公开(公告)号：US12244447B2

公开(公告)日：2025-03-04

申请号：US18309575

申请日：2023-04-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Wei Lin ,  Xin Xue ,  Ningjuan Wang ,  Le Liu

IPC: H04W72/12 ,  H04L25/02 ,  H04L27/26 ,  H04W24/10 ,  H04W72/1268 ,  H04W72/23 ,  H04W84/12 ,  H04B7/0452

Abstract: An HE-LTF transmission method is provided, including: determining, based on a total number NSTS of space-time streams, a number NHELTF of OFDM symbols included in an HE-LTF field; determining a HE-LTF sequence in frequency domain according to a transmission bandwidth and a mode of the HE-LTF field, where the HE-LTF sequence in frequency domain includes but is not limited to a mode of the HE-LTF field sequence that is in a 1× mode and that is mentioned in implementations; and sending a time-domain signal according to the number NHELTF of OFDM symbols and the determined HE-LTF sequence in frequency domain. In the foregoing solution, a PAPR value is relatively low.

公开(公告)号：US11677606B2

公开(公告)日：2023-06-13

申请号：US17246182

申请日：2021-04-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wei Lin ,  Xin Xue ,  Ningjuan Wang ,  Le Liu

IPC: H04W72/12 ,  H04L27/26 ,  H04W84/12 ,  H04L25/02 ,  H04W72/23 ,  H04W24/10 ,  H04W72/1268 ,  H04B7/0452

CPC classification number: H04L27/2672 ,  H04L25/022 ,  H04L25/0226 ,  H04L27/261 ,  H04L27/2614 ,  H04W24/10 ,  H04W72/1268 ,  H04W72/23 ,  H04W84/12 ,  H04B7/0452 ,  H04L27/2601

Abstract: An HE-LTF transmission method is provided, including: determining, based on a total number NSTS of space-time streams, a number NHELTF of OFDM symbols included in an HE-LTF field; determining a HE-LTF sequence in frequency domain according to a transmission bandwidth and a mode of the HE-LTF field, where the HE-LTF sequence in frequency domain includes but is not limited to a mode of the HE-LTF field sequence that is in a 1× mode and that is mentioned in implementations; and sending a time-domain signal according to the number NHELTF of OFDM symbols and the determined HE-LTF sequence in frequency domain. In the foregoing solution, a PAPR value is relatively low.

公开(公告)号：US10999119B2

公开(公告)日：2021-05-04

申请号：US16870570

申请日：2020-05-08

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wei Lin ,  Xin Xue ,  Ningjuan Wang ,  Le Liu

IPC: H04W72/12 ,  H04L27/26 ,  H04W84/12 ,  H04L25/02 ,  H04W24/10 ,  H04B7/0452

Abstract: An HE-LTF transmission method is provided, including: determining, based on a total number NSTS of space-time streams, a number NHELTF of OFDM symbols included in an HE-LTF field; determining a HE-LTF sequence in frequency domain according to a transmission bandwidth and a mode of the HE-LTF field, where the HE-LTF sequence in frequency domain includes but is not limited to a mode of the HE-LTF field sequence that is in a 1× mode and that is mentioned in implementations; and sending a time-domain signal according to the number NHELTF of OFDM symbols and the determined HE-LTF sequence in frequency domain. In the foregoing solution, a PAPR value is relatively low.

公开(公告)号：US10735233B2

公开(公告)日：2020-08-04

申请号：US16017083

申请日：2018-06-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Genadiy Tsodik ,  Ningjuan Wang ,  Jian Yu ,  Xin Xue ,  Shimon Shilo ,  Doron Ezri ,  Oded Redlich ,  Le Liu ,  Wei Lin

IPC: H04B17/00 ,  H04L27/26 ,  H04L25/02

Abstract: The present application provides a method for determining a CP. A STA performs channel estimation, determines a CP value according to the result of channel estimation, and sends indication information to an AP, wherein the indication information is used for indicating the CP value, so that the AP may choose a suitable CP according to the indication information. Therefore, overhead may be reduced and system throughput may be optimized.

公开(公告)号：US20190245669A1

公开(公告)日：2019-08-08

申请号：US16390333

申请日：2019-04-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ningjuan Wang ,  Xin Xue ,  Min Yan ,  Jian Yu

IPC: H04L5/00 ,  H04W56/00 ,  H04L29/06 ,  H04B7/00 ,  H04B7/24

CPC classification number: H04L5/0053 ,  H04B7/00 ,  H04B7/24 ,  H04L65/4076 ,  H04W56/005 ,  H04W84/12

Abstract: An access device constructs a beacon frame, where the beacon frame includes a newly added field, and the newly added field represents multiple data guard interval lengths supported by the access device. The access device broadcasts the beacon frame, so that a terminal selects an available guard interval length matching a data guard interval length supported by the terminal from the beacon frame, and performs data communication with the access device by using the available guard interval length. Data communication between the access device and the terminal can be implemented when the access device supports multiple data guard interval lengths.

公开(公告)号：US20180331876A1

公开(公告)日：2018-11-15

申请号：US15987216

申请日：2018-05-23

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Wei Lin ,  Xin Xue ,  Ningjuan Wang ,  Le Liu

IPC: H04L27/26 ,  H04W72/12 ,  H04W24/10

Abstract: An HE-LTF transmission method is provided, including: determining, based on a total number NSTS of space-time streams, a number NHELTF of OFDM symbols included in an HE-LTF field; determining a HE-LTF sequence in frequency domain according to a transmission bandwidth and a mode of the HE-LTF field, where the HE-LTF sequence in frequency domain includes but is not limited to a mode of the HE-LTF field sequence that is in a 1× mode and that is mentioned in implementations; and sending a time-domain signal according to the number NHELTF of OFDM symbols and the determined HE-LTF sequence in frequency domain. In the foregoing solution, a PAPR value is relatively low.

公开(公告)号：US20180054329A1

公开(公告)日：2018-02-22

申请号：US15795577

申请日：2017-10-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Min Yan ,  Xin Xue

IPC: H04L25/02

CPC classification number: H04L25/0202 ,  H04B7/0413 ,  H04L25/0212 ,  H04L27/2613 ,  H04L27/2663 ,  H04L27/2692 ,  H04L27/2695

Abstract: A method includes receiving, by two receivers respectively, a first channel estimation sequence from a first transmitter and a second channel estimation sequence from a second transmitter, where the second channel estimation sequence is a sequence that is orthogonal to the first channel estimation sequence and an auto-correlation function is an impulse function when channels are estimated thereby signals obtained based on auto-correlation of the first channel estimation sequence and on auto-correlation of the second channel estimation sequence are impulse signals, and a convolution between the first channel estimation sequence and the second channel estimation sequence is 0.