基于动态门限的异构无线网络协作节能算法

针对现有异构无线网络节能方法未能充分发挥网间协作潜力, 缺乏载频、 基站等不同粒度关断技术的综合应用及理论分析, 节能效果有待进一步提高的问题, 提出一种基于动态门限的异构无线网络协作节能算法(ESDT: Energy Saving Algorithm Based on Dynamic Thresholds)。该算法将载频、 基站等不同粒度关断技术相结合, 以最小化系统整体能耗为目标, 应用排队理论对门限值进行动态调整, 根据系统负载变化, 动态开关多粒度资源。仿真结果表明, 在保证系统接入阻塞率的前提下, 该算法与动态开关载频单一粒度节能算法相比, 节能效果更佳, 资源利用率更高。

Cooperative Energy-Saving Algorithm Based on Dynamic Thresholds in Heterogeneous Wireless Networks

In existing energy saving methods for heterogeneous wireless networks, the potential for inter-network collaboration has not been brought into full play, lack of the comprehensive application and theoretical analysis of carrier frequency turn-off technology and base station turn off technology result in unsatisfactory energy-saving effect. In order to solve the problem, this paper proposes a cooperative ESDT(Energy Saving Algorithm Based on Dynamic Thresholds) in heterogeneous wireless networks. Aiming at minimizing the overall system energy consumption, the algorithm combines carrier frequency turn-off tech nology and base station turn-off technology, and applies queuing theory toadjust thresholds and dynamically turn on/off multi-granularity resources acco rding to system load condition to achieve energy-saving effect. Simulation results show that the proposed algorithm compared to the algorithm dynamically switching the carrier frequency, has better energy-saving effect and higher resourceutilization on the premise of the guarantee system performance.