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GPRS for a Mobile Internet
Symmetry Communications
We Make the Internet Mobile
Patrick Tao
VP, Product Marketing
[email protected]
Feb 14, 2/7/01
2001 DRAFT
Confidential & Proprietary Information,
Copyright 2001, Symmetry Communications Systems
www.symmetrycomm.com
www.symmetrycomm.com
p. 1
Our Mission
To develop and deliver award winning
packet data solutions that drive rapid adoption of
the mobile Internet.
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p. 2
Mobile Internet Vision
Enabling the Mobile Internet – GPRS
Traditional Circuit
Switched Wireless
Network
BTS
Independent and
Affiliated Content &
Application Providers
BSS
Traditional Mobile Voice
PSTN
Devices
Enterprise Networks
Diverse Devices and
User Styles
2/7/01 DRAFT
eBusiness Powered
Corporations
Mobile Internet
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p. 3
Mobile Data Market Opportunity
Worldwide Cumulative Subscribers
2,000
CAGR
2001-06
Cumulative Subscribers (Millions)
1,714M
1,594M
1,464M
1,500
1,302M
3G
153%
2.75G
62%
2.5G
54%
2G
(1%)
1,110M
1,000
899M
677M
500
465M
2G
0
1G
1999
(52%)
1G
2000
2001
2002
2003
2004
2005
2006
Source: CE/NSS Forecast used for Cumulative Subscribers
Mobile Wireless is the Next Telecom Revolution
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New Revenue Opportunities
Grow Market Share and Revenues through Network of…
Devices
Subscribers
Characteristics
• Device optimized
• Location based
• Timely
• Highly segmented
• Open access
• Personalized
• Customized
• mBusiness
• mConsumer
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Benefits
Content
• Rich Applications
Yahoo!
• High-value content
• Lower churn
AOL
Yellow
Pages
etc.
Applications & Services
Corp
Retail
Fin
etc.
• Higher ARPUs
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Cut Operating and Network Costs
Deploy Networks that Leverage IP Technologies
Devices
Subscribers
Content
Migrate from voice-only mobility to mobile
eCommerce
 Evolutionary transition to IP networks
Applications & Services
Network
 Higher Speed radios
 Optimize network for Mobile Internet
services and applications
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IP
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WCDMA.
www.symmetrycomm.com
p. 6
Operator Business Imperative
Net Revenues
ARPU*
“Bottoming out”
Voicebased
Business
2G
Voice Services
Revenues
Information
Service
Revenues
Informationbased
Business
2.5G Systems
3G Systems
Transition Phase
*ARPU: Average Revenue per Unit in Service
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p. 7
GSM Data Services
• CSD - Circuit switched data (9.6 kbps)
• HSCSD - High Speed CSD (n x CSD kbps)
• GPRS - General packet radio service (up to 115 kbps)
• EDGE - Enhanced Data service for Global Evolution
(up to 384 kbps)
• UMTS – Universal Mobile Telecommunication System
(up to 2Mbps)
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Wireless Packet Switched Data
• Transmits information in packets
• Connectionless or datagram service with destination
address in packets
• Radio channels are shared by multiple users
• Always on, always connected
• Well suited for IP data transmission
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p. 9
GPRS Standard
• A standard from ETSI on packet data in GSM systems
• Accepted by TIA for TDMA/ANSI-136
• Supports IP and X.25
• Up to 115 kbps (14.4 kbps x 8)
• Point-to-point and point-to-multipoint services
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p. 10
GPRS Terminals
• Class A – support simultaneous GPRS and GSM voice
services with two channels
• Class B – support either GPRS and GSM voice services
with simultaneous network attachment
• Class C – support only GPRS service
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p. 11
GPRS Data Rates
Scheme
Data Rate
(kbps)
Note
CS-1
9.05
Best performance for low
C/I values
CS-2
13.4
CS-2 and CS-3 have similar
performance
CS-3
15.6
CS-2 and CS-3 have similar
performance
CS-4
21.4
Needs high C/I values
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p. 12
Services Enabled by GPRS
Everything you can do on the Internet today
but Anywhere, Anytime, Anyplace:
• eCommerce -> mCommerce
• WAP and iMode applications (mobile internet browsing)
• Mobile Corporate Intranet (online publishing, corporate
automation, …)
• File sharing (MP3, MPEG4, …)
• P2P Messaging (IM, E-mail, SMS)
• Others: Active Personal Information Management
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p. 13
GPRS Architecture
PSTN, ISDN
etc
SMS-GMSC
SMS-IWMSC
E
SM-SC
AuC
C
H
D
MSC/VLR
A
TE
MT
BTS
TE
MT
BTS
BSC
TE
MT
BTS
BSC
R
Um
F
EIR
BSS
Gs
Gd
Gr
Gc
Gf
SGSN
Frame Relay
Network
HLR
Gb
Gn
Gi
GGSN
Internet
TE
Gn
BG
SGSN
Gp
Abis
BG
Signaling Interface
Signaling and Data Transfer Interface
Other PLMN
Cost Efficient Mobile Internet Upgrade of GSM and
TDMA Networks
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p. 14
GPRS G Interfaces
Ga Charging data collection interface between a CDR transmitting unit (e.g., an SGSN or a GGSN)
and a CDR receiving functionality (a CGF).
Gb Interface between an SGSN and a BSS (Base Station System).
Gc Interface between a GGSN and an HLR.
Gd Interface between a SMS-GMSC and an SGSN, and between a SMS-IWMSC and an SGSN.
Gf Interface between an SGSN and an EIR (Equipment Identity Register).
Gi Reference point between GPRS and an external packet data network.
Gn Interface between two GSNs within the same PLMN.
Gp Interface between two GSNs in different PLMNs. The Gp interface allows support of GPRS
network services across areas served by the co-operating GPRS PLMNs.
Gr Interface between an SGSN and an HLR
Gs Interface between an SGSN and an MSC/VLR
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p. 15
Serving GPRS Support Node (SGSN)
• Perform mobility management for GPRS terminals
(attach/detach, user authentication, ciphering, location
management)
• Manage the logical link to mobile terminals (packet
traffic, SMS traffic, layer 3 signaling)
• Route packets between mobile terminals and the GGSN
• Charging information
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p. 16
Gateway GPRS Support Node (GGSN)
• Function as a gateway router between SGSN and
external networks
• Authenticate users to external networks
• Assign or obtain from external packet network PDP
addresses to mobile terminals
• Charging information
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p. 17
GPRS Network Functions
PSTN, ISDN
etc
SMS-GMSC
SMS-IWMSC
E
SM-SC
AuC
C
H
D
MSC/VLR
A
TE
MT
BTS
BSS
TE
MT
BTS
BSC
TE
MT
BTS
BSC
R
Um
F
EIR
Gs
Gd
Gr
Gc
Gf
SGSN
Frame Relay
Network
HLR
Gb
Gn
GGSN
Gi
Gn
BG
SGSN
Gp
Abis
BG
Signaling Interface
Signaling and Data Transfer Interface
2/7/01 DRAFT
TE
Internet
Other PLMN
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1
Mobile Power up
2
Connect to Web
3
Mobility Handoffs
www.symmetrycomm.com
p. 18
Mobile Internet Summary
•
GPRS is the proven path to the high speed Mobile Internet
•
GPRS packet technologies improve usage efficiency of network resources
•
Creative billing options (e.g. volume based charging)
•
GPRS is a gateway to 3G for operators and equipment vendors
•
Real, immediate revenue opportunities
•
Efficient migration to next generation technologies
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p. 19
Thank You
Symmetry Communications
We Make the Internet Mobile
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p. 20