基于PTD2112的VoLTE 4G手机研究

Research of VoLTE 4G Mobile Phone Based on PTD2112

LTE模式下主要的语音解决方案有双待机方案、CSFB和Vo LTE。基于Vo LTE的方案,有功耗低、软件健壮度好、话音数字信号处理方便等方面的优势。提出了一种采用PTD2112的Vo LTE 4G手机实现方法,IP电话采用实现简单的SIP协议,核心业务控制网络是IMS(IP多媒体子系统)网络,配合LTE网络实现端到端的基于分组域的语音、视频通信业务。重点阐述基于PTD2112的Vo LTE 4G手机的硬件与软件设计方法,该4G手机在中国移动的LTE网络运行良好,能实现电话的主叫和被叫。

Three voice solution in LTE mode was described, such as dual mode standby, CS Fall back and Voice over LTE. Focus on VoLTE solution, there are several advantages which include low power consumption, good strong of software, convenience of digital voice processing and so on. A portable design scheme of VoLTE 4G mobile phone on PTD2112 was put forward, which may be implemented by using SIP protocols. IMS is applied to the core service of network, which worked in with LTE network and realized the end-to-end voice and video communication service based on packet switch domain. How to design and implement the hardware and software of VoLTE 4G mo- bile phone on PTD2112 was described, performance testing result of 4G mobile phone indicated that the design runs all right on China Mobile LTE net, which can successfully realize calling and called.