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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

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Don't forget EDGE and UMTS. – tsilb Aug 10 '09 at 4:42
up vote 5 down vote accepted

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.

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Wikipedia page for HSPA mobile telephony protocols
A Short comparative-description page reference.
AT&T reference page.

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Maybe you could summarize the contents of those websites. – Ikke Aug 10 '09 at 7:56
Yes, please summarize. – Peter Mortensen Aug 10 '09 at 9:08

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