November 13th afternoon message, the world's first cross-border, cross TD-LTE and LTE commercial FDD network 4G VoLTE HD audio and video phone, on November 13, 2013 afternoon 15 when from Chengdu dial out.

This is an important milepost of global 4G development, it is marked by China leading TD-LTE technology solutions in voice made a breakthrough, therefore, China 4G will enter a new era of high-definition video communication.

China and South Korea through international 4G VoLTE audio and video calls

In the 4G HD audio and video communication field China Mobile and South Korea SK Telecom, vice president of China Mobile Li Zhengmao click 4G mobile phone, the scene immediately came from South Korea to Seoul sound, at both ends of the video call screen through the WiMo wireless with the screen sharing technology, the first time synchronization in the LED display.

At this point, Li Zhengmao and South Korean SK Telecom company vice president Cui Zhensheng, the world's first TD-LTE and LTE FDD commercial network 4G VoLTE HD audio and video calls.

Subsequently, China Mobile Zhejiang company general manager Zheng Jie at the venue in Hangzhou, Seoul by VoLTE and the audio and video calls, general manager of China Mobile company in Sichuan frequently and in the Hangzhou Zhejiang company deputy general manager Liu Yaogen in the interaction.

NetEase technology on the scene to understand, VoLTE is the key to provide high-quality voice service in 4G era, but also provide key rich media service. VoLTE technology to the 4G user is the most direct experience on shorter waiting time, and higher quality, more natural audio and video calls, it completely changed since the invention of the telephone voice encoding 137 years the most traditional.

The 4G VoLTE HD audio and video communication, the latest version of the Samsung 4G commercial terminal, realizes operation communication of China Mobile TD-LTE and Korea SKT LTE FDD commercial network, show a variety of scenarios, the characteristic of VoLTE service performance and high bandwidth, low latency, high quality.

The significance of VoLTE in which

Technical experts from China Mobile to NetEase technology introduction, VoLTE is Voice over LTE abbreviation, is one kind of IP data transmission technology, without the need of 2G/3G net, all services hosted on the 4G network, can realize the unified data and voice service on the same network.

For most people, VoLTE or a strange nouns. Common ground says, VoLTE is in the LTE VoIP under the environment of network business, also is to let the IP voice service, let the voice data channel.

To promote the development of this technology is that, LTE is not a voice channel at the beginning of the design, when users use the LTE 4G network if you need to make a call, the network will need to come down to the 2G/3G network. "But in the long term, the 2G/3G network is ultimately to exit the stage, or the need to constantly put into maintenance." Technology experts said.

It is understood, VoLTE has been identified as the China Mobile TD-LTE voice of the target solution. In June this year, in 2013 GSMA mobile Asia Expo, China Mobile President Li Yue released the VoLTE white paper, want to accelerate the development of TDD VoLTE, pull the 4G industry mature, to reduce the development of VoLTE industry and FDD gap.

In order to promote the global mobile communication industry to accelerate the development of supporting TDD VoLTE, China Mobile launched the Hangzhou, Chengdu, Guangzhou, Nanjing 4 city VoLTE field test in August this year. At the same time, in order to enhance the interoperability of international commercial, Korean operators SK Telecom depth cooperation with China Mobile the world's first VoLTE, by introducing the VoLTE HD codec technology, implementation of end to end IP voice technology.

Technology experts said, VoLTE HD audio and video as one of the highlights of 4G's business, can give users better call experience. The TD-LTE and LTE FDD commercial network 4G VoLTE HD video and Audio Interchange, is the world's first LTE voice solutions, but also a major breakthrough in the TD-LTE network, will lay the foundation for future VoLTE international roaming.