A QoS monitoring system for LTE small cells

Small cells play an important role in the wireless networks for enhancing the radio coverage and capacity. However, to centrally monitor the quality of services (QoS) of several small cell access points (APs) from different equipment providers is very difficult. Therefore, a QoS monitoring mechanism based on TR-069 protocol is proposed to perform the performance management (PM) and configuration management (CM) of small cells in accordance with the data models in the reports of TR-196i2, TR-262 and TR-181. The key performance indicators (KPIs) of long term evolution (LTE) defined by 3GPP are used to evaluate the performance of each small cell and examine periodically statistical reports. According to the small cell's KPI, QoS monitoring mechanism sets up the dynamic threshold based on the weighted moving average. Furthermore, a transmission optimization mechanism based on the Elasticsearch distributed platform is proposed and implemented to analyze the 2,000 measurement collection (MC) files within 30 seconds for generating KPI reports of small cells. The telecom operator can refer to these reports for monitoring the real-time status of each small cell and improving the QoS of wireless networks.