| Since its birth in 1986,mobile communication technology has become the core engine to accelerate the reform of the national economic system and realize the threedimensional social informatization after nearly 30 years of rapid evolution.With the large-scale deployment of 4G network infrastructure in China,users' demand for diversified new services such as social networks,online video and cloud games shows a trend of geometric growth.As a result,it is urgent to provide effective solutions to such difficult problems as high load capacity and fast fault location.In addition,by eliminating the intermediate level of 3G network architecture,LTE has evolved from traditional hierarchical network structure to a more flexible flat trend,which significantly reduces the number of signaling nodes and effectively reduces the user plane delay,but also leads to the inability to directly obtain the information of air interface resources.Since the air interface monitoring analyzer can present and analyze the multi-dimensional indicators of the air interface data,it plays an important role in the construction,operation and maintenance and optimization of the communication network.The topic of the thesis is based on the national science and technology major project “New Generation Broadband Wireless Mobile Communication Network”.Under the research background of LTE-A air interface monitoring analyzer,LTE-A data source simulation platform mainly completes the work of assisting analysis and data verification in the instrument development process.On the premise of in-depth study of the 3GPP protocol,the design and development of the platform is completed.The main work of the thesis is as follows:(1)Through the research on the architecture and functional requirements of the LTEA air interface monitoring analyzer,combined with the theoretical basis of the LTE-A physical layer,the functional requirements of the data source platform are explained.(2)According to the functional requirements of the LTE-A air interface monitoring analyzer data source simulation platform,the overall downlink design scheme of the platform is proposed.The platform is built with a low-coupling design concept and the entire process of simulating physical layer downlink data communication is invoked by encapsulating each functional module.(3)The key analytical node data is extracted according to the test requirements,and the flowability and functionality of the data source platform are evaluated by using graph,constellation and other representations.The correctness of the design is verified by data comparison.The platform can be used as an important analysis tool to achieve effective testing of monitoring instruments.At present,the analytical mean time consumption of the data source simulation platform designed in this thesis is 1400 ms.In the actual test,the decoding error rate of the monitoring data of LTE-A air port monitoring analyzer is less than 0.01%.In summary,the data source platform provides effective support for the development of instruments. |
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