公开(公告)号：US10368370B2

公开(公告)日：2019-07-30

申请号：US15473357

申请日：2017-03-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yunbo Li ,  Zhou Lan ,  Yanchun Li

IPC: H04W74/08 ,  H04W84/12

Abstract: Embodiments of the present application disclose a multichannel access method, including: obtaining a transmission opportunity TXOP of a first reserved channel; sensing a non-reserved channel other than the first reserved channel in a preset time segment in the TXOP, and if the non-reserved channel is in an idle state, using the non-reserved channel as a second reserved channel; and when an ending moment of the preset time segment is reached, sending a current data frame on the first reserved channel and the second reserved channel. Correspondingly, the embodiments of the present application further disclose a multichannel access apparatus. Channel utilization can be improved by implementing the embodiments of the present application.

公开(公告)号：US10154495B2

公开(公告)日：2018-12-11

申请号：US15446871

申请日：2017-03-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yanchun Li ,  Bo Li ,  Qiao Qu

IPC: H04W16/10 ,  H04W24/02 ,  H04W72/04 ,  H04W40/00 ,  H04W72/06 ,  H04W74/08

Abstract: Embodiments provide a channel selection method and a transmit end, and the method includes: ranking multiple channels, and generating a backoff count value; sequentially decrementing, from an initial timeslot, the backoff count value in each timeslot according to a ranking sequence of the channels and busy/idle states of all the channels until the backoff count value is 0; and selecting, from the multiple channels according to a result of the decrement performed on the backoff count value and a busy/idle state of at least one of the multiple channels, a channel that is used by the transmit end for sending data. The method and the transmit end can improve channel utilization.

公开(公告)号：US20180295627A1

公开(公告)日：2018-10-11

申请号：US16008656

申请日：2018-06-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yunbo Li ,  Ming Gan ,  Yanchun Li ,  Xiao Han

IPC: H04W72/04

Abstract: Embodiments of the present invention provide a data transmission method and a station. The method includes: transmitting, by a station, data of a primary access category (AC) of the station within a current transmission opportunity (TXOP), where to-be-transmitted data of the station includes the data of the primary AC and data of at least one secondary AC; after transmission of the data of the primary AC is completed, determining, by the station, whether there is remaining time in the TXOP; and if there is remaining time in the TXOP, transmitting, by the station, the data of the at least one secondary AC within the remaining time. According to the method provided in the embodiments of the present invention, the current TXOP is fully utilized without a channel resource wasted, thereby improving data transmission efficiency of the station.

公开(公告)号：US12301505B2

公开(公告)日：2025-05-13

申请号：US18658311

申请日：2024-05-08

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jian Yu ,  Oded Redlich ,  Leonid Epstein ,  Shimon Shilo ,  Genadiy Tsodik ,  Yanchun Li

IPC: H04L5/00 ,  H04W80/02 ,  H04W84/12

Abstract: A signal field indication method and apparatus are provided. The method includes: generating, by a transmit end, a PPDU, where the PPDU includes a SIG-A indication field, and the SIG-A indication field includes at least one of a field used to indicate a number of SIG-A information symbols and a field used to indicate a SIG-A information bandwidth; and sending, by the transmit end, the PPDU. According to the method provided in this application, the transmit end may indicate different numbers of SIG-A information symbols and/or different SIG-A information bandwidths.

公开(公告)号：US12219543B2

公开(公告)日：2025-02-04

申请号：US17204071

申请日：2021-03-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yanchun Li ,  Mingjie Dong

IPC: H04W72/044 ,  H04W16/28 ,  H04W72/23

Abstract: This disclosure provides methods and apparatuses related to beam training for performing beamforming in wireless communications. In an implementation, an access point (AP) sends training configuration information to a plurality of stations, wherein the training configuration information comprises a first antenna configuration indicating a plurality of first uplink beams corresponding to the plurality of stations. The AP receives a plurality of training frame sent by each of the plurality of stations by using a corresponding second uplink beam and determines, based on the plurality of training frames sent by the plurality of stations, a plurality of third uplink beams for the plurality of stations to send uplink data.

