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This paper proposes a fast handover mechanism to provide a seamless multicast service for Mobile IPv6 hosts. With the proposed
Fast handover based on a Mobile IP-Multi casting (FMIP-M) protocol, the selection of a new multicast service method, service
preparation, and initialization procedures are all performed during the fast handover period, thereby enabling a reliable
and efficient multicast service. When mobile hosts move to other networks, they can encounter data loss, out-of-synch problems
for multicast data, and multicast service exchange latency. Therefore, the proposed FMIP-M allows the new access router to
select a suitable multicast service method according to the multicast service-related network conditions and supports a reliable
multicast transmission by compensating for data losses from the previous access router. An analysis is conducted of the overheads
associated with a fast multicast handover, including the signaling cost and multicast packet-forwarding cost, where the costs
are formulated based on timing diagrams, and compared with a fast handover using Mobile IPv6. The performance analysis and
numerical results confirm that the proposed FMIP-M provides a fast multicast handover and reliable service with a relatively
small signaling cost and packet-delivery cost. 相似文献
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This Letter proposes a scheme that supports a fast handover effectively in hierarchical mobile IPv6 networks (F‐HMIPv6) by optimizing the associated data and control flows during the handover. By NS‐2 simulation, we show that the proposed scheme can give better handover performance than a simple combination of existing schemes. 相似文献
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研究了移动IPv6协议中的越区切换问题,提出了一种基于特征投影的移动IPv6快速切换方法。该方法通过构造先验切换经验与小区覆盖范围的映射关系来协助移动接入网关对切换目的地进行预测。仿真结果表明,文中方法能够获得比FPMIPv6更小的切换延迟,并具有较好的鲁棒性。 相似文献
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分层移动IPv6快速切换在一定程度上减少了切换延时,但切换过程中由网络层移动检测和使用重复地址检测(DAD)配置一个新转交地址引起的延时对实时业务仍然有很大的影响。为了减轻这些影响,文中提出了一种更加有效的快速邻居发现和DAD机制,减小了切换延时,提高了网络的性能。 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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Handovers in mobile packet networks commonly produce packet loss, delay and jitter, thereby significantly degrading network
performance. Mobile IPv6 handover performance is strongly topology dependent and results in inferior service quality in wide
area scenarios. To approach seamless mobility in IPv6 networks predictive, reactive and proxy schemes have been proposed for
improvement. In this article we analyse and compare handover performance and frequencies for the corresponding protocols,
as they are an immediate measure on service quality. Using analytical methods as well as stochastic simulations, we calculate
the performance decreases originating from different handover schemes, the expected number of handovers as functions of mobility
and proxy ratios, as well as the mean correctness of predictions. In detail we treat the more delicate case of these rates
in mobile multicast communication. It is obtained that performance benefits, expected from simple analysis of predictive schemes,
do not hold in practice. Reactive and predictive handovers rather admit comparable performance. Hierarchical proxy environments—foremost
in regions of high mobility—can significantly reduce the processing of inter–network changes. Reliability of handover predictions
is found on average at about 50%. 相似文献
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改进的移动IPv6协议分析 总被引:4,自引:0,他引:4
在IPv4基础上发展起来的移动IPv6,比移动IPv4有很多优势,功能更为强大,更安全,必将在未来的移动互联领域发挥更大作用。但是当移动节点频繁移动时.标准移动IPv6协议会在网络中产生大量的注册报文,造成较大的注册延时,降低网络性能,因此有必要加以改进。本文介绍了两种改进的移动IPv6协议,并进行了详细分析。 相似文献
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移动IPv6在3G通信网络中的应用 总被引:2,自引:1,他引:2
随着社会的现代化,人们对通信网络的要求越来越高了.能提供随时随地的移动数据通信已成为人们的迫切需求.随着IPv6标准的成熟和试运行,在3G牌照即将下发之际,文章就移动IPv6在3G网络中的实现及IPv4向IPv6过渡进行了探讨. 相似文献
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本文在比较IPv6基本报头和IPv4报头的基础上,详细分析了IPv6与IPv4的区别,这对于今后建设IPv6网络以及寻求,IPv6网络的杀手锏应用方面有着极其重要的意义。 相似文献
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从IPv4向IPv6的过渡 总被引:4,自引:0,他引:4
IETF提出的从IPv4向IPv6平稳过渡的多种机制分属双栈、翻译器和隧道等三个类型。在分别介绍了三类过渡机制之后,还讨论了影响过渡的其他因素,包括用户对IPv6的需求、网络升级的成本、新型设备的提供能力以及面临的技术问题。 相似文献
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随着Internet的高速发展,IPv4地址所剩不多,由此面临着IPv4向IPv6地址的过渡。本文通过介绍IPv4/IPv6代沟协议转换器的实现原理及转换模块的设计等问题,提出网络中设置代沟协议转换器是最简单、便捷的IPv4/IPv6过渡方法。 相似文献