移动互联网切换技术的研究

发布时间：2018-06-24 06:25

本文选题：LISP + 乒乓切换　；参考：《曲阜师范大学》2014年硕士论文

【摘要】：随着移动互联网的快速发展，智能移动设备的激增，人们对网络的移动性要求越来越高。在当前的互联网体系结构中，IP地址既代表用户的身份标识，又代表了用来路由的位置标识，承载了双重的语义信息。IP地址的语义过载所带来的路由过载问题制约着移动IP相关性能的提升，因此身份与位置标识分离成为当前移动互联网技术研究的热点之一，本文对基于LISP的移动性管理机制进行优化，减少乒乓切换的延迟和丢包率，提高切换的性能。本文针对基于LISP的移动性管理机制进行研究，首先介绍了移动IPv6的工作原理、标准切换、快速切换和层次型移动IPv6切换方案。详细分析了现有的位置标识与身份标识分离协议(Locator/ID Separation Protocol，LISP)，针对移动节点乒乓切换过程中的切换时延、丢包率、吞吐量等方面，设计了基于LISP的乒乓切换改进与优化方案，主要研究工作如下。 (1)在LISP协议的框架基础上，提出了一种针对乒乓效应的快速切换方案。现有的基于LISP协议的移动性管理机制中，请求了新的映射信息后会删除旧的映射信息。对于乒乓移动来说，节点再次移回到原有网络后，又需要重新注册映射信息，这必然会导致大量的信令开销，同时降低了切换效率。针对这一问题，提出了一种基于LISP协议的快速切换方法，改进方法增加了映射状态表，用来保存乒乓切换过程中的新旧映射信息。通过优化乒乓切换过程中的映射机制来实现移动节点的快速无缝切换，缩短了切换时延，提高了吞吐量和数据通信效率。 (2)对改进方案的实验验证。通过仿真实现改进方案的切换过程，追踪切换过程中的实验数据，，通过对比分析，验证了改进方案在切换延迟以及吞吐量方面可以提供更好的移动性支持。
[Abstract]:With the rapid development of the mobile Internet and the proliferation of intelligent mobile devices, people demand higher mobility of the network. In the current Internet architecture, IP addresses represent both the identity of the user and the location identification used for routing. The routing overload caused by the semantic overload of the double semantic information .IP address restricts the improvement of the performance of mobile IP. Therefore, the separation of identity and location identification has become one of the hotspots in the research of mobile Internet technology. In this paper, the mobility management mechanism based on lisp is optimized to reduce the latency and packet loss rate of ping-pong handoff and improve the performance of handoff. In this paper, the mobility management mechanism based on lisp is studied. Firstly, the working principle, standard handover, fast handoff and hierarchical IPv6 handover scheme of mobile IPv6 are introduced. The existing Locator / ID Separation Protocol (lisp) is analyzed in detail. Aiming at the handoff delay, packet loss rate, throughput and so on, the improvement and optimization scheme of ping-pong handoff based on lisp is designed. The main research work is as follows. (1) based on the framework of lisp, a fast switching scheme for ping-pong effect is proposed. In the existing mobility management mechanism based on lisp, the old mapping information is deleted after the new mapping information is requested. For Ping-Pong Mobile, once the node is moved back to the original network, it is necessary to re-register the mapping information, which will inevitably lead to a large amount of signaling overhead and reduce the efficiency of handover. In order to solve this problem, a fast switching method based on lisp protocol is proposed. The improved method adds the mapping status table to save the old and new mapping information in the process of ping-pong switching. By optimizing the mapping mechanism in the Ping-Pong handover process, the mobile nodes can be quickly and seamlessly switched, the handoff delay is shortened, and the throughput and data communication efficiency are improved. (2) Experimental verification of the improved scheme. Simulation results show that the improved scheme can provide better mobility support in handoff delay and throughput.
【学位授予单位】：曲阜师范大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP393.04

【参考文献】