EDGE TECHNOLOGY

PRESENTED BY:PRERNA PARMAR10807574RB6801B35PRERNA

1EDGE TECHNOLOGY

1KASHISHEDGE

INTRODUCTION

2EDGE stands for Enhanced Data rates for GSM Evolution. It is most talked technology in mobile communication technologies in recent times and it turn out to be the evolution of most widely used GSM technology. It facilitates better data transmission rates with improved spectrum efficiency and the best part is its capability of supporting new applications and improved mobile communication capabilities.

INTRODUCTION(contd)

3EDGE as Extended GPRS: It is a high-speed mobile data standard, intended to enable second-generation global system for mobile communication (GSM) and time division multiple access (TDMA) networks to transmit data at up to 384 kilobits per second (Kbps). Also called as GSM384.EDGE: Enhanced Technology:The deployment of EDGE technology is much easier for mobile companies. It does not require any up gradation in hardware, software or any changes in GSM network.

History of mobile phonesEDGE41st generation mobile communication: In 1982 the FCC approved AT&T's 1971 proposal for Advanced Mobile Phone System and allocated frequencies in the 824894MHz band2nd generation mobile communication: 2G emerged in 1990s. These used digital signals. New services like SMS became prevalent.2.5th and 3rd generation mobile communication: launched in USA in 2002. In mid 2000s enhanced 3G was launched which implemented HSDPA. And during development of 3G, 2.5G & GPRS system were developed.

History of mobile phones(contd)EDGE5

GSM and GPRSEDGE61. Difference between GSM and GPRS:GPRS is technology in mobile telecom that is to be applied to the current GSM network. Both uses TDMA, but GSM uses one out of seven slots whereas GPRS connection uses as many as 4+1 time slots.GPRS service providers charge per sent byte, not per second. So we dont have to pay for idle time.

GSM and GPRS (contd)EDGE7GSM:GSM stands for Global System for Mobile Communications.It handles both voice and data traffic requirements of the mobile communication by providing two modes of operation:a)Circuit switched (high-speed circuit switched data) b) Packet switched(GPRS)The standard data rate of a GSM channel is 22.8 kbps.. One of the key features of GSM is the Subscriber Identity Module, commonly known as a SIM card.

GSM and GPRS (contd)EDGE83. GPRS:The general packet radio system (GPRS) provides packet radio access for mobile Global System for Mobile Communications (GSM) and time-division multiple access (TDMA) users.GPRS is the first step toward an end-to-end wireless infrastructure . GPRS usage charging is based on volume of data, either as part of a bundle or on a pay as you use basis.

EDGE technology

EDGE9 EDGE is most talked technology in mobile communication technologies in recent times and it turn out to be the evolution of most widely used GSM technology. It has following features:8 PSK modulation:EDGE provides speed enhancements by changing the type of modulation used and making a better use of the carrier currently used.8 PSK modulation automatically adapts to local radio conditions, offering the fastest transfer rates near to the base stations.It offers up to 48Kbps per channel, compared to 14Kbps per channel with GPRS and 9.6Kbps per channel for GSM.

EDGE technology(contd)EDGE10By also allowing the simultaneous use of multiple channels, the technology allows rates of up to 384Kbps, using all eight GSM channels.The additional implementation of EDGE systems requires just one EDGE transceiver unit to be added to each cell, with the base stations receiving remote software upgrades.EDGE can co-exist with the existing GSM traffic, switching to EDGE mode automatically.

EDGE technology(contd)EDGE112. MODULATION AND CODING SCHEME:GPRS acquires four coding schemes while EDGE posses nine Modulation and Coding Schemes.Each one is designated a number in the region 1 to 9. These allow different degrees of error protection (and coding rate) and this results in a change in the net data throughput. The different coding schemes are grouped into three classes or which are referred, as classes A, consisting of MCS-3, MCS-6, MCS-8, and MCS-9, Family B consists of MCS-2, MCS-5, and MCS-7, Finally family C consists of MCS-1, and MCS- 4. The advantage of grouping the families together in this way is that if a block transmitted in one of the coding schemes is not acknowledged, then it can be sent as two blocks

