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SHRI VAISHNAV INSTITUTE OF

MANAGEMENTPRESENTATION

ON

LAND BASED WIRELESS NETWORKS

GUIDED BY SUBMITED BY

SIR. AJAY MALPANI SNEHANSHU PANDEY

MBA, SEM-I

SECTION- A

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CONTENTS

INTRODUCTION

TYPES OF LAND BASE WIRELESS SYSTEM

DEFINATIONS

HOW IT WORKS

ADVANTAGES

DISADVANTAGES

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LAND BASED WIRELESS

NETWORK

A land based ne twork refersA land based ne twork refers

to the network that canto the network that can

transmit information throughtransmit information through

towers(land based) or anytowers(land based) or any

other land basedother land basedinfrastructure that caninfrastructure that can

faci l i tate the nee d of faci l i tate the nee d of

transmissiontransmission ..

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LAND BASED WIRELESS NETWORK CAN

CLASSIFIED IN TWO TYPE.

Packet radio network

Cellular services

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PACKET RADIO NETWORK

Packet radio is a communication method that

transmits packets of data over a network

via RF signals.

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HOW IT WORK

A special transceiver known as an RF modem

breaks down data into pieces or packet. Theypicked by radio tower and forwarded to the

proper address. If a packet is not received in

good condition, the received service

automatically ask the sending modem to

resend the missing or corrupted packets.

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ADVANTAGES

a. Transmission cost are based on data packets, notconnected time

b. There is no roaming charges.

c. Transmissions are digitally encoded for greatersecurity than cellular communication offers.

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DISADVANTAGES

a. Communication is slow.

b. Radio modem can be used only with e-mailapplications. There is no fax capability.

c. Radio modem are expensive and bulky.

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CELLULAR SERVICES

In cellular services communication takes placethrough a grid of transmitters and receivers(transceivers), each one called cell. A signalfrom a cellular handset is handled by thenearest cell.

Frequencies are divided into cellbands with a buffer zone to prevent jammingof neighboring cells frequencies.

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HOW IT WORKS

LOG-ON

a. Each cellular handset is assigned a unique identity ornumeric arrangement module(NAM)

b. This identity is based on its home area.

c. As mobile moves across cells it continuously send msg tomobile telephone switching office(MTSO) to confirm itslocation.

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MONITORING

Once the handset is power on, it

started getting information from local pagingchannels. It select an available channel and

goes into an ideal state. In the ideal state it

liento the data be transmitted over the

channel.

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INCOMING CALLS

When incoming call is

received by the MTSO(mobile telephoneswitching office). It send the signal to all the

cell in that traffic area. The set received signal

and respond to the MTSO. The MTSO will

inform the set to use specific channel to

receive the call.

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OUTGOING CALLS

To make a call, the user

enter the telephone number and transmit it toMTSO by an available access channel.

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THANK YOU