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SCHOOL ON DIGITAL
AND MULTIMEDIA
COMMUNICATIONS
USING TERRESTRIAL
AND SATELLITE
RADIO LINKS
TELIT MOBILE TERMINALS
27th February 2001
Towards 3G Cellular Systems
Guido Walcher
Telit Mobile Terminals S.p.A.
Strategies and Product Planning
v.le Stazione di Prosecco 5/B
34010 - Sgonico
[email protected]
TELIT GROUP
Industries for Telecommunications
1
Wireless scenarios
Cellular Mobile Technologies
by Region (based on subscriber)
end 2000
Around 1/2 billion new digital handset in 2000
TELIT GROUP
Industries for Telecommunications
2
Standards evolution scenario
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Industries for Telecommunications
3
Standards evolution scenario
TELIT GROUP
Industries for Telecommunications
4
Standards evolution scenario
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Industries for Telecommunications
5
TACS
NMT
GSM
HSCSD
EDGE
GPRS
TELIT GROUP
Industries for Telecommunications
UMTS
Standards evolution scenario
The Access Technologies
6
Multimedia
384K
Voice
Services
56K
Services enhancement
From Voice to Multimedia
9.6K
Data rate
2.4K
ETACS
1G
TELIT GROUP
GSM
2G
GPRS
2,5G
Industries for Telecommunications
UMTS
3G
7
Java
for planned higher bandwidth
(Internet) data services
Wap allows an efficient way of accessing the web through a
mobile terminal. It allows the viewing of images for example on a
small display. Although WAP has not taken off as initially
predicted, the introduction of ‘always on’ networks is likely to
increase the WAP uptake amongst users. Also, with a new
version of WAP being sought incorporating X-HTML, which is
also the direction in which the internet world is going, WAP is
likely to offer more to the end user.
Bluetooth offers a specification for short range RF connectivity.
This technology will allow handsets to be wirelessly linked to a
range of devices such as headphones and laptops.
Java is emerging as a key enabling technology facilitating
enhanced access to content by providing better graphics and
interactive features such as the download of games and music.
Expectations are that by the end of 2003, 60% of all phones will
be capable of running Java applications.
TELIT GROUP
Industries for Telecommunications
Enabling Technologies
WAP
Bluetooth
8
The User Terminal
TELIT GROUP
Industries for Telecommunications
9
Protocols
Application
IP / X.25
IP / X.25
Relay
SNDCP
GTP
SNDCP
LLC
LLC
Relay
BSSGP
RLC
RLC
MAC
MAC
GSM RF
MS
GTP
SNDCP
BSSGP
LLC
RLC
TELIT GROUP
Um
BSS
UDP /
TCP
UDP /
TCP
IP
IP
L2
L2
L1
L1
BSSGP
Network
Service
GSM RF L1bis
Network
Service
L1bis
Gb
GTP
SGSN
Gn
GGSN
Gi
GPRS Tunneling Protocol
Sub-network Dependent Convergence Protocol
Base Station System GPRS Protocol
Logical Link Control
Radio Link Control
Industries for Telecommunications
1
0
Handset evolution
TELIT GROUP
Industries for Telecommunications
1
1
• GSM/UMTS
•2002 - 2004
• GSM/EDGE/UMTS
• 2001 - 2003
• GSM/GPRS/EDGE
•2000-2002
• PC type applications
• WAP, EXCE, HTML
• E-commerce support • MPEG4 - H 323
• Interactive games
• Video conferencing
• JAVA
• WAP
• WindowsCE
• EPOC
BB, Modem,
S/W,
RF, PA,
Application
Co-Processor
LCD FLASH
TELIT GROUP
• Full MPEG4
Audio
• low rate video
Handset evolution
Video
Data
• Speech to
text
• MP3 • digital audio
• FM radio
• Bluetooth
• Location by
triangulation
• Bluetooth
multi-point
• Security and
Identification
Industries for Telecommunications
• GPS
Others
1
2
Handset evolution
TELIT GROUP
Industries for Telecommunications
1
3
Two evolution paths
Cellular phones
towards
Smart platforms
Personal Digital Assistant
get mobile
TELIT GROUP
Industries for Telecommunications
1
4
Especially in the early stages of service roll-out which will be
focused on metropolitan areas initially, the handsets will have to
be dual mode.
It is important therefore, that handsets should be backward
compatible with intermediate standards such as GPRS.
Several combinations of multi-mode handsets will be required.
Displays will be larger, be in color and offer higher resolutions
comparable to present PC resolutions.
They will also have to offer increased refresh times to support
viewing images and video conferencing.
Handset parameters
Multi mode
Enhanced screen
Complexity like a PC
High autonomy
To accommodate technologies such as video coding and overthe-air upgrades, handsets will be 20 to 30 times more complex
as enhanced processing and memory
capabilities incorporated within.
Power consumption will also be a factor as consumers will expect
at least the same performance as second generation phones
which offer up to eight hours of talk
and 200 hours of standby time.
TELIT GROUP
Industries for Telecommunications
1
5