4G - Mobile communications

Overview Where are we? What is 4G? Back ground of 4G Why we Want to go? 3G Vs 4G Applications Advantages and limitations Conclusion

TYPES OF CELLULAR COMMUNICATIONS 1G-First Generation Speech 2G-Second Generation SMS , MMS CDMA , GPRS , EDGE Voice Mail 3G-Third Generation Wireless Internet Video Calling Mobile TV

What is 4g? 4th generation cellular communication. FEATURES:- High transfer rate. Internet access any where. Ability to move around with the same IP address. Utilization of smart antenna . High resolution mobile TV .

Back ground:- New mobile generations have appeared about every ten years since the first move from 1981 analog (1G) to digital (2G) transmission in 1992. This was followed, in 2001, by 3G multi-media support, spread spectrum transmission and at least 200 kbit/s peak bit rate, in 2011/2012 expected to be followed by "real" 4G, which refers to all-Internet Protocol (IP) packet-switched networks giving mobile ultra-broadband (gigabit speed) access.

Why we Want to go? High transfer rate Internet access any where Ability to move around with the same IP address Utilization of Smart antennas High resolution Mobile TV

3G Vs 4G Technology 3G 4G Data Transfer Rate 3.1MB /sec 100MB/sec Internet services Broadband Ultra Broadband Mobile -TV Resolution Low High Bandwidth 5 - 20 MHz 100 +MHz Frequency 1.6- 2 GHZ 2 – 8 GHz Network Architecture Wide Area Network Hybrid Network

Applications of 4G Life-Saving: Telemedicine Video Conferencing Telegeoprocessing: GIS,GPS Better Usage of Multimedia Applications

Advantages and limitations Higher band width. Better response time i.e, 10 times more than 3G technology. Works at 2.6GHz frequency which means better coverage even though it uses the same tower where the receiver and transmitter for 3G is. More flexible. LIMITATIONS:  it more expansive than 3G. It is less secure i.e.,Obtaining information from everyday people illegally becomes easier.

IP + WPAN + WLAN + WMAN + WWAN + any other stragglers = 4G Conclusion This is a need which demands a solution. Today’s wired society is going wireless, and it has a problem.4G is the ANSWER. IP + WPAN + WLAN + WMAN + WWAN + any other stragglers = 4G