基于本地路由技术的WiMAX网络小区切换方案研究

发布时间：2018-06-26 14:43

本文选题：WiMAX + 小区切换　；参考：《南京邮电大学》2014年硕士论文

【摘要】：WiMAX网络的出现不仅满足了无线宽带接入的发展需要,也很好的解决了“最后一公里”接入问题。然而移动用户的增多,多媒体业务应用的日益普及都对WiMAX网络性能提出挑战。如何设计合理的切换方案,在用户通信过程中提高数据传输速率和链路资源利用率,是值得研究的课题。针对这一问题,本文提出了一种新的基于路由状态的切换方案,在通信过程中,网络会通知用户进行切换来建立新的基于本地路由的连接路径,这样可以减少数据包在传输过程中经过的路由跳数,增加了数据的传输效率,节省网络资源。本文首先概述了IEEE802.16协议和论坛规范,简单介绍了WiMAX网络参考模型、网络拓扑结构以及各功能实体,重点分析WiMAX移动管理机制,接着介绍了本研发小组创新提出的本地路由技术,描述了该技术的原理及优点。接着,本文在研究现有小区切换方案和、ViMAX网络标准切换机制的基础上,阐述现有切换方案应用于WiMAX网络的不足,并提出了一套基于路由状态的切换方案,设计了具体的切换流程、切换触发判决算法和目标基站选择算法,并通过仿真验证了算法性能。最后,本文在WiMAX网络系统平台下设计实现了切换管理功能,并模拟演示用户间的通信过程、切换过程,进一步完善了现有平台的功能性。
[Abstract]:WiMAX network not only meets the development needs of wireless broadband access, but also solves the "last kilometer" access problem. However, the increasing number of mobile users and the increasing popularity of multimedia applications challenge the performance of WiMAX networks. How to design a reasonable switching scheme and improve the data transmission rate and link resource utilization in the process of user communication are worthy of study. In order to solve this problem, a new routing state based handoff scheme is proposed in this paper. In the process of communication, the network will notify the user to switch to establish a new connection path based on local routing. This can reduce the number of routing hops in the transmission process, increase the efficiency of data transmission, and save network resources. This paper first summarizes IEEE 802.16 protocol and forum specification, introduces the WiMAX network reference model, network topology and various functional entities, analyzes the WiMAX mobile management mechanism, and then introduces the local routing technology proposed by the research and development team. The principle and advantages of this technique are described. Then, on the basis of studying the existing cell handover scheme and the standard handover mechanism of ViMAX network, this paper expounds the shortcomings of the existing handover scheme in WiMAX network, and puts forward a set of handover scheme based on routing state. The switching process, the decision algorithm of switching trigger and the selection algorithm of target base station are designed, and the performance of the algorithm is verified by simulation. Finally, this paper designs and implements the switch management function under the WiMAX network system platform, and simulates the communication process and the switching process between the users, which further improves the functionality of the existing platform.
【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN925.93

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