Engineering:IMT-2000

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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". https://web.archive.org/web/20221012191754/https://www.itu.int/osg/imt-project/docs/What_is_IMT2000-2.pdf. 
  2. ↑ 2.0 2.1 "IMT-2000". https://networkencyclopedia.com/imt-2000/. 
  3. ↑ "IMT-2000 Network Architecture". https://www.fujitsu.com/downloads/MAG/vol38-2/paper03.pdf. 
  4. ↑ "M.1457 : Detailed specifications of the terrestrial radio interfaces of International Mobile Telecommunications-2000 (IMT-2000)". https://www.itu.int/rec/R-REC-M.1457. 
  5. ↑ "ITU-2000". https://www.3g4g.co.uk/Faq/imt2000.html. 
  6. ↑ "3G Consultation Qualcomm". https://www.ofca.gov.hk/filemanager/ofca/en/content_1349/3G-consultation-Qualcomm.pdf. 
  7. ↑ "3G CELLULAR STANDARDS WITH PATENTS" (in en). 2014-06-24. http://www.projectsatbangalore.com/3G-network/. 
  8. ↑ "ITU-T Rec. Q.1701 (03/99) Framework for IMT-2000 networks" (PDF). 15 March 1999. https://www.itu.int/rec/dologin_pub.asp?lang=e&id=T-REC-Q.1701-199903-I!!PDF-E. "...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?" (in en). https://www.pcmag.com/news/293905/3g-vs-4g-whats-the-difference. "With minimum consistent Internet speeds of 144Kbps, 3G was supposed to bring 'mobile broadband.'" 

External links




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