A Critique of the Proposed National Education Policy Reform
4G-Technology ppt.pptx..................
1.
2.
3. 4G technology is the fourth generation of wireless technology
available from mobile service providers. This technology, also
sometimes called "ultra mobile broadband," is designed to
provide greater data transfer rates and more secure connections.
: Mobile Multimedia
: Anytime / Anywhere
: Global Mobility Support
: Integrated
: Customized Personal
Network
4. 1G refers to the analog signal used by
cellular towers in the 1980s.
2G technology in the 1990s upgraded the
analog signal to digital.
3G technology, in the early 2000s, made use
of electromagnetic wavelengths to broadcast a
wireless broadband signal.
4G technology further upgrades these
networks with faster information transfer
times, heightened security, and greater
information exchange abilities.
5. DIFFERENCE BETWEEN 3G &
4GConnecti
vity
Connectivity lowers
considerably in case of
weak signal reception.
Better connectivity as a
result of a wide use of
femtocells to make
denser & cheaper
infrastructure.
Voice &
Data
Support
Simultaneous voice and
data support.
Simultaneous voice
and data support at
higher data rates.
Speed 384 kbps for uplink speed
in R99. For HSDPA
downlink is 14.4 Mbps. For
HSUPA, the uplink speed
is 5.76 Mbps1.
100 Mbps for high
mobility and 1 Gbps for
low mobility
communication.
Standar
ds
WCDMA & CDMA-2000
standards.
Multiple radio
standards unified into
single IP network.
Antenna Supports up to 4 antenna Increased support for
multi-antenna
technology. Results in
higher Signal-to-Noise
6.
7. Newer cell phones can work with 4G
technology.
Many modern smart phones include Wifi,
3G and 4G technology.
Some tablets use 4G mobile technology.
4G technology allows for faster data
transfer between cell towers
8. PURPOSE OF 4G
For accessing information-heavy applications
like High-Definition television signals & real
time Video chat
9. 4G wireless service may utilize
modems, mobile phones, and other
devices like laptop computers.
Mobile hotspots offer wireless
connections for multiple devices,
including computers, tablets, and
handheld gaming systems.
10. Controversy Over The
Standard
To reach the standards given
by International
Telecommunications Union
Radio communication
sector(ITU-R) , new systems
which are used like LTE ,
WiMAX & other technologies
like Bluetooth, 802.11 etc.
13. How 4G Works ?
• The IP address is based on IPv6.
• IPv4: X . X . X . X (32 bits)
example: 216.37.129.9
• IPv6: 4 × IPv4 (128 bits)
• example:
216.37.129.9 , 79.23.178.229 , 65.198.2.10 ,
192.168.5.120
Home
Address
Care of
Address
Mobile IP
address
Local network
address
14. COUNTRIES USING 4G
A. Telecom Companies Developing 4G
1. NTT DoCoMo (JAPAN)
2. DIGIWEB (IRELAND)
3. SPRINT (CHICAGO)
4. VERIZON WIRELESS
5. VODAFONE GROUP
6. AMERICAN WIRELESS PROVIDER
CLEARWIRE
ETC..
16. Spectrally efficient system.
High network capacity
Nominal data rate at high speeds
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)
18. High usability:
anytime,
anywhere, and
with any
technology.
•Support for
multimedia
services at low
transmission cost
& faster.
•Higher
bandwidth,
tight network
security.
20. The idea of WWWW, World
Wide Wireless Web, is started
from 4G technologies. The
following evolution will based
on 4G and completed its idea
to form a Real wireless world.
Thus, 5G should make
an important difference and
add more services and benefit
to the world over 4G. 5G
should be a more intelligent
technology that interconnects
the entire world without
limits.
21. Today’s wired society is going wireless, and it
has a problem. 4G is the answer.
4G seems to be a very promising generation of wireless
communication that will change the people’s life in the
wireless world.
4G is launched in 2010 and the world is looking forward
for the most intelligent technology that would connect the
entire globe.
