Internet的移动接入

为了满足移动式计算机用户对Ｉｎｔｅｒｎｅｔ移动接入需求的急剧增长,Ｉｎｔｅｒｎｅｔ工程任务组设计了移动ＩＰ。本文介绍了移动ＩＰ协议的基本特点、工作原理、路由优化及安全性,并对移动ＩＰｖ６和基于ＡＴＭ的移动ＩＰ作了简单的分析。     

从固定互联网到移动互联网

介绍互联网的体系架构及所面临的移动性支持等挑战,阐述了为应对移动性的挑战,互联网目前所做的一些工作,最后介绍了移动互联网对互联网架构和应用的影响。     

移动互联网对传统互联网的影响探析

移动互联网作为新兴产业,正在展开以"终端+服务"为核心的发展与创新过程。文章在总结移动互联网和传统互联网特点基础上,重点从冲击与融合两个方面分析探讨了移动互联网对传统互联网的影响。     

专题：移动互联网的发展趋势和技术方向——移动互联网中的若干问题研究

对移动互联网的商业模型、移动互联网所使用的两种网络（移动网和无线局域网）的网络特性、移动智能终端、移动网的网络特性和资源管理、移动互联网中的IP地址和寻址等5个问题进行讨论,指出其存在的问题和可能的解决方法,认为这些深层次问题的解决,可使核心技术获得突破性进展.     

移动互联网

推荐理由：移动互联网被摩根斯坦利认为是继大型机、小型机、个人电脑、桌面互联网之后第五个信息产业的发展周期,是当今信息产业竞争最为激烈、发展最为迅速的领域,移动互联网带来的跨界融合甚至改变了信息通信产业的发展模式——移动互联网已经完全改变了移动智能终端制造领域,又在深刻改变电信业的游戏规则。     

移动互联网

推荐理由:手机终端的个性化以及移动网络的交互性,让移动互联网从诞生之日起便拥有了强大生命力,而中国3.5的手机用户.更成为这个市场的坚强后盾.     

走向移动互联

整合移动互联网技术移动通信和互联网的迅猛发展 ,推动了消费者对随时随地接入互联网进行信息传递的需求。通信业、ＩＴ业和媒体的共同作用孕育了这种快速发展的商业环境 ,而体系结构成为提供这种连接的关键。１ 全球计划的倡导者诺基亚已经制定了全球计划 ,为移动互联网开发综合技术体系结构。此计划的名称为“诺基亚移动互联网技术体系结构” ,旨在所有交互模式、网络环境和各类接入方式之间提供无缝互操作性。最终的目标是为所有人提供友好的移动互联网应用。要实现这个目标 ,必须确定相关的通信模式 ,确定支持它们所需的关键技术并推动…     

移动互联网

移动互联网是当前信息技术研究的一人重点,其关键在于实现便携设备通过无线通信信道接入因特网并获取和显示有效信息,需要涉及到TCP/IP协议（传输控制协议/网间协议）的网络接口层和应用层。文中密切跟踪业界动态,依照TCP/IP协议的参考模型,重点介绍了HSCSD（高速电路交换数据）、GPRS（通用分组无线服务）,蓝牙、IMT-2000年国际移动通信）和WAP（无线应用协议）等技术,详细讨论了各自的实现方法和特点,最后,从技术和市场两个角度分析了移动互联网的现状以及未来走向,并指出了移动互联网所面临的主要问题,探讨了相应的解决方法。     

Introduction to Mobile Internet Technical Architecture

Nokia has taken a global initiative to develop a comprehensive technical architecture for the Mobile Internet. The initiative, Nokia Mobile Internet Technical Architecture, aims to provide seamless interoperability between all interaction modes, any network environment and with any type of access. The ultimate objective of the initiative is to create a user-friendly Mobile Internet experience for everyone. This will be done by identifying the relevant communication modes, by defining the key technologies required to support them and by driving industry participation to develop a common wireless Internet platform.In developing a comprehensive technical architecture for the Mobile Internet, Nokia aims to limit the complexity of the inherently technical environment; users do not want to worry about the underlying technologies. Nokia sees three key elements as fundamental to the Mobile Internet Technical Architecture: identity, interaction modes and network environments. Bringing these together and managing the challenges they pose is at the core of this initiative and will ensure high-quality and seamless interoperability in end-to-end services.Open solution benefits all; profitable business scenarios call for interoperability, short development cycles, large volumes and most of all global reach. Unless there is a commonly accepted architectural solution, the markets will be fragmented as well as requiring separate parameters, and where the total volume is much smaller than in a single global market.     

