What is the difference between GPRS, HSPA and HSDPA?

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In wireless communication we use the above services to access the internet. What are the differences between the above technologies. I know that there are differences in speeds but I expect some statistical information or technology definition like thing. I mean a good comparison :)

Update :

I am adding the thing I realized..

HSPA is a common term that used to group 2 technologies. HSDPA and HSUPA. They are operated in UMTS networks.

GPRS works in GSM networks

Chathuranga Chandrasekara

Posted 2009-08-10T03:37:01.053

Reputation: 629

Don't forget EDGE and UMTS. – tsilb – 2009-08-10T04:42:06.123

Answers

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GPRS or Generalized Packet Radio Service is generally associated with 2G networks and provides data rates of 56-114 kbit/s.

HSPA or High Speed Packet Access describes a family of related cellular data protocols.

HSDPA or High-Speed Downlink Packet Access is a particular HSPA protocol and currently provides for speeds of 1.8, 3.6, 7.2 and 14.0 Mbit/s.

Jeff Leonard

Posted 2009-08-10T03:37:01.053

Reputation: 1 061

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nik

Posted 2009-08-10T03:37:01.053

Reputation: 50 788

1Maybe you could summarize the contents of those websites. – Ikke – 2009-08-10T07:56:56.900

Yes, please summarize. – Peter Mortensen – 2009-08-10T09:08:05.180