current trends in information system-4g

7/30/2019 current trends in information system-4g

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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_Flat


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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_switched


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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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current trends in information system-4g