Exam (elaborations)
Periyar University BSC CS MOBILE COMMUNICATION OR MOBILE COMPUTING YEAR 3rd
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Notes for mobile communication or Mobile computing with a neat and easily understandable sentance.
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SAKTHIKAILASH WOMEN’ S COLLEGE - DHARMAPURIDEPARTMENT OF COMPUTER SCIENCE
CLASS : III-B.Sc COMPUTER SCIENCE
SUBJECT NAME : ELECTIVE – MOBILE COMPUTING
PAPER CODE : 17UCSE07
SEMESTER : VI
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, ELECTIVEIII-PAPERI-MOBILECOMPUTING
UNIT – I
Introduction: Applications - A Simplified Reference Model. Wireless Transmission: Frequencies
forradio transmission - Signals - Antennas - Signal Propagation - Multiplexing - Modulation -
SpreadSpectrum-CellularSystem.
UNIT-II
MediumAccessControl:MotivationforaSpecializedMAC-Hiddenandexposedterminals-
Nearandfarterminals-SDMA-FDMA-TDMA-FixedTDM-ClassicalAloha-SlottedAloha-
CarrierSenseMultiple Access - Demand assigned Multiple Access - PRMA Packet Reservation Multiple
Access -Reservation TDMA - Multiple Access with Collision Avoidance - Polling - Inhibit Sense
MultipleAccess.CDMA-SpreadAlohamultipleaccess.ComparisonofS/T/F/CDMA.
UNIT-III
Telecommunication Systems: GSM - Mobile Services - System Architecture - Radio Interface -Protocols-
LocalizationandCalling-Handover-Security.UMTSandIMT2000:UMTSreleasesandstandardization-
UMTSSystemArchitecture-UMTSRadioInterface-UTRAN-UMTSHandover.
UNIT-IV
Satellite System: History - Applications - Basics - Routing- Localization - Handover. Wireless LAN:IEEE
802.11- SystemArchitecture - ProtocolArchitecture - Physical Layer- MediumAccessControlLayer.
Bluetooth: User scenarios - Architecture - Radio Layer - Baseband Layer - Link ManagerProtocol.
UNIT-V
MobileNetworkLayer:MobileIP-Goals,Assumption,andRequirements-EntitiesandTerminology-IP Packet
delivery - Agent discovery - Registration. Dynamic Host Configuration Protocol -
MobileTransportLayer:TraditionalTCP-CongestionControl-SlowStart-FastRetransmit.
TEXTBOOK
1. JochenSchiller,"MobileCommunications",2ndEdition,eighthimpression,PearsonEducation,2011.
REFERENCE BOOKS
1. WilliamStallings,"WirelessCommunicationandNetworks",2ndEdition,PearsonEducation,2005.
2. TheodoreRappaport,"WirelessCommunications:PrinciplesandPractice",PrenticeHallCommunications,1996.
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, UNIT-I
INTRODUCTION:
• A technology that is capable of providing an environment which enables users to transmit data
from one device to other device without the use of any physical link/cables is known as Mobile
Computing.
• It means, data transmission is done wireless-ly with the help of wireless devices such as
mobiles, laptops etc.
• Whenever any device is connected to a network without being connected physically over a link
or cable, data transmission such as messages, voice recording, videos etc. can be done be done
by using the concept of mobile computing.
• Mobile Computing technology helps users to access and transmit data from any remote
locations without being present there physically.
• Thus, having such a big coverage diameter, it is one of the fastest and most reliable sectors of
computing technology field.
• Mobile Communication is the framework that is responsible behind the working of mobile
computing technology.
• It ensures the consistency and reliability of communication process through this framework.
• Mobile communication framework includes communication devise such as mobiles, laptops, as
rules of conduct, fitness etc. They are responsible for delivering of smooth communication
process.
• Mobile communication can be of one of the following form as mentioned below.
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, 1. Mobile and Wired : In this configuration, Some of the devices are wired and some are mobile
in nature. For Example : Laptops.
2. Fixed and Wired : In this configuration, The devices are fixed at a position and are connected
through a physical link for communication. For Example : Office/Desktop Computer.
3. Mobile and Wireless : In this configuration, devices can communicate(data transmission) with
each other irrespective of their position and can connect to any network without the use of any
wired device. For Example : WiFi Dongle.
Applications : Mobile Computing
• Some of the major field in which mobile computing can be applied are:
o Web or Internet access.
o Global Position System(GPS).
o Emergency services.
o Entertainment services
o Educational services.
In many fields of work, the ability to keep on the move is vital in order to utilise time
efficiently. Efficient utilisation of resources (ie: staff) can mean substantial savings in transportation
costs and other non quantifyable costs such as increased customer attention, impact of on site
maintenance and improved intercommunication within the business.
The importance of Mobile Computers has been highlighted in many fields of which a few are
described below:
• For Estate Agents
Estate agents can work either at home or out in the field. With mobile computers they can be
more productive. They can obtain current real estate information by accessing multiple listing
services, which they can do from home, office or car when out with clients. They can provide clients
with immediate feedback regarding specific homes or neighborhoods, and with faster loan approvals,
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