Evo definicija:
HSDPA (High Speed Downlink Packet Access) je nadogradnja paketnog dijela UMTS mreže, koja korisnicima omogućuje mobilni prijenos podataka do 4x brži od UMTS-a u silaznoj vezi, te do 6x brži u uzlaznoj vezi. U praksi to znači mobilni širokopojasni pristup Internetu brzinom do 1,8 Mbit/s u downloadu, te do 384 kbit/s u uploadu.
UMTS (Universal Mobile Telecommunications System) je tehnologija treće generacije mobilnih mreža (3G). Omogućuje mobilni pristup Internetu u Hrvatskoj - brzinom do 384 kbit/s.
EDGE (Enhanced Data rates for Global Evolution) je tehnologija koja pripada trećoj generaciji mobilnih mreža (3G), a omogućuje mobilni prijenos podataka brzinom do 220 kbit/s.
GPRS (General Packet Radio Service) omogućuje prijenos podataka i mobilni pristup Internetu preko vašeg mobilnog telefona brzinom do 80 kbps.
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I na engleskom:
"GPRS (General Packet Radio Service) is a method of enhancing 2G phones to enable them to send and receive data more rapidly. With a GPRS connection, the phone is "always on" and can transfer data immediately, and at higher speeds: typically 32 - 48 kbps. An additional benefit is that data can be transferred at the same time as making a voice call. GPRS is now available on most new phones.
GPRS is part of a series of technologies that are designed to move 2G networks closer to the performance of 3G networks. The key characteristic of a 3G network is its ability to transfer large amounts of data at high speed (up to 2 Mbps), enabling applications like video calling, video downloads, web browsing, email, etc. By increasing the speed of a 2G network, some of these applications become possible, e.g. web browsing and sending or receiving emails with large attachments. These technologies are called 2.5G and include enhancements to the CSD technology, such as HSCSD and EDGE."
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