Phone Scoop

printed December 18, 2014
See this page online at:
http://www.phonescoop.com/glossary/term.php?gid=151

Home  ›  Glossary  ›

EVDO

(1xEV-DO)

1xEV-DO (EVDO) is a 3G standard for CDMA-based networks. As a 3G technology, it focuses on bringing high-speed data to CDMA networks.

See: 3G

EVDO provides data rates over 10 times faster than 1xRTT, the previous data technology for CDMA networks. EVDO is not as fast as the newer LTE 4G standard.

See: 1xRTT

See: LTE

In terms of data speed and general technology evolution, the closest equivalent to EVDO for GSM/WCDMA networks would be HSDPA.

See: HSDPA

Part of a family of CDMA2000 1x digital wireless standards. EVDO originally stood for "EVolution, Data-Only", but later was also referred to as "EVolution, Data-Optimized".

Unlike other proposed "1x" standards, EVDO only addresses data, not voice. It requires a dedicated radio frequency range, separate from voice networks using standards such as 1xRTT.

There are currently two main versions of EVDO: "Release 0" and "Revision A".

Release 0 (r0) is the original version, and the first to be widely deployed. Rel. 0 offers data rates up to 2.4 mbps, averaging 300-600 kbps in the real world. This is much faster than the 50-80 kbps typically offered by the older 1xRTT technology.

Revision A (rA) integrates most of the faster data technology originally designed for the 1xEV-DV Revision D standard, and improves latency. These enhancements allow features such as VoIP and video calling. The downlink (download) theoretical peak data rate compared to Release 0 is improved from 2.4 mbps to 3.1 mbps.

EVDO is based on a technology initially known as "HDR" (High Data Rate) or "HRPD" (High Rate Packet Data), developed by Qualcomm. The international standard is known as IS-856.

Still confused? Spot a mistake? Give us your feedback on this definition.

back to Glossary Index

Subscribe to Phone Scoop News with RSS Follow @phonescoop on Twitter Phone Scoop on Facebook Phone Scoop on Google+ Subscribe to Phone Scoop on YouTube Follow on Instagram

 

All content Copyright 2001-2014 Phone Factor, LLC. All Rights Reserved.
Content on this site may not be copied or republished without formal permission.
1