IMT-2000 (International Mobile Telecommunications-2000) is the global standard for third generation (3G) wireless communications as defined by the International Telecommunication Union.[1][2][3]
In 1999 ITU approved five radio interfaces for IMT-2000 as a part of the ITU-R M.1457 Recommendation.[4] The five standards are:[5]
- IMT-2000 CDMA Direct Spread
- IMT-2000 CDMA Multi-Carrier
- IMT-2000 CDMA TDD
- also known as TD-SCDMA
- IMT-2000 TDMA Single Carrier
- IMT-2000 FDMA/TDMA
- also known as DECT
To meet the IMT-2000 standards, a system must provide peak data rates of at 384 Kbit/s for mobile stations and 2 Mbit/s for fixed stations.[2][6][7][8][9]
References
[edit]- ^ "What is IMT-2000" (PDF). ITU. Archived from the original on 12 October 2022. Retrieved 4 March 2022.
{{cite web}}: CS1 maint: bot: original URL status unknown (link) - ^ a b "IMT-2000". Network Encyclopedia. Retrieved 4 March 2022.
- ^ "IMT-2000 Network Architecture" (PDF). Fujitsu. Retrieved 4 March 2022.
- ^ "M.1457 : Detailed specifications of the terrestrial radio interfaces of International Mobile Telecommunications-2000 (IMT-2000)". ITU. Retrieved 4 March 2022.
- ^ "ITU-2000". 3G4G Wireless Resource Centre. Retrieved 4 March 2022.
- ^ "3G Consultation Qualcomm" (PDF). Office of the Communications Authority HK. Retrieved 4 March 2022.
- ^ "3G CELLULAR STANDARDS WITH PATENTS". projectsatbangalore.com. 2014-06-24. Retrieved 2019-08-17.
- ^ "ITU-T Rec. Q.1701 (03/99) Framework for IMT-2000 networks" (PDF). International Telecommunication Union. 15 March 1999. Retrieved 2022-03-23.
...At least 384 kbit/s in outdoor to indoor and pedestrian radio environments, BER ≤ 10−6, both for circuit and packet services...At least 2048 kbit/s in indoor office radio environment, BER ≤ 10−6, both for circuit and packet services...
- ^ Segan, Sascha (2015-02-10). "3G vs. 4G: What's the Difference?". PCMAG. Retrieved 2019-08-17.
With minimum consistent Internet speeds of 144 Kbps, 3G was supposed to bring 'mobile broadband.'
External links
[edit]- ITU-R Recommendation M.1457: Detailed specifications of the terrestrial radio interfaces of International Mobile Telecommunications-2000 (IMT-2000).
- ITU IMT-2000 Network Aspects
Cellular network standards | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 0G radio telephones (1946) | |||||||||
| 1G (1979) |
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| 2G (1991) |
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| 2G transitional (2.5G, 2.75G, 2.9G) |
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| 3G (1998) IMT-2000 (2001) |
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| 3G transitional (3.5G, 3.75G, 3.9G) |
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| 4G (2009) IMT Advanced (2013) |
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| 5G (2018) IMT-2020 (2021) |
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| Related articles | |||||||||
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