公开(公告)号：US11888608B2

公开(公告)日：2024-01-30

申请号：US17696420

申请日：2022-03-16

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Tao Wu ,  Teyan Chen

IPC: H04L1/00 ,  H04L27/04 ,  H04L27/20

CPC classification number: H04L1/0003 ,  H04L27/04 ,  H04L27/20

Abstract: Embodiments of this application disclose a data transmission method, apparatus, and system in backscatter communication, to improve spectrum usage efficiency of data. An embodiment of this application provides a data transmission method in backscatter communication, including: generating a first frame, where the first frame carries first data and second data, the first data and the second data in the first frame use different modulation schemes, the first data is sent to a first tag, and the second data is sent to a second tag; and sending the first frame to the first tag and the second tag.

公开(公告)号：US11172372B2

公开(公告)日：2021-11-09

申请号：US16749477

申请日：2020-01-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Tao Wu ,  Teyan Chen

IPC: H04W16/14 ,  H04W16/28 ,  H04W24/10 ,  H04W48/16 ,  H04W72/08

Abstract: An information transmission method and apparatus, the method including determining, by a first communications apparatus, an area in which a terminal device is located, where the area includes overlapping coverage area between the first communications apparatus and at least one second communications apparatus, and, non-overlapping coverage area between the first communications apparatus and the at least one second communications apparatus, and the first communications apparatus is adjacent to the at least one second communications apparatus, and sending, by the first communications apparatus, information to the terminal device through a first channel if the terminal device is located in the overlapping coverage area, and sending, by the first communications apparatus, information to the terminal device through a second channel if the terminal device is located in the non-overlapping coverage areas.

公开(公告)号：US11018913B2

公开(公告)日：2021-05-25

申请号：US16588541

申请日：2019-09-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Tao Wu ,  Teyan Chen

IPC: H04L27/20 ,  H04L5/00 ,  H04L27/26 ,  H04L27/34 ,  H04L27/18

Abstract: This application provides a multichannel-based signal transmission method and apparatus. The method includes: combining N groups of lower-order modulation symbols into N groups of higher-order modulation symbols, where an ith higher-order modulation symbol in each group of higher-order modulation symbols is obtained by combining ith lower-order modulation symbols in all the N groups of lower-order modulation symbols, each group of lower-order modulation symbols includes M lower-order modulation symbols, i=1, 2, . . . , M, N is a positive integer greater than 1, and M is a positive integer greater than 1; determining N to-be-sent signals based on the N groups of higher-order modulation symbols; and sending a kth to-be-sent signal in the N to-be-sent signals by using a kth channel in N channels, where k=1, 2, . . . , N.

公开(公告)号：US20190149375A1

公开(公告)日：2019-05-16

申请号：US16246761

申请日：2019-01-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Tao Wu ,  Teyan Chen

IPC: H04L27/20

Abstract: This application provides a multichannel-based signal transmission method and apparatus. The method includes: combining N groups of lower-order modulation symbols into N groups of higher-order modulation symbols, where an ith higher-order modulation symbol in each group of higher-order modulation symbols is obtained by combining ith lower-order modulation symbols in all the N groups of lower-order modulation symbols, each group of lower-order modulation symbols includes M lower-order modulation symbols, i=1, 2, . . . , M, N is a positive integer greater than 1, and M is a positive integer greater than 1; determining N to-be-sent signals based on the N groups of higher-order modulation symbols; and sending a kth to-be-sent signal in the N to-be-sent signals by using a kth channel in N channels, where k=1, 2, . . . , N.

公开(公告)号：US10079666B2

公开(公告)日：2018-09-18

申请号：US15269313

申请日：2016-09-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Sheng Liu ,  Teyan Chen ,  Hong Cheng

IPC: H04J1/12 ,  H04L5/00 ,  H04B1/525

CPC classification number: H04L5/0073 ,  H04B1/525 ,  H04L5/005 ,  H04L5/14 ,  H04L5/1461

Abstract: Embodiments of the present invention provide an apparatus for self-interference cancellation. The apparatus includes: a first splitter, configured to perform splitting processing on a local oscillator signal generated by a local oscillator to separately transmit the local oscillator signal to an up-converter and a delayer; the up-converter, configured to perform up-conversion processing on a baseband transmit signal according to the local oscillator signal to generate a transmit signal; the delayer, configured to perform delaying processing on the local oscillator signal according to a preset target delay; a first down-converter, configured to perform, based on the local oscillator signal obtained after the delaying processing, down-conversion processing on a receive signal to acquire a baseband receive signal, and transmit the baseband receive signal to a self-interference canceller; and the self-interference canceller, configured to perform self-interference cancellation processing on the baseband receive signal.

公开(公告)号：US09819385B2

公开(公告)日：2017-11-14

申请号：US15337407

申请日：2016-10-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Sheng Liu ,  Teyan Chen ,  Hong Cheng

IPC: H04B1/525 ,  H04B15/00 ,  H04B5/02 ,  H04W56/00 ,  H04W88/02 ,  H04W88/08

CPC classification number: H04B1/525 ,  H04B5/02 ,  H04B15/00 ,  H04W56/0015 ,  H04W88/02 ,  H04W88/08

Abstract: A method for interference cancellation is provided. The method includes: determining, by a first base station, a channel parameter from a transmit antenna of a second base station to a receive antenna of the first base station; receiving, by the first base station, a first signal using a first resource, where the first signal includes: a first interference signal and an uplink wanted signal, and the first interference signal is an interference signal generated when a downlink second signal is sent by the second base station by using the first resource; receiving, by the first base station, reconstruction information that is of the second signal and that is sent by the second base station; and determining, by the first base station, the first interference signal in the first signal according to the channel parameter and the reconstruction information of the second signal, and canceling the first interference signal.