公开(公告)号：US10721768B2

公开(公告)日：2020-07-21

申请号：US16411961

申请日：2019-05-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yingpei Lin ,  Jiayin Zhang ,  Jun Luo ,  Le Liu

IPC: H04W74/04 ,  H04L29/06 ,  H04L5/00 ,  H04W72/04 ,  H04W48/12 ,  H04W48/00 ,  H04L27/26 ,  H04W84/12 ,  H04W88/08

Abstract: A method includes generating, by an access point (AP), signaling that includes an AP identifier (ID) field, a bandwidth (BW) field, a guard interval (GI) field, a cyclic redundancy check (CRC) field, and a tail field, the AP ID field is used to indicate an ID of the AP, the BW field is used to indicate bandwidth required for data transmission subsequent to the signaling, the GI is used to indicate a length of a cyclic prefix (CP) required for data transmission subsequent to the signaling, the CRC field is used to guard a field before the CRC field in the signaling, and the Tail field is used to empty an encoder and a decoder, where the CRC field and the Tail field are the last two fields of the signaling. The method also includes sending, by the AP, the signaling.

公开(公告)号：US10602542B2

公开(公告)日：2020-03-24

申请号：US16024165

申请日：2018-06-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hongjia Su ,  Yingpei Lin

IPC: H04L12/28 ,  H04W74/08 ,  H04W72/12 ,  H04W84/12 ,  H04W88/08

Abstract: A transmission opportunity determining method and an access point are provided, so as to implement a transmission opportunity determining method for multiuser transmission and further improve multiuser transmission efficiency. The method includes: determining, by an access point, transmission opportunity duration in which the access point performs frame transmission with at least two stations for a plurality of times; and after the access point performs backoff and obtains a channel through contention, and initially sends a downlink frame in the transmission opportunity duration, determining, by the access point, that the access point holds a transmission opportunity in the transmission opportunity duration.

公开(公告)号：US20200053737A1

公开(公告)日：2020-02-13

申请号：US16657740

申请日：2019-10-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yang Liu ,  Yingpei Lin ,  Shao-Yu Lien

IPC: H04W72/08 ,  H04W72/04 ,  H04B10/116 ,  H04B10/079

Abstract: This application relates to the field of communications technologies, and in particular, to a communication method in a directional communications system, and a receiver. The method of this application includes: receiving a request message; and performing directional channel listening in a direction facing a transmitter, and sending a response message if it is learned through the listening that a channel is available, or skipping sending the response message if otherwise. According to the method of this application, after receiving the request message, the receiver performs directional channel listening in the direction facing the transmitter.

公开(公告)号：US10425882B2

公开(公告)日：2019-09-24

申请号：US15421592

申请日：2017-02-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hongjia Su ,  Jun Zhu ,  Yingpei Lin

IPC: H04W48/16 ,  H04W4/70 ,  H04W8/00 ,  H04W88/08

Abstract: A device-to-device (D2S) station including a receiving module, configured to receive a first DDM that is broadcast by a neighboring station at a first preset power, where the first DDM includes user information of the neighboring station, an obtaining module, configured to obtain information about a link between the D2D station and the neighboring station according to the first DDM received by the receiving module, a time determining module, configured to determine, according to the information that is about the link between the D2D station and the neighboring station and obtained by the obtaining module, a time interval for broadcasting a second DDM, and a sending module, configured to broadcast, at a second preset power, the second DDM at the time interval determined by the time determining module.

公开(公告)号：US10405221B2

公开(公告)日：2019-09-03

申请号：US15357816

申请日：2016-11-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yi Luo ,  Xun Yang ,  Yingpei Lin

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

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：US10342042B2

公开(公告)日：2019-07-02

申请号：US15492053

申请日：2017-04-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yingpei Lin ,  Jiayin Zhang ,  Jun Luo ,  Le Liu

IPC: H04W74/04 ,  H04L29/06 ,  H04W72/04 ,  H04L5/00 ,  H04L27/26 ,  H04W84/12 ,  H04W88/08 ,  H04W48/12 ,  H04W48/00

Abstract: The method includes generating, by an access point (AP), signaling that includes an AP identifier (ID) field, a bandwidth (BW) field, a guard interval (GI) field, a cyclic redundancy check (CRC) field, and a tail field, the AP ID field is used to indicate an ID of the AP, the BW field is used to indicate bandwidth required for data transmission subsequent to the signaling, the GI is used to indicate a length of a cyclic prefix (CP) required for data transmission subsequent to the signaling, the CRC field is used to guard a field before the CRC field in the signaling, and the Tail field is used to empty an encoder and a decoder, where the CRC field and the Tail field are the last two fields of the signaling. The method also includes sending, by the AP, the signaling.

公开(公告)号：US20190165978A1

公开(公告)日：2019-05-30

申请号：US16264926

申请日：2019-02-01

Applicant: Huawei Technologies Co., Ltd.

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

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

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：US20190159038A1

公开(公告)日：2019-05-23

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 ,  H04W76/19 ,  H04W72/04 ,  H04B7/06 ,  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：US20180352577A1

公开(公告)日：2018-12-06

申请号：US15882439

申请日：2018-01-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jiayin Zhang ,  Lei Huang ,  Yingpei Lin ,  Yan Xin

IPC: H04W74/08 ,  H04W16/14 ,  H04B7/08

Abstract: A method and system for LBT or CCA threshold setting for directional reception and transmission are provided. In an embodiment, a method in a wireless device for determining if a channel is clear in an unlicensed band channel in a wireless network includes detecting, with the wireless device, an energy along a first beamforming direction. The method also includes determining, with the wireless device, an energy detection threshold. The method also includes determining, with the wireless device, whether the unlicensed band channel is clear in at least the first receiving direction according to the energy and the energy detection threshold.

公开(公告)号：US09967009B2

公开(公告)日：2018-05-08

申请号：US14975555

申请日：2015-12-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yingpei Lin ,  Jiayin Zhang ,  Yi Luo

IPC: H04W4/00 ,  H04B7/0456 ,  H04W72/04 ,  H04W4/06

CPC classification number: H04B7/0456 ,  H04W4/06 ,  H04W72/0413 ,  H04W72/0453

Abstract: The present invention discloses a data transmission method and apparatus. A first access point determines a current working uplink receiving beam, and broadcasts an identifier of the current working uplink receiving beam of the first access point, so that when a first station associated with the first access point determines, according to the identifier of the current working uplink receiving beam of the first access point, that a first transmitting beam at which the first station is currently working is the current working uplink receiving beam of the first access point, the first station performs data transmission with the first access point by using the first transmitting beam. The current working uplink receiving beam of the first access point and a current working uplink receiving beam of a second access point do not overlap in space.