面向5G异构网络的切换自优化算法研究

Research on SON Efficient Handover Algorithm for 5G HetNets

基于降低5G网络运营成本的需要,通过改进传统算法,提出了一种切换自优化算法。将候选小区的负载率和用户的移动速度作为选择目标小区的主要依据:当用户移动速度大于等于门限时选择切换到高负载宏基站;当用户移动速度小于等于门限时选择切换到高负载微基站。在充分发挥部分基站服务能力的同时,让部分无数据需要处理的基站载频暂时休眠。仿真结果表明,在用户以不同速度移动的场景下,实现切换目标的自动优化后,都可以大幅度减少网络的整体负荷。

Based on the need to reduce the operation cost of 5G networks,an SON efficient handover algorithm is proposed by improving the traditional algorithm.Taking the load rate of candidate cell and the mobile speed of users as the main basis for selecting the target cell,when the user's moving speed is greater than or equal to the threshold,it chooses to switch to the high load Acer station,and when the user's mobile speed is less than or equal to the threshold,it chooses to switch to the high load micro base station.While giving full play to the service ability of some base stations,the carrier frequency of some base stations without data to be processed is temporarily dormant.The simulation results show that the new algorithm can greatly reduce the energy consumption and reduce the OPEX in the network under different scenarios.