發(fā)布時間：2018-07-22 15:24

【摘要】：為提高云存儲環(huán)境下內容分發(fā)網(wǎng)絡(CDN)的分發(fā)效率,提出一種基于Stackelberg博弈的緩存資源分配與定價算法。將Web服務器和云CDN代理商建模成一個多主多從的Stackelberg博弈模型,并構建其各自的效用函數(shù)。證明在代理商價格確定的情況下存在Web服務器納什均衡點,利用一種分布式迭代算法求解博弈模型,得到最優(yōu)定價與該定價下的最優(yōu)緩存分配結果。仿真結果表明,該算法可保證Web服務器緩存需求在代理商之間的高效分配,與用戶服務質量優(yōu)先算法相比,可使Web服務器獲得更高的單位成本效益。
[Abstract]:In order to improve the efficiency of content distribution network (CDN) in cloud storage environment, a buffer resource allocation and pricing algorithm based on Stackelberg game is proposed. Web servers and cloud CDN agents are modeled as a multi-principal multi-slave Stackelberg game model and their respective utility functions are constructed. It is proved that there exists a Web server Nash equilibrium point when the agent price is determined. A distributed iterative algorithm is used to solve the game model, and the optimal pricing and the optimal cache allocation under this pricing are obtained. The simulation results show that the proposed algorithm can ensure the efficient allocation of cache requirements among agents, and it can achieve higher unit cost benefit than the QoS priority algorithm.
【作者單位】： 北京信息科技大學信息與通信工程學院;
【基金】：國家自然科學基金“基于資源標簽交換的無線網(wǎng)絡端到端能效管理策略研究”(61271198) 北京市教委科技計劃重點項目“分層合作博弈的端到端綠色網(wǎng)絡體系與關鍵技術研究”(KZ201511232036)
【分類號】：TP393.0
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本文編號：2137897