公开(公告)号：US20160323887A1

公开(公告)日：2016-11-03

申请号：US15085844

申请日：2016-03-30

Applicant: QUALCOMM INCORPORATED

Inventor： SHIMMAN ARVIND PATEL ,  WANSHI CHEN ,  PETER GAAL ,  HAO XU ,  MICHAEL MAO WANG

IPC: H04W72/04 ,  H04W52/34 ,  H04W52/36

CPC classification number: H04W52/34 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/1469 ,  H04W28/06 ,  H04W52/146 ,  H04W52/16 ,  H04W52/243 ,  H04W52/365 ,  H04W52/367 ,  H04W72/0446

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may determine separate uplink (UL) power limitations for multiple transmission time interval (TTI) durations based on distinct power control parameters. In some cases, an adjustment factor or a power backoff may be applied to communications using one TTI duration to ensure that total transmit power does not exceed a threshold. The UE and the serving base station may also identify one or more demodulation reference signal (DMRS) windows. UL data transmissions may be demodulated based on a DMRS sent during the same window. Transmit power control (TPC) commands may be applied at the beginning of each window. However, if an UL transmission is scheduled at the beginning of the window, the UE may wait until a DMRS transmission or until no more transmissions are scheduled for the window before applying the TPC adjustment.

Abstract translation: 描述了用于无线通信的方法，系统和设备。 用户设备（UE）可以基于不同的功率控制参数确定针对多个传输时间间隔（TTI）持续时间的单独的上行链路（UL）功率限制。 在一些情况下，调整因子或功率回退可以应用于使用一个TTI持续时间的通信，以确保总发射功率不超过阈值。 UE和服务基站还可以识别一个或多个解调参考信号（DMRS）窗口。 可以基于在同一窗口期间发送的DMRS来解调UL数据传输。 发送功率控制（TPC）命令可以在每个窗口的开头应用。 然而，如果在窗口开始调度UL传输，则UE可以等待直到进行DMRS发送，或直到在应用TPC调整之前不再为窗口调度更多的传输。