1. 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

2. Contents 1. Introduction 2. Key Features 3. Multimode user terminals 4. Terminal mobility 5. Personal mobility 6. Security and Privacy 7. Conclusions

3. Introduction Communication is exchange of information Communication is exchange of information Communication may be wired or wireless Communication may be wired or wireless Mobile communication has undergone three generations Mobile communication has undergone three generations The next generation of mobile communication is fourth generation The next generation of mobile communication is fourth generation

4. Key Features of 4G Technology High Usability High Usability Support for multimedia services at low transmission cost Support for multimedia services at low transmission cost Personalization Personalization Integrated services Integrated services

5. Multimode user Terminals Multimode user terminals are essential in 4G systems Multimode user terminals are essential in 4G systems They adopt different networks by reconfiguring themselves They adopt different networks by reconfiguring themselves These eliminate the need to use multiple terminals or multiple hardware components in a terminal 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 One way of implementing Multimode user terminal is to adopt the software radio approach

6. An ideal software radio receiver

7. Terminal mobility To provide wireless services anytime and anywhere, terminal mobility is a must in 4G systems 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 It allows users to roam across boundaries of wireless networks There are two main issues in this: There are two main issues in this: (i). Location management (i). Location management (ii). Handoff management (ii). Handoff management Location management tracks and locates a mobile terminal Location management tracks and locates a mobile terminal Handoff management maintains ongoing communications when terminal roams Handoff management maintains ongoing communications when terminal roams

8. 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

9. Personal mobility This concentrates on the movement of user instead of user ’s terminals This concentrates on the movement of user instead of user ’s terminals It provides personal communications and personalized operating environments It provides personal communications and personalized operating environments In this each user is given an unique identifier and served by some personal mobile agents 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 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 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 When the user moves from home network to a visiting network, user ‘s agents will migrate to the new network

10. Security and Privacy Different standards implement their security for their unique security requirements Different standards implement their security for their unique security requirements The key concern in security designs for 4G networks is flexibility 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 Tiny SESAME is a light weight reconfigurable security mechanism that provides security service for multimedia applications in 4G networks

11. Conclusions 4G systems will support comprehensive and personalized services. 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 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 4G networks allows the users to use any system at anytime and anywhere The data rates targeted are 20MBPS and that will be the 4 th generation in mobile communication technology The data rates targeted are 20MBPS and that will be the 4 th generation in mobile communication technology