基于WiMAX和LTE的近海水域无线网络规划研究

发布时间：2018-01-15 15:42

本文关键词：基于WiMAX和LTE的近海水域无线网络规划研究　出处：《华南理工大学》2014年硕士论文　论文类型：学位论文

更多相关文章： WiMAX LTE 海上电波损耗模型 上海港

【摘要】：随着第四代通信技术的逐渐成熟，它所具有的高速度，高兼容性和高灵活性等特点使人们的生活变得更加便利，然而现今更多的是将其运用在陆地通信系统。对于海洋面积约占地球总面积71.8%的现状，如何开发海洋资源，如何完善海上通信，完成更好的海上信息交互成为科学家以及运营商关注的重点。现有的海上通信系统存在诸如频率数量有限，容纳的用户非常少，通信延迟大，不利于进行语音通信等弊端。相比之下，4G通信技术的优势便显现无疑，若可将其应用于航海通信上，定会使海上通信走向新的篇章。本文首先对WiMAX和LTE技术进行介绍和对比，然后对基站搭建方法和原则进行相应的阐述。将网络规划原则与近海水域的特点相结合，总结出影响近海水域无线网络规划的因素。结合海上信道的特征，考虑海面反射，大气吸收，船体穿透等因素对于电波传输时所造成的损耗，总结出一个海上电波传输损耗模型。参照当今的WiMAX和LTE设备的参数，计算出基站不同高度可以理论覆盖的通信半径。对上海港近海区域的岛屿状况进行分析，使用EXata软件进行场景的搭建，最大程度的复制海上的信道环境并对此场景进行仿真。加载上海港近海领域的三条航道，并针对每条航道提出了两种不同的基站搭建方案，分别使用WiMAX和LTE技术运行场景，统计出在不同场景中船只通信的收包率和端对端延时。首先在两种技术内横向对两种基站搭建方式进行比较选出最佳方案，，再纵向对两种技术的最佳方案进行分析。最终得出在近海水域通信中，LTE技术相比于WiMAX技术在性能上更具优势，但同时搭建维修费用也更为巨大；在岛屿状况简单的情况下首选LTE技术，而岛屿情况复杂时，采用WiMAX技术也不失为一种好的选择。
[Abstract]:With the maturity of 4th generation communication technology, its high speed, high compatibility and high flexibility make people's life more convenient. However, nowadays, more and more of them are used in land communication system. How to develop marine resources and how to perfect maritime communication for the present situation that the ocean area accounts for about 71.8% of the earth's total area. To achieve better offshore information interaction has become the focus of attention of scientists and operators. Existing offshore communication systems such as limited frequency, very few users, communication delay. The advantage of 4G communication technology is obvious, if it can be applied to maritime communication, it will lead to a new chapter in maritime communication. This paper first introduces and compares the WiMAX and LTE technologies, and then expounds the methods and principles of the base station construction, and combines the network planning principles with the characteristics of the offshore waters. Combined with the characteristics of the offshore channel, considering the sea surface reflection, atmospheric absorption, hull penetration and other factors caused by the loss of radio wave transmission. A loss model of radio wave transmission at sea is summarized. The parameters of today's WiMAX and LTE equipments are referred to. Calculate the communication radius which the base station can cover with different heights. Analyze the island condition in the offshore area of Shanghai Port and use EXata software to build the scene. Copy the channel environment of the sea to the greatest extent and simulate the scene. Load the three waterways in the offshore area of Shanghai Port, and propose two different base station construction schemes for each channel. Run scenarios using WiMAX and LTE technologies, respectively. The packet receiving rate and end-to-end delay of ship communication in different scenarios are calculated. Firstly, the best scheme is selected by comparing the two base stations in two different technologies. Finally, compared with WiMAX technology, LTE technology is superior to WiMAX technology in performance, but at the same time, the cost of building and maintenance is more huge. In the case of simple island condition, LTE technology is preferred, and when island condition is complex, WiMAX technology is also a good choice.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.5

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