公开(公告)号：US11695609B2

公开(公告)日：2023-07-04

申请号：US17514562

申请日：2021-10-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaolu Wang ,  Hejia Luo ,  Rong Li ,  Bin Wang ,  Jun Wang

IPC: H04L27/26

CPC classification number: H04L27/2621 ,  H04L27/265 ,  H04L27/2628

Abstract: A side information transmission method and apparatus, where data to be transmitted by a transmit end includes at least one first data sub-block and at least one second data sub-block. A first modulated signal is obtained based on a first phase rotation factor. A second modulated signal is obtained based on a second phase rotation factor. Side information is generated based on the first phase rotation factor and the second phase rotation factor. The first data sub-block is carried on a first subcarrier, and the side information is also mapped to the first carrier. The first modulated signal corresponding to the at least one first data sub-block, the second modulated signal corresponding to the at least one second data sub-block, and a modulated signal corresponding to the side information are superposed to obtain a to-be-transmitted signal.

公开(公告)号：US20230139924A1

公开(公告)日：2023-05-04

申请号：US18148438

申请日：2022-12-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yunfei Qiao ,  Xiaolu Wang ,  Rong Li

IPC: H04W36/08 ,  H04W36/00 ,  H04W36/30

Abstract: A cell selection method and apparatus. The method includes receiving, by a terminal, a handover command, where the handover command includes indication information indicating a polarization direction of a target cell to be accessed by the terminal, performing, by the terminal, cell handover based on the handover command.

公开(公告)号：US20220376743A1

公开(公告)日：2022-11-24

申请号：US17882200

申请日：2022-08-05

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ying Chen ,  Jianwei Zhou ,  Hejia Luo ,  Xiaolu Wang ,  Rong Li ,  Jun Wang

IPC: H04B7/01 ,  H04W56/00 ,  H04L5/00

Abstract: This application discloses a frequency compensation method and apparatus, to improve performance of frequency compensation. The method includes: determining a change rate of a Doppler frequency shift value based on a weighted change rate of a change rate of a timing advance TA, determining the Doppler frequency shift value based on the change rate of the Doppler frequency shift value, and performing frequency compensation based on the determined Doppler frequency shift value; or determining a frequency offset value based on the Doppler frequency shift value with reference to pre-compensation and based on a reference signal, to further determine a frequency offset value, and performing frequency compensation based on the frequency offset value.

公开(公告)号：US12302404B2

公开(公告)日：2025-05-13

申请号：US17707299

申请日：2022-03-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiaolu Wang ,  Hejia Luo ,  Chenlei Xu ,  Jianwei Zhou ,  Rong Li

IPC: H04W74/0833 ,  H04L43/0864 ,  H04W74/00 ,  H04W74/08 ,  H04W72/23

Abstract: This disclosure provides data processing methods. One example including a network device obtains target information that includes a transmission delay difference corresponding to a target beam or a target cell; determines a first preamble format based on the transmission delay difference, and then determines first configuration information used to indicate the first preamble format and a first set of random access occasions included in a random access period, where an interval between random access times included in the first set of random access occasions is greater than or equal to a preamble length corresponding to the first preamble format; and generates a corresponding first configuration index based on the first configuration information. The preamble formats required for different beams or cells can be determined based on transmission delay differences corresponding to the different beams or cells, and then configuration information of a random access occasion is further determined.

公开(公告)号：US12279317B2

公开(公告)日：2025-04-15

申请号：US17832880

申请日：2022-06-06

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiaolu Wang ,  Hejia Luo ,  Jianwei Zhou ,  Chenlei Xu ,  Bin Wang ,  Rong Li

IPC: H04W74/0833 ,  H04B7/01 ,  H04W72/0446 ,  H04W72/0453 ,  H04W74/08 ,  H04W84/06

Abstract: The present disclosure relates to random access preamble transmission methods, apparatuses, and storage mediums. In one example method, a terminal device determines, based on a target sub-coverage area to which the terminal device belongs in a preset coverage area of a network device, target random access preamble format information corresponding to the target sub-coverage area. Then, the terminal device sends, to the network device on a target time-frequency resource indicated by target random access preamble time-frequency resource information corresponding to the target random access preamble format information, a random access preamble corresponding to the target random access preamble format information.

