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LarryM99
I suppose that this is interesting, but I'm looking forward to full VoIP calls ...
Robotics Developer
I wonder if it will allow for the reverse cross over ...
Qualcomm, Ericsson demo LTE-to-3G handover
Peter Clarke
2/2/2012 7:23 AM EST
LONDON – Mobile communications company Qualcomm Inc. has announced that, working with Ericsson AB, it has completed a voice call handover from an LTE mobile network to a WCDMA network using Single Radio Voice Call Continuity (SRVCC) technology.
SRVCC is a 3GPP specified feature that enables continuity of service by seamlessly switching to a WCDMA network when a consumer on voice-over-LTE call leaves the LTE network's coverage area.
The successful LTE-to-WCMDA transfer occurred on Dec. 23, 2011 using a handset based on Qualcomm's Snapdragon S4 MSM8960 application processor that is 3G/LTE multimode capable. Qualcomm plans to repeat the demonstration at the Mobile World Congress in Barcelona, Spain, which takes place Feb. 27 to March 1, 2012.
SRVCC follows on from the launch of circuit-switched fallback (CSFB) technology on smartphones in 2011.
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DINapp
2/2/2012 11:01 AM EST
"SRVCC follows on from the launch of circuit-switched fallback (CSFB) technology on smartphones in 2011."
Sure does, although the key thing here is that in order to do a voice call handover, you first need voice over LTE. In this case, it's IMS VoIP (a.k.a. VoLTE) call that is running in the LTE side.
With SR-VCC, this IMS VoIP call is handed over - and simultaneously converted "on-the-fly" to a circuit-switched call" to 3G.
Pretty interesting, huh?
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goafrit
2/2/2012 1:12 PM EST
This is another blockbuster disruption from Qualcomm. Who is driving this amazing engineering renaissance in this company. Very impressive.
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Robotics Developer
2/3/2012 12:54 PM EST
I wonder if it will allow for the reverse cross over (LTE-to-WCMDA-to-LTE-to-WCMDA)? Really neat continuity of service feature. Now if only I can get any decent wireless signal at the house that would be really good news! :)
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LarryM99
2/7/2012 3:56 PM EST
I suppose that this is interesting, but I'm looking forward to full VoIP calls doing handovers on IP backbones using open mobility protocols. Circuit-switched calls in general are on their way out.
Larry M.
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