泛在网络及U-China战略（上）

介绍了泛在网络（Ubiquitous Network,U网络）及其特点和应用,简述了U网络环境特点及服务方式,回顾了泛在网络及其发展。概述世界各国U战略和U应用及中国“泛在网络”研究进展，分析了泛在网络面临的问题及解决对策，对建设“无处不在的网络中国”作了探讨，展望了泛在风络发展前景。     

泛在网络发展现状分析

通过对泛在网络的概要分析,归纳出泛在网络的抽象模型,即网络融合层、业务汇聚层和应用汇聚层;分析了泛在网络的研究概况,并借助典型案例论述了泛在网络的发展趋势和重要性。     

泛在传感器网络的发展和分析

阐述了未来泛在网络从人与人通信向物与物通信的发展前景,介绍了当前传感器网络行业的应用和典型技术特点,并对传感器网络与电信网融合、形成泛在传感器网络发展过程的阶段和问题进行了分析。     

物联网的技术路线及属性形成

区别于传统强调人与人连接的互联网,物联网是互联网的技术扩展和应用延伸。本文阐述了物联网融合传感器网络、EPC系统和泛在网络的泛在多元信息获取方式,利用电信网、互联网以及广电网等通信网络和各类接入网络实现泛在数据传送,为社会不同行业的应用需求提供泛在服务能力。指出物联网的技术路线是在现有互联网的基础上,通过借鉴和吸收相关学科的研究和应用成果,形成的一个物理空间与虚拟空间、人与物交叉融合的信息服务基础平台;物联网的根本属性是泛在化,即泛在网络,具体体现在泛在互联、泛在技术支持和泛在应用整合等方面。     

泛在网络下的群组移动模型研究现状及展望

群组移动模型的研究对泛在网络下通信协议的设计、算法性能的评价等问题具有重要意义。泛在网络涉及多种终端同时为移动用户服务的场景,有效地整合终端能力需要有效的群组移动模型进行指导。总结了以往Ad Hoc网络下各种群组移动模型的特点和适用场景,结合泛在网络下多终端多网络的环境特点,以用户和业务为中心,对个人服务场景中的群组移动模型的构建方案进行了探讨和展望,提出了关键的技术要求。     

泛在网络关键技术及发展展望

泛在网络是硬件、软件、系统、终端和应用的融合,它把网络空间、信息空间和人们生活的物理空间集成为一个整体,从而使网络如同空气和水一样无所不在和自由地融入人们的生活和工作之中.本文主要介绍了泛在网络的概念及结构,对其关键技术进行了阐述和分析,并对泛在网络面临的问题提出了自己的解决方案,这可为泛在网络的进一步研究提供指导.     

云计算技术在泛在网络中的应用前景分析

泛在应用的广泛性与数据海量化等特征需要一种高效的信息处理手段来提供技术保证。本文首先分析了泛在网络及其应用平台对各类计算与网络资源的初步要求,对当前云计算技术的分布式处理能力进行了评估,并对云计算在未来泛在应用的研究方向提供了参考建议。同时,提出了一种基于云计算技术的泛在应用体系架构,为云计算技术的研究提供了全新的应用领域。     

泛在感知网络的发展及趋势分析

从MarkWeise先生提出泛在网络以来．泛在网络无所不在的网络特性就常常为人们所讨论。泛在网络是一种以人为核心,强调了多种通信和感知技术的网络。本文阐述了泛在感知网络的基础技术模块．包括RFID技术、无线传感网络、云计算、近距离通信技术以及可能的泛在感知网体系架构。通过衡量不同的应用场景和可能的前景及当前的壁垒,文章讨论了泛在感知网对于通信产业的影响。泛在感知网的要素正代表了精确定位、有效识别和随时互联这3个对未来社会发展起决定作用的要素．泛在感知网络一定会成为未来5年或lO年内推动商业发展的重要技术驱动力。     

IP网络中泛播技术的分析

随着 Internet技术的迅速发展 ,服务质量保证体系逐渐成为人们研究的热点。在分析比较了泛播的各种实现技术的基础上 ,探讨了应用于 Qo S网络的泛播技术所需要的特征 ,并分析了在区分服务网络中实现泛播通信的结构及其特点     

基于泛在网络的安全事件描述与风险分析研究

随着互联网信息技术的发展,一个功能强大、消息流动、连接世界各地的泛在网络系统开始出现,并逐渐应用到多个领域当中。这种网络系统是一个自我组织、融合、广泛的系统,用户可以在其中自由交换信息。泛在网络技术的不断发展,其动态性、协同性和异质性等特点导致安全事件变得越来越复杂,掌握和分析方法变得越来越困难。本文旨在探讨泛在网络技术中安全事件定义与风险分析方法,为学术界和实践应用者提供有价值的参考和借鉴。     

建设物联网建设物联网:轻量级寻址技术不可或缺

认为实现物联网中任意物品的准确、高效、安全的寻址对建立真正意义上的互联互通泛在网络具有重要意义;轻量级IP寻址技术能够满足物联网的泛在互联需求,同时适用于物联网终端;基于IPv6编码的轻量级寻址策略在理论研究与实践应用两方面都取得了突破性的成果,将会成为未来物联网终端的重要寻址方式之一。     

移动通信的新发展

在无线网络朝着高速化、宽带化、泛在化发展的过程中,出现了多种多样的无线通信技术,为其带来了丰富的异构性.同时,人们对于个性化智能业务的需求越来越迫切,未来通信系统构想了-个无所不在的、提供普适服务的、开放融合的、以用户为中心的无线世界.     

