公开(公告)号：US20230024310A1

公开(公告)日：2023-01-26

申请号：US17948871

申请日：2022-09-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jiayin Zhang ,  Jun Zhu ,  Yingpei Lin ,  Xun Yang

IPC: H04W72/12 ,  H04W74/00

Abstract: A method comprises constructing, by an access point (AP), a radio frame within a scheduling window, the radio frame including at least a preamble part compatible with an existing IEEE 802.11 preamble legacy preamble, a preamble part used in a next-generation IEEE 802.11 standard (HEW preamble), and the first downlink subframe (DL subframe); sending the Legacy preamble, the HEW preamble and the first DL subframe in the radio frame; receiving at least one uplink subframe (UL subframe) located after the first DL subframe; wherein each of the at least one UL subframes is triggered by one DL subframe located before the UL subframe.

公开(公告)号：US11310722B2

公开(公告)日：2022-04-19

申请号：US17005037

申请日：2020-08-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Pei Zhou ,  Yan Long ,  Xiao Han ,  Yingpei Lin

IPC: H04W48/10 ,  H04L5/00 ,  H04B7/06 ,  H04W16/28 ,  H04W72/04 ,  H04W74/08 ,  H04W48/12 ,  H04W84/12

Abstract: Embodiments of this application provide an information transmission method, a network device, and a user equipment. The method provided in this application includes: sending, by a network device, a broadcast frame that includes first duration information and second duration information that are of A-BFT (Association Beamforming Training); receiving a frame sent by a first user equipment in a timeslot randomly selected from a first time range; and receiving a frame sent by a second user equipment in a timeslot randomly selected from a second time range. According to the embodiments of this application, beamforming training efficiency can be improved.

公开(公告)号：US11284283B2

公开(公告)日：2022-03-22

申请号：US16526067

申请日：2019-07-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yi Luo ,  Xun Yang ,  Yingpei Lin

IPC: H04W24/10 ,  H04W76/40 ,  H04W72/12 ,  H04W74/00 ,  H04B7/0452 ,  H04J13/00 ,  H04L27/26 ,  H04W74/08

Abstract: An uplink multi-user multi-input multi-output establishment method includes broadcasting, by a network side device, an uplink data sending announcement; receiving buffer information sent by a terminal that needs to send data, where the buffer information includes at least a sending level and a data sending length of to-be-sent data; determining, according to the buffer information, scheduling information for establishing uplink multi-user multi-input multi-output; and sending, to a terminal that is allowed to send data and selected from the terminal that needs to send data, a clear to send frame that carries the scheduling information, so that the terminal that is allowed to send data sends the to-be-sent data according to the scheduling information. The embodiments of the present disclosure effectively implement uplink multi-user multi-input multi-output establishment, so that signaling interworking is reduced, resource overheads are reduced, and data sending efficiency is improved.

公开(公告)号：US11212148B2

公开(公告)日：2021-12-28

申请号：US16819516

申请日：2020-03-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jiayin Zhang ,  Jun Zhu ,  Yalin Liu ,  Yingpei Lin

IPC: H04L27/26 ,  H04L29/06 ,  H04L5/00 ,  H04W84/12

Abstract: A method includes generating a preamble for a protocol version of a wireless local area network, where the preamble includes a legacy signal L-SIG field and a high efficiency signal HE-SIG field that are arranged in order, the HE-SIG field includes a first orthogonal frequency division multiplexing OFDM symbol and a second OFDM symbol that are arranged in order, and an input information bit of the first OFDM symbol is the same as that of the second OFDM symbol, and sending the preamble to a receive end device, so that the receive end device restores the preamble, and when determining that input information bits obtained after restoring the first OFDM symbol and the second OFDM symbol are the same, determines that the preamble is the preamble of the protocol version.

公开(公告)号：US11082923B2

公开(公告)日：2021-08-03

申请号：US16690649

申请日：2019-11-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yingpei Lin ,  Hongjia Su ,  Jun Zhu

IPC: H04W52/02 ,  H04L29/06 ,  H04W4/00 ,  H04W72/04 ,  H04W8/14 ,  H04W84/12

Abstract: Embodiments provide a method for direct communication between stations in a wireless local area network and a related station. The method for direct communication between stations in a wireless local area network includes: sending, by a first station, a data frame to a second station, where the data frame includes a first high-efficiency signal field, and the first high-efficiency signal field includes first indication information used to indicate that the data frame is a single-user (SU) data frame and second indication information used to indicate that the data frame is a downlink (DL) data frame.

