本文選題：光通信　切入點：彈性光網(wǎng)絡(luò)　出處：《中國激光》2017年09期

【摘要】：針對彈性光網(wǎng)絡(luò)中虛擬網(wǎng)絡(luò)映射的資源消耗問題,綜合考慮節(jié)點、鏈路對虛擬網(wǎng)絡(luò)映射資源需求的影響,提出了節(jié)點優(yōu)先的虛擬網(wǎng)絡(luò)映射算法。所提算法先對虛擬節(jié)點依據(jù)節(jié)點權(quán)值進行排序,然后為虛擬節(jié)點分配滿足資源需求的物理節(jié)點,并采用貪心原則映射虛擬節(jié)點,最后利用協(xié)同映射方式將虛擬鏈路映射到長度最短的無環(huán)物理路徑上,以達到減小虛擬網(wǎng)絡(luò)資源消耗的目的。仿真結(jié)果表明,所提算法能有效減小虛擬網(wǎng)絡(luò)資源消耗并降低網(wǎng)絡(luò)請求阻塞率。
[Abstract]:In order to solve the problem of resource consumption of virtual network mapping in elastic optical networks, a node-first virtual network mapping algorithm is proposed considering the effect of nodes and links on the resource requirements of virtual network mapping.The proposed algorithm first sorts the virtual nodes according to the weights of the nodes, then allocates the physical nodes to meet the resource requirements for the virtual nodes, and maps the virtual nodes according to the greedy principle.Finally, the virtual link is mapped to the shortest physical path in order to reduce the resource consumption of the virtual network.Simulation results show that the proposed algorithm can effectively reduce the consumption of virtual network resources and reduce the blocking rate of network requests.
【作者單位】： 河北工程大學信息與電氣工程學院;
【基金】：河北省自然科學基金(F2014402075,F2017402068) 河北省高等學�？茖W技術(shù)研究青年基金(QN2016090)
【分類號】：TN929.1

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