摘要
随着VoLTE技术的日益发展成熟,VoLTE代替传统的CSFB,已经成为LTE网络发展的趋势。主要研究了LTEFDD网络中不同语音编码方式在室外和室内场景下的VoLTE通话性能。测试结果表明,WB-AMR23.85kbit/s编码的MOS分相比WB-AMR12.65kbit/s和NB-AMR12.2kbit/s,无论在小区中心还是小区边缘都有明显优势,同时各个编码的覆盖距离差别不大,因此建议实际LTEFDDVoLTE部署采用WB-AMR23.85kbit/s作为VoLTE语音编码方案。
With the development of VoLTE technology,VoLTE instead of traditional CSFB has become the trend of LTE network development. It mainly studies the VoLTE voice performances of different voice coding schemes in LTE FDD network,including outdoor and indoor scenarios. The experiment result shows that WB-AMR 23.85 kbit/s coding can get more MOS score than the WB-AMR 12.65 kbit/s coding and 12.2 kbit/s coding in both cell central and cell edge areas. At the same time,different voice coding schemes have similar coverage. Therefore,WB-AMR 23.85 kbit/s is suggested as the voice coding scheme in the deployment of VoLTE in LTE FDD network.
作者
李佳俊
陈丰伟
裴伯硙
刘雨琨
Li Jiajun;Chen Fengwei;Pei Bowei;Liu Yukun(Unicom Vsens Communications Co.,Ltd.,Beijing 100032,China)
出处
《邮电设计技术》
2019年第6期33-35,共3页
Designing Techniques of Posts and Telecommunications
