公开(公告)号：US20130215947A1

公开(公告)日：2013-08-22

申请号：US13838420

申请日：2013-03-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zongming Yao ,  Menghong Liu ,  Linfeng Xia

IPC: H04B7/04

CPC classification number: H04B7/0417 ,  H04B7/0408 ,  H04B7/0452 ,  H04B7/0617 ,  H04B7/063

Abstract: Embodiments of the present invention disclose data feedback methods and related apparatuses. This enables a beamformer to adjust the communication status according to related channel information about a beamformee no matter whether the number of actual active antennas of the beamformee is larger than or equal to the number of columns set by the beamformer in an NDPA message. The data feedback method according to the embodiments of the present invention includes: acquiring, by the beamformee, the number of columns from the NDPA message; detecting the number of active first spatial streams; comparing the number of first spatial streams with the number of columns, and taking the smaller value obtained from the comparison as the number of second spatial streams required for feedback; and feeding back the number of second spatial streams and spatial stream measurement information about the second spatial streams to the beamformer.

Abstract translation: 本发明的实施例公开了数据反馈方法和相关装置。 这使得波束形成器能够根据关于波束成形器的相关信道信息来调整通信状态，无论波束形成器的实际有效天线的数量是否大于或等于由NDPA消息中的波束形成器设置的列数。 根据本发明的实施例的数据反馈方法包括：由波束形成器从NDPA消息中获取列数; 检测活动的第一空间流的数量; 将第一空间流的数量与列数比较，并将从比较获得的较小值作为反馈所需的第二空间流的数量; 并将关于第二空间流的第二空间流的数量和空间流测量信息反馈给波束形成器。