公开(公告)号：US12273739B2

公开(公告)日：2025-04-08

申请号：US17736447

申请日：2022-05-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yu Wang ,  Hejia Luo ,  Xiaolu Wang

IPC: H04W16/28 ,  H04W72/044 ,  H04W72/0453 ,  H04W72/23 ,  H04W74/08

Abstract: The present disclosure relates to communication methods and apparatuses. In one example method, a terminal device receives first information from an access device, and determines a first bandwidth part (BWP) of an access beam of the terminal device based on the received first information and a second BWP configured for the access beam of the terminal device. Then, the terminal device communicates with the access device in the determined first BWP by using the access beam. The first information indicates a relationship between the first BWP and the second BWP. The second BWP is a dedicated BWP configured for the access beam of the terminal device.

公开(公告)号：US12231282B2

公开(公告)日：2025-02-18

申请号：US18303038

申请日：2023-04-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaolu Wang ,  Hejia Luo ,  Rong Li ,  Jun Wang

IPC: H04L27/36 ,  H04L27/38

Abstract: A method includes: A transmit end obtains P QAM symbols; the transmit end performs IDWT or DWT on the P QAM symbols, to obtain a first signal matrix with N rows and M columns, and transposes the first signal matrix, to obtain a transposed first transpose matrix, where P, N, and M are all positive integers; and the transmit end outputs the transposed first transpose matrix. Correspondingly, a receive end obtains a second signal matrix with M rows and N columns; the receive end transposes the second signal matrix, to obtain a transposed second transpose matrix; and performs DWT or IDWT on the second transpose matrix, to obtain P QAM symbols.

公开(公告)号：US20240284453A1

公开(公告)日：2024-08-22

申请号：US18650937

申请日：2024-04-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaolu Wang ,  Hejia Luo ,  Rong Li ,  Jun Wang

IPC: H04W72/1268 ,  H04W56/00 ,  H04W72/0446 ,  H04W72/0457 ,  H04W72/232

CPC classification number: H04W72/1268 ,  H04W56/0045 ,  H04W72/0446 ,  H04W72/0457 ,  H04W72/232

Abstract: A first communication apparatus obtains first indication information in a first slot, where the first indication information indicates the first communication apparatus to switch from an uplink transmission bandwidth to a first transmission bandwidth; then, the first communication apparatus determines a second slot based on the first slot and a first switching delay, where the first switching delay is determined based on a first timing offset value, and the first timing offset value is determined based on a round-trip delay between a first location in an area covered by a second communication apparatus and the second communication apparatus; and the first communication apparatus sends uplink information to the second communication apparatus by using the first transmission bandwidth from the second slot.

公开(公告)号：US12047158B2

公开(公告)日：2024-07-23

申请号：US17707558

申请日：2022-03-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Chenlei Xu ,  Jianwei Zhou ,  Hejia Luo ,  Xiaolu Wang

IPC: H04B7/185 ,  H04L27/26 ,  H04W74/08 ,  H04W74/0833

CPC classification number: H04B7/18513 ,  H04L27/2607 ,  H04W74/0833

Abstract: The disclosure provides satellite communication methods and related devices. One example method includes generating a random access preamble sequence which includes a cyclic prefix, a sequence part, and a guard interval. The sequence part includes a subsequence A and a subsequence B, or the sequence part includes a subsequence C, and the subsequence C is a time domain superimposed sequence of a subsequence A and a subsequence B. The subsequence A includes at least one preamble symbol, the subsequence B includes at least one preamble symbol, and the subsequence A and the subsequence B are respectively generated by using ZC sequences of different root indexes, a quantity of subsequences A is m, a quantity of subsequences B is m or m−1, and m is a positive integer. The method further includes outputting the random access preamble sequence.

公开(公告)号：US20230354438A1

公开(公告)日：2023-11-02

申请号：US18331950

申请日：2023-06-09

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiaolu Wang ,  Hejia Luo ,  Rong Li ,  Jun Wang

IPC: H04W74/08 ,  H04B7/01 ,  H04W56/00

CPC classification number: H04W74/0833 ,  H04B7/01 ,  H04W56/005

Abstract: Embodiments of this application provide a wireless communication method and an apparatus. The method includes: A first communication apparatus receives first information, where the first information indicates a determining threshold of a parameter in a first parameter set, and the first parameter set includes at least one of the following parameters: location information, delay information, a timing advance rate, a rate of the timing advance rate, a Doppler value, a Doppler rate, and remaining coverage time. The first communication apparatus determines, based on the first information, whether an access condition is met, and performs random access when the access condition is met. This avoids a random access failure in a current cell and re-access in a next cell due to random access performed when the condition is not met.