Optimal Energy Efficient Offloading in small cell HetNet with auction

The small cell network based Heterogeneous Network (HetNet) is featured as the promising way to meet the higher capacity improvement requirements for future. But how to effectively solve the upcoming heavy load and low Energy Efficiency (EE) problem in densely deployment scenario are still the key challenges for the small cell HetNet. In order to solve above problems, we implement the offloading strategy to make the load flow within the network tiers of the HetNet and provide better EE performances. Based on the auction theory, we propose the Optimal Energy Efficient Offloading (OEEO) scheme to maximize the system EE performance under the constraints of guaranteed requirements for the offloading processes. The Karush-Kuhn-Tucker (KKT) condition is utilized to find the optimal solutions. According to the observation of system-level simulation results, the proposed OEEO scheme has better performances over previous work.