4g technology

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4G

GOING TO TELL ABOUT…Fourth Generation Wireless

Communication.Evolution of Wireless Standards.Limitation.Objectives.Important 4G Components.Network Architecture.

What is fourth generation (4G) mobile systems?

Fourth generation mobile communications systems that are characterized by high-speed data rates at 20 to 100 Mbps, suitable for high-resolution movies and television, virtual . Initial deployments are anticipated in 2006-2010.

INTERNET GOES TO MOBILE

Generations Timeline

FROM 1G TO 4G

3G Realities/Limitations A recent study by Herschel Shosteck Associates noted

that operators that pay large amounts for spectrum will have to charge end users so much that adoption of 3G will be slow.

Another study by Strategy Analytics agreed, predicting that, while wireless data revenues will soar, 3G networks will account for less than a quarter of that revenue by 2010. So-called 3G killer apps such as multimedia won't succeed, the second study said.

Pent-up demand: Now there's the rub. Even NTT DoCoMo doesn't think there's much pent-up demand among consumers for 3G multimedia services, so it will target its initial 3G offering at business -- and price it accordingly.

OBJECTIVES OF 4GSpectrally efficient system (8 bits/s/Hz) High network capacity (atleast 10 times greater than 3G) Nominal data rate at high speeds (100Mbps at stationary

conditions and 20Mbps at 100miles/hr) Smooth handoff across heterogeneous network Seamless connectivity and global roaming across

multiple networks High quality of service for next generation multimedia

support (real time audio, high speed data, HDTV video content, mobile TV, etc)

Interoperable with the existing wireless standards All IP system, packet switched network

4G Provides Mobility & Capacity

4G

SERVICE DEVELOPEMENT

Wireless generations: User’s view

CONTD…

IMPORTANT COMPONENTS OF 4GMulti Antenna SystemSoftware Defined RadioAdaptive Modulating And CodingAccess SchemesIPv6

4G: An evolvable, programmable, multi-tiermulti-device network

BASIC MODEL