基于参数优化提升VoLTE用户语音感知的技术研究

Technological research on enhance voice perception of VoLTE users based on parameter optimization

本文主要探索VoLTE网络优化的过程中,通过后台参数的组合调整来降低VoLTE分组丢失率和提升MOS值的方法。在本文中,以某品牌设备的后台参数为基准,调整站点的pdcchCfiMode、pdcchLaGinrMargin、dlMaxHARQTx/ulMaxHARQTx、tReorderingUl/tReorderingDl等参数,提高信道聚合度,增加MAC层HARQ的重传次数,增大RLC层排序等待定时器,可得到明显的分组丢失率下降和MOS值提升的效果,从而提升VoLTE的语音质量,高效优化VoLTE网络。本研究可大范围推广,提高VoLTE用户的感知。

In the process of VoLTE network optimization,this essay mainly explores the methods of reducing the packet loss rate of VoLTE and increasing the value of MOS through the combination and adjustment of background parameters.In this essay,basing on the background parameters of some equipment,the parameters such as pdcchCfiMode,pdcchLaGinrMargin,dlMaxHARQTx/ulMaxHARQTx and tReorderingUl/tReorderingDl are adjusted to improve the degree of channel aggregation,increase the retransmission times of MAC layer HARQ,and increase the RLC layer sort wait timer.The obvious decrease of packet loss rate and the improvement of Mos value can be obtained,so as to improve the voice quality of VoLTE and optimize the VoLTE network efficiently.It can be widely promoted to improve the perception of VoLTE users.