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针对移动IP注册协议中家乡和移动节点过多且复杂的计算问题,提出了一个新的基于身份的密钥分发方案,并在此基础上设计了一种高效的移动IP注册协议。该协议实现了移动IP各个节点间相互认证,其中移动节点与家乡代理之间具有双重认证的特点。双线性对和秘密随机数的选取保证了消息的安全性,消息认证码Mac和数字签名Sig保障了消息的完整性。该协议从整体上减少了计算量,降低了注册延迟率,同时也有效地保证了安全性。安全性分析表明,该方案满足移动IP的安全要求。 相似文献
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大型CDMA网络中移动IP技术应用和部署策略研究 总被引:1,自引:0,他引:1
近年来随着互联网和移动通信的高速发展,人们对移动业务如语音、视频、互联网访问、游戏、定位等提出了更高的要求.在新的市场竞争环境、新业务发展和新技术促进下,运营商将高带宽移动接入和基于互联网的服务结合起来.在提高无线频率利用效率的同时,为用户提供更经济、内容更丰富的无线数据业务和移动增值业务.本文对CDMA分组域组网的网络参考模型进行研究.提出了部署移动IP的策略. 相似文献
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XU Kai JI Hong YUE Guang-xin Telecommunication Engineering School Beijing University of Posts Telecommunications Beijing P.R. China 《中国邮电高校学报(英文版)》2004,11(Z1)
1 Introduction MobileIPv6requirestheMobileNode (MN)toregisterwiththeHomeAgent (HA)andtheCorre spondentNode (CN)whenitchangesitspointofattachmentintheInternet[1~ 3] .Therefore ,thiscauseMobileIPv6toincurlongdelayintheregis tration process,andaddsignalingtraffictothebackbonenetworkespeciallywhentheHAandCNarefarawayfromtheMN .Inordertominimizethisdelay ,andthesignalingoverhead presentinMobileIPv6,literatures[4~7] proposeHierarchicalMobileIPv6(HMIPv6)architectureandafasthan dover… 相似文献
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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。 相似文献
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移动IPv6是IPv6的子协议,有着巨大的地址空间、对移动性和QoS的良好支持,内嵌的IPSec协议,以及邻居发现和自动配置等诸多优势,它为未来的全IP移动通信系统提供了一个标准的全球移动性解决方案。针对移动IPv6技术的特点,将IPSec安全协议和无证书公钥体系(CL-PKC)两者结合起来,在分析无证书公钥的优缺点的基础上,提出了一种在移动IPv6环境下的注册协议认证与注册方案,并对该协议的性能进行了分析,以方便日后的改进。 相似文献
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本文针对SNMP网管所存在的问题,基于移动agent技术构建了一个与平台无关的运行环境,利用SNMP移动管理者和代理群实现动态的软件部署模式和多样的网管方式,使SNMP网管适应不同类型的被管设备和不同层次的管理需求,既兼顾已有系统,又提高网管性能.实验表明,移动agent技术能够为SNMP网管带来快速、灵活和高效的管理过程. 相似文献
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目前,移动IP技术的使用越来越普遍,安全性也显得越来越重要。介绍了移动IP和IPSec,讨论了如何实现移动IP和IPSec的集成使得可以为移动IP提供有效的安全服务,给出了移动节点移动到专网(企业网)之外后整个协议套的运行实例,并描述了2种密钥管理协议(SKIP和ISAKMP/Oakley)的作用过程。 相似文献
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介绍了一种采用移动代理的无线传感器(WSN)网络,该网络系统由移动代理节点负责复杂数据处理、接入处理、数据转发传输、路由维护等工作,与一般WSN网络相比具有节能优势。该网络系统MAC层采用S-ALOHA协议,不仅网络吞吐量低而且能耗大,依据网络结构特点提出了采用基于信噪比(SNR)的信道Sift协议。仿真验证该协议大大提高了网络吞吐量和降低了网络系统能耗。 相似文献
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随着移动IP的发展和应用,最初的移动IPv4已经暴露出先天不足。由于移动IPv4的缺陷(如三角路由问题),移动IPv6的设计借鉴了开发移动IPv4的经验,并且利用了IPv6提供的新特性。移动IPv6正在成为IP不可缺少的部分,而且比移动IPv4有很多显著的改进。通过对其工作原理和基于移动IPv4存在的问题进行了分析,比较了移动IPv6和移动IPv4的差异,介绍了移动IPv6的主要工作过程。移动IPv6的真正推广,一方面需要借助下一代网络的快速发展需求,另一方面也需要克服目前存在的一些问题。 相似文献
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Performance Analysis of Location-Aware Mobile Service Proxies for Reducing Network Cost in Personal Communication Systems 总被引:1,自引:0,他引:1
We propose and analyze mobile service management schemes based on location-aware proxies with the objective to reduce the network signaling and communication cost in future personal communication systems (PCS). Under these schemes, a mobile user uses personal proxies as intelligent client-side agents to communication with services engaged by the mobile user. A personal proxy cooperates with the underlying location management system so that it is location-aware and can optimally decide when and how often it should move with the roaming user. We show that, when given a set of model parameters characterizing the network and workload conditions, there exists an optimal proxy service area size for service handoffs such that the overall network signaling and communication cost for servicing location and service operations is minimized. We demonstrate via Petri net models that our proposed proxy-based mobile service management schemes outperform non-proxy-based schemes over a wide range of identified conditions. Further, when the mobile user is concurrently engaged in multiple services, the per-service proxy scheme that uses a separate proxy for each service outperforms the aggregate proxy scheme that uses a single proxy to interface with multiple services taking their aggregate service characteristics into consideration.
Baoshan Gu received the BS degree from University of Science and Technology of China, Hefei, China, in 1992 and the MS degree in computer science from Institute of Computing Technology, Chinese Academia of Science, Beijing, China, in 1995. From 1995 to 2000, he was a research and development engineer in Institute of Computing Technology, Chinese Academia of Science. He is currently pursuing his PhD degree in the Department of Computer Science, Virginia Tech, where he is a research assistant in the Systems and Software Engineering Laboratory. His research interests include next-generation wireless system architectures, design and evaluation of location and service management schemes in mobile computing environments, and mobile database systems.
Ing-Ray Chen received the BS degree from the National Taiwan University, Taipei, Taiwan, and the MS and PhD degrees in computer science from the University of Houston, Texas. He is currently an associate professor in the Department of Computer Science at Virginia Tech. His research interests include mobile computing, pervasive computing, multimedia, distributed systems, real-time intelligent systems, and reliability and performance analysis. Dr. Chen has served on the program committee of numerous conferences, including being as program chair of 14th IEEE International Conference on Tools with Artificial Intelligence in 2002, and 3rd IEEE Symposium on Application-Specific Systems and Software Engineering Technology in 2000. Dr. Chen currently serves as an Associate Editor for IEEE Transactions on Knowledge and Data Engineering, The Computer Journal, and International Journal on Artificial Intelligence Tools. He is a member of the IEEE/CS and ACM.This revised version was published online in August 2005 with a corrected cover date. 相似文献
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移动互联网安全问题分析 总被引:1,自引:0,他引:1
随着我国移动互联网进入快速增长时期,移动互联网的安全问题已经成为影响其发展的重要因素之一。目前在接入安全保障上主要采用双向认证鉴权、在无线空口采用加强型加密机制以及针对WiFi接入用AES算法替代RC4,在承载网上主要部署异常流量监控和清洗技术,以及采用网络溯源技术等来解决安全问题。 相似文献