高铁场景下VoLTE语音质量提升研究

Research on Voice Quality Improvement of VoLTE in High Speed Rail Scene

中国目前的VoLTE业务已经能够为基础网络用户提供可靠的通信支持,但在对网络传输有着特殊要求的高铁场景下,VoLTE业务的服务质量与基础网络相比仍有较大差距。为进一步提高高铁场景下的VoLTE语音服务质量,分析了高铁场景下影响VoLTE语音质量MOS值的主要因素,提出优化VoLTE语音质量的思路。通过实验分析了各关键参数分别对高铁场景下VoLTE语音质量的影响,提出一种改进的参数修改方案,并证明了使用修改后的参数能够获得更好的语音质量。

China's current VoLTE service has been able to provide reliable communication support for users in large networks.However,the service quality of VoLTE services in the HSR scene with special requirements for network transmission is still quite different from that of the big network.This article analyzed the main factors which affect VoLTE voice quality MOS value in HSR scene to further improve the voice service quality of VoLTE in HSR(High Speed Rail)scenarios,proposing the idea of optimizing voice quality of VoLTE.It studied and analyzed key parameters of VoLTE wireless optimization,analyzed effects of different key parameters on VoLTE voice quality in HSR scenarios through experiments,and proposed an improved modification scheme of key parameters,which proved that using the modified key parameters can get better voice quality.