Joint Energy-QoE Efficient Content Delivery Networks Using Real-Time Energy Management

Abstract

In this paper, a joint optimization method has been proposed for energy cost and the user's perceived quality-of-experience (QoE) within a content delivery network (CDN). The proposed algorithm has been developed with an objective to minimize the total operational cost using real-time electricity pricing as well as the integration of green energy resources from the smart grid. To solve the joint optimization problem, a linear programming and a differential evolution algorithm have been used to provide a tradeoff between operational cost saving and computational complexity. We also formulate the joint problem as a noncooperative game in which the CDN providers act as players. A group utility ..