LTE系统上行链路质量提升的方法研究  

Research on methods of uplink quality improvement in LTE system

作　　者：谢玉铭 虞小辉 XIE Yu-ming;YU Xiao-hui(China Mobile Group Shanghai Co.,Ltd.,Shanghai 200003,China)

机构地区：[1]中国移动通信集团上海有限公司,上海200003

出　　处：《电信工程技术与标准化》2021年第10期57-62,共6页Telecom Engineering Technics and Standardization

摘　　要：随着VoLTE业务的商用以及4G用户大规模增加,4G网络不仅承担数据业务,还承担着语音业务,这对上行链路质量提出了更高的要求。本文利用功率余量值表征LTE上行链路质量,通过挖掘并调整上行性能参数对其进行快速地提升。结合核心城区低功率余量TOP小区的实际情况,探究低功率余量报告小区占比高的主要原因,并提出一套区别于传统优化方式的参数优化方案以实现低功率余量报告小区占比下降,达到上行链路质量提升的目的。通过试点验证可知,目前核心城区上行低功率余量报告问题小区占比已由3.94%降至1.48%。With the commercialization of VoLTE services and the large scale increase of 4G users,4G networks not only undertake data services but also voice services,which puts forward higher requirements for uplink quality.With the increasing complexity of network structure and wireless environment,LTE link quality restricts the performance of LTE network to a great extent.The degree of interference,coverage,or capacity limitation of the LTE network directly affects the actual perception of users such as call quality,upload and download rates,and time delay,and also causes a series of problems such as failure to connect,drop calls and handover failure.In this paper,the power margin value PH is used to characterize the uplink quality of LTE,and the uplink performance parameters are mined and adjusted to quickly improve the uplink quality.Combined with the practical problems of top cells with low power margin in core urban area,this paper explores the main reasons for the high proportion of low PHR cells and proposes a set of parameter optimization scheme different from the traditional optimization method,so as to reduce the proportion of low PHR cells and improve the uplink quality.Through pilot verifi cation,it can be seen that the proportion of cells with low PHR problems in the core urban area has been reduced from 3.94%to 1.48%.

关 键 词：上行链路质量 低PHR 核心城区 参数优化 

分 类 号：TN929.5[电子电信—通信与信息系统]