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


III. B.Tech, E.C.E

N.B.K.R.Institue of

Science and technology


II. B.Tech, E.C.E

Kakatiya Institue of

Technology and science




1. Introduction

2. Key Features

3. Multimode user terminals

4. Terminal mobility

5. Personal mobility

6. Security and Privacy

7. Conclusions



  • 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


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



  • 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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