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Cellular network standards and generation timeline. This is a comparison of standards of wireless networking technologies for devices such as mobile phones.A new generation of cellular standards has appeared approximately every tenth year since 1G systems were introduced in 1979 and the early to mid-1980s.
The result was the October 17, 2000, launch of the 3Com Audrey, a trapezoidal QNX-based tablet that had an 8 in (20 cm) touchscreen controlled with a stylus and was available in five kitchen colors. [65] As well as with a bundled wireless keyboard, the user could write or draw with the stylus and send the handwritten messages by email. [66]
CDMA2000 1X (IS-2000), also known as 1x and 1xRTT, is the core CDMA2000 wireless air interface standard.The designation "1x", meaning 1 times radio transmission technology, indicates the same radio frequency (RF) bandwidth as IS-95: a duplex pair of 1.25 MHz radio channels. 1xRTT almost doubles the capacity of IS-95 by adding 64 more traffic channels to the forward link, orthogonal to (in ...
Leap Wireless United States: CDMA2000 1xRTT, EV-DO Rev. A 1900 Dec 2001: Sep 2015 [170] [171] Operator acquired by AT&T. MetroPCS United States: CDMA2000 1xRTT, EV-DO Rev. A 1900 Feb 2002: Jun 2015 [172] [173] Operator acquired by T-Mobile. Sprint (incl. Open Mobile) United States Puerto Rico U.S. Virgin Islands: CDMA2000 1xRTT, EV-DO Rev. A ...
This wireless joint venture received regulatory approval in six months, and began operations as Verizon Wireless on April 4, 2000. On June 30, 2000, the addition of GTE Wireless' assets, in connection with the merger of Bell Atlantic and GTE to form Verizon Communications , made Verizon Wireless the nation's largest wireless communications ...
2000 [35] [27] Telstra (formerly Telecom Australia) – operated an AMPS network in Australia from February 1987 until the end of 2000. As part of the introduction of mobile phone competition in Australia, the Australian government mandated GSM as the new standard for mobile networks, and required that Telstra close the AMPS network by 2000.
IMT-2000 (International Mobile Telecommunications-2000) is the global standard for third generation 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 ]
cdmaOne network structure. The IS-95 standards describe an air interface, [1] a set of protocols used between mobile units and the network. IS-95 is widely described as a three-layer stack, where L1 corresponds to the physical layer, L2 refers to the Media Access Control (MAC) and Link-Access Control (LAC) sublayers, and L3 to the call-processing state machine.