GPRS

WELCOME TO THE WORLD OF

INTERNET

Unit – 3

Vipul joshi

1

CONTENTS OF PRESENTATION

A) GPRS and packet data network,

B) GPRS network architecture,

C) GPRS network operation,

D) Data services in GPRS,

E) Applications of GPRS,

F) Billing and charging in GPRS

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“ GPRS “

GPRS- General Packet Radio Service

provides a direct link into the Internet

from a GSM phone

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INTRODUCTION TO GPRS

GPRS will undoubtedly speed up a handset's

Internet connection - but it remains to be seen

exactly how much speed can be achieved out of

the system

GPRS works by aggregating a number of

separate data channels. This is possible because

data is being broken down into small 'packets'

which are re-assembled by the receiving handset

back into their original format.

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INTRODUCTION (CONT…)

GPRS stands for General Packet Radio Service ,

and is a relatively low cost technology that

offers packet-based radio service and allows

data or information to be sent and received

across mobile telephone networks.

GPRS provides a permanent connection where

information can be sent or received immediately

as the need arises, subject to radio coverage.5

CONSTRAINTS WITH EXISTING NETWORK

• Data Rates too slow – about 9.6 kbps

• Connection setup time too long

• Inefficient resource utilization for bursty

traffic

• Proves expensive for bursty traffic

utilization

• No efficient method for packet transfers

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COMPARISON OF GSM & GPRS

GSM GPRS

Data Rates 9.6 Kbps 14.4 to 115.2

Kbps

Modulation

Technique

GMSK GMSK

Billing Duration of

connection

Amount of

data

transferred

Type of

Connection

Circuit – Switched

Technology

Packet -

Switched

Technology7

GPRS IN INDIA

BPL Mobile

Bharti Cellular

Hutchison Max

Hutchison Essar

Idea Cellular

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A) GPRS AND PACKET DATA N/W

Capacity and other end user aspects : It has ability to offer

data speeds of 14.1 Kbps to 171.2 Kbps, which allow easy Internet

access.

QoS (Quality of Service) :

Service precedence : is the priority of a service in relation to

another service. High , normal and low

Reliability : loss, duplication and mis- sequencing

Delay : end to end transfer time

Throughput : Maximum bit rate

Integral Part of the future 3G Systems : the use of GPRS in

GSM n/w is known as 2.5G with limited Internet accessibility

speed.

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B) GPRS ARCHITECTURE & N/W ENHANCEMENT

GPRS Subscriber Terminals

GPRS BSS

GPRS Networks Node

GPRS Mobility Management

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