本文選題：彈性光網(wǎng)絡(luò) + 建網(wǎng)成本�。� 參考：《南京郵電大學(xué)》2017年碩士論文

【摘要】：近年來,隨著光網(wǎng)絡(luò)的研究與發(fā)展,越來越多的人們開始追求質(zhì)量更高、速度更快、性能更好的網(wǎng)絡(luò)環(huán)境,而這也驅(qū)使著高容量和高性價比的光纖傳輸技術(shù)的產(chǎn)生。彈性光網(wǎng)絡(luò)是一種支持頻譜靈活應(yīng)用的新型光網(wǎng)絡(luò),它將光譜劃分成25GHz,12.5GHz甚至6.25GHz的頻隙,并通過頻隙的有效組織,以有效提高光纖傳輸不同業(yè)務(wù)時的帶寬資源利用率,從而降低網(wǎng)絡(luò)的建設(shè)和運(yùn)營成本。本文針對承載IP業(yè)務(wù)的彈性光網(wǎng)絡(luò),建立了成本優(yōu)化模型,提出了兩種路徑分割方案:自適應(yīng)路徑分割和啟發(fā)式路徑分割,并研究采用這兩種方案來承載業(yè)務(wù)時的彈性光網(wǎng)絡(luò)建設(shè)成本。自適應(yīng)路徑分割窮舉所有中間節(jié)點(diǎn)來選擇路徑分割點(diǎn),而啟發(fā)式路徑分割設(shè)定合適的分割距離來進(jìn)行路徑分割。通過仿真并與無路徑分割情況對比分析,發(fā)現(xiàn):對于中高速業(yè)務(wù)需求,網(wǎng)絡(luò)各節(jié)點(diǎn)處業(yè)務(wù)需求增多,路徑分割方案通過合理配置具有疏導(dǎo)功能的IP路由器,可以對業(yè)務(wù)進(jìn)行有效疏導(dǎo),從而降低網(wǎng)絡(luò)的總支出成本。同時本文對基于自適應(yīng)和基于啟發(fā)式路徑分割方案進(jìn)行了普適性設(shè)計(jì),提出了多重路徑分割技術(shù)。設(shè)計(jì)了基于多重自適應(yīng)路徑分割傳輸方案和基于λ-HMA路徑分割傳輸方案,研究了兩種方案在承載信息的彈性光網(wǎng)絡(luò)建設(shè)上對成本的優(yōu)化情況。通過仿真分析,得出不同方案各自的最佳使用情況。
[Abstract]:In recent years, with the research and development of optical networks, more and more people begin to pursue a higher quality, faster, better performance network environment, which also drives the emergence of high capacity and high cost-effective optical fiber transmission technology. Elastic optical network (EON) is a new type of optical network which supports the flexible application of spectrum. It divides the spectrum into 25 GHz or 12.5 GHz or even 6.25GHz frequency slots, and through the efficient organization of frequency slots, it can effectively improve the bandwidth utilization efficiency of optical fiber when transmitting different services. In order to reduce the network construction and operation costs. In this paper, a cost optimization model is established for elastic optical networks carrying IP services, and two path segmentation schemes are proposed: adaptive path segmentation and heuristic path segmentation. The construction cost of elastic optical network is studied when the two schemes are used to carry the service. Adaptive path segmentation enumerates all the intermediate nodes to select path segmentation points, while heuristic path segmentation sets the appropriate segmentation distance for path segmentation. Through simulation and comparative analysis with no path segmentation, it is found that the demand for service at each node of the network increases for the demand of medium and high speed services, and the path segmentation scheme can reasonably configure IP routers with grooming function. Business can be effectively groomed, thus reducing the total cost of network expenditure. At the same time, the adaptive and heuristic path segmentation schemes are designed in this paper, and the multi-path segmentation technology is proposed. The transmission schemes based on multiplex adaptive path division and 位 -HMA path division are designed, and the cost optimization of the two schemes in the construction of elastic optical network carrying information is studied. Through simulation and analysis, the best use of different schemes is obtained.
【學(xué)位授予單位】：南京郵電大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TN929.1

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相關(guān)期刊論文 前1條

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本文編號：1955783