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本文基于当前社会对网络化、分布化、远程化、非线性和智能化的要求,以嵌入式Web传感器为研究对象,分析了基于以太网的远程测控系统。侧重研究了嵌入式系统中引进人工神经网络的具体实现方法。成功地将BP网络应用在ARM平台,实现了对复杂非线性问题的准确处理,该方法为神经网络走进嵌入式Web传感器领域提供了一条廉价有效的途径。 相似文献
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在关注信息通信技术对国民经济其他产业可持续发展影响的同时,信息通信产业作为一个巨大的产业,其自身的可持续发展问题的研究也十分重要.当前发展最迅猛的无线通信领域的发展问题,引起国际社会的普遍关注,特别是诸如3G、WLAN等热点问题.从技术发展的角度,该如何把握无线通信产业的未来趋势呢? 相似文献
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The network testbed based on software defined networking (referred as SDN testbed) has attracted extensive attention in the academic and industrial circles in recent years,and there have been many valuable cases of system/platform construction.Therefore,an overview of the SDN testbed was intended to conduct in the global scope.Firstly,the advantages of the SDN testbed and the basic design principles of the large-scale SDN testbed was explored comparing with the traditional network testbed.Secondly,in-depth analysis of existing SDN testbed projects was provided from the aspects of the project objectives and progress,the key technologies,network deployment,and featured applications.Finally,the challenges faced in this field were described in terms of network slicing,light and wireless convergence,security,and reliability.Future research directions are also suggested. 相似文献
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在三网融合形势下,多媒体业务与数据传输需求不断增加,对传统骨干传输网络提出更高的要求。传统的基于WDM、SHD技术的光纤通信网络虽可满足传输容量需求,但存在成本较高、扩展和调度能力差、业务多样化能力弱等问题,不能进行有效的组网,难以满足未来发展的需要,因此选用新一代的OTN技术进行组网成为发展的必然趋势。通过相关资料研究,结合工作实践经验,对OTN技术的特点、OTN在光通信网络中的组网方式进行总结分析,以期促进OTN技术的应用与发展。 相似文献
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无线Mesh网络技术在油田单位中的应用分析 总被引:1,自引:1,他引:0
通过油田数字化建设实现远程视频监控、闯入预警、功图法计量、电子巡井、数据采集等功能,建立起一套现代化的管理决策系统。如何保障数据从复杂的现场地理环境中传输到各个井站管理平台是信息网络建设的难点。通过对油区地理位置和各种网络传输技术分析研究,通过现场试验应用,选择无线Mesh网络组网技术为实现方案,并就无线Mesh网络技术在油田应用情况做以阐述。 相似文献
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With the improvement for comprehensive and objective understanding of the network system,the research and application of network system security metrics (NSSM) are noticed more.The quantitative evaluation of network system security is developing towards precision and objectification.NSSM can provide the objective and scientific basis for the confrontation of attack-defense and decision of emergency response.The global metrics of network system security is a crucial point in the field of security metrics.From the perspective of global metrics,the status and role of global metrics in security evaluation were pointed out.Three development stages of metrics (perceiving,cognizing and deepening) and their characteristics were analyzed and summarized.The process of global metrics was described.The metrics models,metrics systems and metrics tools were analyzed,and their functions,interrelations,and features in security metrics were pointed out.Then the technical challenges of global metrics of network systems were explained in detail,and ten opportunities and challenges were summarized in tabular form.Finally,the next direction and development trend of network system security metrics research were forecasted.The survey shows that NSSM has a good application prospect in network security. 相似文献
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The current Internet faces a huge increase in video traffic and industrial machine applications,causing a lot of congestion and packet delays.Besides,many network applications,such as industrial Internet,telemedicine,driverless,VR games,etc,require a latency from 1 to 10 milliseconds and jitters within microsecond.But traditional network can only reduce the end-to-end latency to tens of milliseconds.Under this background,how to transit from “best effort” to“punctuality,accuracy”,controlling the end-to-end delay has become a hot field of global network research.The application scenarios and requirements of the deterministic network were introduced,and the main research results of the current parties were described as well as the trend of development and core issues were summarized.It hopes to provide a reference and help for the research in this field. 相似文献
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目前,SDN技术已成为ICT领域的热点技术之一。本文从SDN技术标准进展、产业发展现状以及SDN对产业发展的影响等3个方面系统阐述了SDN发展的整体概况,分析了不同标准组织的标准化研究重点以及设备厂商不同的解决方案路径。 相似文献
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SDN试验床网络虚拟化切片机制综述 总被引:1,自引:0,他引:1
未来网络体系架构和关键技术的研究需要灵活开放的测试验证环境,基于传统分布式的网络架构难以达到动态虚拟化、有效管控和新协议灵活部署的需求。随着软件定义网络(SDN)技术的出现和发展,上述问题找到了有效的解决途径,因此,基于SDN构建网络试验床成为了近年来该领域的主流研究方向之一。其中,基于SDN的网络虚拟化切片技术更是试验床中的核心支撑技术,可以根据不同试验的需求切分物理网络资源,从而提供并行、独立的网络环境。将重点研究基于SDN的试验床中使用的网络虚拟化切片机制,从“流量识别和切片网络标识”、“虚拟节点抽象”和“虚拟链路抽象”这3个关键技术出发,对当前基于SDN试验床中的典型网络虚拟化切片机制进行介绍与分析,并总结了该领域未来可行的研究方向。 相似文献
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本文介绍了目前国际上关于下一代互联网的最新研究方向和热点——以内容为中心,并以其中的代表内容中心网络(CCN)为例,阐述了新一代互联网体系的基本架构和框架模型,同时对其他类似架构方案做了简单的介绍,希望能够引起国内相关主管部门和研究机构的重视,开展我国在相关领域的自主研究,尽快参与国际合作和竞争。 相似文献