EDGE technology(contd)EDGE12

EDGE technology(contd)EDGE133. CHANNEL CODING AND FRAME STRUCTURE:EDGE even being a highly sophisticated radio technology, uses the same radio channels and timeslots as any GSM and GPRS system, so it does not require additional spectral resources except to accommodate loading. By deploying EDGE, operators can use their existing spectrum more efficiently. Most new GSM networks deployed today include EDGE. For many GSM/GPRS networks in areas such as the Americas, EDGE was mostly software upgrade to the Base Transceiving Station (BTS)

EDGE technology(contd)EDGE14EDGE as a complementary 3G technology:EDGE provides a high-capability data service in advance of UMTS.EDGE provides average data capabilities for the sweet spot of approximately 100 kbps.It has proven itself in the field as a cost-effective solution and is now a mature technology.EDGE is very efficient spectrally, allowing operators to support more voice and data users with existing spectrum.Operators can maintain their EDGE networks as a complementary service offering, even as they deploy UMTS.

EDGE ARCHITECTUREKASHISH SEHGAL15

Improving the GSM EDGE technologyEDGE16By replacing the 8PSK modulation with a combined2FSK/8PSK modulation scheme, the improved EDGE system can transmit 4 bits/symbol compared to 3 bits/symbol of 8PSK in the same bandwidth as the original EDGE system with similar performance.For obtaining a minimum-phase overall impulse response we use a MMSE-DFE feed forward filter. Hence no filtering is required.

EDGE DEPLOYMENT AND MIGRATIONEDGE17GSM operators first enhanced their networks to support data capability through the addition of GPRS infrastructure.Lately, operators have been upgrading their networks to EDGE, with extremely good results. Operators are now deploying UMTS worldwide. Most UMTS cell sites can be collocated in GSM cell sites enabled by multi-radio cabinets that can accommodate GSM/EDGE as well as UMTS equipment. Much of the GSM/GPRS core network can be used.

EDGE DEPLOYMENT AND MIGRATION(contd...)KASHISH SEHGAL18

EDGE EVOLUTION TECHNOLOGYEDGE19There is improved EDGE technology also available and that is EDGE Evolution. By lowering transmission time interval by 50% that is from 20 ms to 10 ms it manages to reduce latency rates.With the help of dual carriers and reduced latency rate down to 800 ms, higher bit rates are achieved which is up to 1Mbits. Dual antennas are used to improve signal quality and bit rate spectrum efficiency.It will take some time, since software update is required.It does not require any hardware updates.It can provide mobile internet users a speed of about 500Kbits.

ADVANTAGES OF EDGE:EDGE20It has adaptability to the existing system like GPRS, HSCSD (high speed circuit switched data) and specifications; it does not require new systems to be developed for deploying it.EDGE/EGPRS can be operated on existing frequency spectrum that is 800MHz, 1800 MHz and 1900 MHz.It is cost effective since it requires small units of improvement and enhancements on existing network. It provides thrice as better speed as GPRS does.

ADVANTAGES OF EDGE(contd)EDGE21It Improve performance of existing applications and room for new applications like video calls on mobile etc.Faster data transfer rates up to384 kbps EDGE TECHNOLOGY =TODAY TECHNOLOGY, Higher data throughput .Supports various download files types.Rapid internet and WAP connectivity.Service available for EDGE phone without tariff.

DISADVANTAGESEDGE22Extra mobile terminal hardware and software is required.EDGE requires base station modifications.It is frequently referred as 2.75G.

CONCLUSIONEDGE23EDGE can be viewed as an evolution of the GSM network carrying both circuit switched and packet data.EDGE forms basis for the 3G UMTS network (Universal Mobile Telecommunications System)So network operators could evolve their networks GSM, to GPRS then EDGE and finally to the full 3G networks without having to replace and install more new equipment.

REFERENCESEDGE24http://en.wikipedia.org/wiki/Enhanced_Data_Rates_for_GSM_Evolution.http://www.wifinotes.com/mobile-communication-technologies/edge-technology.html. http://www.gsmworld.com/technology/index.shtm.http://www.radio-electronics.com/info/cellulartelecomms/gsm-edge/network-architecture.php.http://www.eogogics.com/courses/EDGE.

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