Chapter 5 WAN Setup
3G Comparison Table
See the following table for a comparison between 2G, 2.5G, 2.75G and 3G wireless technologies.
Table 31 2G, 2.5G, 2.75G, 3G and 3.5G Wireless Technologies
NAME | TYPE | MOBILE PHONE AND DATA STANDARDS | DATA | |||
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SPEED | ||||||
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2G | Circuit- | GSM (Global System for Mobile | Interim Standard 95 | |||
| switched | Communications), Personal | first |
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| standard pioneered by Qualcomm. |
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| The brand name for |
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| cdmaOne. |
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2.5G | Packet- | GPRS (General Packet Radio | CDMA2000 is a hybrid 2.5G / 3G |
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| switched | Services), | protocol of mobile |
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| Switched Data (HSCSD), etc. | telecommunications standards that |
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| use CDMA, a multiple access |
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2.75G | Packet- | Enhanced Data rates for GSM |
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scheme for digital radio. |
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| switched | Evolution (EDGE), Enhanced |
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| GPRS (EGPRS), etc. | CDMA2000 1xRTT (1 times Radio |
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| Transmission Technology) is the |
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| core CDMA2000 wireless air |
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| interface standard. It is also known |
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| as 1x, 1xRTT, or |
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| considered to be a 2.5G or 2.75G |
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| technology. |
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3G | Packet- | UMTS (Universal Mobile | CDMA2000 |
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| switched | Telecommunications System), a | Optimized, originally 1x Evolution- |
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| Data Only), also referred to as EV- |
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| standard defined in ITUA | DO, EVDO, or just EV, is an |
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| specification, is sometimes | evolution of CDMA2000 1xRTT and |
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| marketed as 3GSM. The UMTS | enables |
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| uses GSM infrastructures and W- | connectivity. It is also denoted as |
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| CDMA (Wideband Code Division |
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| Multiple Access) as the air |
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| interface. |
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3.5G | Packet- | HSDPA |
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| switched | Packet Access) is a mobile |
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| telephony protocol, used for |
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| allows for higher data transfer |
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| speeds. |
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Fast
A.The International Telecommunication Union (ITU) is an international organization within which governments and the private sector coordinate global telecom networks and services.
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