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1. 衢州职业技术学院,浙江 衢州 324000
2. 浙江大学计算机科学与技术学院,浙江 杭州 310027
[ "余建军(1969-),男,衢州职业技术学院信息工程学院院长、教授,主要研究方向为算法设计与分析、网络虚拟化、光网络、无线传感器网络等。" ]
[ "吴春明(1967-),男,博士,浙江大学教授、博士生导师,主要研究方向为互联网体系结构、可重构网络、软件定义网络、网络虚拟化和网络安全技术等。" ]
网络出版日期:2016-02,
纸质出版日期:2016-02-15
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余建军, 吴春明. 基于成本约束的虚拟网映射策略及竞争分析[J]. 电信科学, 2016,32(2):47-54.
Jianjun YU, Chunming WU. Virtual network mapping strategy and competitive analysis based on cost constraint[J]. Telecommunication science, 2016, 32(2): 47-54.
余建军, 吴春明. 基于成本约束的虚拟网映射策略及竞争分析[J]. 电信科学, 2016,32(2):47-54. DOI: 10.3969/j.issn.1000-0801.2016.02.007.
Jianjun YU, Chunming WU. Virtual network mapping strategy and competitive analysis based on cost constraint[J]. Telecommunication science, 2016, 32(2): 47-54. DOI: 10.3969/j.issn.1000-0801.2016.02.007.
为实现物理网提供商长期收益的最大化,单个虚拟网的映射成本和接入控制策略最为关键,但在之前的研究中,资源价格定义不能反映资源供求关系,不利于物理网资源的有效利用,且接入控制策略没有综合考虑成本和收益的关系。为此,首先基于凸二次规划松弛方法,设计以映射成本最小化为目标的单虚拟网映射方案求解的近似算法;然后,针对动态到达的单虚拟网构建请求,基于影子价格的物理网资源定价策略,用上述近似算法求出映射方案,并基于映射成本约束的虚拟网接入控制策略,完成竞争算法设计,并给出算法的竞争比分析。实验表明,所提方法能使物理网资源得到有效利用,进而提高虚拟网构建请求的接受率和物理网提供商的长期收益。
The approximation algorithm of single virtual network mapping solution aimed to minimize the mapping cost based on convex quadratic programming relaxation was designed. Then aiming for dynamic arrival construction request of the single virtual network,the mapping scheme was achieved based on physical network resource pricing strategy by shadow price,applying above-mentioned approximation algorithm. And then completed the competitive algorithm design based on virtual network admission control strategy by mapping cost constraint and provided the competitive analysis of this algorithm. Experiment results show that the proposed algorithm increases the effective utilization of physical network resources,hence it can improve the virtual network construction request acceptance ratio and the long-term profit of physical network service provider.
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