基本信息:
- 专利标题： UPLINK POWER CONTROL METHOD AND DEVICE
- 专利标题（中）：上行功率控制方法和装置
- 申请号：EP11871052.4 申请日：2011-08-12
- 公开(公告)号：EP2744277A1 公开(公告)日：2014-06-18
- 发明人： XU, Yueqiao , ZHANG, Yi , WANG, Yi , ZHANG, Yuantao , ZHOU, Hua
- 申请人： Fujitsu Limited
- 申请人地址： 1-1, Kamikodanaka 4-chome Nakahara-ku Kawasaki-shi, Kanagawa 211-8588 JP
- 专利权人： Fujitsu Limited
- 当前专利权人： Fujitsu Limited
- 当前专利权人地址： 1-1, Kamikodanaka 4-chome Nakahara-ku Kawasaki-shi, Kanagawa 211-8588 JP
- 代理机构： Wilding, Frances Ward
- 国际公布： WO2013023337 20130221
- 主分类号： H04W52/04
- IPC分类号： H04W52/04
摘要：
Embodiments of the present invention provide a method and apparatus for uplink power control. The method includes: transmitting, by user equipment, a sounding reference signal (SRS) to a network side according to a received triggering signal; receiving, by the user equipment, a path loss compensation value calculated based on the SRS and transmitted by the network side; estimating, by the user equipment, a path loss value according to a received cell-specific reference signal (CRS); and performing, by the user equipment, power compensation according to the path loss compensation value and the path loss value. In the present invention, on the basis of the original uplink power control performed according to the path loss estimated based on the downlink CRSs, the network side estimates the path loss compensation value of the UE by triggering the RRH UE to transmit aperiodic SRSs, and informs the UE in a semi-static manner, thereby compensating for the inaccuracy of estimation of path loss and ensuring the efficiency of power control.
摘要（中）：
本发明的实施例提供了用于上行链路功率控制的方法和设备。 该方法包括：用户设备根据接收到的触发信号向网络侧发送探测参考信号SRS; 所述用户设备接收网络侧发送的基于所述SRS计算得到的路径损耗补偿值; 所述用户设备根据接收到的小区特定参考信号CRS估计路径损耗值; 所述用户设备根据所述路径损耗补偿值和所述路径损耗值进行功率补偿。 在本发明中，网络侧根据基于下行CRS估计的路径损耗进行原始上行功率控制，通过触发RRH UE发送非周期SRS来估计UE的路径损耗补偿值， 以半静态方式通知UE，从而补偿了路径损耗估计的不准确性，保证了功率控制的效率。