Where are we?

Where do we Want to go?

3G vs 4G

4G Process

Challenges

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

High transfer rate

Internet access any where

Ability to move around with the same IP address

Utilization of Smart antennas

High resolution Mobile TV

GSM/TDMA Time Division Multiplexing based access

CDMA Code Division Multiplexing based access

OFDM Orthogonal Frequency Division Multiplexing

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

3G Vs 4G

Machine-to-machine transmission

-Sensors (measure parameters)

-Tags (read/write equipment)

Consented to achieve 500bit/s/Hz/km2 -HSDPA (High Speed Download Packet Access)

-MIMO

WWI agreed peak rates of 100Mbit/s in mobile

situations1Gbit/s in nomadic/pedestrian situations

Service Evolution and Service Evolution and ConsensusConsensus

4G Process

To operate large number of users

- Parent coverage

- Pico-cell coverage

Mobile IP VoIP Ability to move around with the same IP address IP tunnels Intelligent Internet

Presence Awareness Technology Knowing who is on line and where

Radio Router Bringing IP to the base station

Smart Antennas Unique spatial metric for each transmission

Key Technologies Required for 4G

OFDMA

-Time domain

-Space domain

-Frequency domain

Key Technologies Required for 4G

MIMO

Signal multiplexing between antennas

-Smart antennas

Well suited to OFDM

Key Technologies Required for 4G

Coverage Parent coverage ------ Pico-cell coverage

Challenges Sufficient spectrum with associated sharing mechanisms.

Coverage with two technologies.

Caching technology in the network and terminals.

OFDM and MIMO.

IP mobility.

Multi-technology distributed architecture.

Fixed-mobile convergence (for indoor service).

Network selection mechanisms.

Life-Saving: Telemedicine

Video Conferencing

Telegeoprocessing: GIS,GPS

Better Usage of Multimedia Applications

Voice over Internet Protocol (VoIP) for IPv6

Mobile Intelligent Internet and multi media applications Seamless Roaming, substantially high and selectable user

bandwidth, customized QoS, Intelligent and responsive user interface

Mobile IP, Radio Routers, smart Antennas Continued advances and challenges from 1G -> 4G

Modulation techniques, transreceiver advances, fast manipulations, user interfaces, IP tunelling and firewalls

Spectrum usage, regulatory decisions, “one” standard, authentication and security, multi disciplinary co-operation

Packing so much intelligence in smaller and smaller physical space, esp. User Equipment (UE)

IP + WPAN + WLAN + WMAN + WWAN + any other stragglers = 4G

Any Queries?

Thank U