Bill Huang, general manager of China Mobile Research Institute, said that the company is well prepared to move to LTE, and stressed the importance of supporting voice. Mr. Haung went on to say that one option for Voice over LTE was the UMA/GAN protocol.“We could carry voice over UMA” said Mr. Huang. “We will have an LTE network that supports voice…”. To clarify, what Mr. Huang is referring to is not the traditional ‘home zone’ UMA deployment involving Wi-Fi or femtocells.
The 3GPP UMA/GAN (Generic Access Network) standard provides a generic method for extending 2G and 3G circuit (and packet) services over any broadband access network. Until now, the standard had been used to enable mobile operators to extend their services over fixed broadband networks (DSL, cable,…). However, now with a high-speed, low latency *mobile* broadband network, GAN can be used to extend existing mobile services (like telephony) over LTE.