公开(公告)号：US20230180129A1

公开(公告)日：2023-06-08

申请号：US18062978

申请日：2022-12-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Wei Lin ,  Le Liu ,  Jun Zhu ,  Weishan Lu

IPC: H04W52/02 ,  H04L5/00 ,  H04L27/26

CPC classification number: H04W52/0229 ,  H04L5/0048 ,  H04L27/2613 ,  H04L5/0053 ,  Y02D30/70 ,  H04L27/2603 ,  H04L27/26132 ,  H04W84/12

Abstract: The disclosure discloses a high-efficiency short training field sequence generation method, a signal sending method, a signal receiving method, and related apparatuses, where the high-efficiency short training sequence generation method includes: increasing frequency domain density of a frequency domain sequence corresponding to a first high-efficiency short training field sequence to generate a frequency domain sequence with increased frequency domain density; generating a second high-efficiency short training field sequence according to the frequency domain sequence with increased frequency domain density; and using the second high-efficiency short training field sequence as a high-efficiency short training field sequence in a preamble sequence of a data transmission frame in a wireless local area network WLAN. In embodiments of the disclosure, a cycle of a high-efficiency short training field sequence used for performing stage-2 AGC adjustment in the WLAN may be increased, and a maximum CSD value that can be used is further increased.

公开(公告)号：US11297648B2

公开(公告)日：2022-04-05

申请号：US16930473

申请日：2020-07-16

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Qiong Jia ,  Jun Zhu ,  Ji Wu ,  Kwang-Cheng Chen

IPC: H04W74/08 ,  H04L5/00 ,  H04W16/14

Abstract: The application discloses a wireless communication method that includes receiving, by a network device, uplink transmission of a first terminal in a first duration of channel occupancy duration of the first terminal. The channel occupancy duration of the first terminal further includes a second duration, and the second duration is later than the first duration. The network device performs downlink transmission in the second duration, where the sum of the first duration and the second duration is less than or equal to the channel occupancy duration of the first terminal. The method provides an efficient use of resources obtained through contention in an unlicensed frequency band.

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：US10944531B2

公开(公告)日：2021-03-09

申请号：US16362603

申请日：2019-03-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Meilu Lin ,  Ming Gan ,  Le Liu ,  Jun Zhu ,  Jian Yu

IPC: H04L5/00 ,  H04W28/06 ,  H04W28/18 ,  H04W72/12 ,  H04W84/12 ,  H04W72/04 ,  H04W74/00

Abstract: A method for sending a wireless local area network packet structure is provided, and the method comprises: determining a packet structure, where the packet structure comprises an HE-SIGA and an HE-SIGB, the HE-SIGA comprises an indication information, and if a current transmission mode is a full bandwidth MU-MIMO transmission, the indication information is used to indicate a number of scheduled users, or if the current transmission mode is other transmission mode, the indication information is used to indicate a number of symbols in the HE-SIGB; and sending the packet structure.

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：US10827527B2

公开(公告)日：2020-11-03

申请号：US16124876

申请日：2018-09-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yalin Liu ,  Jun Zhu ,  Jiayin Zhang ,  Tianyu Wu

IPC: H04W72/04 ,  H04W74/08 ,  H04W72/12 ,  H04W88/02

Abstract: Embodiments provide a channel contention method and apparatus. The channel contention apparatus belongs to a basic service set (BSS). The BSS includes an access point (AP) and at least one first station (STA). Both the AP and the at least one first STA participate in channel contention. The apparatus is the AP or any first STA. The apparatus includes a sensing module configured to sense a channel. The apparatus also includes a contention module configured to contend for the channel. The AP centrally performs control and scheduling so that all of at least one network device in the BSS can transmit data using the channel.

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：US20200077276A1

公开(公告)日：2020-03-05

申请号：US16679877

申请日：2019-11-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jun Zhu ,  Jiyong Pang

IPC: H04W16/14 ,  H04W72/04 ,  H04L5/00 ,  H04L27/26 ,  H04W56/00

Abstract: A signal transmission method and apparatus, the method including obtaining, by a network device, an end moment of first downlink transmission, where the first downlink transmission occupies at least one of one or more downlink subframes, a downlink transmission part of a self-contained subframe, or a combination of one or more downlink subframes and a downlink transmission part of a self-contained subframe, and performing, by the network device, second downlink transmission in an unlicensed frequency band after a first guard period from the end moment of the first downlink transmission, where at least one terminal device senses a channel in the first guard period, and the second downlink transmission is used to reserve the channel for the at least one terminal device.

公开(公告)号：US10454737B2

公开(公告)日：2019-10-22

申请号：US16381126

申请日：2019-04-11

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhengzheng Xiang ,  Jun Zhu ,  Jiayin Zhang ,  Jiyong Pang

IPC: H04L27/26 ,  H04L5/00 ,  H04W28/06 ,  H04L25/02 ,  H04W84/12

Abstract: Information transmission methods and apparatuses in a wireless local area network are provided. One example method includes generating a legacy signaling field (L-SIG) and a repeated legacy signaling field (RL-SIG), where subcarriers with indexes −28, −27, 27, and 28 in the L-SIG and the RL-SIG in a 20 MHz bandwidth carry −1, −1, −1, and 1, respectively. The method also includes sending the generated L-SIG and RL-SIG.