Integrating Mobile Ad Hoc Network to the Internet

A novel scheme is presented to integrate mobile ad hoc networks （MANETs） with the lnternet and support mobility across wireless local area networks （WLANs） and MANETs. The mobile nodes, connected as a MANET, employ the optimize d link state routing （OLSR） protocol for routing within the MANET. Mobility management across WLANs and MANETs is achieved through the hierarchical mobile IPv6 （HMIPv6） protocol. The performance is evaluated on a HMIPv6 based test-bed composed of WLANs and MANETs. The efficiency gain obtained from using HMIPv6 in such a hybrid network is investigated. The investigation result shows that the use of HMIPv6 can achieve up to 27% gain on reducing the handoff latency when a mobile roams within a domain. Concerning the reduction of the signaling load on the lnternet, the use of HMIPv6 can achieve at least a 54% gain and converges to 69%.     

基于移动IP构造移动互联网

随着网络应用的普及和社会信息化程度的提高,人们对于移动互联的需求越来越旺盛.作为移动互联的基石,移动IP也因而得到了广泛的关注和重视.     

Internet网络接入服务器的应用

随着Internet的爆炸式发展，提供远程用户访问Internet的网络接入服务器（NAS）成为当前热点所在。接入服务器位于公共电话网PSTN或综合业务数字网ISDN与Internet之间，为远程用户提供Internet接入能力。本文介绍的接入服务器为用户提供了更多的业务功能，如中继合群、多链路捆绑、VPDN（拨号虚拟专用网）等，并且基于当前电信网现状，结合设备特点为电信运营商、ISP等提供了优选的设备组网方案。     

通过卫星使用非平衡电路引入Internet

Ｉｎｔｅｒｎｅｔ对收发的速率要求不同，收速率往往大于发速率，因此原有的平衡电路对电路资源造成很大浪费。本文介绍了通过卫星使用非平衡电路引入高速Ｉｎｔｅｒｎｅｔ的一种方法。     

Dynamic parallel access to replicated content in the Internet

Popular content is frequently replicated in multiple servers or caches in the Internet to offload origin servers and improve end-user experience. However, choosing the best server is a nontrivial task and a bad choice may provide poor end user experience. In contrast to retrieving a file from a single server, we propose a parallel-access scheme where end users access multiple servers at the same time, fetching different portions of that file from different servers and reassembling them locally. The amount of data retrieved from a particular server depends on the resources available at that server or along the path from the user to the server. Faster servers deliver bigger portions of a file while slower servers deliver smaller portions. If the available resources at a server or along the path change during the download of a file, a dynamic parallel access automatically shifts the load from congested locations to less loaded parts (server and links) of the Internet. The end result is that users experience significant speedups and very consistent response times. Moreover, there is no need for complicated server selection algorithms and load is dynamically shared among all servers. The dynamic parallel-access scheme presented does not require any modifications to servers or content and can be easily included in browsers, peer-to-peer applications or content distribution networks to speed up delivery of popular content.     

基于GPRS的移动互联网

本首先介绍了GPRS的基本组成与网络结构,然后在此基础上着重论述了基于GPRS而实现的移动互联网以及GPRS对QoS的保证,最后探讨一些GPRS的具体应用领域。     

谈移动互联网时代的手机信息安全

以互联网为核心的网络空间已成为继陆、海、空、天之后的第五大战略空间。移动互联网时代下,传统的信息安全问题已从PC端延伸至手机终端。手机信息安全问题已发展成为云、管、端的三维信息安全问题。本文通过阐述移动互联网时代手机信息安全的基础概念、存在问题和价值,深入探讨电信运营商在新安全形势下的可走之路,最后对海南移动的手机信息安全发展之路给出应对思路和建议。     

Mobile networking in the Internet

Computers capable of attaching to the Internet from many places are likely to grow in popularity until they dominate the population of the Internet. Consequently, protocol research has shifted into high gear to develop appropriate network protocols for supporting mobility. This introductory article attempts to outline some of the many promising and interesting research directions. The papers in this special issue indicate the diversity of viewpoints within the research community, and it is part of the purpose of this introduction to frame their place within the overall research area. This revised version was published online in June 2006 with corrections to the Cover Date.     

迎接移动互联网第二浪潮的到来

本文介绍了移动互联网的基本内涵,阐述了即将到来的移动互联网第二浪潮的主要推动力,并结合实际,分析了移动互联网发展的前景。     

基于TD-LTE的移动互联网研究

本文首先讨论了TD-LTE的主要技术特点及其发展情况,接着介绍了我国移动互联网产业的现状与发展趋势,并分析了TD-LTE与移动互联网关系,并着重指出了TD-LTE高带宽、低时延等特性对移动互联网的重要意义。     

下一代移动网络中非连续接收机制对移动互联网业务性能影响分析

移动互联网业务的发展引发了大量需要终端与网络间进行频繁交互的业务,产生了终端能量和无线信令资源消耗过度的问题。结合3GPP标准定义的下一代移动网络非连续接收(discontinuous reception,DRX)机制,从终端能耗、数据包延时、空口资源开销等角度出发,分析了DRX机制对典型移动互联网业务的网络性能影响,并对DRX机制的参数配置提出了优化建议。