GPRSGPRS

What’s in this slide?What’s in this slide? Introduction to Introduction to GPRS.GPRS.HistoryHistoryGPRSGPRS Service. Service.GPRSGPRS Speeds. Speeds.GPRS Mobile Devices.GPRS Mobile Devices.Services of Services of GPRSGPRS..GPRSGPRS in practice. in practice.

Introduction to Introduction to GPRSGPRSGPRS is a service of GPRS is a service of GSMGSM mobiles. mobiles.GPRS-GENERAL PACKET RADIO GPRS-GENERAL PACKET RADIO

SERVICE SERVICE provides direct link to the internet provides direct link to the internet from from GSMGSM phones. phones.

Basically it is used for data trancfer.Basically it is used for data trancfer.GPRS is described as”2.5G”.GPRS is described as”2.5G”.GPRS is packet switched.GPRS is packet switched.

Throughout Throughout 1999-20001999-2000

Network operators place trial and commercial contracts for GPRS Network operators place trial and commercial contracts for GPRS infrastructure.infrastructure.

Summer of 2000Summer of 2000 First trial GPRS services become available.First trial GPRS services become available.Typical single user throughput is likely to be 28 kbps.Typical single user throughput is likely to be 28 kbps.

Start of 2001Start of 2001 Basic GPRS capable terminals begin to be available in commercial Basic GPRS capable terminals begin to be available in commercial quantities.quantities.

Throughout 2001Throughout 2001 Network operators launch GPRS services commercially an roll out Network operators launch GPRS services commercially an roll out GPRS.GPRS.

2001/20022001/2002 New GPRS specific applications, higher bitrates, greater network New GPRS specific applications, higher bitrates, greater network capacity solutions, more capable terminals become available, capacity solutions, more capable terminals become available, fueling GPRS usage.fueling GPRS usage.

20022002 Typical single user throughput is likely to be 112 kbps.Typical single user throughput is likely to be 112 kbps.GPRS Phase 2/EDGE begins to emerge in practice.GPRS Phase 2/EDGE begins to emerge in practice.

2002/20032002/2003 3GSM arrives commercially.3GSM arrives commercially.

HISTORYHISTORY

GPRS ServiceGPRS Service In GPRS data is billed per kilobytes of In GPRS data is billed per kilobytes of

information transceived.information transceived.Through GPRS only those files can be Through GPRS only those files can be

accessed which are written in accessed which are written in XHTML.XHTML.

The main benefit for users of GPRS is The main benefit for users of GPRS is the ‘always on’ characteristic. the ‘always on’ characteristic.

GPRS SpeedGPRS Speed

The theoretical limit for packet switched data is The theoretical limit for packet switched data is approx 170 kbit/sec.approx 170 kbit/sec.Realistic bit rate is 30-70 kbit/sec. Realistic bit rate is 30-70 kbit/sec.

0

10

20

30

40

50

60

GPRS(4+1) CSD HSCSD

downloadupload3-D Column 3

GPRS Speed (cont.)GPRS Speed (cont.) download upload download upload

GPRS (4+1) 57.6 kbit/s 14.4 kbit/s (class 8& 10) GPRS (4+1) 57.6 kbit/s 14.4 kbit/s (class 8& 10) GPRS (3+2) 43.2 kbit/s 28.8 kbit/s (class 10) GPRS (3+2) 43.2 kbit/s 28.8 kbit/s (class 10) CSD 9.6 kbit/s 9.6 kbit/s CSD 9.6 kbit/s 9.6 kbit/s HSCSD 28.8 kbit/s 14.4 kbit/s (2+1) HSCSD 28.8 kbit/s 14.4 kbit/s (2+1) HSCSD 43.2 kbit/s 14.4 kbit/s (3+1) HSCSD 43.2 kbit/s 14.4 kbit/s (3+1)

A change to the radio part of GPRS called A change to the radio part of GPRS called EDGE allows higher bit rates of between 20 EDGE allows higher bit rates of between 20 and 200 kbit/s. The maximum data rates are and 200 kbit/s. The maximum data rates are achieved only by allocation of more than one achieved only by allocation of more than one time slot in the TDMA frame. time slot in the TDMA frame.

GPRSGPRS MOBILE MOBILE DEVICESDEVICESTo use GPRS the service is 'dialed' in a To use GPRS the service is 'dialed' in a

similar manner to a standard data call similar manner to a standard data call at which point the user is 'attached' at which point the user is 'attached' and an IP address is allocated. and an IP address is allocated. The key use for GPRS is to send and The key use for GPRS is to send and receive data to a computer receive data to a computer application such as Email, web application such as Email, web browsing or even telemetry. browsing or even telemetry.

