MIPv6安全体系构架

随着接入Internet移动用户的增加,MIPv4已经不能满足移动用户数量的快速增长。因此引入了MIPv6,MIPv6很好地解决了MIPv4存在的地址不足问题,但也带来了不安全因素。文章主要讲述了MIPv6中的安全隐患,介绍了相关协议及IP层协议安全结构(IPSec),并深入分析了新的安全隐患,以及采用的相应的安全措施。     

NGN中基于MPLS实现MIPv6

介绍了多协议标记交换(MPLS)和移动IP技术的基本原理,分析了在NGN中将MIP与MPLS相结合的必要性,给出了MPLS机制下的移动IP工作原理,分析了MIPoMPLS的技术优势并对其应用前景进行了阐述。     

基于MIPv6的移动网络关键技术研究

对基于MIPv6的移动网络的自身特征以及所处无线网络环境进行了分析;根据对服务质量保证的要求及多种接入网并存的嵌套移动网络路径选择问题,建立了一种基于多家乡技术的移动网络系统,并对多家乡技术的性能进行了验证。     

SIP和MIPv6的集成在IMS系统中的应用

MIPv6在IP网络层支持移动性,而SIP一直支持VoIP的应用,是IP多媒体子系统（IMS）的信令协议。为了无缝支持在移动领域中的实时多媒体通信,SIP和MIP的集成显得非常重要。本文通过MIPv6、SIP及SIP和MIPv6的集成,显示出SIP和MIPv6的集成对IMS系统性能的优化,说明了该方案可提供有效的路由,并且可减少切换时延。     

用于WLAN的低时延混合MIPv6切换机制

由于传统的WLAN切换时延较大。因此不适用于时延敏感业务。借鉴IETF提高切换速度的两种协议——FMIPv6、HMIPv6，提出一种提高切换速度的混合MIPv6机制。混合MIPv6机制采用分层管理，在二层进行切换之前提前配置地址，避免了三层切换需要的切换时延，减小了发送绑定更新消息的数量和距离，从而大大提高了WLAN的切换速度，为WLAN增值业务的发展提供了条件。     

基于MIPv4的AAA在WLAN与WCDMA融合中的实现

未来,无线通信系统终将并存多种无线接入技术.本文介绍基于MIPv4机制的AAA框架理论在多种混合无线接入系统中的实现,该框架基于MobileIPv4,不限于特定的AAA协议,本文最后描述了WCDMA和WLAN融合中AAA的实现机制.     

4G系统中支持异构接入网络选择的SIP/MIPv6信令

文章提出了一种基于SIP/MIPv6协议扩展的支持异构接入网络选择的信令机制,通过对相关信令消息进行扩展,并对部分协议流程及功能实体的处理流程进行改进,提供了对接入网络选择过程的信令支持。     

基于域的MIPv6的SSM源移动的解决方案

SSM模型的提出较好的解决了传统组播模型ASM中存在的访问控制,地址管理,复杂性等一系列问题,但是它同样存在着由于组播源的移动所带来的延时和数据包的丢失问题,本文针对这一问题提出了基于域的MIPv6的SSM解决方案,从一定程度上解决了源移动带来的这些问题。     

基于MIPv6的异质无线网络的无缝切换策略

由于无线网络技术的多样性，用户在采用不同接入或存取技术的无线网络间的无缝切换是一个非常重要的课题，本提出一种新的基于MIPv6的WLAN与GPRS网络融合方案和在这种结构下的无缝切换机制。     

基于QoS的Mobile IPv6切换方案的研究

在利用移动IPv6协议进行节点的移动性管理过程中,切换问题是影响管理性能的最关键因素之一。文章首先分析了切换问题的产生原因,接着给出了主要解决思路,最后提出了一种基于QoS的切换方案,并对其作了进一步的思考。     

移动IPv6环境中集成RSVP信令机制

本文针对在移动无线IP网络中运行RSVP信令协议存在的问题，提出了一种把RSVP信令集成于Ipv6数据包头扩展字段的方案，以减少切换过程中资源预留路径建立的时间，为移动节点提供了服务质量保障。并将此方案和原始RSVP方案在资源预留时间和信令负荷方面进行了性能比较。     

