公开(公告)号：US12120069B2

公开(公告)日：2024-10-15

申请号：US17949848

申请日：2022-09-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jingjing Huang ,  Ming Gan ,  Xin Zuo

IPC: H04L5/14 ,  H01Q9/04 ,  H04B1/10 ,  H04B1/12

CPC classification number: H04L5/1461 ,  H01Q9/0435 ,  H04B1/10 ,  H04B1/12 ,  H04L5/14

Abstract: This application provides a full-duplex self-interference weakening method and a full-duplex self-interference weakening system. The full-duplex self-interference weakening method includes: separately receiving, by a first port of a dual-polarized receive antenna and a second port of the dual-polarized receive antenna, a signal sent by a transmit antenna; and adjusting and combining the signal received by the first port of the dual-polarized receive antenna and/or the signal received by the second port of the dual-polarized receive antenna, to weaken interference caused by the transmit antenna to the dual-polarized receive antenna. The full-duplex self-interference weakening method and the full-duplex self-interference weakening system provided in this application resolve a problem that a quantity of antennas and an antenna location are limited in an existing antenna interference cancelation method.

公开(公告)号：US11483121B2

公开(公告)日：2022-10-25

申请号：US17072589

申请日：2020-10-16

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jingjing Huang ,  Ming Gan ,  Xin Zuo

IPC: H04L5/14 ,  H04B1/12

Abstract: This application provides a full-duplex self-interference weakening method and a full-duplex self-interference weakening system. The full-duplex self-interference weakening method includes: separately receiving, by a first port of a dual-polarized receive antenna and a second port of the dual-polarized receive antenna, a signal sent by a transmit antenna and adjusting and combining the signal received by the first port of the dual-polarized receive antenna and/or the signal received by the second port of the dual-polarized receive antenna, to weaken interference caused by the transmit antenna to the dual-polarized receive antenna. The full-duplex self-interference weakening method and the full-duplex self-interference weakening system provided in this application resolve a problem that a quantity of antennas and an antenna location are limited in an existing antenna interference cancelation method.

公开(公告)号：US11882604B2

公开(公告)日：2024-01-23

申请号：US17329882

申请日：2021-05-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jun Chen ,  Peng Liu ,  Jingjing Huang ,  Guangjian Wang

IPC: H04W74/08 ,  H04B7/185 ,  H04W56/00 ,  H04W84/06

CPC classification number: H04W74/0833 ,  H04B7/18543 ,  H04B7/18589 ,  H04W56/009 ,  H04W84/06

Abstract: This application provides a random access method and apparatus applicable to satellite communication. The method includes: obtaining a round-trip transmission latency tRTD of a signal between a terminal device and a satellite; obtaining a random access parameter based on the tRTD, where the random access parameter includes one or more of: a duration between a moment at which the terminal device sends a random access preamble and a moment at which the terminal device starts to receive a random access response RAR, a duration of a window in which the terminal device receives the RAR, a duration between a moment at which the terminal device stops receiving the RAR and a moment at which the terminal device sends the random access preamble again, and a subframe duration; and receiving, by the terminal device the RAR based on the random access parameter.

公开(公告)号：US20210360556A1

公开(公告)日：2021-11-18

申请号：US17390317

申请日：2021-07-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Peng Liu ,  Jun Chen ,  Jingjing Huang ,  Guangjian Wang

IPC: H04W56/00

Abstract: A timing advance update method and device, where the method includes: A terminal obtains a transmission delay variation, where the transmission delay variation is a delay variation of transmission between the terminal and a network device; the terminal determines a new timing advance based on the transmission delay variation, a current timing advance, and a timing advance critical value, where the timing advance of the terminal is not greater than the timing advance critical value; and the terminal performs uplink transmission based on the new timing advance.

公开(公告)号：US11757520B2

公开(公告)日：2023-09-12

申请号：US17508634

申请日：2021-10-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jingjing Huang ,  Jun Chen ,  Peng Liu ,  Qianfu Cheng ,  Guangjian Wang

IPC: H04B7/10 ,  H01Q21/24 ,  H01Q25/00 ,  H04B7/155

CPC classification number: H04B7/10 ,  H01Q21/245 ,  H01Q25/001 ,  H04B7/1555

Abstract: A polarization reconfigurable apparatus, a communications device, and a polarization reconfiguration method, the apparatus including a signal generation unit, a signal adjustment unit, a digital-to-analog conversion unit, and a transmission unit that are sequentially connected. A signal transmitted by a first port in the transmission unit is orthogonal to a signal transmitted by a second port in the transmission unit. The signal generation unit is configured to generate a first signal. The signal adjustment unit is configured to determine a polarization mode of a to-be-transmitted signal, divide the first signal into two first signals, and adjust an amplitude and a phase of a 1st first signal and an amplitude and a phase of a 2nd first signal based on the determined polarization mode.

