Research On QoS In LTE Network Applied To Real Service

With the rapid development of communication network,a variety of intelligent phones have been invented to meet people's ends.In the year 2016,Shanghai Telecom introduced Quality of Experience to value the performance of the LTE network.This paper introduces the LTE system,including the evolution of the LTE,from Release 8 LTE to Release 11.This paper introduces some key technologies of LTE and LTE-A.It also introduces LTE EPS QoS.The basic unit of LTE QoS management is the EPS bearer.It introduces the important parameters of the LTE QoS.By doing the rate tests,the delay tests and the packet loss rate tests,this paper values the performance of the three LTE E-UTRAN manufactures now using by the Shanghai Telecom.Before doning tests,we adjusted the PCRF configuration,the PCEF configuration and the radio parameters of the cells.The test results show that the core side of Huawei can successfully establish EPC bearer.On the Wireless side,Huawei,ZTE,Lucent,are able to meet the ends of the TS 23.203 QoS standard of LTE network,and the performances of the Huawei cells are the best of the three manufacturers.Scheduling ZTE cells' QCI=3 principle is to try to meet high priority QCI user.Lucent cells' strategy for QCI=3 is MBR = GBR.The ability of Lucent cells to support high-bandwidth GBR is weak.This paper also introduces the intensive monitoring system of the LTE network now using in SHNOC,which monitoring end-to-end communication network.We standarded the alarm type of three manufacturers,and using the system to automatically relative the LTE domain to other domains.We also achieved to monitor LTE QoE alarm using the intensive monitoring system.This system is now playing an important role in daily use.