摘要
针对因用户设备移动性和小区覆盖率造成的网络负载周期性不平衡问题,引入小蜂窝网络以支持高数据率服务和密集部署,提出一种自适应网络负载状态并考虑负载估计的小蜂窝网络移动性负载平衡算法。该算法根据过载单元和相邻单元调整进行参数切换,其资源利用取决于信号质量和所连接用户设备在长期演进网络(LTE)中的流量需求,并定义资源块利用率作为单元负载的度量,根据网络负载情况使用自适应阈值来确定过载单元。为避免性能振荡,考虑移动负载对网络的影响,进行负载均衡过程设计。最后通过系统级仿真评价了该算法在不同环境下的性能,仿真结果表明,该算法在网络间提供了更均衡的负载(即小区间的标准差较小),比以前的算法具有更高的网络吞吐量。
Aiming at the periodic load imbalance caused by user equipment mobility and cell coverage,this paper introduced a cellular network to support high data rate services and intensive deployment,and proposed an adaptive load balancing algorithm for cellular networks considering load estimation.Firstly,the algorithm switched parameters according to the adjustment of overload units and adjacent units.The utilization of resources depended on the signal quality and the traffic demand of the connected user equipment in the long-term evolution(LTE).This paper defined the utilization rate of resource blocks as a measure of unit load,and determined the overload list by using adaptive threshold according to the network load situation.In order to avoid performance oscillation,considering the impact of mobile load on the network,it designed the load balancing process.Finally,it evaluated the performance of the algorithm in different environments by system-level simulation.The simulation results show that the algorithm provides a more balanced load between networks(so that the standard deviation between cells is smaller),and has higher network throughput than previous algorithms.
作者
刘航
罗建国
许兴民
Liu Hang;Luo Jianguo;Xu Xingmin(Key Laboratory of Mine Equipment Safety Monitoring in Hebei Province,School of Mechanical&Electrical Engineering,North China Institute of Science&Technology,Langfang Hebei 065201,China)
出处
《计算机应用研究》
CSCD
北大核心
2021年第3期866-870,共5页
Application Research of Computers
基金
中央高校基本科研业务经费资助项目(3142019016)
廊坊市科学技术研究与发展计划自筹经费资助项目(2019011040)
国家级大学生创新创业训练项目(201911104017)。
关键词
有约束
参数切换
小蜂窝
移动设备
负载均衡
自适应
constrained
parameter switching
cellular
mobile devices
load balancing
adaptive
