Qualcomm Makes Voice Call Over LTE for the First Time

February 6, 2012, By Sanjeev Ramachandran

Well, we are now witness to a milestone in our journey to more advanced communication networks. Qualcomm has successfully tried handling a voice call over an LTE mobile network for the first time ever.

Long Term Evolution Networks, pet named LTE networks, are now in popular use, but they are not yet actually used for handling voice calls. Though major network providers like Verizon and AT&T have already rolled out their LTE networks, they are still making use of 3G networks to carry out the voice calls between the users.

On an LTE network, a technology called Voice over LTE is being used for handling voice calls. Qualcomm’s present achievement is notable since it takes the world of communications close to making VoLTE technology a reality, as far as day to day use of LTE networks are concerned.

The company claims to have tasted success in making out a voice call using a test hardware powered by Snapdragon S4 MSM8960 3G/LTE multimode processor on December 23, last year.

They crossed the milestone while working with Ericcson. Qualcomm claims that they were able to hand over the voice call from an LTE network to a WCDMA network.

The operation was made with the help of Single Radio Voice Call Continuity technology otherwise known as SRVCC. SRVCC is very crucial in bringing voice handling on LTE networks possible, by providing continuity of service. It continuously switches to a WCDMA network, when the user making a call on VoLTE leaves the LTE coverage.

The company is planning to demonstrate the achievement to the public, during the imminent Mobile World Congress at Barcelona in the end of this month.

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