公开(公告)号：US12114258B2

公开(公告)日：2024-10-08

申请号：US17730990

申请日：2022-04-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yanchun Li ,  Zhou Lan ,  Yunbo Li

IPC: H04W52/02 ,  H04W28/02 ,  H04W28/20 ,  H04W36/08 ,  H04W72/04 ,  H04W76/22 ,  H04W24/02

CPC classification number: H04W52/0206 ,  H04W28/0221 ,  H04W28/20 ,  H04W36/08 ,  H04W72/04 ,  H04W76/22 ,  H04W24/02 ,  Y02D30/70

Abstract: When performing data transmission with a first station in a bandwidth power saving mode by using an operating channel of the first station, an access point performs data transmission with a second station by using an operating channel of the second station. Therefore, even if the operating channel of the first station includes a primary channel, the access point can still perform data transmission with the second station by using another channel. Further, for the access point, although the operating channel of the first station occupies only a part of available bandwidth resources of the access point, the access point can still perform data transmission with the second station by using a remaining channel.

公开(公告)号：US20240064051A1

公开(公告)日：2024-02-22

申请号：US18501861

申请日：2023-11-03

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yanchun Li ,  Ganghua Yang ,  Merouane Debbah

IPC: H04L27/26 ,  H04B17/318 ,  H04L5/00

CPC classification number: H04L27/2613 ,  H04B17/318 ,  H04L5/0048

Abstract: A wireless transmitter is configured to generate a first pilot signal having a first signal strength profile over a first plurality of frequency sub-bands and a second pilot signal having a second signal strength profile over a second plurality of frequency sub-bands and to transmit the first pilot signal and the second pilot signal via the communication channel to the wireless receiver. The first plurality of frequency sub-bands and the second plurality of frequency sub-bands comprise at least three common frequency sub-bands, wherein the common frequency sub-bands comprise at least one central common frequency sub-band and two boundary common frequency sub-bands, wherein a respective signal strength of the at least one central common frequency sub-band is smaller than a respective signal strength of the two boundary common frequency sub-bands.

公开(公告)号：US11800375B2

公开(公告)日：2023-10-24

申请号：US17087756

申请日：2020-11-03

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yanchun Li

IPC: H04W16/28 ,  H04B7/06 ,  H04W64/00

CPC classification number: H04W16/28 ,  H04B7/0617 ,  H04W64/00

Abstract: Methods, devices, apparatus, and systems for beam training are provided. In one aspect, a beam training method includes: receiving, by a first device, a data frame that carries spatial location indication information of the first device and spatial location indication information of a second device and determining, by the first device based on the data frame, at least one of a transmit beam or a receive beam used for beam training between the first device and the second device.

公开(公告)号：US11728864B2

公开(公告)日：2023-08-15

申请号：US16925989

申请日：2020-07-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yanchun Li

IPC: H04B7/06 ,  H04B17/336 ,  H04B7/0417 ,  H04L1/1607 ,  H04W24/10 ,  H04W72/0453

CPC classification number: H04B7/0626 ,  H04B7/0417 ,  H04B7/0634 ,  H04B17/336 ,  H04L1/1614 ,  H04W24/10 ,  H04W72/0453

Abstract: A channel state information transmission method, where a responder receives a channel measurement signal sent by an initiator by using one or more transmit antennas, and the responder sends a feedback frame to the initiator based on the channel measurement signal. The feedback frame includes information used to indicate a transmit antenna subset of the initiator and one or more channel state information blocks of a channel between the corresponding transmit antenna subset of the initiator and the responder, where the transmit antenna subset is determined from one or more transmit antennas by using which a channel measurement signal is sent.

公开(公告)号：US11700668B2

公开(公告)日：2023-07-11

申请号：US17979593

申请日：2022-11-02

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yunbo Li ,  Yanchun Li ,  Yi Luo

IPC: H04W84/12 ,  H04J11/00 ,  H04W74/08

CPC classification number: H04W84/12 ,  H04W74/0858 ,  H04J2011/0016

Abstract: The present application provides a channel access process method in a wireless local area network. The method includes: generating, by a station, a backoff counter value; then performing, by the station, a backoff operation after receiving a first trigger frame, where the backoff operation includes: deducting, from the backoff counter value, a quantity N of subchannels for random access, to obtain a new backoff counter value; and when the new backoff counter value is 0 or a negative number, randomly selecting, by the station, one subchannel from the subchannels for random access, and then accessing the subchannel to send an uplink frame. The present application further provides a corresponding channel access apparatus. Applying the method and the apparatus of the embodiments of the present application improves system access efficiency and avoids a waste of system resources.