WLAN技术在移动通信服务中的应用

【作者】 彭宇峰；

【导师】 欧阳松；

【作者基本信息】 中南大学 ， 计算机应用技术， 2004， 硕士

【摘要】 随着计算机技术和网络技术的迅速发展，人们对网络业务的需求越来越高。无线网络在技术上的逐渐成熟，产品种类的不断增加和成本的下降使得无线网络在全世界有了很大的发展。本论文是作者作为湖南移动通信WLAN系统建设的主要设计和实施人员之一，对湖南移动通信WLAN系统设计和实施的全过程进行的研究与探讨。 论文介绍了WLAN技术在移动通信服务中的应用的基础理论，WLAN的技术特点及优势，并结合湖南移动WLAN系统的需求，针对WLAN系统的传输方式，技术标准的选择，网络拓扑的逻辑和物理构造，IP地址的分配，以及安全保障方案的选择进行了研究和论证，根据论证提出了湖南移动通信WLAN系统的总体设计方案；然后讨论了其中的用户认证方案的设计和计费方案的细化的设计和实现。为提高WLAN网络的效率，本论文还提出并深入研究了如何将WLAN与GSM系统合路，用GSM系统的天馈系统将WLAN的信号辐射出去的新方案，以及这个合路方案的详细设计，在一个试点环境中的实施、测试等过程。对遇到的一些问题给出了解决的方法，为类似方案的深入研究建立了基础。 最后，论文就WLAN的发展前景进行了探讨与研究。更多还原

【Abstract】 With the rapid growth of computing and network technology, the demand for network service has gone up quickly. As with the maturity of the wireless network technique, the increase of the product category, and the decrease of the product cost make the wireless network a significant development allover the world. In this paper the author, one of the main designers and the developers of Hunan Mobile WLAN System, gives a closer study and research for the whole procedures of the Hunan Mobile WLAN System.The paper discusses the basic theory of WLAN application, features and advantages of WLAN system. Based on the requirements of the Hunan WLAN system, the paper discusses and testifies the transmission models, the logical and the physical topologies of the WLAN networks, the assignment of the IP addresses, and the security schema for WLAN system. According to the study of the system, the paper describes the implementation of the system. Then the design and the implementation of the user authentication for the system and the design and the implementation of the billing schema for WLAN system have been studied. To improve the performance of the WLAN system, the paper describes a new approach and its design. In the new approach, it joins WLAN signal with GSM system, then use the GSM system to send WLAN signal out. The new approach has been implemented in a test site successfully. Its successful implementation illustrates that the new design is feasible and set the bases for more serious research of similar approaches. The paper also discusses the implementation, and the test procedures. It also describes the solutions for some problems in the implementation of the new approach.At the last, the paper describes the expectation of WLAN system.更多还原