无线数字家庭网络泛在接入技术

数字家庭网络是通信领域的一个重要分支，近年来发展非常迅速。基于电信网络的数字家庭网络体系结构在中国已经标准化，但就接入方式而言，只是定义了可以使用无线方式，如何组建无线数字家庭网络是未来研究的重点。文章提出了无线数字家庭网络泛在接入概念，给出了无线泛在接入网络体系结构，并就其中的关键技术进行了探讨，包括感知无线电、无线网状网（Mesh）网络理论、通用接入点链路转换机制、业务的QoS保障机制以及电磁兼容和异构系统共存机制等。     

一种开放式的泛在网络体系架构与标准化研究

对下一代泛在网络的体系架构以及关键技术进行了研究和探讨,提出一种开放式的泛在网五层体系架构:感知层、接入层、传输层、中间件层以及应用层;并对泛在网在未来发展过程中所需用遵循的标准及规范等进行了分析和比较,以期为泛在网的应用提供借鉴。     

Ubiquitous networks and their applications

Improvements in microprocessor and radio technologies have led to an increasing interest in wireless networking. At the same time, personal digital electronics have become widespread. To the enthusiast these two trends immediately bring to mind a wide range of esoteric applications. Commercially, by contrast, few substantial applications for embedded wireless networks have been proposed. This article describes the Prototype Embedded Network (PEN), a short-range low-power wireless network specifically designed to be a ubiquitous first point of contact between any and every kind of device. We describe some of the key technical issues encountered in PEN's development and illustrate these by example with applications we have built.     

IPV6技术在泛在网感知延伸层的应用及标准化现状

介绍了泛在网络的基本概念、内涵以及网络架构,概括了泛在网感知延伸层的关键技术,重点分析了感知延仲层IP技术路线,IPv6技术感知延伸层的应用以及相关国际标准化现状。     

UbiXML: programmable management of ubiquitous computing resources

XML technologies provide proven benefits for the configuration management of complex heterogeneous multi‐vendor networks. These benefits have been recently manifested in numerous research, industrial and standardization efforts, including the XMLNET architecture. In this paper we present UbiXML, a system for programmable management of ubiquitous computing resources. UbiXML extends the benefits of XML technologies in the broader class of ubiquitous computing environments, which are inherently complex distributed heterogeneous and multi‐vendor. In UbiXML management applications are structured as XML documents that incorporate programming constructs. Thus, UbiXML allows administrators to build sophisticated management applications with little or no programming effort. While UbiXML builds on several XMLNET concepts, it significantly augments XMLNET to handle management of sensors, perceptual components and actuating devices. Moreover, UbiXML is extensible towards additional ubiquitous computing elements. UbiXML has been exploited in implementing realistic management applications for a smart space. Copyright © 2007 John Wiley & Sons, Ltd.     

End-to-end QoS provisioning in mobile heterogeneous networks

The remarkable advances in information technologies bring a heterogeneous environment for mobile users and service providers. This heterogeneity exists in wireless access technologies, networks, user terminals, applications, service providers, and so on. The ability to provide seamless and adaptive quality of service in such a heterogeneous environment is key to the success of next-generation wireless communications systems. There has been a considerable amount of QoS research recently. However, the main part of this research has been in the context of individual architectural components, and much less progress has been made in addressing the issue of an overall QoS architecture for the mobile Internet. This article first summarizes the state-of-the-art QoS techniques and standardization activities, then examines in detail important challenges in building a ubiquitous QoS framework over the heterogeneous environment, and finally proposes a QoS framework integrating a three-plane network infrastructure and a unified terminal cross-layer adaptation platform to provide seamless support for future applications.     

Ubiquitous Information Services with JAIN Platform

To provide responsive information services in a ubiquitous computing environment, service software and system development are indispensable. A component-based ubiquitous information system with a JAIN (Java APIs for Integrated Networks) platform to achieve seamless transmissions and reach-everywhere communications was designed in our research. In this development, numerous ubiquitous service modules were identified: location management, roaming, mobile IP and WAP networking. These component-based network modules were constructed using a component composition language with component specification and interface definition, running on top of a distributed service architecture using a JAIN platform to distribute the ubiquitous information services to mobile users. Two applications, Wireless-Application-Protocol (WAP) Mail and Video-on-Demand (VoD) services, show that the JAIN-like platform with the developed networking components effectively fills the gap for application developers between mobile appliances and various kinds of ubiquitous information services.