LTE载波聚合移动性方案及性能研究

摘要

载波聚合技术可充分聚合运营商离散频谱资源，提升网络峰值速率和容量，但不同频率的无线电波在空气中的衰减程度不同，会造成不同频带的覆盖范围存在差异，需要对载波聚合移动性管理进行研究。首先对LTE载波聚合空闲态以及连接态的移动性方案进行研究，然后分析了载波聚合不同的切换场景，结合CA外场测试数据对不同切换方案的时延性能进行分析，最后给出了主载波和辅载波不同覆盖场景下的切换方案。%Carrier aggregation gathers the dispersed spectrum of operators,which can raise the network peak data rate and capacity. But the different frequencies of radio waves in the air attenuation degree is different,can cause the different coverage area,it needs to research the mobility management of carrier aggregation. It firstly studies the mobility scheme of LTE carrier aggrega-tion in idle state and connected state,then analyzes the carrier aggregation’s handover scenario,combined with the delay performance of CA field test data. Final y,it gives the handover solution of primary component carrier and secondary compo-nent carrier under different coverage scenarios.