Research On TD-LTE Voice Solutions

With the rapid progress of mobile communication technology, the future of mobile communication systems to gradually move towards the direction of broadband mobile communications, and in the current mobile communication systems, the basic direction of development is LTE, LTE has been the main mobile device manufacturers..LTE in the initial development of the time, if the use of LTE to connect the circuit domain service signal can not send and receive. Developers not only designed the VoLTE and dual-standby terminal program, but also the CSFB technology, which makes LTE terminal access to the voice service to receive paging and voice services, and can also be a reasonable disposal PS business.2G/3G network has been gradually mature after years of construction, but in order to protect the pre-G network and TD network CS investment, the combination of EPS deployment, making the voice service using the original CS domain voice service can be completed, so LTE Network, it only has to deal with PS domain data services this function. So how to provide consumers with LTE voice services, how to achieve 2G/3G network and LTE interoperability? These issues have gradually been the attention of relevant personnel.This paper discussed the necessity and the LTE voice service based on the LTE architecture, and discusses the key technology of LTE, including the OFDM, MIMO technology; then through the LTE voice service continuity problems, analysis of the comparative analysis of dual standby terminal program, CSFB and volte content, network architecture and the key technology and the three schemes. Finally, through a CSFB test and the test is not switched on case analysis that CSFB could be used as a LTE deployment plan at the beginning of the transition, volte is the ultimate voice solutions.