IMT-2000

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
  • also known as W-CDMA, used in UMTS, the successor to GSM
• IMT-2000 CDMA Multi-Carrier
  • also known as CDMA2000, the successor to 2G CDMA (IS-95)
• IMT-2000 CDMA TDD
  • also known as TD-SCDMA
• IMT-2000 TDMA Single Carrier
  • also known as EDGE, an intermediate 2.5G technology
• 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

1. "What is IMT-2000" (PDF). ITU. Archived from the original on 12 October 2022. Retrieved 4 March 2022.
2. "IMT-2000". Network Encyclopedia. Retrieved 4 March 2022.
3. "IMT-2000 Network Architecture" (PDF). Fujitsu. Retrieved 4 March 2022.
4. "M.1457 : Detailed specifications of the terrestrial radio interfaces of International Mobile Telecommunications-2000 (IMT-2000)". ITU. Retrieved 4 March 2022.
5. "ITU-2000". 3G4G Wireless Resource Centre. Retrieved 4 March 2022.
6. "3G Consultation Qualcomm" (PDF). Office of the Communications Authority HK. Retrieved 4 March 2022.
7. "3G CELLULAR STANDARDS WITH PATENTS". projectsatbangalore.com. 2014-06-24. Retrieved 2019-08-17.
8. "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...
9. 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

• ITU-R Recommendation M.1457: Detailed specifications of the terrestrial radio interfaces of International Mobile Telecommunications-2000 (IMT-2000).
• ITU IMT-2000 Network Aspects