本文選題：光網(wǎng)絡(luò)生存性 + 波長(zhǎng)轉(zhuǎn)換�。� 參考：《南京郵電大學(xué)》2017年碩士論文

【摘要】：隨著光纖通信技術(shù)的迅速成熟,光網(wǎng)絡(luò)可以給用戶提供快速、優(yōu)質(zhì)的服務(wù)。隨著用戶數(shù)量以及總業(yè)務(wù)量越來(lái)越多,故障發(fā)生數(shù)量也大幅提升,即使很短的一段時(shí)間內(nèi)的業(yè)務(wù)服務(wù)中斷,可能會(huì)帶來(lái)災(zāi)難性的后果。因此,如何提高光網(wǎng)絡(luò)應(yīng)對(duì)故障的能力,使服務(wù)的損失減少到最小,使得生存性的研究成為光網(wǎng)絡(luò)發(fā)展中一項(xiàng)至關(guān)重要的研究?jī)?nèi)容。本文對(duì)鏈路保護(hù)、節(jié)點(diǎn)保護(hù)等關(guān)鍵技術(shù)展開(kāi)分析,給出選取拓?fù)浣Y(jié)構(gòu)中保護(hù)優(yōu)先級(jí)最高的鏈路和節(jié)點(diǎn)的理論基礎(chǔ),為系統(tǒng)仿真提供理論依據(jù);基于鏈路刪除法,選取拓?fù)浣Y(jié)構(gòu)中優(yōu)先級(jí)最高的鏈路,通過(guò)分析1+1保護(hù)和共享保護(hù)兩種保護(hù),結(jié)合兩種保護(hù)的特點(diǎn),在Mesh網(wǎng)中設(shè)計(jì)交叉型保護(hù)方案;基于集團(tuán)度算法,判斷拓?fù)浣Y(jié)構(gòu)中不同節(jié)點(diǎn)的保護(hù)優(yōu)先級(jí),根據(jù)保護(hù)優(yōu)先級(jí)確定保護(hù)方案,討論在不同數(shù)量的節(jié)點(diǎn)具備波長(zhǎng)轉(zhuǎn)換功能時(shí)光網(wǎng)絡(luò)系統(tǒng)生存性性能發(fā)生的變化。利用OPNET Modeler軟件構(gòu)建網(wǎng)絡(luò)拓?fù)浣Y(jié)構(gòu),通過(guò)仿真研究交叉保護(hù)對(duì)生存性參數(shù)的改善情況,并研究不同的節(jié)點(diǎn)具備波長(zhǎng)轉(zhuǎn)換能力時(shí)對(duì)光網(wǎng)絡(luò)阻塞率的影響。仿真結(jié)果表明:本文設(shè)計(jì)的基于1+1保護(hù)與共享保護(hù)的交叉保護(hù),保持了Mesh共享網(wǎng)絡(luò)的低冗余度、低阻塞率的優(yōu)點(diǎn),在保護(hù)恢復(fù)成功率以及恢復(fù)時(shí)間上較Mesh網(wǎng)有較大提升;當(dāng)光網(wǎng)絡(luò)拓?fù)浣Y(jié)構(gòu)中的保護(hù)優(yōu)先級(jí)最高節(jié)點(diǎn)具備波長(zhǎng)轉(zhuǎn)換功能時(shí),相比于全波長(zhǎng)轉(zhuǎn)換功能的網(wǎng)絡(luò)更利于實(shí)現(xiàn),對(duì)比無(wú)波長(zhǎng)轉(zhuǎn)換網(wǎng)絡(luò)在阻塞率上有明顯改善,并且保護(hù)優(yōu)先級(jí)最高的節(jié)點(diǎn)具備波長(zhǎng)轉(zhuǎn)換功能時(shí),相比優(yōu)先級(jí)較低的節(jié)點(diǎn)對(duì)于系統(tǒng)性能的提升最為明顯。
[Abstract]:With the rapid development of optical fiber communication technology, optical network can provide fast and high quality service to users. As the number of users and the total volume of business grows, the number of failures also increases dramatically, even if business services are interrupted for a short period of time, which may have disastrous consequences. Therefore, how to improve the ability of the optical network to deal with the failure, reduce the loss of service to the minimum, make the research of survivability become an important research content in the development of optical network. In this paper, the key technologies of link protection and node protection are analyzed, and the theoretical basis of selecting the link and node with the highest protection priority in topology structure is given, which provides the theoretical basis for system simulation. Selecting the link with the highest priority in the topology structure, combining the characteristics of the two kinds of protection, we design the cross protection scheme in Mesh net by analyzing the protection of 11 protection and the shared protection, which is based on the group degree algorithm. The protection priority of different nodes in topology is judged and the protection scheme is determined according to the protection priority. The changes of survivability in different number of nodes with wavelength conversion function are discussed. The network topology is constructed by using OPNET Modeler software, and the improvement of survivability parameters by cross-protection is studied by simulation, and the influence of different nodes with wavelength conversion ability on the blocking rate of optical network is studied. The simulation results show that the cross-protection based on 11 protection and shared protection in this paper keeps the advantages of low redundancy and low blocking rate of Mesh shared network, and improves the protection recovery success rate and recovery time compared with Mesh network. When the highest protection priority node in optical network topology has the function of wavelength conversion, compared with the network with full wavelength conversion function, it is more convenient to realize, and the blocking rate of no wavelength conversion network is improved obviously. When the node with the highest protection priority has wavelength conversion function, the performance of the node with lower priority is the most obvious.
【學(xué)位授予單位】：南京郵電大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TN929.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 陳朝良;高萬(wàn)榮;卞海溢;;頻域光學(xué)相干層析術(shù)系統(tǒng)中高準(zhǔn)確度高靈敏度補(bǔ)償色散法[J];光子學(xué)報(bào);2014年02期

