基于用户位置的5G智能化数字室分点控节能应用

Energy-saving Application for 5G Intelligent Digital Indoor Distribution Single-Control Based on User Location

随着移动终端数量的大规模爆发增长,室分接入系统开始承载网络中的绝大部分业务流量。传统节能技术均以小区为单位,当一个小区中仅有单点pRRU高负荷时,整个小区都无法进入节能状态;因此提出一种基于数字室分的新型节能方法,通过识别各pRRU对上行信号的接收和测量,确定终端归属pRRU的集合,从而确定每个pRRU下的用户业务情况,对于有话务pRRU,保持处于正常工作状态,对于无话务pRRU(该pRRU下无终端驻留&该pRRU下有终端驻留但是无业务发送),进入到时隙级功放关断节能状态,清除数据且关闭功放。从外场测试的情况来看,基站侧可以准确识别发生业务的UE对应的pRRU位置;功能打开后UE下行速率保持稳定;pRRU符号关断时长增加;8个pRRU小区最大可节省功率12.47%;平均功率节省约6W;此方法在任何场景都可以获得节能收益且能有效降低工作状态pRRU对相邻小区的电磁干扰。

With the explosive growth in the number of mobile terminals,indoor distributed access systems have become responsible for carrying the majority of traffic in wireless networks.Traditional energy-saving techniques operate at the cell unit level,which means that when a single point power radioresource unit(pRRU)has a high load in a cell,the entire cellcannot enter the energy-saving state.Therefore,this paper proposes a new energy-saving method based on digital indoor distributed access system.By identifying and measuring the reception of uplink signals by each pRRU,the set of pRRUs to which the terminals belong is determined,and the user service status under each pRRU is determined.For pRRUs with trafic,they remain in normal working state,while for pRRUs without traffic(ie.,no terminals are present or terminals are present but no business is being sent),they enter the time-slot-level power amplifier shutdown energy-saving state,clearing data,and shutting down the amplifier.Field test results demonstrate that the base station can accurately identify the location of the pRRU corresponding to the UE that generates traffic.After the function is turned on,the UE's downstream rate remains stable,and the duration of pRRU symbol shutdown increases.The maximum power saving for eight pRRU cells is 12.47%,and the average power saving is about 6 W.This method can achieve energy-saving benefits in any scenario and can effectively reduce the electromagnetic interference of working state pRRU on adjacent cells.