TD-SCDMA网络优化的研究

发布时间：2018-03-21 20:07

本文选题：TD-SCDMA　切入点：网络　出处：《西安电子科技大学》2014年硕士论文　论文类型：学位论文

【摘要】：随着移动通信技术的快速发展，用户对移动通信业务的需求和运营商提供的通信质量之间矛盾越来越多，移动通信市场的竞争日益激烈，网络质量的优劣已成为运营商争抢客户、把握成败的关键。中国移动作为我国第一个具有自主知识产权的第三代移动通信技术主流标准TD-SCDMA网络运营商，如何为广大客户提供优质、高效的网络质量是面临的一个重要问题。正在运行的通信网络上所作的任何改动都意味着风险，与通信网络追求稳定可靠的宗旨相违背，但是由于宏观经济不断发展、城市建设的不断变迁以及运营商各种业务的开展，通信网络中的无线接入部分不可能是一成不变的，无线网络调整和优化是必然的过程。细致、完善的网络优化，可以改善网络运行性能，降低网络干扰，提高网络接通率，降低业务异常现象，提高网络数据业务能力，改善切换成功率，提升网络容量。网络优化的意义在于维持网络处于较好的运行状态。本文首先对TD-SCDMA的基本原理、关键技术、信令流程及网络优化等进行简单介绍，重点对TD-SCDMA网络中存在的覆盖、掉话、切换、干扰、2/3G互操作等问题结合工作中遇到的优化案例进行分析研究，主要从问题形成原因、解决方法、效果验证等方面进行研究论证。本文研究主要得到了如下结果和结论：（1）对于覆盖问题优化主要从工程参数如天线方位角、下倾角等入手，再结合系统参数来改善小区的覆盖范围，对于严重弱覆盖区域需要增加基站来完善。（2）对于切换问题优化主要从切换时目标小区的状态、源小区和目标小区之间的参数设置是否合理、小区覆盖范围内的无线环境等着手分析，解决好这些问题切换成功率会提升很多。（3）对于掉话问题优化需要判断掉话时问题点的无线环境，从无线环境来确定引起掉话是由覆盖、切换还是干扰引发的。（4）对于干扰问题优化重点在干扰源的判断和确定上，当确定了产生干扰的干扰源，我们就可以针对性的来规避干扰源对我们的干扰情况。（5）对于2/3G问题优化既要关注TD-SCDMA网络侧的参数配置，也要关注GSM网络侧的参数配置，避免出现频繁切换和重选。本文只是对TD-SCDMA网络优化部分方法进行了研究，，随着用户规模和网络结构的不断扩大，网络中的问题越来越繁杂，这就需要我们应用网络优化手段快速定位问题、解决问题，为用户提供更加优质高效的网络。
[Abstract]:With the rapid development of mobile communication technology, there are more and more contradictions between users' demand for mobile communication services and the communication quality provided by operators, and the competition in the mobile communication market is becoming increasingly fierce. The quality of the network has become the key for operators to compete for customers and grasp the success or failure. China Mobile is the first 3G mobile communication technology mainstream standard TD-SCDMA network operator with independent intellectual property rights in China. How to provide high-quality and high-efficient network quality for customers is an important problem. Any changes made on a functioning communications network represent a risk contrary to the purpose of the communication network in pursuit of stability and reliability, but as a result of macroeconomic developments, With the continuous changes of urban construction and the development of various services of operators, the wireless access part of communication network can not be fixed, and the adjustment and optimization of wireless network is an inevitable process. Careful and perfect network optimization can improve network performance, reduce network interference, increase network connection rate, reduce service anomaly, improve network data service ability, and improve handover success rate. Improve network capacity. The significance of network optimization is to maintain the network in a better state of operation. In this paper, the basic principle, key technology, signaling flow and network optimization of TD-SCDMA are briefly introduced, with emphasis on the coverage, dropping and switching in TD-SCDMA network. The interference 2 / 3 interoperability and other problems are analyzed and studied in combination with the optimization cases encountered in the work, mainly from the causes of the problems and the solutions. The main results and conclusions of this paper are as follows: (1) the optimization of coverage problem is mainly based on the engineering parameters such as antenna azimuth angle, downdip angle, etc. Combining system parameters to improve the coverage of the cell, for the serious weak coverage area need to add a base station to improve. 2) for the handoff problem, the state of the target cell is mainly optimized from the handover. Whether the setting of parameters between the source cell and the target cell is reasonable or not, and whether the wireless environment in the area covered by the cell is reasonable or not, and so on, To solve these problems, the success rate of handoff will be improved a lot.) for the optimization of the drop problem, we need to determine the wireless environment of the problem point when the call is dropped. From the wireless environment, we can determine whether the drop is caused by overlay. Switching or interference induced.) the optimization of interference problem is focused on the judgment and determination of interference source, when the interference source is determined, We can avoid the interference of interference sources to us. (5) for the 2 / 3G problem, we should not only pay attention to the parameter configuration of TD-SCDMA network side, but also to the parameter configuration of GSM network side so as to avoid frequent handoff and reselection. This paper only studies some methods of TD-SCDMA network optimization. With the continuous expansion of user scale and network structure, the problems in the network become more and more complicated, which requires us to use network optimization means to quickly locate the problem and solve the problem. To provide users with a more quality and efficient network.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.53

【参考文献】