4-G

Reshma Johney

Overview

the hunger of the public to be able to not just

get more content to their

portable devices, but to

get it there faster

Defining

•4G -fourth generation of cellular wireless standards.•successor to 3G and 2G families of standards.

•comprehensive and secure all-IP based solution where facilities such as IP telephony, ultra-broadband Internet access, gaming services and streamed multimedia may be provided to users.

evolution pattern of technology based on their prescribed Generations.

•Hyper LAN- set of wireless LAN

•1G-First Generation : Speech

•2G-Second Generation : SMS , MMS, CDMA , GPRS , EDGE, Voice Mail

•3G-Third Generation : Wireless Internet, Video Calling, Mobile TV, Hyper Lan- set of wireless Lan.

Why do we move toward 4G ?

•Limitation to meet expectations of applications like multimedia, full motion video, wireless teleconferencing : Wider Bandwidth

•Difficult to move and interoperate due to different standards hampering global mobility and service portability

•Primarily Cellular (WAN) with distinct LANs’; need a new integrated network

•Limitations in applying recent advances in spectrally more efficient modulation schemes

•Need all digital network to fully utilize IP and converged video and data

High transfer rate

Internet access any where

Ability to move around with the same IP address

Utilization of Smart antennas

High resolution Mobile TV

NEED

About 4G

4G usually refers to the fourth generation mobile communications network that

offers speeds that are around 10 times faster than the current third-generation (3G) networks. It can be divided into two broad groups – the Long Term Evolution (LTE) and Worldwide Interoperability for

Microwave Access (WiMax). The LTE supports speeds of more than 100Mbps

downstream and 50 Mbps upstream while the WiMax is a telecommunications

technology that can transmit over much greater distances and handle more data,

than the existing WiFi technology.

3G vs. 4G

When it comes to speed and data handling, the current 3G can

transfer data with speeds of up to 2Mbps depending on several

different factors. However, users of 4G, WiMax, can expect a much

faster data transfer rate of up to 6Mbps and upload speeds of up to 1Mbps although LTE is reported as possessing even greater speeds

(100 Mbps and 50 Mbps respectively) theoretically.

GOAL OF 4G

•more bandwidth will be required•4G networks will no longer have a circuit switched subsystem as current 2G and 3G networks. Instead, the network is based purely on the Internet Protocol (IP).

 4G networks will go far beyond this by mainly

improving three things:•Air Interface Technology•Channel Bandwidth•MiMo

Currently, advertised 4G is really just late-stage 3G. The two formats designated by the

International Telecommunication Union (ITU) as “true 4G

LTE Advanced (Long Term Evolution Advanced)

WiMAX Release 2

4-G consists of 3 technologies

HSPA+LTE

WiMAX

Communication Architecture

Architecture Of 4GOSI –MODEL OF 4G

4-G IN FUTURE