公开(公告)号：US11044751B2

公开(公告)日：2021-06-22

申请号：US16565437

申请日：2019-09-09

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Lei Huang ,  Yingpei Lin ,  Jiayin Zhang

IPC: H04W74/08 ,  H04W72/04 ,  H04W16/14

Abstract: A channel access method is provided. Under the method, a network element performs random backoff listen before talk (LBT) for channel preemption, and after the preemption succeeds, performs signal transmission in the first transmission time interval TTI within a maximum channel occupancy time MCOT. The network element also performs nonrandom backoff LBT for channel preemption before another at least one TTI within the maximum channel occupancy time MCOT. This is to ensure coexistence and performance of systems when an LBT requirement of a high unlicensed frequency band is met.

公开(公告)号：US10932140B2

公开(公告)日：2021-02-23

申请号：US16252473

申请日：2019-01-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kaili Xu ,  Kaijun Cheng ,  Ji Wu ,  Yingpei Lin

IPC: H04W16/28 ,  H04W24/04 ,  H04W76/19 ,  H04B7/06 ,  H04W72/04 ,  H04W74/08

Abstract: Embodiments of this application provide a link restoration method and apparatus, and a device. The method includes: if quality of a link between a first communications device and a second communications device does not meet a preset condition, detecting, by the first communications device within timing duration of a first timer, whether the link is restored, and obtaining a detection result, where the timing duration of the first timer is blockage duration of a link blockage resulting from a user movement; and determining, by the first communications device based on the detection result, whether to perform a link restoration operation, where the link restoration operation includes at least one of a beam tracking operation, a beam refinement operation, or a redo-beamforming operation.

公开(公告)号：US10652777B2

公开(公告)日：2020-05-12

申请号：US16119324

申请日：2018-08-31

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Kun Zeng ,  Guangjian Wang ,  Yingpei Lin ,  Yan Xin

IPC: H04W28/02 ,  H04B7/06 ,  H04W24/02 ,  H04B7/0408 ,  H04B7/08 ,  H04W16/28

Abstract: A directional link maintenance method and a station STA to improve accuracy and timeliness of directional link availability determined by the STA are described. In at least one embodiment, the method includes monitoring, by a first station STA, an information packet, where the information packet carries first identification information, and the first identification information is used to identify a first directional transmit beam that is used a second STA when the second STA sends the information packet; determining, by the first STA, whether the information packet is an information packet that is sent by the second STA to a third STA, and obtaining the first identification information if the information packet is an information packet that is sent by the second STA to the third STA; and determining, by the first STA, whether the first identification information matches preset second identification information.

公开(公告)号：US10200225B2

公开(公告)日：2019-02-05

申请号：US15473269

申请日：2017-03-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jiayin Zhang ,  Jun Zhu ,  Yalin Liu ,  Yingpei Lin

IPC: H04L27/26 ,  H04L29/06 ,  H04L5/00 ,  H04W84/12

Abstract: A method includes generating a preamble for a protocol version of a wireless local area network, where the preamble includes a legacy signal L-SIG field and a high efficiency signal HE-SIG field that are arranged in order, the HE-SIG field includes a first orthogonal frequency division multiplexing OFDM symbol and a second OFDM symbol that are arranged in order, and an input information bit of the first OFDM symbol is the same as that of the second OFDM symbol, and sending the preamble to a receive end device, so that the receive end device restores the preamble, and when determining that input information bits obtained after restoring the first OFDM symbol and the second OFDM symbol are the same, determines that the preamble is the preamble of the protocol version.

公开(公告)号：US09801220B2

公开(公告)日：2017-10-24

申请号：US14966974

申请日：2015-12-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yunbo Li ,  Yingpei Lin

IPC: H04W76/02 ,  H04W8/00

CPC classification number: H04W76/023 ,  H04W8/005 ,  H04W76/11 ,  H04W76/14

Abstract: The present invention discloses a method, a device and a system for device to device D2D data transmission. The method includes: monitoring, by a first station in a sleep state, a beacon frame broadcast by an access point AP, setting up a direct link with a second station when it is determined that the beacon frame has a buffer information indication indicating that the second station needs to transmit data, and then receiving the data transmitted by the second station. The method and the device disclosed in the present invention aim to solve a problem of larger signaling overheads during setup of an existing D2D direct link.