GPRS MOBILE DEVICESGPRS MOBILE DEVICES (cont…)(cont…)The three standard methods to The three standard methods to connect your computer to GPRS connect your computer to GPRS mobile phone aremobile phone are::

1… 1… InfraredInfrared 2… 2… Data-cableData-cable33… Bluetooth … Bluetooth

Services of GPRSServices of GPRS

GPRS provides services like GPRS provides services like Point-to-pointPoint-to-pointPoint-to-multipointPoint-to-multipointSMSSMSAnonymous services.Anonymous services.

GPRSGPRS in Practicein PracticeTelephone operators prices GPRS Telephone operators prices GPRS

relatively cheaply compared to csd.relatively cheaply compared to csd. Typical rates vary wildly, ranging Typical rates vary wildly, ranging

from Euro 1 to Euro 20 per megabyte .from Euro 1 to Euro 20 per megabyte . In the US T-mobile offers US$20 per In the US T-mobile offers US$20 per

month unlimited GPRS.month unlimited GPRS.Orange in UK offers 1 gigabyte Orange in UK offers 1 gigabyte

package for 88 per month.package for 88 per month.

GPRSGPRS SECURITYSECURITY The radio interface is considered to be The radio interface is considered to be relatively secure being controlled by the GSM relatively secure being controlled by the GSM network's security - (SIM card + HLR). network's security - (SIM card + HLR). Security issues arise when data needs to Security issues arise when data needs to leave the GPRS network to be delivered to leave the GPRS network to be delivered to either the Internet or a company LANeither the Internet or a company LAN..

Internet connectivity is the cheapest and Internet connectivity is the cheapest and most common - and here you can take most common - and here you can take charge of security by encrypting sensitive charge of security by encrypting sensitive data. data.

FEATURES OF GPRSFEATURES OF GPRS

Key User Features of GPRSKey User Features of GPRS Key Network Features of GPRS Key Network Features of GPRS

KEY USER FEATURES OF KEY USER FEATURES OF GPRSGPRS

Speed…Speed… Immediacy…Immediacy… New and Better Applications…New and Better Applications…Service Access… Service Access…

KEY NETWORK FEATURES OF KEY NETWORK FEATURES OF GPRSGPRS

Packet Switching… Packet Switching… Spectrum Efficiency… Spectrum Efficiency… Internet Aware… Internet Aware… Supports TDMA and GSM… Supports TDMA and GSM…

APPLICATIONS OF GPRSAPPLICATIONS OF GPRSE-Commerce E-Commerce Banking Banking Financial TradingFinancial TradingUnified MessagingUnified Messaging

GENERAL APPLICATIONS OF GENERAL APPLICATIONS OF GPRSGPRS

Communications—E-mail and fax; Communications—E-mail and fax; Intranet/Internet access Intranet/Internet access Value-added services (VAS)—Information Value-added services (VAS)—Information services; games services; games E-commerce—Retail; ticket purchasing; E-commerce—Retail; ticket purchasing; banking; financial trading banking; financial trading Location-based applications—Navigation; traffic Location-based applications—Navigation; traffic conditions; airline/rail schedules; location finderconditions; airline/rail schedules; location finderVertical applications—Freight delivery; fleet Vertical applications—Freight delivery; fleet management; sales-force automation management; sales-force automation Advertising Advertising

ADVANTAGES OF GPRSADVANTAGES OF GPRSGPRS will enable a variety of new and unique GPRS will enable a variety of new and unique services to the mobile wireless subscriber. services to the mobile wireless subscriber. These mobile applications contain several These mobile applications contain several unique characteristics that enhance the value unique characteristics that enhance the value to the customers. to the customers. First among them is mobility—the ability to First among them is mobility—the ability to maintain constant voice and data maintain constant voice and data communications while on the move. communications while on the move. Second is immediacy, which allows subscribers Second is immediacy, which allows subscribers to obtain connectivity when needed, regardless to obtain connectivity when needed, regardless of location and without a lengthy login session. of location and without a lengthy login session. Finally, localization allows subscribers to obtain Finally, localization allows subscribers to obtain information relevant to their current locationinformation relevant to their current location

LIMITATIONS OF GPRSLIMITATIONS OF GPRSLimited Cell Capacity for All Users Limited Cell Capacity for All Users Speeds Much Lower in Reality Speeds Much Lower in Reality Support of GPRS Mobile Terminate by Support of GPRS Mobile Terminate by Terminals is Not Ensured Terminals is Not Ensured Suboptimal Modulation Suboptimal Modulation Transit Delays Transit Delays No Store and Forward No Store and Forward

CONCLUSION:-CONCLUSION:- From this we conclude that From this we conclude that

the future of GPRS is very bright because it is the future of GPRS is very bright because it is flexible to new functions such as more capacity, flexible to new functions such as more capacity, more users ,new radio networks.more users ,new radio networks.