TD-LTE与WLAN系统干扰研究

发布时间：2018-01-26 12:12

本文关键词： TD-LTE WLAN 室内分布确定性分析干扰规避　出处：《浙江工业大学》2014年硕士论文　论文类型：学位论文

【摘要】：随着移动互联网及智能终端的快速发展,数据流量呈爆发性增长,用户对移动宽带的需求日益增加。根据移动运营数据统计,90%以上的数据流量产生于室内。随着移动“四网协同”战略的提出,TD-LTE商用的大规模开展,GSM、TD-SCDMA、WLAN、TD-LTE四网共存的现象普遍存在。室内环境下各个系统间必会产生各种干扰问题,室内覆盖将是未来建设的重点与难点。根据某省市移动统计数据分析,WLAN作为对GSM和TD-SCDMA网络的有效补充,承载着大部分的室内流量,研究与分析TD-LTE与WLAN系统间的干扰,提出相应的规避措施,对未来TD-LTE的规划与部署具有非常重要的意义。本文的主要工作和成果如下：1)介绍了TD-LTE和WLAN两个系统的基本原理、技术特点等,并针对室内多系统共存干扰问题,阐述了干扰产生的原理及危害,研究了不同干扰的分析方法。2)分析了TD-LTE和WLAN系统可能存在的干扰类型以及干扰模式,通过规范的确定性分析方法,明确了合路部署场景下的隔离度要求和独立部署场景下的空间隔离距离要求。并结合移动现网和不同厂家设备,对以上两种场景分别进行干扰测试。测试结果表明,TD-LTE与WLAN系统间的干扰主要是独立部署场景下TD-LTE基站对WLAN AP的干扰。3)将理论计算和现场测试结果进行对比,分析其产生干扰的原因。在研究各种干扰规避措施的基础上,提出相应的规避措施,并再次进行测试验证,证明提出的措施是否合理、有效、可实施。为TD-LTE与WLAN室内覆盖过程中产生的干扰问题,提供了有价值的参考依据。
[Abstract]:With the rapid development of mobile Internet and intelligent terminals, the data flow is increasing explosively, and the demand for mobile broadband is increasing day by day. According to the statistics of mobile operation data. More than 90% data traffic is generated indoors. With the development of mobile "four-network cooperation" strategy, the large-scale development of TD-LTE commercial system will lead to the development of GSM-TD-SCDMA-WLAN. The phenomenon of the coexistence of TD-LTE four nets is common. In the indoor environment, there will be a variety of interference between the systems, indoor coverage will be the focus and difficulty of the future construction. According to some provinces and cities mobile statistical data analysis. As an effective supplement to GSM and TD-SCDMA networks, WLAN is carrying most of the indoor traffic. The interference between TD-LTE and WLAN system is studied and analyzed. Put forward the corresponding circumvention measures. The main work and results of this paper are as follows: 1) the basic principles and technical characteristics of TD-LTE and WLAN are introduced. Aiming at the interference problem of indoor multi-system coexistence, the principle and harm of interference are expounded. The possible interference types and interference modes in TD-LTE and WLAN systems are analyzed, and the canonical deterministic analysis method is used. It clarifies the isolation degree requirement under the combined deployment scenario and the space isolation distance requirement under the independent deployment scenario, and combines the mobile network and the different manufacturer equipment. The interference tests are carried out on the above two scenarios, and the test results show that. The interference between TD-LTE and WLAN system is mainly the interference of TD-LTE base station to WLAN AP under the independent deployment scenario. 3) the theoretical calculation and field test results are compared. On the basis of studying various kinds of interference circumvention measures, the corresponding circumvention measures are put forward and tested again to prove whether the proposed measures are reasonable and effective. It can be implemented. It provides a valuable reference for the interference in the process of TD-LTE and WLAN indoor coverage.
【学位授予单位】：浙江工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.5;TN925.93

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