本文關(guān)鍵詞： 網(wǎng)絡(luò)虛擬化 G 虛擬化演進(jìn)分組核心網(wǎng) 虛擬網(wǎng)絡(luò)映射 子圖同構(gòu)　出處：《電子與信息學(xué)報(bào)》2017年05期 　論文類型：期刊論文

【摘要】：5G及未來移動(dòng)通信網(wǎng)絡(luò)虛擬化的場景下,資源的管理與編排是實(shí)現(xiàn)虛擬化演進(jìn)分組核心網(wǎng)(v EPC)業(yè)務(wù)高效部署的關(guān)鍵問題。v EPC中業(yè)務(wù)功能的載體是服務(wù)功能鏈(SFC),不同服務(wù)功能鏈的控制信令與多媒體數(shù)據(jù)流呈現(xiàn)負(fù)載差異化特點(diǎn)。該文針對(duì)傳統(tǒng)算法資源定比分配所導(dǎo)致的負(fù)載不均問題,提出服務(wù)功能鏈的控制層和轉(zhuǎn)發(fā)層解耦的映射模型,解耦后不同層的服務(wù)鏈可以獨(dú)立地?cái)U(kuò)容和縮容,實(shí)現(xiàn)資源精準(zhǔn)按需切片。拓?fù)溆成潆A段引入圖相似理論,提出一種基于子圖同構(gòu)的虛擬網(wǎng)絡(luò)映射算法VF2-H,依據(jù)節(jié)點(diǎn)的全局資源度優(yōu)選映射子網(wǎng),通過圖特征分析設(shè)置剪枝條件,采用回溯機(jī)制進(jìn)行啟發(fā)式搜索。仿真結(jié)果表明,該算法在租戶請(qǐng)求接收率、長期收益開銷比等方面均具有良好的性能。
[Abstract]:5G and future mobile communication network virtualization scenarios. Resource management and orchestration is the key problem to implement the efficient deployment of virtualization evolution packet core network (vEPC) services. The carrier of service function in v EPC is the service function chain (SFCs). The control signaling of different service function chains and multimedia data streams present the characteristics of load difference. This paper aims at the load inequality caused by the resource ratio allocation of traditional algorithms. A mapping model of decoupling between control layer and forwarding layer of service function chain is proposed. After decoupling, the service chain of different layers can be expanded and reduced independently, and the precise on-demand slicing of resources can be realized. The graph similarity theory is introduced into the topology mapping stage. A virtual network mapping algorithm VF2-Hbased on subgraph isomorphism is proposed. According to the global resource degree of nodes, the optimal mapping subnet is selected, and the pruning condition is set up through graph feature analysis. The simulation results show that the proposed algorithm has good performance in terms of tenant request reception rate and long-term pay-cost ratio.
【作者單位】： 國家數(shù)字交換系統(tǒng)工程技術(shù)研究中心;移動(dòng)互聯(lián)網(wǎng)安全技術(shù)國家工程實(shí)驗(yàn)室;
【基金】：國家863計(jì)劃(2014AA01A701) 國家自然科學(xué)基金(61521003) 科技部支撐計(jì)劃(2014BAH30B01)~~
【分類號(hào)】：TN929.5
【正文快照】： 虛擬化技術(shù)通過服務(wù)、資源的抽象屏蔽底層網(wǎng)絡(luò)復(fù)雜性,以解決傳統(tǒng)移動(dòng)網(wǎng)絡(luò)架構(gòu)的僵化、緊耦合問題,成為5G網(wǎng)絡(luò)的關(guān)鍵技術(shù)[1]。軟件定義網(wǎng)絡(luò)(Software Defined Network,SDN)和網(wǎng)絡(luò)功能虛擬化(Network Function Virtualized,NFV)是5G移動(dòng)通信網(wǎng)虛擬化的驅(qū)動(dòng)力量。SDN從“水平”方，

本文編號(hào)：1487716