公开(公告)号：US20210328849A1

公开(公告)日：2021-10-21

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

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：US20180367276A1

公开(公告)日：2018-12-20

申请号：US16115296

申请日：2018-08-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xin XUE ,  Ju CAO ,  Le LIU ,  Ningjuan WANG ,  Wei LIN

IPC: H04L5/00 ,  H04L27/26 ,  H04B7/0452

CPC classification number: H04L5/0048 ,  H04B7/0452 ,  H04L25/03866 ,  H04L27/261 ,  H04L27/2613 ,  H04L27/2614 ,  H04L27/262

Abstract: A pilot sequence sending method and apparatus are provided. In the disclosure, after first-time masking is performed on a pilot sequence based on a cyclic orthogonal matrix, second-time masking is performed on the pilot sequence on which first-time masking has been performed, so that a PAPR of the pilot sequence on which second-time masking has been performed is less than a PAPR of the pilot sequence on which first-time masking has been performed, and further, orthogonality of the pilot sequence on which second-time masking has been performed can be higher than that of the pilot sequence on which first-time masking has been performed. This ensures accuracy of channel estimation and frequency offset detection.

公开(公告)号：US20200344104A1

公开(公告)日：2020-10-29

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

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：US20180309607A1

公开(公告)日：2018-10-25

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: 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：US20170201364A1

公开(公告)日：2017-07-13

申请号：US15468593

申请日：2017-03-24

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ningjuan WANG ,  Xin XUE ,  Min YAN ,  Jian YU

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

Abstract: A data communication method and a related apparatus are provided, and the data communication method includes: constructing, by an access device, 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; and broadcasting, by the access device, 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. By using the present invention, data communication between the access device and the terminal can be implemented when the access device supports multiple data guard interval lengths.