Prepared by:

Vinay Kr. Gupta

(0700410088)

The GSM standards is being developed to support mobile services with radio interface data rates even over 400 Kbit/s. This work is being performed under the ETSI.

The major change in the GSM standard into EDGE standard is the 8(Phase Shift Keying)PSK modulation.

EDGE is a global radio based high speed mobile data standard that can be introduced into GSM/GPRS networks.

It is a digital mobile phone technology that allows it to increase data transmission rate and improve data transmission reliability.

Enhanced Data rates for GSM Evolution (EDGE) (also known as Enhanced GPRS (EGPRS), is a digital mobile phone technology that allows improved data transmission rates as a backward-compatible extension of GSM.

EDGE is considered a 3G radio technology and is part of ITU's 3G definition. EDGE was deployed on GSM networks beginning in 2003 — initially by Cingular (now AT&T) in the United States.

EDGE is an official 3G cellular technology that can be deployed within an operator's existing 850, 900, 1800 and 1900 MHz spectrum bands. A powerful enhancement to GSM/GPRS networks, EDGE increases data rates by a factor of three over GPRS and doubles data capacity using the same portion of an operators’ valuable spectrum.

EDGE employs three advanced techniques in the radio link that allow EDGE to achieve extremely high spectral efficiency for narrowband cellular-data25 services

The resulting throughput per time slot with EDGE can vary from 8.8 kbps under adverse conditions to 59.2 kbps with a very good carrier-to-interference (C/I) ratio.

EDGE makes full use of the capacity in the available radio spectrum. In this regard, EDGE is as effective a technique for expanding data capacity as the AMR codec is for expanding voice capacity.

It can be used both packet- switched and circuit-switched voice and data services. High-speed data applications such as video services and other multimedia benefit from EGPRS' increased data capacity.

•Economic forces – less costly than upgrading to UMTS

•Easy to offer global service to subscribers – 82% of world market is GSM which is already equipped for easy roaming and billing

•Higher data rates and system capacity

•Broadband-like speeds achievable

•Much less expensive mobiles

Basically, EDGE only introduces a new modulation technique and new channel coding that can be used to transmit both packet-switched and circuit-switched voice and data services.

EDGE is an add-on to GPRS and cannot work alone. And is therefore much easier to introduce than GPRS. GPRS has a greater impact on the GSM system than EDGE has.

EDGE offers significantly higher throughput and capacity .This decreases the number of radio resources required to support the same traffic, thus freeing up capacity for more data or voice services.

EDGE can transmit three times as many bits as GPRS during the same period of time. This is the main reason for the higher EDGE bit rates. 

Designed for existing spectrum: 800/900/1800/1900MHz

Low risk technology evolution from GSM/GPRS

Easy implementation on a GSM/GPRS network

Cost effectiveIncrease the capacity and triples the data

rate of GPRSEnabling new multimedia services

EDGE transmits both packet-switched and circuit-switched voice and data services.

High speed Data ratesEDGE Evolution continues in Release 7 of the

3GPP standard providing doubled performance e.g.to complement High-Speed Packet Access (HSPA).

Voice over IP is planned for EDGE R’2000 Standards

http://www.mobileipworld.com.“Data capabilities for GSM Evolution to UMTS”,

November19, 2002. http://www.rysavy.comNokia, “A comparison between EDGE and

Alternative Technologies”, June 5,2001. http://www.3Gamericas.org

Enhanced Data Rates for GSM Evolution EDGE; Nokia’s vision for a service platform supporting high-speed data applications. http://www.nokia.com

EDGE; Introduction of high-speed data in GSM/GPRS networks.http://ericsson.com.

IEEE Personal Communications • June 1999 http://gsmworld.com