成都移动TD-LTE无线传播模型校正及其应用

发布时间：2018-05-05 22:56

本文选题：TD-LTE + 无线传播模型　；参考：《电子科技大学》2017年硕士论文

【摘要】：随着TD-LTE网络大规模的建设,目前我国移动通信网络已跨入LTE时代。与2G、3G移动通信网络相比,4G网络采用新增的高频段(2.6GHz)进行无线传播,而高频段4G网络覆盖范围明显低于现网2G、3G网络,因此传统的传播模型规划方案已远不能满足4G网络规划的需求。在此背景下,TD-LTE网络的规划组网问题也越来越引起重视,而传播模型是无线网络规划的重要因素之一并直接影响了网络规划的准确性。因此,为了更好的保证工程建设中投资的有效性和合理性,在网络建设初期需对网络网络传播模型校正,以提供更加准确的预测结果,为后续无线网规网优工作奠定良好的基础。本论文首先结合无线电磁波理论,研究和分析了无线环境中的电波传播方式,及传播过程中易受到各种因素影响,如用户移动速度、传播环境、业务类型、用户分布等,并简述了目前无线网络规划中常用几种传播模型。通过对传播模型校正技术的分析和理解,并结合实际环境进行验证校正方案设计,并对校正方法和校正结果进行验证。最后通过使用专业的仿真软件ANPOP对现网相类似场景的传播模型进行仿真,并通过分析仿真预测数据和实际路测数据基本相吻合,校正结果基本符合实际测试环境模型。最后将校正结果应用在实际工程上,通过仿真软件预测数据便可准确判断现网络存在各种实际问题如越区覆盖、弱覆盖、重叠覆盖、高干扰和速率偏低等区域。从而能够有效地、准确地对现网网络的规划和优化起到指导和参考的作用,及提高了后续续网络优化的效率。
[Abstract]:With the large-scale construction of TD-LTE network, China's mobile communication network has entered the era of LTE. Compared with the 2GN 3G mobile communication network, the 4G network uses a new high frequency band of 2.6GHz) for wireless transmission, and the coverage of the high-frequency 4G network is obviously lower than that of the current 2GN 3G network. Therefore, the traditional propagation model planning scheme can not meet the needs of 4G network planning. In this context, more and more attention has been paid to the planning and networking of TD-LTE networks, and the propagation model is one of the important factors of wireless network planning, which directly affects the accuracy of network planning. Therefore, in order to better guarantee the validity and rationality of the investment in the project construction, the network propagation model should be corrected in the early stage of the network construction to provide more accurate prediction results. It lays a good foundation for the following work of wireless network planning. Based on the theory of wireless electromagnetic wave, this paper studies and analyzes the radio wave propagation mode in wireless environment, and the influence of various factors, such as user moving speed, propagation environment, service type, user distribution and so on. Several propagation models commonly used in wireless network planning are also briefly described. Based on the analysis and understanding of the propagation model correction technology, and combining with the actual environment, the verification and correction scheme design is carried out, and the correction method and the correction results are verified. Finally, the propagation model of the similar scene is simulated by using the professional simulation software ANPOP, and the simulation prediction data and the actual road test data are basically consistent with the actual test environment model by analyzing the simulation prediction data and the actual road test data, and the correction results are basically in line with the actual test environment model. Finally, the correction results are applied to practical engineering, and the prediction data of simulation software can accurately judge the existing network problems such as overpass coverage, weak coverage, overlapping coverage, high interference and low rate. Thus it can effectively and accurately guide and reference the planning and optimization of existing network and improve the efficiency of subsequent continuous network optimization.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN929.5

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