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。

公开(公告)号：US09907089B2

公开(公告)日：2018-02-27

申请号：US14823746

申请日：2015-08-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xingxin Zhang ,  Xun Yang ,  Tianyu Wu ,  Menghong Liu

IPC: H04W72/14 ,  H04W72/04 ,  H04L1/16 ,  H04B7/0452 ,  H04W74/08 ,  H04L1/00 ,  H04W84/12

CPC classification number: H04W72/14 ,  H04B7/0452 ,  H04L1/1614 ,  H04L1/1685 ,  H04L2001/0092 ,  H04W72/0406 ,  H04W72/042 ,  H04W72/0446 ,  H04W74/0833 ,  H04W84/12

Abstract: Embodiments of the present invention disclose a method and an apparatus for retrieving transmission opportunity control in reverse direction grant. The method includes: obtaining, by a reverse direction responder (RD responder), a TXOP control from a reverse direction initiator (RD initiator); enabling, by the RD responder, a multi-user multiple-input multiple-output (MU-MIMO) mode; sending, by the RD responder, a frame to a plurality of stations concurrently in a TXOP period, the plurality of stations comprise the RD initiator; wherein the frame carries information that only requires the RD initiator to send back only a single acknowledgement in the TXOP period to return the TXOP control.

公开(公告)号：US09185692B2

公开(公告)日：2015-11-10

申请号：US13689445

申请日：2012-11-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xingxin Zhang ,  Xun Yang ,  Tianyu Wu ,  Menghong Liu

IPC: H04W72/04 ,  H04L1/16 ,  H04W74/08 ,  H04B7/04 ,  H04L1/00 ,  H04W84/12

CPC classification number: H04W72/14 ,  H04B7/0452 ,  H04L1/1614 ,  H04L1/1685 ,  H04L2001/0092 ,  H04W72/0406 ,  H04W72/042 ,  H04W72/0446 ,  H04W74/0833 ,  H04W84/12

Abstract: Embodiments of the present invention disclose a method and an apparatus for retrieving transmit opportunity control in reverse direction grant, so that a conflict occurring between a case where an RD Initiator continues sending another frame to an RD Responder after retrieving TXOP control and a case where a terminal other than the RD Initiator sends a block acknowledgement to the RD Responder can be avoided. The method provided in the embodiments of the present invention includes: when an RD Initiator fails to correctly demodulate a frame sent by an RD Responder, retrieving, by the RD Initiator, TXOP control by using a PIFS if it is impossible for the RD Responder to enable an MU-MIMO mode, and retrieving, by the RD Initiator, the TXOP control by using a duration if it is possible for the RD Responder to enable the MU-MIMO mode, where the duration is longer than the PIFS.

Abstract translation: 本发明的实施例公开了一种用于在反向授权中检索发送机会控制的方法和装置，使得在RD发起者在检索TXOP控制之后继续向RD响应者发送另一帧的情况之间发生冲突，以及在 除RD启动器之外的终端发送块确认给RD响应者可以避免。 本发明实施例中提供的方法包括：当RD启动器未能正确地解调由RD响应器发送的帧时，由RD启动器检索通过使用PIFS的TXOP控制，如果RD应答器不可能 启用MU-MIMO模式，并且如果RD响应器能够启用MU-MIMO模式（其持续时间长于PIFS），则RD启动器通过使用持续时间来检索TXOP控制。

公开(公告)号：US10256874B2

公开(公告)日：2019-04-09

申请号：US15854489

申请日：2017-12-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zongming Yao ,  Menghong Liu ,  Linfeng Xia

IPC: H04B7/0417 ,  H04B7/06 ,  H04B7/0408 ,  H04B7/0452

Abstract: A data feedback method includes acquiring, by the beamformee, the number of columns from a null data packet announcement (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.

公开(公告)号：US20140192914A1

公开(公告)日：2014-07-10

申请号：US14209565

申请日：2014-03-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Menghong Liu ,  Xuehuan Wang ,  Long Luo

IPC: H04B7/06

CPC classification number: H04B7/0619 ,  H04B7/0617 ,  H04B7/0645

Abstract: Provided in the embodiments of the present invention are a method, a device and a system for setting a weight feedback granularity, relating to communication technologies, which solve the problem that a beamforming transmitting end can not control a beamforming weight feedback granularity. The method comprises: receiving a null data packet announcement (NDPA) frame comprising a weight feedback granularity requirement value transmitted by the beamforming transmitting end; receiving a null data packet (NDP) frame transmitted by the beamforming transmitting end, and measuring the beamforming weight by using the weight feedback granularity requirement value as a granularity; and transmitting a very high throughput compressed beamforming (VCBF) frame to the beamforming transmitting end, wherein the very high throughput compressed beamforming (VCBF) frame comprises the beamforming weight using the weight feedback granularity requirement value as the granularity. The embodiments of the present inventions are suitable for setting a weight feedback granularity.

Abstract translation: 在本发明的实施例中提供了一种用于设置与通信技术有关的权重反馈粒度的方法，装置和系统，其解决了波束成形发送端不能控制波束成形权重反馈粒度的问题。 该方法包括：接收包括由波束成形发送端发送的加权反馈粒度要求值的零数据分组公告（NDPA）帧; 接收由波束成形发送端发送的空数据分组（NDP）帧，并通过使用权重反馈粒度要求值作为粒度来测量波束成形权重; 以及将非常高吞吐量的压缩波束成形（VCBF）帧发送到波束成形发送端，其中非常高吞吐量的压缩波束形成（VCBF）帧包括使用权重反馈粒度要求值作为粒度的波束成形权重。 本发明的实施例适合于设置重量反馈粒度。

公开(公告)号：US20130235947A1

公开(公告)日：2013-09-12

申请号：US13869479

申请日：2013-04-24

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: A data feedback method 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: 数据反馈方法包括：通过波束形成器获取NDPA消息中的列数; 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。