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SVDO allow simultaneous 1x voice and EVDO data

 
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3Gstore
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Joined: 19 Sep 2006
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PostPosted: Tue Aug 18, 2009 9:12 am    Post subject: SVDO allow simultaneous 1x voice and EVDO data Reply with quote

Quote:
CDMA DEVELOPMENT GROUP ANNOUNCES THE COMPLETION OF CDMA2000 1X ADVANCED SPECIFICATIONS

Enhancements quadruple the voice capacity of existing CDMA2000 1X networks

COSTA MESA, CA — August 17, 2009 — The CDMA Development Group (CDG) today announced that the specifications for CDMA2000® 1X Advanced have been completed and published by the 3rd Generation Partnership Project 2 (3GPP2). 1X Advanced allows 3G CDMA operators to significantly increase the voice capacity of their CDMA2000 1X network by taking advantage of several interference cancellation and radio link enhancements. Among these improvements are base transceiver station (BTS) interference cancellation, improved power control, early frame termination, and smart blanking. 1X Advanced enhancements can be integrated all at once or in phases, offering operators an evolutionary approach to expanding existing networks based on their individual market needs. The complete set of 1X Advanced enhancements can theoretically quadruple the voice capacity of CDMA2000 1X systems in the same 1.25 MHz of spectrum.

“Both large and small CDMA2000 operators will benefit greatly from the voice capacity gains enabled by 1X Advanced,” said Perry LaForge, executive director of the CDG. “In addition to lowering the average cost per call for more affordable voice services, 1X Advanced also frees up channels to deliver 1xEV-DO broadband data services. as Additionally, as operators consider augmenting their 3G CDMA networks with LTE and Mobile WiMAX, 1X Advanced will enable them to get more out of their existing circuit-switched voice networks for as long as needed.”

1X Advanced builds on the CDMA2000 1X technology platform, which has been providing superior voice quality and capacity for more than ten years. Operators can now transition to 1X Advanced gradually and economically, while sustaining backward compatibility. The spectral efficiency of the 3GPP2 standard has been recently enhanced with advanced voice codecs like Enhanced Variable Rate Codec-B (EVRC-B) and the use of quasi-linear interference cancellation (QLIC) techniques, which are already providing up to 50 percent higher voice capacity in today’s networks. The next step would be to move to 1X Advanced, which is a simple channel card upgrade (expected to be commercial in the second half of 2010) with new devices supporting mobile receive diversity, enabling them to more than double voice capacity immediately after the channel upgrade.

A complementary device enhancement known as simultaneous 1X Voice and EV-DO Data (SVDO) will also become available during the same timeframe and will enable CDMA2000 devices to access EV-DO packet data services while in an active 1X circuit-switch voice call. For example, users will be able to send emails or access the Web while on voice calls; phones with GPS can update maps or download real-time traffic information while on voice calls, etc. This device enhancement, which enables these concurrent voice and data services, is independent of the air link standard and infrastructure.
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Jim_in_VA
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PostPosted: Tue Aug 18, 2009 10:36 am    Post subject: Reply with quote

... very interesting developement
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nickjacket
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Joined: 28 Apr 2008
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Location: Tucson, AZ

PostPosted: Tue Aug 18, 2009 2:57 pm    Post subject: Reply with quote

Does 1X Advanced improve service quality for us consumers or is the potential of improvement divided by its capability to provide additional channels at the expense of quality?
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3Gstore
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PostPosted: Tue Aug 18, 2009 3:10 pm    Post subject: Reply with quote

nickjacket wrote:
Does 1X Advanced improve service quality for us consumers or is the potential of improvement divided by its capability to provide additional channels at the expense of quality?

too early to tell what the benefit *will* be to consumers.
the decision to implement remains with the carriers.
i can't trust carriers to do anything, until they've done it already Wink
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Michael
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Joined: 13 Jan 2005
Posts: 6207
Location: Cary, IL

PostPosted: Wed Jan 12, 2011 8:25 am    Post subject: Reply with quote

Verizon Wireless & Apple announced the CDMA iPhone4 yesterday and unfortunately, it does NOT support SVDO.

More info at:

Verizon iPhone4 Doesn't Support SVDO
Verizon iPhone4 Battery, Simultaneous Voice/Data Not Supported
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Duffman
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Joined: 11 Sep 2010
Posts: 72

PostPosted: Wed Jan 12, 2011 5:33 pm    Post subject: Reply with quote

Guys, this "news" is almost 18 months old. With Wimax and LTE, I don't think either CDMA carrier is pursuing this "upgrade", especially if it requires anything more than a simple software update.
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nickjacket
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Joined: 28 Apr 2008
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Location: Tucson, AZ

PostPosted: Wed Jan 12, 2011 11:21 pm    Post subject: Reply with quote

I think that the improvement is about quadrupling voice capacity of an operators radio link.
This seems to mean that an operator can increase revenue of their own customer base and provide roaming capabilities to other carriers (read:revenue generator).
With 4X capacity, an operator can also sell their companies future to venture capitalists that in-turn can divide spectrum costs by 4.

I just let go of my Leap Wireless Cricket CDMA plan over poor codec quality among other reasons.
Voice codec quality is a selling point - "you can hear a pin drop". Whether codec improvements are constant at full capacity is not discussed.
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brian12345
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Joined: 19 Oct 2011
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Location: Newyork

PostPosted: Thu Oct 20, 2011 3:31 am    Post subject: Re:SVDO allow simultaneous 1x voice and EVDO data Reply with quote

The EVDO provides facilities for accessing the data from anywhere with different options.The speed is 3.2mbs and network strength is very good.Different telecom operators provides unlimited data access at the very low price.
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