GPRS TechnologyGPRS Technology

PRESENTED BY-KUSHA MOHARANABRANCH-ECE , 7thsemesterREG NO-1201294254

SEMINAR ONSEMINAR ON

DEPARTMENT OF ELECTRONICS COMMUNICATION ENGINEERING RAAJDHANI ENGINEERING COLLEGE,BBSR

GUIDED BY-Er SOUMYA MISHRA

CONTENTS

• Introduction

• What is GPRS

• How Does GPRS Work?

• Sending and Receiving Packets

• Applications for GPRS• Advantages of GPRS

• Limitation Of GPRS

• Conclusion

IntroductionThe General Packet Radio System (GPRS) is a new service that provides actual packet radio access for mobile Global System for Mobile Communications (GSM) and time-division multiple access (TDMA) users.The main benefits of GPRS are that it reserves radio resources only when there is data to send and it reduces reliance on traditional circuit-switched network elements.Theoretical up to 171.2 kbps transmission speed are achievable using all eight timeslots at the same time.

What is GPRS

GPRS is a new set of GSM-bearer services that provide packet mode transmission within the GSM network & interconnects with external packet data networks.

GPRS Network

How Does GPRS Work?

When a user turns on a GPRS device, typically it will automatically scan for a local GPRS channel. If an appropriate channel is detected, the device will attempt to attach to the network. The SGSN receives the attach request, fetches subscriber profile information from the subscriber’s HLR node, and authenticates the user. Ciphering may be established at this point.

GPRS reference architectureGPRS can be thought of as an overlay network onto a GSM network.

Sending and Receiving PacketsWhen the mobile user sends data, the SGSN routes

the packets to the appropriate GGSN. The GGSN then routes the data according to the current "context" established for the session.

Conversely, packets destined for the user are routed to the GGSN associated with the user's IP address. The GGSN checks the received packets against the current context, identifies the SGSN that is serving the user, and routes the traffic accordingly. The SGSN then forwards the packets to the BSS where the subscriber is located.

Wide-Area Cellular Network Evolution to 3G

Applications for GPRS

CHAT

TEXTUAL AND VISUAL INFORMATION

STILL IMAGES

MOVING IMAGES

WEB BROWSING

Applications for GPRS Contd.. DOCUMENT SHARING/ COLLABORATIVE WORKING

AUDIO

JOB DISPATCH

CORPORATE EMAIL

INTERNET EMAIL

VEHICLE POSITIONING

REMOTE LAN ACCESS

Advantages of GPRS

Faster Data Transfer Rates

Always-On Connection

Robust Connectivity

Broad Application Support

Security Support

Implementing GPRS in Business Network

GPRS Notebook Solutions

• Notebook Connection Using Cell Phone

• GPRS-Enabled Notebook

Corporate Access Using GPRS

Direct Enterprise Network Connection

Internet-Based Connection

Accessing the Corporate Network Via Direct Enterprise Network Connection or Internet-Based VPN Connection

Limitation of GPRS Limited cell capacity for all users There are only limited radio resources that can be deployed for both voice and GPRS calls. Speeds much lower in reality It is unlikely that a network operator will allow all timeslots to be used by a single GPRS user. Support of GPRS mobile terminate by terminals is no ensured There has been no confirmation from any handset vendors that mobile terminated GPRS calls. Transit delays GPRS packets are sent in all different directions to reach the same destination. the result is that potential transit delays can occur. No store and forward There is no storage mechanism incorporated into the GPRS standard, apart from the incorporation of interconnection links between SMS and GPRS.

Conclusion

• GPRS is a new non voice service that allows information (in packets) to be sent and received across a mobile network. Its development is a key step in the evolution of mobile networks to 2G & 3G networks. Altogether, GPRS provides for a better mobile Internet experience that promotes the development of mobile information-centric devices.

References

• GSM, GPRS and EDGE Performance: Evolution Towards 3G/UMTS 2nd Edition by Timo Halonen ,Javier Romero Javier, Juan Melero .

• https://en.Wikipedia.org/wiki/General_Packet_Radio_Service

THANK YOU