GPRS / EGPRS difference

Hello, Dancing_M.

This describes the General Packet Radio Service (GPRS), which is a type of end-to-end packet switched service based on the GSM technology. It supports GMSK CS-1 to CS-4. The maximum rate of a single channel is 20 kbit/s.

GPRS enables a subscriber to send and receive data in end-to-end packet transfer mode and has the following features:

l GPRS makes full use of the existing GSM network infrastructure.

l GPRS enables efficient use of radio resources.

l GPRS provides a radio access rate of up to 171.2 kbit/s.

l GPRS supports standard interfaces.

GPRS provides abundant packet services (GBFD-114101 GPRS), for example, mobile Internet access, e-commerce (e-Bank and e-Currency), cluster management, remote control/remote measurement, booking system (hotels, theatres, and airplanes), and group services (stock information publication).

EDGE consists of the Enhanced GPRS (EGPRS) and the Enhanced Circuit Switched Data (ECSD).

l EGPRS is enhanced GPRS (GBFD-114201 EGPRS). In addition to GMSK, EGPRS also uses the 8 Phase Shift Keying (8PSK) modulation scheme to increase the peak rate of a single channel to 59.2 kbit/s.

l ECSD is enhanced high-speed circuit switched data, that is, enhanced HSCSD. To provide a data rate of 57.6 kbit/s, HSCSD requires four timeslots, but ECSD requires only two timeslots.

Huawei BSS supports only EGPRS. Unless otherwise specified, EDGE mentioned in this document indicates EGPRS.

GPRS provides MSs with high-speed packet data services. It prolongs the life expectancy of GSM, enhances the utilization of radio resources. It can smoothly evolve to the 3G network and therefore effectively secure the investment of the operators.

By using new modulation and coding schemes, EDGE increases the data rates by about three times on the Um interface and meets the requirements of high-speed data services.

Thanks.