基于垂直切换的TD-LTE与LTE-FDD异系统负载均衡算法研究  

Research on the Load Balancing Algorithm between TD-LTE and LTE-FDD Hybrid System Based on Vertical Handover

作　　者：李永刚[1] 任阳[1] 张治中[1] 

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065

出　　处：《移动通信》2016年第24期72-77,共6页Mobile Communications

基　　金：863计划(2015AA01A705);重庆市博士后特别资助(Xm2015022);国家自然科学基金(61273235);重庆市科委前沿计划(cstc2015jcyj A40019)

摘　　要：为了提高多制式混合组网时的吞吐量和资源利用率,以网络资源利用率为参考对系统内的用户进行异系统垂直切换,从而使混合组网后的系统负载得到均衡。通过该整合系统的仿真,在保证无线链路丢失率不受显著影响的前提下,该方法使得蜂窝小区的平均吞吐率有所提高,并能找到使吞吐率最大时的最佳切换阈值。In order to improve the throughput and the resource utilization in multi-mode hybrid networks, a method was proposed that the vertical handover is implemented to the user in the system based resource utilization to balance the system load in the hybrid system. Simulation results show that, on the premise of basically guaranteeing packet loss ratio on wireless link, the proposed method can improve the average throughput in the cell, as well as determine the optimal handover threshold in the light of the maximum throughput.

关 键 词：负载均衡 系统切换 资源块 下行链路 

分 类 号：TN915.81[电子电信—通信与信息系统]