无线网络中移动IPv6的TCP性能的研究

用NS-2网络仿真软件给出了MIPv6的TCP性能分析。通过仿真实验检测了MIN从一个基站移动到另一个基站发生切换时，节点的切换处理对TCP性能的影响。实验结果表明节点的处理时间应该被考虑在仿真的参数设置中。     

基于AAA的移动IPv6运营架构研究

IPv6网络的发展现状迫切需要一个完整的运营架构来合理分配与管理网络资源。本文提出了一个采用全局惟一的IPv6地址作为身份标志的AAA运营架构,在运营商现有业务平稳过渡的基础上实现融合。该运营模式灵活、兼容性强,对用户透明,可为用户提供实时在线服务,使运营商获得海量日志信息,实现运营商的服务网络的可控、易管。     

基于移动IPv6的AAA接入认证的应用研究

论文首先对AAA架构及其移动IPv6应用扩展进行阐述,给出基于移动IPv6的AAA解决方案,在此基础上对AAA实体间的消息进行了优化,并根据需要对接入路由器进行了AAA功能的扩展,从而实现了对移动节点的访问控制,并且减少了移动节点的切换延迟。     

接入网IPv6地址的规划与分配方法

讨论了接入网中IPv6地址的规划原则,以及SLAAC,DHCP和PPP3种IPv6地址的分配方法及其优缺点。     

A Proxy MIPv6 Handover Scheme for Vehicular Ad-hoc Networks

With the rapid growth in the number of mobile devices, such as cellular phones, PDAs and laptops, the need for seamless and ubiquitous Internet connectivity is tangible. Vehicular ad-hoc network (VANET) is a rapidly developing technology, which makes vehicle-to-vehicle and vehicle-to-infrastructure communication feasible. However, when a vehicle travels from one point of attachment to another, handoff delays and provision of seamless connectivity are considered as important issues. Ubiquitous and integrated Internet connectivity can be achieved if on road moving vehicles are connected. However, when vehicle density is small and/or vehicle velocities are different, end users may suffer from a high level of connection failure. IP mobility protocols are designed by Internet Engineering Task Force to provide acceptable levels of continuous Internet connectivity, maintaining mobile node communications as they travel amongst points of attachments. However, the current IP mobility approaches applied on VANET did not resolve the connection failure issues efficiently. Therefore, in this paper a new effective solution is proposed in order to eliminate the large amount of handover latency and eventually high packet loss ratio.     

Resource allocation algorithm with cross-layer design for DiffServ-based OFDM systems

According to the quality of service (QoS) requirements of differentiated service (DiffServ), a cross-layer resource allocation algorithm for multi-user orthogonal frequency division multiplexing(OFDM)systems is presented. The constant rate is maintained by adjusting the power dynamically for the voice traffics with high priority, whereas the fairness amongst the data traffics is guaranteed by weighted fairness queued (WFQ) algorithm. The two above-mentioned strategies are used for video traffics to realize variable data rate with the constraint of the minimum rate. Combing all these methods, both the throughput and the fairness are ensured when there are multiple users in the OFDM system. Simulation results indicate the validity of the proposed algorithm, which can work well even if the SNR is less than 0 dB.     

Analysis of Fast Handover Mechanisms for Hierarchical Mobile IPv6 Network Mobility

When a mobile network dynamically changes its point of attachment to the Internet, the various types of movements by a mobile router require handovers, and network mobility (NEMO) is concerned with the management of this movement of mobile networks. Accordingly, this paper investigates the mobile router movement patterns in NEMO network environments, and defines fast hierarchical NEMO handover scenarios based on classified movement patterns. Due to unexpected link breakdowns during the handover procedure, the NEMO handover requires additional latency and packet delivery costs depending on when the breaks occur. For the various handover failure cases, it is also essential to analyze these overhead costs to evaluate and compare the performance of a fast handover. In this paper, the overheads associated with a NEMO fast handover include the latency, buffering cost, and packet loss cost, all of which are formulated based on a timing diagram.