Research And Development Of Service Quality Analysis Module For HTTP In LTE Network Monitoring System

With the rapid development of data services and the rapid proliferation of intelligent terminals, LTE network traffic shows explosive growth from the perspective of telecom operators; data traffic has overtaken voice service to become the major business. For individuals, with the appearance of endless services, the personal experience in networks gets more and more attentions. Since the network monitoring system play an important role in monitoring and maintaining LTE network, as well as improving network experience of users, it is urgent to research and develop a LTE network monitoring system for the telecom operators.Based on "National Torch Program" project, this thesis designs and develops the service quality analysis module for HTTP in LTE network monitoring system. Three main aspects are included in this thesis as follows:1. The LTE network, S1-U interface and HTTP protocol are firstly described by the thesis, including the architecture and function needs of LTE network monitoring system. Then, an overall design scheme of service quality analysis module for HTTP in LTE network monitoring system is proposed.2. Combined with the overall architecture of the scheme, the main module of the system is proposed. The module consists of several modules, which include message decoding, signaling synthesis, associated backfill, data output and up layer quality analysis. Original signal parsing is realized in message decoding module, in which including the parse of key field. Hash indexes and overtime management mechanism is used to realize the classification process and playback of signaling process in signaling synthesis module. Associate backfill module realizes the IMSI backfill of user interface through the correlation between muti-interface communication processes. Data output module saves the result as CSV files in time order. Quality analysis module accomplishes the statistics and analysis for HTTP service in LTE network.3. Combined with the data collected by the LTE network, the thesis verifies the function of the HTTP QoS analysis module of the LTE network monitoring system, and analyzes the indicators of HTTP service in details. Test results show that the design of HTTP QoS analysis module is effective and feasible, which achieves the prospective design goals.At present, the HTTP QoS analysis module has been successfully applied to a customer perception analysis system in LTE network by a certain communication technology company. Meanwhile, the system displays stable online operation and effective monitoring performance, which effectively supports the maintenance and optimization of LTE networks.