSD
D2 Data Services
DATA SERVICES
GPRS
WAP
SMS
CELL BROADCAST
HSCSD
FAX/DATA
and further services currently under development, e.g. UMTS
Milestones

6. Cell Broadcast History
Cell Broadcast History
AUGUST CBC V1.1 active (performance release)
JANUARY Commercial start 12snap
NOVEMBER 1999 CBC V1.01 active (stability release)
FEBRUARY 1999 CBC V1.0 active
Further services Handelsblatt & Pro7
OCTOBER First commercial service D2-BestCitySpecial
JUNE Start Pilotphase with Mannesmann Telecommerce
APRIL First CBC delivered by CMG
MARCH First presentation Cell Broadcast on CeBIT
APRIL Decision to take CMG as vendor
MAY D2-internal Kick Off Cell Broadcast

7. Problems to overcome Information Provider Cell Broadcast Center BSC 1
Problems to overcome
Information Provider
Cell Broadcast Center
BSC 1
BSC 2

8. Information Provider Problems
Information Provider Problems
Development of CBE software takes some time
D2 provides also access via Internet for
manual and automated input of messages
Broadcasting of CB-messages can not be controlled by
Information Provider in all regions
No direct feedback of the customer, difficult to make
estimations how many customers are using CB
...

9. CBC Problems Functional problems:
CBC Problems
Functional problems:
Functional problems were and are still present
Number of problems was significantly decreased
by CBC V1.01 & V1.1
Stability problems:
Serious stability problems were solved with CBC V1.01 in
November 1999
Performance problems:
Significant performance increase with CBC V1.1
D2 performance requirement: 4000 BSC-req/minute
Further investments necessary (network growth)

10. Network Problems Connection between CBC and BSCs (bandwidth)
Network Problems
Connection between CBC and BSCs (bandwidth)
General configuration problems:
- CBC must know all BSCs and BTSs
- All BSCs must be configured to support CB
- Network changes must be known (new BSCs/BTSs,
swapped BTSs, etc.)
- CBC must react on changes in the network

11. BSS Problems Storage capacity of BSC Performance of BSC
BSS Problems
Storage capacity of BSC
Performance of BSC
Functionality in BSS (phase 2+ not supported in all brands)
Handling of cell lists in BSC
...

12.
Air Capacity Problems
Air capacity limited to 1 CB-page each seconds
in GSM
Only way to increase air capacity is use of extended CBCH
(nearly double capacity on air interface)
More air capacity will be available with UMTS

13. Mobile Problems Beginning of 1998 only few mobiles supported CB
Mobile Problems
Beginning of 1998 only few mobiles supported CB
Strange reactions of mobiles on CB-messages
(switched off, started network scanning, etc.)
Loss in standby time due to CB (Solution: DRX
mode)
Functions like multipage messages, immediate
display, etc. not always supported in mobiles with
CB implementation
Different behaviour of different mobile types lead to
high expenses to communicate how to activate CB
to the customer

14. Cell Broadcast Services
Cell Broadcast Services
D2 - services with external content:
Provider Content Channel (MI)
Pro 7 Topics of the day 107
12snap Auctions
Handelsblatt Business/financial news 140
MTC Traffic Information 666 & 43520
D2 - service with internal content:
D2-BestCitySpecial Presentation of area codes 50 & 100

15. Future Services with Cell Broadcast
Future Services with Cell Broadcast
Advertising
Stock information
Tourism offers / information
Special offers of shops / companies
Additional magazin - information
e.g. music magazin gives information about delay of concert
start per CB
Public channels for police, fire brigade
...

16. Email: holger.linden@d2mannesmann.de
Thank you very much
for your attention
Holger Linden
Phone: +49 /
I‘ve got to go now...