运营商LTE语音解决方案研究

Research of LTE Voice Evolution for Network Operator

LTE(Long Term Evolution)网络现已在全球迅猛发展,LTE的语音解决方案也是LTE网络及终端发展中业界重点关注的一个问题。LTE网络是完全基于统一分组域架构的,无法提供像3G和2G那样基于电路域的语音通话,而要实现全网VoLTE的语音解决方案,需要全网部署IMS网络,这在网络部署前期无法实现的。本文主要介绍了LTE网络的各种语音解决方案,分析其优劣,并对运营商不同时期部署怎样的语音解决方案进行深入分析。

LTE(Long Term Evolution) network is developing at a very high speed all over the world. LTE voice solution is one of the key points in the LTE network and terminals. LTE network is totally based on the packet-switched architecture, which can not provide custumers with voice service in the circuit-switched network. We need to implement the IMS network to make the VoLTE work. However, it is impossible in the early days of the network implementation. This article introduces several voice solutions over LTE network, analyses good and bad aspects about each solution, and has a deep analysis about what solution should be implemented for operators in different periods.