發(fā)布時(shí)間：2018-05-22 07:19

  本文選題：網(wǎng)絡(luò)虛擬化 + 資源分配　； 參考：《北京郵電大學(xué)》2014年碩士論文

【摘要】：網(wǎng)絡(luò)虛擬化技術(shù)是解決當(dāng)前互聯(lián)網(wǎng)問題的關(guān)鍵手段。網(wǎng)絡(luò)虛擬化技術(shù)能夠?qū)崿F(xiàn)支持多個異構(gòu)的網(wǎng)絡(luò)共享基礎(chǔ)物理設(shè)施的目標(biāo)。其中,如何分配虛擬網(wǎng)絡(luò)的資源是一個重要的課題。在網(wǎng)絡(luò)虛擬化環(huán)境下,合理的資源分配能夠?qū)崿F(xiàn)高效共享物理網(wǎng)絡(luò)資源,并且,在保障服務(wù)提供商需求的條件下,最大限度地提高資源利用率。 在虛擬網(wǎng)絡(luò)資源分配的研究中,多數(shù)資源分配算法都是假設(shè)虛擬化環(huán)境只包括單個基礎(chǔ)設(shè)施提供商(物理網(wǎng)絡(luò))和單個服務(wù)提供商(虛擬網(wǎng)絡(luò))的情況。對于在多個基礎(chǔ)設(shè)施提供商或者多個服務(wù)提供商競爭的情況下,如何達(dá)到更好的收益或收益成本比,如何提高物理資源的利用率,這方面的研究比較缺乏,有待于深入開展。 本文在對虛擬網(wǎng)絡(luò)資源分配研究成果進(jìn)行調(diào)研分析的基礎(chǔ)上,結(jié)合現(xiàn)有網(wǎng)絡(luò)資源分配相關(guān)技術(shù),深入研究了網(wǎng)絡(luò)虛擬化環(huán)境下的網(wǎng)絡(luò)資源分配的問題,并且提出了基于生態(tài)模型的資源分配算法。本文的主要貢獻(xiàn)： (1)提出和驗(yàn)證了服務(wù)提供商間對資源的競爭滿足Lotka-Volterra模型。首先,從自然系統(tǒng)中種群對資源競爭模型開始研究。然后,討論網(wǎng)絡(luò)虛擬化環(huán)境中各個構(gòu)成角色與自然生態(tài)系統(tǒng)各個生物鏈的相似性,得到了服務(wù)提供商間的競爭與自然系統(tǒng)中種群間的競爭同樣服從生態(tài)競爭模型。最重要的是,通過仿真,從多種角度討論了服務(wù)提供商間對資源的競爭滿足Lotka-Volterra模型。 (2)提出了基于Lotka-Volterra模型的資源分配算法。通過與最基本的二步式算法比較,對提出的算法進(jìn)行了仿真對比分析。結(jié)果表明,本文提出的基于生態(tài)模型的虛擬網(wǎng)絡(luò)資源分配算法能夠明顯提高收益和收益成本比,能夠有效的保證系統(tǒng)的穩(wěn)定性,在提高收益的同時(shí)避免了資源的浪費(fèi)。
[Abstract]:Network virtualization technology is the key to solve the current Internet problems. Network virtualization technology can achieve the goal of supporting multiple heterogeneous network sharing infrastructure. Among them, how to allocate the resources of virtual network is an important subject. In the network virtualization environment, reasonable resource allocation can achieve efficient sharing of physical network resources, and can maximize resource utilization under the condition of ensuring the demand of service providers. In the research of virtual network resource allocation, most resource allocation algorithms assume that the virtualization environment only includes a single infrastructure provider (physical network) and a single service provider (virtual network). In the case of multiple infrastructure providers or multiple service providers competition, how to achieve a better income or cost-benefit ratio, how to improve the utilization of physical resources, this area of research is relatively scarce, need to be carried out in depth. Based on the investigation and analysis of the research results of virtual network resource allocation, combined with the existing network resource allocation technology, this paper deeply studies the network resource allocation under the network virtualization environment. A resource allocation algorithm based on ecological model is proposed. The main contributions of this paper are as follows: 1) the Lotka-Volterra model of resource competition among service providers is proposed and validated. Firstly, the model of population-to-resource competition in natural system is studied. Then, the similarity between each component role in network virtualization environment and each biological chain of natural ecosystem is discussed, and the model of competition between service providers and populations in natural system is obtained. Most importantly, the Lotka-Volterra model of resource competition among service providers is discussed through simulation. A resource allocation algorithm based on Lotka-Volterra model is proposed. Compared with the basic two-step algorithm, the proposed algorithm is simulated and analyzed. The results show that the proposed virtual network resource allocation algorithm based on ecological model can significantly improve the ratio of income to cost, effectively guarantee the stability of the system, and avoid the waste of resources while increasing the income.
【學(xué)位授予單位】：北京郵電大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TP393.01

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本文編號：1921042