2.75G (EDGE)


EDGE or Enhanced Data rates for GSM Evolution is a technology evolution of GSM and IS-136. The purpose of this new technology development is to increase data transmission speed, spectrum efficiency, and allows the use of new applications and increase capacity.

The application of EDGE in GSM phase 2 + such as GPRS and HSCSD is done by adding a new physical layer at the side of the Radio Access Network (RAN). So no berubahan on the side of the core network such as MSC, SGSN, or GGSN.

EDGE Capacity For Advanced Technology Data Transfer Rate

In GPRS offers data speeds of 115 kbps, and can theoretically reach 160 kbps. While at EDGE data speeds sbesar 384 kbps, and can theoretically reach 473.6 kbps. EDGE speeds generally three times higher than GPRS. This is possible because the techniques used in EDGE modulation (EDGE uses 8PSK, GPRS uses GMSK) and different methods of fault tolerance with GPRS, and also an improved link adaptation mechanisms. EDGE also uses a different coding scheme with GPRS. In nine kinds EDGE coding scheme, whereas there were only four in the GPRS coding schemes.

Capacity and Capability EDGE Mobile Technology The Third Generation (3G)

As mentioned in the previous points, EDGE has the data transfer, for example, could EDGE technology is three times faster than GPRS technology. That is, if the cellular subscriber wants to download MMS messages using GPRS technology takes tens of seconds, but with EDGE technology, it only takes a few seconds.

Another advantage, if the GPRS technology has the ability to transfer data up to 114 Kbps, EDGE technology capable of supporting data, multimedia services up to 384 Kbps. EDGE is a new designation for GSM 384. This technology is called GSM 384, because it has a data transmission capability up to 384 Kbps.

According to the World Association GSM, EDGE can even reach speeds of up to 473.8 kbps. With EDGE, operators can provide mobile data communications service with higher speeds than GPRS, which is only capable of GPRS data transmission speeds of about 25 Kbps. So also when compared to other platforms, the ability to reach 3-4 times the speed of EDGE access point telephone cable (usually around 30-40 kbps) and almost two times the speed of CDMA 2000 1x, which is only about 70-80 kbps. About the services provided this technology, namely third-generation service applications namely high quality streaming audio, streaming video, online games, high speed downloading.

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