Ericsson has demonstrated voice with HD quality and video calling over TD-LTE (VoLTE) using commercial LTE smartphones in Shanghai, China. This is the first time a commercial 4G phone has been used to showcase HD voice over TD-LTE.
As part of the demonstration, Sony’s 4G phone Xperia SP M35t was used, which supports TDD/FDD LTE, TD-SCDMA, HSPA and GSM over 13 bands. Xperia SP M35t has been publicly announced and will be commercially launched when 4G licenses are released in China.
Jan Signell, President of Ericsson North East Asia, said: “With today’s demonstration, we have brought VoLTE yet another step closer to full commercialization, contributing to the true globalization of the TD-LTE ecosystem. We are especially pleased to be achieving this breakthrough, together with Sony, when China is about to launch the world’s largest TD-LTE network.”
A connection to the Core & IMS nodes located in Ericsson’s VoLTE Competence Center in Anyang, South Korea was used for the HD voice and video calling over LTE demonstrations, using Ericsson’s end-to-end core and radio network infrastructure.
This February, Ericsson successfully supported China Mobile in demonstrating the world’s first dual-mode HD VoLTE call between TD-LTE and LTE FDD at the Mobile World Congress in Barcelona.