GPRS and EDGE are 2.5G mobile technologies that were developed between 2G and 3G networks. GPRS allows packet-switched data transmission over existing 2G infrastructure using GPRS Support Nodes, including SGSN which routes packets and GGSN which provides a gateway to external networks. EDGE provides increased data rates over GPRS through modulation improvements, acting as a stepping stone to 3G networks. Both GPRS and EDGE enabled more advanced data services than previous 2G technologies.

1. GPRS vs EDGE

2. 2.5G Technology
• Between the second (2G) and third (3G) generation of mobile telephony
• 2G Cellular technology combined with GPRS
• General Packet Radio Service • General -> not restricted to GSM use (DECT
?, 3rd generation systems ?)
• Packet Radio -> enables packet mode communication over air
• Service, not System -> existing BSS (partially also NSS) infrastructure
is used

4. • Uses gsm architecture+ gsn (gprs support nodes)
Sgsn (servicing gsn)
Ggsn ( gateway gsn)
• Uses packet switching
• Faster than gsm and cdma
• Enable simultaneous transmission of packets

5. GPRS support nodes
• There are two network nodes use to offer packet data service called GPRS support
nodes
• 1) Serving GPRS Support Node (SGSN) Route the packets
• 2) Gateway GPRS Support Node (GGSN) Provide gateway between GPRS
& PDN

6. EDGE
• Increased Data Use
As discussed last lecture the introduction of increased
data rates technology will take place over time
Each of these introductions will then allow development
towards 3G
• Each of these technologies will be built upon to allow
3G
Last slides we introduced GPRS
This time we are looking at EDGE Both are referred
to as 2.5G technology

7. References
• http://www.tutorialspoint.com/gprs/gprs_architectur e.html
• Mobile Communications by Jochen Schiller
• https://www.slideshare.net/ArpitaSanghani/gprs-architecture-ppt
• https://www.slideshare.net/Garry54/edgeppt
• https://www.google.co.in/search?biw=1517&bih=735&tbm=isch&sa=1&ei=SJB6
WrOGF8nMvgTl3orIDA&q=3g+technology&oq=3g
• https://www.lifewire.com/general-packet-radio-service-817466