Research And Implementation Of Multi-protocol Association Technology For Uu Interface In LTE-A Network

With the popularization and rapid development of LTE-A network technology,mobile terminal data service shows explosive growth.Signaling monitoring system is always selected to analyze multi-dimensional network indicators,locate network fault and manage network centrally by operators,which can enhance user experience.Due to the flatter structure of the LTE-A system access network,the traditional signaling monitoring system is difficult to locate LTE-A network problems and analyze Uu interface signaling procedure.Therefore,the research and development of the LTE-A network air interface monitoring system has currently become the popular problem.The thesis relies on the National Science and Technology Major Special Project.For the explosive growth of mobile data services in LTE-A network and the low efficiency of multi-protocol association analysis process,on the basis of traditional signaling monitoring system,a multi-protocol association system of Uu interface in LTE-A network is designed by using big data technology(storage,processing and analysis)and multi-protocol association analysis technology.According to the requirement of Uu interface multi-protocol association analysis,the signaling monitoring module of the multi-protocol association system is designed and developed,and the corresponding functional verification and multi-protocol association result analysis are completed.The main research work is as follows:1.Based on theoretical research of LTE-A network,Uu interface and Layer 3 protocol,the access mode of the LTE-A air interface analyzer are analyzed.Then,an overall design scheme of LTE-A network Uu interface multi-protocol association analysis is proposed based on the requirements analysis of the multi-protocol association system.2.The signaling monitoring module is designed and implemented in detail.Using the modular design idea,the signaling monitoring module can be divided into the protocol decoding module,CDR synthesis module and multi-protocol association module.Every decoding function is packaged as separate module by adopting the method of separating the function implementation and declaration in protocol decoding module,which can improve the portability and maintainability of the code.The CDR synthesis module realizes the integration of the same user data signaling process and service data flow by using multi-protocol association technology,and completes the classification processing and playing back messages of Layer 3 protocol procedures.The multi-protocol association module uses hash algorithm the associated backfilling method to realize data streams association of multiple interface and cross-protocol layer.Finally,a complete call detail record of the user is formed.3.Combining the data collected in LTE-A network Uu interface,the signaling monitoring module is functionally verified and analyzed in this thesis.The results show that the proposed scheme can reliably achieve the association analysis of user service flow and signaling process.Currently,the designed signaling monitoring module has been successfully applied in practical project and it runs steadily and performs well in the experimental test environment,which provides the effective support for maintenance of network construction and improving user experience.