采用定价机制的多媒体系统多资源分配算法

针对多媒体系统多资源分配问题,提出了一种基于定价机制的多资源分配算法.假设资消耗函数是凸函数,从而推导出资源分配问题是凸规划问题,可以通过拉格朗日对偶分解理论求解,确定资源的价格并得到最优的资源分配.对于单资源分配问题,使用多标拍卖算法确定最优的资源分配.仿真实验结果表明:对于单资源分配问题,当任务的投标数大于15时,系统总的服务质量水平达到近似最优；对于多资源分配问题,基于定价机制的多资源分配算法性能优于现有算法,且算法复杂度更低.

Pricing Mechanism Based Multi-Resource Allocation for Multimedia System

Aiming at multi-resource allocation in multimedia system,a multi-resource allocation algorithm based on pricing mechanism is proposed.Assuming that resource consumption function is convex,the resource allocation is derived as a convex programming.Lagrange dual decomposition theory is employed to solve resource allocation,and the price of resource and the optimal resource allocation are obtained.For a single resource allocation,multi-bid auction algorithm is chosen to achieve the optimal resource allocation.The simulation shows that for a single resource allocation,when the number of each task bids is greater than 15,the total QoS of the system is almost optimal.For a multiple resource allocation,the performance of the multi-resource allocation algorithm based on pricing mechanism is better than the existing algorithms,with a lower algorithm complexity.