高铁VoLTE语音质量提升研究  

Research on Improving Speech Quality of High-speed Railway VoLTE

作　　者：龙青良 刘光海[1] 薛永备[1] 肖天[1] 

机构地区：[1]中国联通网络技术研究院,北京100048

出　　处：《邮电设计技术》2017年第6期51-56,共6页Designing Techniques of Posts and Telecommunications

摘　　要：首先对高铁场景下VoLTE语音质量与无线信号的关联性进行分析,给出了为满足一定语音质量所需的RSRP和SINR的边界值。其次对高铁场景下频繁切换、RRC重建以及多普勒频移等因素对VoLTE语音质量的影响进行深入分析,最后有针对性地给出了VoLTE语音质量的提升方法,为VoLTE后续在高铁的部署及优化提供指导。Firstly, the correlation between VoLTE speech quality and wireless signal is analyzed. The boundary values of RSRP and SINR is given to meet certain speech quality of high-speed railway scenarios. Secondly, the frequent handover, RRC reconstruction and Doppler frequency shift and other factors on the voice quality of VoLTE are analyzed, and finally it gives the VoLTE voice quality improvement method for VoLTE follow-up in the deployment and optimization of high-speed railway to provide guid- ance.

关 键 词：高铁 VoLTE 语音质量 MOS 

分 类 号：TN929.5[电子电信—通信与信息系统]