Optimization And Implementation Of Voice Over Long-term Evolution Network Of Lishui Telecommunication

The most direct influence the long-term evolution voice hosting(VoLTE)technology brings to 4G users is the shorter waiting time as well as higher quality,more natural voice video call effect.So,the operators mainly adopt the long-term evolution technology(LTE)to develop high-quality voice data business.Carrying voice to the rapid development of mobile network data transmission is the important mission of the operators.In today's communications field,operators around the world use 4G network as the carrier of data services,and call function needs to use 2G/3G.Besides,the future development of high-speed voice services is deemed in the field of LTE,which is the inevitable mission of mobile network development.Therefore,VoLTE technology is necessary.It realizes 4G network transmission through IP technology.At present,there are some main problems in VoLTE network: the phenomenon of falling words,switching failure,non-connection,and the urgent requirement for optimization of LTE network.In accordance with the situation of Lishui Telecom VoLTE Network,this thesis probes into VoLTE from three aspects: technical index,analysis idea and practical operation.The main achievements are as follows:(1)As per the weak coverage and multi-interference problems of 4G network,a clear optimization method is summarized.It includes two aspects: weak coverage optimization method and interference optimization method.In terms of coverage,the optimized average RSRP is increased by 5 dBm,the coverage is increased by 4%,and the optimized average SINR is increased 4.7 dB,which satisfies the requirements of Lishui Telecom Group for VoLTE network coverage.(2)This thesis analyzes several kinds of typical cases,namely,the drop class,the unconnected class and the RRC reconstruction failure class.Through the collation and induction of several typical cases encountered in the daily work,several optimization schemes of the key events are obtained,namely the signaling analysis method,the front and rear platform combined troubleshooting method and the RRC reconstruction analysis method.The speech quality is improved by MOS quality improvement method and single pass optimization method,and the proportion of key events is reduced.(3)The typical optimization cases are collected and summarized,which provides a "first masses,and then small crowd,the latter case" for commercial adoption of VoLTE technology.Besides,it points out the face to the point of the wireless network optimization idea.After optimization,the average download rate has increased 5.5Mbps,download rate greater than 12 Mbps ratio is also increased by 5.7%.The optimized average upload rate has risen by 7.4Mbps,and the upload rate greater than 5Mbps is increased by 5.3%,which enhances the user's direct experience.