低功耗嵌入式网管系统和USB大容量存储设备的设计和开发

发布时间：2018-10-10 10:49

【摘要】：在现代通信网络的分层结构中,“光网络层”指利用光网络设备对数据进行大容量、高速率传输的网络层次。在越来越多的业务需求的驱动下,通信网络需要承载的数据量正在持续增长,这促使光网络规模迅速增长,光网络的网络管理压力与日俱增,同时,光网络的能耗问题也变得越来越突出。因此,为了提高光网络运营管理效率,降低光网络能耗,需要研发低功耗、高效率光网络管理系统。嵌入式系统因为其低功耗、高效率、配置灵活的特点已经在网络管理领域获得了广泛应用。但是,在很长的一段时间内,因为嵌入式系统的处理能力和资源相对有限,其在网络管理系统中通常仅作为代理端使用。今天,随着计算机技术的不断发展和芯片制造工艺的不断提高,嵌入式系统的处理能力不断增强,甚至已经达到能与台式机媲美的地步,所以,在网络管理领域,嵌入式系统可以被赋予更多的功能。 USB大容量存储(USB Mass Storage)设备具有开发周期短、使用简单方便的特点,被广泛应用于金融安全产品、移动存储等领域。本论文一方面依托光网络中的ROADM(可重构光分叉复用)设备,进行了嵌入式网络管理系统的研究；另一方面依托USB设备开发平台,进行了USB大容量存储设备的研究。论文主要内容及创新点如下： 1.通过对现有的网络管理系统架构进行分析,结合当今发展低功耗、高效率网络管理系统的趋势,提出了一套基于嵌入式系统的全功能低功耗、高效率网络管理系统。其不仅可以作为传统的网络管理代理端运行,而且具有独立的网络管理功能,能够不通过管理端即可对被管设备进行监测和控制。 2.基于ARM平台和嵌入式Linux操作系统,研究了嵌入式网络管理系统的设计和开发方法,其间涉及到SNMP网络管理协议、高级Linux编程技术以及多个Linux开源软件包的使用。 3.对嵌入式网络管理系统的功耗进行了分析,提出了降低功耗的方法。 4.研究了具有光盘文件系统(CDFS)的虚拟USB只读光盘设备,给出了USB设备枚举过程、USB Mass Storage Bulk-Only传输过程以及虚拟光盘文件系统的具体实现,具有较好的实用价值。
[Abstract]:In the hierarchical structure of modern communication network, "optical network layer" refers to the network layer which uses optical network equipment to transmit data with large capacity and high speed. Driven by more and more business demands, the amount of data that communication networks need to carry is growing continuously, which makes the scale of optical networks grow rapidly, the network management pressure of optical networks increases day by day, and at the same time, The problem of energy consumption in optical networks is becoming more and more prominent. Therefore, in order to improve the efficiency of optical network operation and management and reduce the energy consumption of optical network, it is necessary to develop a low-power and high-efficiency optical network management system. Because of its low power consumption, high efficiency and flexible configuration, embedded system has been widely used in the field of network management. However, for a long time, embedded systems are usually used as agents in network management systems because of their relatively limited processing power and resources. Today, with the continuous development of computer technology and the continuous improvement of chip manufacturing technology, the processing capacity of embedded systems has been continuously enhanced, even to the point of being comparable to desktop computers. Therefore, in the field of network management, Embedded systems can be given more functionality. USB large capacity storage (USB Mass Storage) device is widely used in financial security products, mobile storage and other fields because of its short development period and simple and convenient use. On the one hand, based on the ROADM (Reconfigurable Optical bifurcation Multiplexing) equipment in the optical network, the embedded network management system is studied; on the other hand, the research of the large capacity storage device of USB is carried out on the basis of the USB device development platform. The main contents and innovations are as follows: 1. Based on the analysis of the existing network management system architecture and the trend of developing low power and high efficiency network management system, a full function low power and high efficiency network management system based on embedded system is proposed. It can not only run as the traditional network management agent, but also have the independent network management function. It can monitor and control the managed equipment without the management end. 2. Based on ARM platform and embedded Linux operating system, the design and development method of embedded network management system is studied, which involves SNMP network management protocol, advanced Linux programming technology and the use of several open source Linux software packages. 3. The power consumption of embedded network management system is analyzed, and the method of reducing power consumption is proposed. 4. This paper studies the virtual USB read-only optical disk device with (CDFS), and presents the USB device enumeration process and the realization of the virtual optical disk file system, which has good practical value.
【学位授予单位】：北京邮电大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TP368.1;TP393.07;TP333.2

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