On June 27th, China Mobile released the first white paper on voice technology in the 4G era, saying that the upcoming VoLTE technology can switch voice calls on TD-LTE to 2G / 3G networks, and the sound quality of calls is better than OTT services. It is even clearer than 2G calls, which means that the previously worried TD-LTE voice call technology will be resolved.
Three conditions for the development of mobile Internet
China Mobile President Li Yue gave a keynote speech at the 2013 GTI Asia Conference
In his speech to publish a white paper, President Li Yue of China Mobile stated that the most popular term recently is the era of mobile Internet. There are three main conditions for mobile Internet to develop.
First, there must be a broadband mobile network, that is, 3G, 4G mobile network.
The second is the smart terminal. To date, there have been more than 800 million wireless broadband users worldwide and more than 1.2 billion smart terminal users. China Mobile has 200 million smart terminals, accounting for one-sixth of the world.
The third is cloud computing. There are already 1.5 million units on cloud computing platforms worldwide.
Develop 4G voice technology on IP technology
TD-LTE is one of the 4G standards, and the speed of its Internet access is undoubted, but there has been controversy about the technology used for its voice calls. Now, the technical dispute is clear.
According to the "VoLTE White Paper" released by China Mobile, China Mobile will adopt the VoLTE service as the target solution for the TD-LTE voice service.
VoLTE is an IP data transmission technology that does not require a 2G / 3G network, and all services are carried on a 4G network, which can unify data and voice services under the same network. At the same time, when the mobile phone leaves the coverage area of ​​4G, VoLTE can switch the voice call on 4G to the 2G / 3G network to ensure the continuity of the voice call.
Li Yue, President of China Mobile, said, "VoLTE can provide high-quality voice and achieve richer and more natural HD voice calls, because it introduces high-definition voice and video codecs, which improves the quality of voice calls by 2 times. The sound effect is as clear as an FM radio. VoLTE can have a better user experience than 2G / 3G voice and the popular OTT voice service nowadays. "
VoLTE fully commercialized the following year
Regarding the role of VoLTE in the 4G era, Li Yue said, "We hope that VoLTE will become the mainstream of global LTE voice solutions. We hope that VoLTE can have good international roaming. Of course, we hope that VoLTE can solve the integration of TDD and FDD and share experience. .
He revealed that the goal of China Mobile's VoLTE development is: In 2014, the entire network will be commercially deployed with VoLTE. Large-scale business experiments will be conducted in the third and fourth quarters of this year. Large-scale field experiments and trials will be conducted in the first half of next year. In the quarter, the entire network of VoLTE will be launched to the public.
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