LTE系统下行链路FDRX节能机制研究

Research on Energy Saving Mechanism of Downlink FDRX in LTE System

文章提出了LTE系统下行链路FDRX节能机制,以动态调整单一终端DRX机制为基础,在满足时间延迟前提下取得较好电量消耗。该机制分为两个阶段,其中第一阶段为流量预估和数据信息收集,第二阶段为模糊逻辑控制,以得到最佳DRX cycle参数值,并将此参数值传给UE,让UE使用在下一时间段的DRX模式中。通过仿真发现:对于非即时服务业务,在满足较低延迟时间的Qo S需求下,FDRX机制具有最低电量消耗;而对于即时服务业务,FDRX机制效能最为优异。

This paper proposes the downlink FDRX energy saving mechanism of LTE system.Based on the dynamic adjustment of single terminal DRX mechanism,good power consumption is achieved under the premise of meeting the time delay.The mechanism is divided into two stages,the first stage of which is traffic estimation and data information collection.The second stage is fuzzy logic control to get the best DRX cycle parameter value and pass this parameter value to UE to make UE use the DRX mode in the next period.The simulation results show that FDRX mechanism has the lowest power consumption for non-instant service businesses under QoS requirements such as low delay time.For instant services,the FDRX mechanism is the most effective one.