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

^ "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

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

List of mobile phone generations

0G radio telephones (1946)

MTS
IMTS
Altai
OLT
MTA - MTB - MTC - MTD
Mobile TeleSeratout
AMTS
Autotel (PALM)
ARP
B-Netz
AMR

1G (1979)

AMPS family	AMPS - N-AMPS TACS - ETACS
Other	NMT C-450 Hicap Mobitex DataTAC CT1

2G (1991)

GSM/3GPP family	GSM CSD - HSCSD
3GPP2 family	cdmaOne (IS-95)
AMPS family	D-AMPS (IS-54 and IS-136)
Other	CDPD iDEN PDC PHS CT2

2G transitional
(2.5G, 2.75G, 2.9G)

GSM/3GPP family	GPRS EDGE/EGPRS - Evolved EDGE
3GPP2 family	CDMA2000 1X (TIA/EIA/IS-2000) CDMA2000 1X Advanced
Other	WiDEN DECT

3G (1998)
IMT-2000 (2001)

3GPP family	UMTS UTRA-FDD / W-CDMA FOMA UTRA-TDD LCR / TD-SCDMA UTRA-TDD HCR / TD-CDMA
3GPP2 family	CDMA2000 1xEV-DO Release 0 (TIA/IS-856)

3G transitional
(3.5G, 3.75G, 3.9G)

3GPP family	HSPA HSDPA HSUPA HSPA+ DC-HSDPA LTE (E-UTRA)
3GPP2 family	CDMA2000 1xEV-DO Revision A (TIA/EIA/IS-856-A) EV-DO Revision B (TIA/EIA/IS-856-B) EV-DO Revision C
IEEE family	Mobile WiMAX IEEE 802.16e Flash-OFDM iBurst (IEEE 802.20) WiBro
ETSI family	HiperMAN