2 吳潤(rùn)澤;胡秀園;李彬;唐良瑞;;電力ASON中基于SRLG完全分離P圈的鏈路故障保護(hù)算法[J];電力系統(tǒng)保護(hù)與控制;2013年05期

3 陳超;王大彬;徐同亞;;WDM光網(wǎng)絡(luò)雙鏈路故障混合保護(hù)算法[J];計(jì)算機(jī)應(yīng)用研究;2011年10期

4 趙太飛;李樂(lè)民;虞紅芳;;基于k-最短路由的mesh光網(wǎng)絡(luò)p圈構(gòu)造方法[J];計(jì)算機(jī)應(yīng)用研究;2007年11期

5 臧云華;鄧宇;張杰;顧畹儀;;Mesh光網(wǎng)絡(luò)基于有向P圈的保護(hù)配置策略[J];光通信研究;2007年04期

6 趙太飛;李樂(lè)民;虞紅芳;;抗毀性WDM網(wǎng)狀光網(wǎng)絡(luò)中的p圈快速構(gòu)造算法(英文)[J];光電工程;2007年04期

7 于青;葛寧;董在望;;WDM網(wǎng)絡(luò)中基于p-path和p-cycle的混合保護(hù)方案[J];清華大學(xué)學(xué)報(bào)(自然科學(xué)版);2007年01期

8 羅先會(huì);蔡祥寶;肖衛(wèi);;多波長(zhǎng)光網(wǎng)絡(luò)的動(dòng)態(tài)路由等效算法[J];光電工程;2006年01期

9 郭琳;張慧劍;張杰;顧畹儀;;用于Mesh光網(wǎng)絡(luò)快速保護(hù)恢復(fù)的GMPLS信令機(jī)制的擴(kuò)展[J];光通信技術(shù);2006年01期

10 宋鴻升,徐云斌,顧畹儀;一種新的格狀波分復(fù)用光網(wǎng)絡(luò)保護(hù)方法[J];光子學(xué)報(bào);2004年09期

相關(guān)碩士學(xué)位論文 前2條

1 胡秀園;基于P圈的Mesh光網(wǎng)絡(luò)生存性機(jī)制研究[D];華北電力大學(xué);2013年

2 唐凱;Mesh光網(wǎng)絡(luò)保護(hù)機(jī)制研究[D];華中科技大學(xué);2007年

，

本文編號(hào)：1840360