LTE-A系统中基于CoMP的能耗管理方法

为了提高长期演进后续系统( LTE-A)的能效,引入一种基于多点协作传输( CoMP)的技术,在初始服务小区休眠时能补偿网络覆盖。首先,根据等价小区原则将网络划分为若干簇；然后,设计一个模型用以选择协作小区以及相应的休眠小区；最后,用两个指标评估节能方法的效率。仿真结果显示,当综合考虑休眠小区占比和服务质量时,1600 m的分簇半径能达到最佳效果,由此可得,多点协作技术能有效地应用在能耗管理中。

Management Method of Energy Consumption Based on CoMP in LTE-A System

Due to the growing demand of green network, to investigate new energy-saving methods that can enable a transition towards a greener long term evolution advanced ( LTE-A) is important. A technol-ogy based on coordinated multiple points transmission( CoMP) was adopted to improve the coverage where the initial serving cells are dormant. At first, the network is divided into several independent clusters ac-cording to equivalent cell principle. Then the designed model selects cooperative cells and corresponding dormant cells. Finally, two indexes were adopted to evaluate the efficiency of energy-saving method. Simulations show that the optimal clustering radius is 1 600 m since the dormant cell rate and the quality of service are taken into account together, which prove that the technology is effective to manage energy consumption.