GPRS for mobile internet

2/7/01 DRAFT Confidential & Proprietary Information,Copyright 2001, Symmetry Communications Systems

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www.symmetrycomm.comwww.symmetrycomm.com

GPRS for a Mobile Internet

Symmetry CommunicationsWe Make the Internet Mobile

Patrick TaoPatrick TaoVP, Product MarketingVP, Product Marketing

[email protected][email protected]

Feb 14, 2001


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www.symmetrycomm.com

Our Mission

To develop and deliver award winningpacket data solutions that drive rapid adoption of

the mobile Internet.


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Mobile Internet VisionEnabling the Mobile Internet – GPRSEnabling the Mobile Internet – GPRS

Traditional Circuit Switched Wireless

Network

BSSBTS

PSTN

Devices

Diverse Devices andDiverse Devices andUser StylesUser Styles

Mobile InternetMobile Internet

Independent and Independent and Affiliated Content & Affiliated Content &

Application ProvidersApplication Providers

Enterprise NetworkseBusiness Powered eBusiness Powered

CorporationsCorporations

The Wired Internet

Traditional Mobile Voice


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Worldwide Cumulative Subscribers

Mobile Data Market Opportunity

Source: CE/NSS Forecast used for Cumulative Subscribers

Mobile Wireless is the Next Telecom RevolutionMobile Wireless is the Next Telecom Revolution


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New Revenue Opportunities

Devices

Grow Market Share and Revenues through Network of…Grow Market Share and Revenues through Network of…

• Personalized• Customized• mBusiness• mConsumer

RetailCorp Fin etc.

Benefits

• Lower churn

• Higher ARPUs

Applications & Services

ContentAOLYahoo!

YellowPages

etc.

• Device optimized• Location based• Timely• Highly segmented• Open access

Characteristics

• Rich Applications

• High-value content

Subscribers


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Cut Operating and Network CostsDeploy Networks that Leverage IP TechnologiesDeploy Networks that Leverage IP Technologies

Applications & Services

IP WCDMA.

Network

Migrate from voice-only mobility to mobile eCommerce

Evolutionary transition to IP networks

Higher Speed radios

Optimize network for Mobile Internet services and applications

Subscribers

Content

Devices


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AR

PU

*

Transition PhaseTransition Phase

Voice-based Business

Voice-based Business

Information-based Business

Information-based Business

Voice ServicesRevenues

Voice ServicesRevenues

InformationService Revenues

InformationService Revenues

Net RevenuesNet Revenues

“Bottoming out”“Bottoming out”

*ARPU: Average Revenue per Unit in Service

Operator Business Imperative

2G2G 2.5G Systems2.5G Systems 3G Systems3G Systems


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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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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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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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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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Services Enabled by GPRS

• 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

Everything you can do on the Internet today Everything you can do on the Internet today but but Anywhere, Anytime, Anyplace:Anywhere, Anytime, Anyplace:


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GPRS Architecture

SGSN InternetGGSN

A

Gb

GrGs Gc

Gi

Gp

Other PLMN

GnBSC

BG

TE

MSC/VLR HLR

EIR

SMS-GMSCSMS-IWMSC SM-SC

Gd

D

E C

Gf

Signaling Interface

Signaling and Data Transfer Interface

R Um Abis

BTS

BSC

MTTE

BTSMTTE

BTSMTTE

SGSN

Gn

PSTN, ISDNetc

AuC

H

F

BG

BSS

Frame RelayNetwork

Cost Efficient Mobile Internet Upgrade of GSM and Cost Efficient Mobile Internet Upgrade of GSM and TDMA NetworksTDMA Networks


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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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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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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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GPRS Network Functions

SGSN InternetGGSN

A

Gb

GrGs Gc

Gi

Gp

Other PLMN

GnBSC

BG

TE

MSC/VLR HLR

EIR

SMS-GMSCSMS-IWMSC SM-SC

Gd

D

E C

Gf

Signaling Interface

Signaling and Data Transfer Interface

R Um Abis

BTS

BSC

MTTE

BTSMTTE

BTSMTTE

SGSN

Gn

PSTN, ISDNetc

AuC

H

F

BG

BSS

Frame RelayNetwork

Mobile Power up

Connect to Web

Mobility Handoffs

1

2

3


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• 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

Mobile Internet Summary


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Thank You

Symmetry CommunicationsWe Make the Internet Mobile

GPRS for mobile internet

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