o Where are we?
o Where do we want to go?
o What is 4-G
o 3-G Vs. 4-G
o Advantages of 4-G
o Application of 4-G
o Which countries have 4-G
o 4-G in India
o Future Prospects
Where are we?Where are we?
◦ SMS , MMS
◦ CDMA , GPRS , EDGE
◦ Voice Mail
◦ Wireless Internet
◦ Video Calling
◦ Mobile TV
o Refers to the first-generation of wireless telephone technology,
o These are the analog telecommunications standards that were
introduced in the 1980s.
o The radio signals that 1G networks use are analog.
o1G Poor voice quality
oPoor battery life
oLarge phone size
oFrequent call drops
oPoor handoff reliability.
o Is based on GSM or in other words global
system for mobile communication.
o Was launched in Finland in the year 1991
o 2g networks use digital signals.
o enabled services such as text messages,
picture messages and MMS
oRequires strong digital signals to help mobile phones work. If there is no
network coverage in any specific area, digital signals would be weak.
o2G The GSM is a circuit switched, connection oriented technology,
where the end systems are dedicated for the entire call session. This
causes inefficiency in usage of bandwidth and resources.
oThe GSM-enabled systems do not support high data rates.
oThey are unable to handle complex data such as video.
o The 3G technology adds multimedia facilities to 2G phones by allowing
video, audio, and graphics applications. Over 3G phones, you can watch
streaming video or have video telephony.
o The idea behind 3G is to have a single network standard instead
o 3G promises increased bandwidth, up to 384 kbps when the device holder is
walking, 128 kbps in a car, and 2 Mbps in fixed applications.
oHigh bandwidth requirement
oHigh spectrum licensing fees
Where do we Want to go?Where do we Want to go?
High transfer rate
Internet access any where
Ability to move around with the same
Utilization of Smart antennas
High resolution Mobile TV
What is fourth generation (4G)?
o Characterised by high-speed data rates.
o In 4G the download speed is up to 100
Mbps for moving users and 1 Gbps for
o Will allow users to download a full-length
feature film within five minutes
o Will also be able to stream high-definition
television and radio to hand-held devices
o 4G is adoption of packet switching instead
of circuit switching in voice and video calls
o With packet switching, resources are only
used when there is information to be sent
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
The basic difference between 3G and 4G is in data transfer and signal quality.
The highest download and upload speed in 3G are 14 Mbps and 5.8 Mbps
Advantages of 4-GAdvantages of 4-G
o Affordable communication services.
o High speed,high capacity and low cost per bit.
o Support for interactive multimedia, voice , streaming video,
Internet and other broadband services.
o Global access, Service portability and scalable mobile services
and variety of quality of services provided.
o Better spectral efficiency.
o seamless network of multiple protocol and air interfaces.
oBetter Usage of Multimedia Applications
oVirtual Presence: 4G system gives mobile users a "virtual presence" (for
example, always-on connections to keep people on event).Video
oVirtual navigation: a remote database contains the graphical representation
of streets, buildings, and physical characteristics of a large metropolis. Blocks
of this database are transmitted in rapid sequence to a vehicle
o Tele- geoprocessing: Queries dependent on location information of several
users, in addition to temporal aspects have many applications.e.g:GIS,GPS
o4G in normal life .
Sensor on public vehicle.
Applications of 4GApplications of 4G
4-G in INDIA4-G in INDIA
o Has already begun the process of introducing 4G
o India is among the latecomers in 3G
o It is felt that by the time the implement 3G fully, 4G technologies such as LTE
will be available commercially.
o It has taken three years for the government to decide on 3G-spectrum
o 4G could face the same delay unless India wants to catch up with the rest of
o Battery usage is more
o Hard to implement
o Need complicated hardware
o The equipment required to implement a next generation network is still
o Carriers and providers have to plan carefully to make sure that
expenses are kept realistic.
Future ProspectsFuture Prospects
o 4G is coming quicker.
o Fast internet access to both stationery and mobile users.
o 4G can be efficiently combined with cellular technologies to make
consistent use of smart phones and also create video blogs.
o This gives the manufactures the opportunity to produce more
affordable user friendly 4G compatible devices.
o 4G is capable of providing new horizon of opportunity for both
existing and startup telephone companies.
o Integrating all the promised services is a challenge.
Challenges in migration to 4G.
High data-rate services and low per bit transmission cost.
Meet the demand of the diverse users.
o Competition with the next forth coming 5G.
5G technology is providing large broadcasting of data in Gigabit which
supports almost 65,000 connections.
5G technology would provide better use of available bandwidth.
4G can be best described in one word “MAGIC”, which stands
Global mobility support,
Integrated wireless and personalized services.
Though 4G is facing challenges and problems we believe that future
research will overcome these challenges and integrate newly
developed services to 4G networks making them available to
everyone, anytime and everywhere.