公开(公告)号：US11277865B2

公开(公告)日：2022-03-15

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 ,  H04B7/08 ,  H04W16/14 ,  H04W16/28

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：US11122578B2

公开(公告)日：2021-09-14

申请号：US15956952

申请日：2018-04-19

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jun Zhu ,  Yingpei Lin ,  Jun Luo ,  Jiyong Pang

IPC: H04W72/08 ,  H04J11/00 ,  H04L5/00 ,  H04B7/06 ,  H04W52/00 ,  H04B7/02 ,  H04W72/04 ,  H04W74/08 ,  H04W92/10

Abstract: The present invention discloses a data transmission method and apparatus. The method includes: generating, by the primary access point, spatial reuse transmission signaling, the spatial reuse transmission signaling is used to indicate a reuse transmission device of the spatial reuse link to perform data transmission based on the spatial reuse link according to the spatial reuse transmission signaling; sending, by the primary access point, the spatial reuse transmission signaling. According to the data transmission method and apparatus in embodiments of the present invention, mutual interference between the primary link and the spatial reuse link during data transmission can be reduced, and transmission quality can be improved.

公开(公告)号：US11012123B2

公开(公告)日：2021-05-18

申请号：US16278404

申请日：2019-02-18

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Li Yan ,  Yan Long ,  Ji Wu ,  Yingpei Lin

IPC: H04B7/06 ,  H04B7/0452 ,  H04B7/08

Abstract: Embodiments of this application provide a beamforming training method, an initiating device, and a responding device. The method includes: transmitting, by an initiating device, codeword indication information to each responding device in a plurality of responding devices, where codeword indication information received by a first responding device in the plurality of responding devices is used to indicate a first codeword assigned by the initiating device to the first responding device, the first codeword is used to encode a beamforming training signal transmitted between the initiating device and the first responding device, and codewords assigned to different responding devices in the plurality of responding devices are orthogonal to each other; and performing, by the initiating device, beamforming training simultaneously with the plurality of responding devices based on a plurality of codewords assigned to the plurality of responding devices.

公开(公告)号：US10863501B2

公开(公告)日：2020-12-08

申请号：US16010513

申请日：2018-06-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Hongjia Su ,  Jun Zhu ,  Yingpei Lin ,  Dengyu Qiao

IPC: H04W72/04 ,  H04W76/14 ,  H04W88/08 ,  H04W92/18

Abstract: The present invention provides a device-to-device communication method, an access point, and a first station, to reduce channel contention overheads of device-to-device communication, and improve a system throughput rate. The method includes: determining, by an access point, a time window used for device-to-device communication between stations; and sending, by the access point, a downlink frame including the time window, where the downlink frame is configured to instruct a station having a device-to-device communication capability to perform device-to-device communication within the time window.

公开(公告)号：US20200287764A1

公开(公告)日：2020-09-10

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

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：US20200236597A1

公开(公告)日：2020-07-23

申请号：US16842792

申请日：2020-04-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Hongjia Su ,  Jun Zhu ,  Yingpei Lin

IPC: H04W36/00 ,  H04W74/08 ,  H04W36/08 ,  H04W36/34 ,  H04W72/04 ,  H04W74/04

Abstract: In various embodiments, an access point sends a first frame. The first frame carries a TXOP handover enforcement THE indication field which is a first value or a second value. The first value instructs a station that has accessed a channel to hand over a held TXOP to the access point, and the second value instructs the station that has accessed the channel to hand over the held TXOP to the access point when a handover condition is satisfied. It can be learned that the STA hands over the held TXOP to the AP. Therefore, the AP may be a TXOP holder through the TXOP handover even if the AP fails to obtain the channel through contention, so that a probability of holding the TXOP by the AP is improved, a probability of scheduling a STA by the AP is improved, and system resource utilization is improved.

公开(公告)号：US10536872B2

公开(公告)日：2020-01-14

申请号：US16039083

申请日：2018-07-18

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ji Wu ,  Yingpei Lin

IPC: H04W24/10 ,  H04B17/345 ,  H04W72/04 ,  H04W72/08 ,  H04W92/20

Abstract: Embodiments of the present invention provide a method which includes: sending a first channel quality measurement report, wherein the first channel quality measurement report indicates a channel noise value measured in a first time period by a first station in a second antenna mode when a third station and a fourth station communicate with each other in a first antenna mode; and receiving an grant frame sent by the AP based on the first channel quality measurement report, wherein the grant frame carries first instruction information and/or second instruction information. A success rate of space-shared communication between station pairs can be increased.

公开(公告)号：US20190281626A1

公开(公告)日：2019-09-12

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

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：US20190246348A1

公开(公告)日：2019-08-08

申请号：US16386415

申请日：2019-04-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yingpei Lin ,  Jiayin Zhang ,  Xun Yang

IPC: H04W48/20 ,  H04W24/02 ,  H04W74/08 ,  H04W72/12 ,  H04B17/318 ,  H04L5/00 ,  H04W40/24

CPC classification number: H04W48/20 ,  H04B17/318 ,  H04L5/006 ,  H04W24/02 ,  H04W40/244 ,  H04W72/1226 ,  H04W74/0816 ,  H04W84/12 ,  H04W88/02 ,  H04W88/08

Abstract: Embodiments provide a method for accessing an access point by a station device, a device, and a system. A station device selects a master access point from multiple access points according to channel quality and accesses the master access point, and sends information about remaining access points to the master access point, so that the master access point selects a slave access point according to the information about the remaining access points. In this way, the master access point coordinates with the slave access point to perform data transmission with the station device.

公开(公告)号：US20160366699A1

公开(公告)日：2016-12-15

申请号：US15249795

申请日：2016-08-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04W72/12

CPC classification number: H04W72/1273 ,  H04W74/00 ,  H04W84/12

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.

Abstract translation: 一种方法包括由接入点（AP）构建调度窗口内的无线电帧，所述无线电帧至少包括与现有的IEEE 802.11前导码前导码兼容的前导码部分，在下一代IEEE中使用的前导码部分 802.11标准（HEW前导码）和第一下行链路子帧（DL子帧）; 在无线电帧中发送遗留前导码，HEW前导码和第一DL子帧; 接收位于所述第一DL子帧之后的至少一个上行链路子帧（UL子帧）; 其中所述至少一个UL子帧中的每一个由位于所述UL子帧之前的一个DL子帧触发。