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TECHNOLOGY
PRESENTATION ON
PREPARED BY:-Neeraj Kumar 11ejjec028 Ece 4th Year
ACKNOWLEDGEMENTS
First of all we would like to give a sincere thanks to JIT Collge who gave us such a big platform to share our knowledge & Research on the topic 4G.
What is 4G technology?
Evolution of 4G technology
Features of 4G Technology
4G Networks & Bandwidth
Communications architecture
• Wi-Max
Comparison of 3rd & 4th generation.
• Wi-Max vs. Wi-Fi
Application & Limitation of 4G.
4G in India
contents
4G, an acronym for Fourth-Generation Communications System, is a term used to describe the next step in wireless communications.
4G is not one defined technology or standard, but rather a collection of technologies and protocols aimed at creating fully packet-switched networks optimized for data.
4G networks are projected to provide speeds of 100 Mbps while moving and 1 Gbps while stationary.
It will provide a comprehensive IP solution where voice , data and multimedia can be given to user on “anytime , anywhere” basis.
WHAT IS 4G TECHNOLOGY???
Evolution of 4G technology
3G2G1G0G
Features of 4G Technology
1.Support for multimedia services like teleconferencing and wireless internet.
2.Tight network security.
3.Wider bandwidths and higher bitrates.
4.Entirely packet-switched network.
5.Global mobility and service portability.
6.Support for previous wireless technologies.
7.High internet speed.
Virtual chat on 4G
4G Networks & BandwidthThe 4G network will encompass all systems from various networks, public to private; operator-drivenbroadband networks to personal areas; and ad hoc networks.
The 4G systems will interoperate with 2Gand 3G systems, as well as with digital (broadband) broadcasting systems. In addition, 4G systems will befully IP-based wireless Internet.
4G Networks & Bandwidth
4G systems will use a bandwidth of up to 20 MHz, i.e. the channel offersfour times more bandwidth than channels of current systems.
most 4G systems will be scalable, for example in steps of 1.25 MHz. It can therefore beexpected that 4G channel sizes will range from 5 to 20 MHz.
Communications ArchitectureBroadcast layer:
fix access points, (i.e.) cell tower connected by fiber, microwave, or satellite (ISP)
Ad-hoc/hot-spot layer: wireless LANs (i.e.
internet at Starbuck’s)
Communications Architecture
Personal Layer Gateway: devices that connect to
upper layers; cell phone, fax, voice, data modem, MP3 players, PDAs
Info-Sensor layer: environmental sensors
Fiber-optic wire layer: high speed
subterranean labyrinth of fiber optic cables and repeaters
Communications ArchitectureAd Hoc Networks
Spontaneous self organization of networks of devices
Not necessarily connected to internet
4G will create hybrid wireless networks using Ad Hoc networks
Form of mesh networking–Very reliable
Wi-Max World Interoperability for Microwave
Access There are two main applications of
WiMAX:
1) Fixed WiMAX (IEEE 802.16-2004) - Fixed WiMAX applications are point-to-multipoint enabling the delivery of last mile wireless broadband access as an alternative to cable and DSL for homes and businesses.
2) Mobile WiMAX (IEEE 802.16e-2005) - Mobile WiMAX offers the full mobility of cellular networks at true broadband speeds.
3G vs. 4GLess Complexity, Faster Transmission
Unlike the 3G networks which are a combination of circuit switched and packet switched networks, 4G will be based on packet switching only. This will allow low-latency data transmission.
3G
Leading U.S. Carrier 3G EVDO network currently averages
400 to 700 Kbps with peak rates up to 2
Mbps.
4G
International Carrier is testing 4G
communication at 100 Mbps while moving, and 1 Gbps while
stationary. 0
10
2030
4050
6070
8090
100
Mb
ps
3G 4G
Wi-MAX / Wi-Fi Comparison
Wi-MAX and Wi-Fi are somewhat independent, addressing slightly different needs.
Wi-MAX uses private, licensed spectrum and provides Wi-Fi-like service with guaranteed performance to larger public areas, similar in coverage to cellular networks today.
Wi-Fi uses shared spectrum and operates at short distances, making it ideal for low-cost, private networks (where usage of the network is constrained to an office building or campus) or free public systems (where service guarantees are not required).
Wi-MAX vs. Wi-Fi
Application of 4G
1)In traffic control.
2)Multimedia – video services
3)Telemedicine.
4)Crisis Management
5)Virtual Navigation
Interoperability between the signaling techniques that are planned for use in 4G.
Cost is another factor that could hamper the progress of 4G
technology. The equipment required to implement the next-generation network are still very expensive.
A Key challenge facing development of 4G technologies is how to make the network architectures compatible with each other. This was one of the unmet goals of 3G.
As regards the operating area, rural areas and many buildings in metropolitan areas are not being served well by existing wireless networks.
Limitation of 4G
4G in IndiaIn India, BSNL has launched India's first 4G service 4G WIMAX Broadband Services In Kochi Kerala on 4th June 2011.
Bharti Airtel launched India's first 4G service, using TD-LTE technology, in Kolkata on April 10, 2012.
It must be noted that Airtel's 4G network does not support mainstream 4G phones [73] such as Apple iPhone 5, Samsung Galaxy S III, Nokia Lumia 920 and others.
Thanking you!!!
