公开(公告)号：US20150351124A1

公开(公告)日：2015-12-03

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 ,  H04B7/04 ,  H04W72/04

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.

Abstract translation: 本发明的实施例公开了一种用于在反方向授权中检索发送机会控制的方法和装置。 该方法包括：通过反向响应器（RD响应器）从反向发起器（RD启动器）获得TXOP控制; 由RD应答器实现多用户多输入多输出（MU-MIMO）模式; 所述RD响应器在TXOP周期期间同时向多个站发送帧，所述多个站包括所述RD启动器; 其中该帧携带仅需要RD起始器在TXOP周期中仅发送单个确认以返回TXOP控制的信息。

公开(公告)号：US20180123655A1

公开(公告)日：2018-05-03

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 ,  H04B7/0408 ,  H04B7/06

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 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：US20130083781A1

公开(公告)日：2013-04-04

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

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， 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：US20130100909A1

公开(公告)日：2013-04-25

申请号：US13712322

申请日：2012-12-12

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xingxin ZHANG ,  Xun YANG ,  Tianyu WU ,  Menghong LIU

IPC: H04W72/04

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, 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方向授权中检索传输机会控制的方法和装置，使得在检索TXOP控制之后RD启动器继续向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。