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Current Trends in Information
System
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Overview
Introduction to 4G
Technicalities Involved
Tools Configuration
Future Prospects of 4G
Application of 4G in Business
Q&A
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INTRODUCTION
4G is the fourth generation of Mobile Telephony
It is a successor of the famous 3G network
The goal of the network is to provide a comprehensive and
secure network connection at much faster speed than theprevious generations
Already started in countries like US & China but still is innascent form in India
BHARTI AIRTEL was the first company to provide theservice in Kolkata
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SPECIAL FEATURES
High quality service and real fast data transfer rate
High Definition Mobile TV
3D Television
High-End graphics
Video Conferencing
Better reception & less dropped data
Speed of upto 100 mbps
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The world is flat, as Thomas Friedman puts it, andtelecommunication technology is one of the forcesflattening the world. The global adoption of4G LTE isa good example of such flattening technology.
http://en.wikipedia.org/wiki/The_World_Is_Flathttp://blog.anuesystems.com/lte-and-mobile-carriers/http://blog.anuesystems.com/lte-and-mobile-carriers/http://en.wikipedia.org/wiki/The_World_Is_Flat7/30/2019 current trends in information system-4g
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Difference Between 3G & 4G
Unlike 3G, which is based on two parallel infrastructuresconsisting ofcircuit switched and packet switched networknodes respectively, 4G will be based on packet
switching only.
Recently, new access schemes like OrthogonalFDMA(OFDMA), Single Carrier FDMA(SC-FDMA), Interleaved FDMAand Multi-carrier CDMA(MC-
CDMA) are gaining more importance for the nextgeneration systems. These are based onefficient FFT algorithms and frequency domainequalization. They also make it possible to control thebandwidth and form the spectrum in a flexible way.
http://en.wikipedia.org/wiki/Circuit_switchedhttp://en.wikipedia.org/wiki/Packet_switchedhttp://en.wikipedia.org/wiki/OFDMAhttp://en.wikipedia.org/wiki/OFDMAhttp://en.wikipedia.org/wiki/SC-FDMAhttp://en.wikipedia.org/w/index.php?title=Interleaved_FDMA&action=edit&redlink=1http://en.wikipedia.org/wiki/Multi-carrier_code_division_multiple_accesshttp://en.wikipedia.org/wiki/FFThttp://en.wikipedia.org/wiki/FFThttp://en.wikipedia.org/wiki/Multi-carrier_code_division_multiple_accesshttp://en.wikipedia.org/wiki/Multi-carrier_code_division_multiple_accesshttp://en.wikipedia.org/wiki/Multi-carrier_code_division_multiple_accesshttp://en.wikipedia.org/w/index.php?title=Interleaved_FDMA&action=edit&redlink=1http://en.wikipedia.org/wiki/SC-FDMAhttp://en.wikipedia.org/wiki/OFDMAhttp://en.wikipedia.org/wiki/OFDMAhttp://en.wikipedia.org/wiki/Packet_switchedhttp://en.wikipedia.org/wiki/Circuit_switched7/30/2019 current trends in information system-4g
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As opposed to earlier generations, 4G systems does notsupport circuit switched telephony. IEEE 802.20, UMB andOFDM standards lack soft-handoversupport, also knownas cooperative relaying. Physical layer transmission
techniques are as follows: MIMO: To attain ultra high spectral efficiency .( multi-
antenna and multi-user MIMO)
Frequency-domain-equalization, for example multi-carriermodulation or single-carrier modulation.
Frequency-domain statistical multiplexing, for Variable bitrate by assigning different sub-channels to different usersbased on the channel conditions
Turbo principle error-correcting codes: To minimize the
required SNR at the reception side
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Channel-dependent scheduling: To use the time-varying channel
Link adaptation: Adaptive modulation and error-correcting codes
Mobile-IP utilized for mobility
IP-based femtocells
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What is LTE??
A standard for wireless communication of high-speeddata for mobile phones and data terminals
Based on the GSM/EDGE and UMTS/HSPA networktechnologies
The standard is developed by the 3GPP
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Goals of LTE Significantly increase peak data rates, scaled linearly
according to spectrum allocation
Improving spectral efficiency
Lowering costs Improving services
Making use of new spectrum opportunities
Improved quality of service Better integration with other open standards
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LTE Network Architecture
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Performance RequirementsData Rate:
Instantaneous downlink peak data rate of 100Mbit/s in a 20MHz downlinkspectrum (i.e. 5 bit/s/Hz)
Instantaneous uplink peak data rate of 50Mbit/s in a 20MHz uplink spectrum (i.e.2.5 bit/s/Hz)
Cell range:
5 km - optimal size
30km sizes with reasonable performance
Upto 100km cell sizes supported with acceptable performance
Cell capacity:
Upto 200 active users per cell(5 MHz) (i.e., 200 active data clients)
Mobility:
Optimized for low mobility(0-15km/h) but supports high speed
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Performance Requirements(contd.)Latency : user plane < 5ms control plane < 50 ms
Improved spectrum efficiencyCost-effective migration from Release 6 Universal Terrestrial RadioAccess (UTRA) radio interface and architectureImproved broadcastingIP-optimized
Scalable bandwidth of 20MHz, 15MHz, 10MHz, 5MHz and
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Key Features Multiple access scheme Downlink: OFDMA Uplink: Single Carrier FDMA (SC-FDMA)
Adaptive modulation and coding DL modulations: QPSK, 16QAM, and 64QAM UL modulations: QPSK and 16QAM Rel-6 Turbo code: Coding rate of 1/3, two 8-state constituent encoders,
and a contention- free internal interleaver.
Bandwidth scalability for efficient operation in differently sized allocatedspectrum bands
Possible support for operating as single frequency network (SFN) tosupport MBMS
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Key Features (contd.) Multiple Antenna (MIMO) technology for enhanced data rate and
performance.
ARQ within RLC sublayer and Hybrid ARQ within MAC sublayer.
Power control and link adaptation
Implicit support for interference coordination
Support for both FDD and TDD
Channel dependent scheduling & link adaptation for enhanced performance.
Reduced radio-access-network nodes to reduce cost, protocol-related
processing time & call set-up time
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Peak Data Rate Downlink (DL) 150 Mbps
Peak Data Rate Uplink (UL) 75 Mbps
Transmission Bandwidth DL 20 MHz
Transmission Bandwidth UL 20 MHz
Mobility Optimized for low speeds (
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Application of 4G in Business
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Peak Times
Better Security
Global Adoption
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Backward Compatibility with 3G
Future availability of more 4G devices and applications
Data Capacity
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