LTE语音模式选择及建设方案

LTE voice mode selection and construction program

由于LTE只能提供分组业务,而对语音、短信业务还存在长期的需求。文章针对在LTE网络下语音/短信业务实现的几种方式进行深入的研究和分析,尤其关注CSFB和IMS语音共存下对EPC核心网的改造要求,其中重点阐述了CSFB实现流程、VOLTE-IMS语音实现和e SRVCC切换技术等。

Because LTE can only provide the packet service, and the demand for voice and short message service is still in a long term. The paper deeply researches and analyzes LTE network in voice / short message service implementation of several ways, especially in the CSFB and IMS voice under the coexistence of EPC core network transformation requirements, which focuses on the CSFB implementation process, VOLTE-IMS speech implementation and esrvcc switching technology etc.