基于ROF和嵌入式系统的家庭网关设计

发布时间：2019-06-19 18:52

【摘要】：目前，家庭网络综合业务呈爆发式增长，现有的无线接入技术的带宽问题成为家庭网络综合业务发展的“瓶颈”。家庭网关(HG)作为家庭内部网络与外部网络连接的枢纽，决定着家庭内部网络与外部网络的连接速度。本论文首先给出了一种基于光纤无线融合接入网中家庭网关系统的结构方案，并在该结构基础上构建了包括60GHz毫米波网关模块、WiMax网关模块和子网关系统模块的主网关系统。通过采用ROF技术在物理上实现了60GHz毫米波网关模块和WiMax无线网关模块，并同时给出了一种基于ARM9和Linux的嵌入式子网关系统的实现方案。该子网关系统通过采用S3C2440A芯片作为子网关系统的处理器，并以该处理为核心扩展子网关系统的硬件设备。结合软件平台用户可通过网页的形式实现子网关系统的远程访问和家庭网络设备管理。在硬件平台设计方面，本文给出了以S3C2440A处理器为核心扩展了SDRAM模块、Ethernet模块、UART模块、NandFlash模块、温度传感模块和基于WiFi的无线传输模块。在软件平台的设计方面，本文第一步修改并移植了boot，然后在Linux内核中添加扩展各个硬件模块的驱动程序。最后将修改后的Linux内核和文件系统等移植到子网关系统中；第二步，，在操作系统Linux的基础上，分析和设计子网关系统中的Web服务器，并引入轻型嵌入式数据库SQLite，从而实现用户通过以网页的形式远程访问子网关系统。为了实现与家庭网络设备通信，本文的设计了家庭网络协议，并在此基础上通过编写CGI应用程序和基于HTML语言的网页程序实现动态HTTP请求。最后对网关系统Web服务器和CGI应用程序的响应时间做了测试和分析，证明了子网关系统方案的达到了实际效用的要求。
[Abstract]:At present, the integrated service of home network is growing explosively, and the bandwidth problem of existing wireless access technology has become the bottleneck of the development of integrated service of home network. As the hub of the connection between the home internal network and the external network, the home gateway (HG) determines the connection speed between the home internal network and the external network. In this paper, a structure scheme of home gateway system based on optical fiber wireless fusion access network is presented, and the main gateway system including 60GHz millimeter wave gateway module, WiMax gateway module and subnet gateway module is constructed on the basis of this structure. The 60GHz millimeter wave gateway module and WiMax wireless gateway module are physically implemented by using ROF technology, and an implementation scheme of embedded sub-gateway system based on ARM9 and Linux is given at the same time. The sub-gateway system uses S3C2440A chip as the processor of the sub-gateway system and uses the processing as the core to extend the hardware equipment of the sub-gateway system. Combined with the software platform users can realize the remote access of the sub-gateway system and the management of home network equipment through the form of web pages. In the aspect of hardware platform design, this paper extends SDRAM module, Ethernet module, UART module, NandFlash module, temperature sensing module and wireless transmission module based on WiFi with S3C2440A processor as the core. In the design of the software platform, the first step of this paper is to modify and migrate boot, and then add the driver to the Linux kernel to extend each hardware module. Finally, the modified Linux kernel and file system are ported to the sub-gateway system. Second, on the basis of the operating system Linux, the Web server in the sub-gateway system is analyzed and designed, and the light embedded database SQLite, is introduced to realize the remote access to the subnet shutdown system by users in the form of web pages. In order to communicate with home network equipment, the home network protocol is designed in this paper, and the dynamic HTTP request is realized by writing CGI application program and web page program based on HTML language. Finally, the response time of Web server and CGI application program in gateway system is tested and analyzed, and it is proved that the scheme of subnet shutdown system meets the requirements of practical utility.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP368.1;TP393.05

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