4g mobile communication
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D.MANOJ KUMAR III. B.Tech, E.C.E N.B.K.R.Institue of Science and technology. P.PALLAVI II. B.Tech, E.C.E Kakatiya Institue of Technology and science. 4G-MOBILE COMMUNICATION. Contents. 1. Introduction 2. Key Features 3. Multimode user terminals 4. Terminal mobility

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4G-MOBILE COMMUNICATION

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4g mobile communication

D.MANOJ KUMAR

III. B.Tech, E.C.E

N.B.K.R.Institue of

Science and technology

P.PALLAVI

II. B.Tech, E.C.E

Kakatiya Institue of

Technology and science

4G-MOBILE COMMUNICATION


Contents

Contents

1. Introduction

2. Key Features

3. Multimode user terminals

4. Terminal mobility

5. Personal mobility

6. Security and Privacy

7. Conclusions


Introduction

Introduction

  • Communication is exchange of information

  • Communication may be wired or wireless

  • Mobile communication has undergone three generations

  • The next generation of mobile communication is fourth generation


Key features of 4g technology

Key Features of 4G Technology

  • High Usability

  • Support for multimedia services at low transmission cost

  • Personalization

  • Integrated services


Multimode user terminals

Multimode user Terminals

  • Multimode user terminals are essential in 4G systems

  • They adopt different networks by reconfiguring themselves

  • These eliminate the need to use multiple terminals or multiple hardware components in a terminal

  • One way of implementing Multimode user terminal is to adopt the software radio approach


An ideal software radio receiver

An ideal software radio receiver


Terminal mobility

Terminal mobility

  • To provide wireless services anytime and anywhere, terminal mobility is a must in 4G systems

  • It allows users to roam across boundaries of wireless networks

  • There are two main issues in this:

    (i). Location management

    (ii). Handoff management

  • Location management tracks and locates a mobile terminal

  • Handoff management maintains ongoing communications when terminal roams


Vertical and horizontal handoff of a mobile terminal

Vertical and Horizontal handoff of a mobile terminal

UMTS COVERAGE

GSM Coverage

WLAN Coverage

vertical handoff

horizontal handoff


Personal mobility

Personal mobility

  • This concentrates on the movement of user instead of user ’s terminals

  • It provides personal communications and personalized operating environments

  • In this each user is given an unique identifier and served by some personal mobile agents

  • These agents acts as mediators between the user and the internet

  • A user belonging to a home network has servers with the updated user profile

  • When the user moves from home network to a visiting network, user ‘s agents will migrate to the new network


Security and privacy

Security and Privacy

  • Different standards implement their security for their unique security requirements

  • The key concern in security designs for 4G networks is flexibility

  • Tiny SESAME is a light weight reconfigurable security mechanism that provides security service for multimedia applications in 4G networks


Conclusions

Conclusions

  • 4G systems will support comprehensive and personalized services.

  • 4G systems must be hastened as some of the video applications can not be contained within 3G

  • 4G networks allows the users to use any system at anytime and anywhere

  • The data rates targeted are 20MBPS and that will be the 4th generation in mobile communication technology


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