LTE FDD VoLTE性能研究

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英文篇名：Research on VoLTE Performance in LTE FDD Network 作者：李佳俊 ; 陈丰伟 ; 裴伯硙 ; 刘雨琨 英文作者：Li Jiajun;Chen Fengwei;Pei Bowei;Liu Yukun;Unicom Vsens Communications Co.,Ltd.; 关键词：LTE ; FDD ; VoLTE ; 语音质量 ; 覆盖 英文关键词：LTE FDD;;VoLTE;;Voice performance;;Coverage 中文刊名：YDSJ 英文刊名：Designing Techniques of Posts and Telecommunications 机构：联通华盛通信有限公司; 出版日期：2019-06-20 出版单位：邮电设计技术 年：2019 期：No.520 语种：中文; 页：YDSJ201906010 页数：3 CN：06 ISSN：10-1043/TN 分类号：39-41

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LTE FDD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-AMR 23.85 kbit/s编码的MOS分相比WB-AMR 12.65 kbit/s和NB-AMR 12.2 kbit/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LTE FDD VoLTE部署采用WB-AMR 23.85 kbit/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.

引文

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