公开(公告)号：US11711778B2

公开(公告)日：2023-07-25

申请号：US17487679

申请日：2021-09-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Peng Liu ,  Jun Chen ,  Jingjing Huang ,  Guangjian Wang

IPC: H04W56/00 ,  H04W36/00 ,  H04W84/06

CPC classification number: H04W56/009 ,  H04W36/00837 ,  H04W56/001 ,  H04W84/06

Abstract: This application provides methods and apparatuses for uplink timing synchronization. The method includes: determining, based on beam information of a first beam and ephemeris information of the satellite base station, an uplink timing frame number of a first cell corresponding to the first beam; determining timing information of a first terminal device in the first cell based on the uplink timing frame number of the first cell, where the timing information is used to indicate a timing advance or a timing lag; and outputting the timing information.

公开(公告)号：US20230084731A1

公开(公告)日：2023-03-16

申请号：US17986406

申请日：2022-11-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xu Li ,  Jingjing Huang ,  Junping Zhang

IPC: H04L27/26 ,  H04L5/00

Abstract: This application provides a signal transmission method and apparatus. The method includes: obtaining, by a transmitter side, a first signal with N points; performing signal separation on the first signal with N points, to obtain two groups of signals (for example, a second signal with N points and a third signal with N points); combining the two groups of signals obtained through separation, to obtain a to-be-sent signal with 3N/2 points; and sending the signal with 3N/2 points to a receiver side, to enable the receiver to restore the first signal with N points from the received signal with 3N/2 points.

公开(公告)号：US20230078953A1

公开(公告)日：2023-03-16

申请号：US17986492

申请日：2022-11-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xu Li ,  Jingjing Huang ,  Jiajin Luo

IPC: H04B10/116 ,  H04B10/516

Abstract: This application provides a signal transmission method and apparatus. The method includes: obtaining, by a transmitter side, a first signal with N points; performing signal separation on the first signal with N points, to obtain two groups of signals (for example, a second signal with N points and a third signal with N points); determining four signals with N/2 points based on the two groups of signals obtained through separation, and combining the four signals with N/2 points, to obtain a to-be-sent signal with 3N/2 points; and sending the signal with 3N/2 points to a receiver side, to enable the receiver to restore the first signal with N points from the received signal with 3N/2 points.

公开(公告)号：US11496190B2

公开(公告)日：2022-11-08

申请号：US17012263

申请日：2020-09-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ming Gan ,  Jingjing Huang ,  Dandan Liang ,  Tao Wu

IPC: H04B7/0491 ,  H04B7/06 ,  H04B7/08 ,  H04L5/14

Abstract: This application provides a full-duplex communication method and an apparatus. The method includes: when sending a first signal to a first device by using a first transmit sector, receiving, by a third device by using a first receive sector, a second signal sent by a second device. A coverage area of the third device in a receiving direction may be divided into at least one receive sector, the at least one receive sector forms one receive sector group, and the third device may receive the second signal by using the first receive sector that is in the receive sector group and that is different from the first transmit sector. In this way, the third device can simultaneously receive a signal and send a signal by using different sectors, to implement full-duplex transmission, and reduce mutual interference between signal sending and signal receiving, thereby improving communication quality of the full-duplex transmission.

公开(公告)号：US11239870B2

公开(公告)日：2022-02-01

申请号：US17321287

申请日：2021-05-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yibo Lv ,  Xu Li ,  Guangjian Wang ,  Jingjing Huang

IPC: H04B1/04 ,  H04B7/06 ,  H04B7/0413

Abstract: This application relates to the field of communications technologies and discloses a transmitter device and a signal processing method. m transmit antenna groups of the transmitter are configured to send m training signals under control of the processor. A target feedback antenna of the transmitter is configured to receive, under control of the processor, a first mixed signal obtained by superimposing the m training signals in space, where a phase difference between the first mixed signal and a second mixed signal obtained by superimposing in space the m training signals received by a receiver device falls within a preset range. A processor of the transmitter is configured to: perform DPD parameter estimation and pre-distortion processing on a to-be-sent signal. The m transmit antenna groups are further configured to send, under control of the processor, the to-be-sent signal on which pre-distortion processing has been performed.