Markdown

1xRTT

1xRTT is the Acronym for One Times Radio Transmission Technology

A 3G mobile technology standard for transmitting voice, data, and signaling data between mobile phones and cell sites. It is part of the CDMA2000 family of standards, developed by 3GPP2 as a backward-compatible successor to the second-generation cdmaOne (IS-95) standards. 1xRTT is primarily used in North America and South Korea.

CDMA2000 Family

  • Voice: 1xRTT is the voice component of the CDMA2000 family, providing basic voice and low-speed data services.
  • Data: The data component is handled by CDMA2000 1xEV-DO (Evolution-Data Optimized), which comes in several releases (Release 0, Revision A, Revision B) offering increasing data speeds.

Comparison with UMTS

  • Competing Standard: CDMA2000 compares to UMTS, a competing set of 3G standards developed by 3GPP and used in Europe, Japan, China, and Singapore.
  • Approval: Both CDMA2000 and UMTS are approved radio interfaces for the ITU's IMT-2000.

Evolution

  • Successive Stages: The CDMA2000 family represents the evolutionary stages of the underlying technology, with 1xRTT being the initial voice-focused stage.
  • Ultra Mobile Broadband (UMB): The next stage after 1xEV-DO, designed to provide even higher data speeds and improved mobile broadband services.