發(fā)布時(shí)間：2018-06-24 06:25

  本文選題：LISP + 乒乓切換�。� 參考：《曲阜師范大學(xué)》2014年碩士論文

【摘要】：隨著移動(dòng)互聯(lián)網(wǎng)的快速發(fā)展，智能移動(dòng)設(shè)備的激增，人們對網(wǎng)絡(luò)的移動(dòng)性要求越來越高。在當(dāng)前的互聯(lián)網(wǎng)體系結(jié)構(gòu)中，IP地址既代表用戶的身份標(biāo)識，又代表了用來路由的位置標(biāo)識，承載了雙重的語義信息。IP地址的語義過載所帶來的路由過載問題制約著移動(dòng)IP相關(guān)性能的提升，因此身份與位置標(biāo)識分離成為當(dāng)前移動(dòng)互聯(lián)網(wǎng)技術(shù)研究的熱點(diǎn)之一，本文對基于LISP的移動(dòng)性管理機(jī)制進(jìn)行優(yōu)化，減少乒乓切換的延遲和丟包率，提高切換的性能。 本文針對基于LISP的移動(dòng)性管理機(jī)制進(jìn)行研究，首先介紹了移動(dòng)IPv6的工作原理、標(biāo)準(zhǔn)切換、快速切換和層次型移動(dòng)IPv6切換方案。詳細(xì)分析了現(xiàn)有的位置標(biāo)識與身份標(biāo)識分離協(xié)議(Locator/ID Separation Protocol，LISP)，針對移動(dòng)節(jié)點(diǎn)乒乓切換過程中的切換時(shí)延、丟包率、吞吐量等方面，設(shè)計(jì)了基于LISP的乒乓切換改進(jìn)與優(yōu)化方案，主要研究工作如下。 (1)在LISP協(xié)議的框架基礎(chǔ)上，提出了一種針對乒乓效應(yīng)的快速切換方案�，F(xiàn)有的基于LISP協(xié)議的移動(dòng)性管理機(jī)制中，請求了新的映射信息后會(huì)刪除舊的映射信息。對于乒乓移動(dòng)來說，節(jié)點(diǎn)再次移回到原有網(wǎng)絡(luò)后，又需要重新注冊映射信息，這必然會(huì)導(dǎo)致大量的信令開銷，同時(shí)降低了切換效率。針對這一問題，提出了一種基于LISP協(xié)議的快速切換方法，改進(jìn)方法增加了映射狀態(tài)表，用來保存乒乓切換過程中的新舊映射信息。通過優(yōu)化乒乓切換過程中的映射機(jī)制來實(shí)現(xiàn)移動(dòng)節(jié)點(diǎn)的快速無縫切換，縮短了切換時(shí)延，提高了吞吐量和數(shù)據(jù)通信效率。 (2)對改進(jìn)方案的實(shí)驗(yàn)驗(yàn)證。通過仿真實(shí)現(xiàn)改進(jìn)方案的切換過程，追蹤切換過程中的實(shí)驗(yàn)數(shù)據(jù)，，通過對比分析，驗(yàn)證了改進(jìn)方案在切換延遲以及吞吐量方面可以提供更好的移動(dòng)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.
【學(xué)位授予單位】：曲阜師范大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TP393.04

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本文編號：2060406