Cache-Based Green Distributed Cell Dormancy Technique for Dense Heterogeneous Networks

Green communication is becoming an impacting quality feature in cellular communications nowadays. Several techniques discuss how to improve cellular network energy efficiency without affecting the system throughput. However, caching combing with dormancy approach in heterogeneous dense networks (HDN) has not attracted enough attention. Due to this, this paper proposes a Distributed Cell Dormant Technique that considers caching for improving the energy efficiency of HDN while overcoming the problem of excessive back-haul overhead. The proposed approach considers the power consumption in a system that a macro cell shares with multiple micro cells. And, it manages reconciled network statistics of each cell in a tabular format that uses the wake-up and dormancy operations in a distributed network. The performance evaluation shows that the proposed method significantly reduces system power consumption without decreasing average throughput in the dense heterogeneous networks.