公开(公告)号：US20240031887A1

公开(公告)日：2024-01-25

申请号：US18478679

申请日：2023-09-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Chong Lou ,  Chunhua You ,  Zhifang Gu

IPC: H04W36/00 ,  H04W36/08

CPC classification number: H04W36/0085 ,  H04W36/08

Abstract: A mobility management method and a communication apparatus are provided. The method includes: A terminal device measures a downlink reference signal of a first cell and a downlink reference signal of a second cell, and reports an obtained first measurement result to an access network device. The access network device sends, based on the first measurement result, at least one piece of beam information to the terminal device. The terminal device performs mobility management based on the at least one piece of beam information. The at least one piece of beam information includes beam information of the first cell and/or the second cell, the first cell is a cell serving the terminal device, the second cell is a cell other than the first cell, and the access network device is an access network device to which the first cell or the second cell belongs.

公开(公告)号：US20250081061A1

公开(公告)日：2025-03-06

申请号：US18757968

申请日：2024-06-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhifang Gu ,  Chong Lou

IPC: H04W36/08 ,  H04W36/00

Abstract: Embodiments of this application provide a cell handover method and an apparatus. A terminal device receives a first message from a network device to which a source cell belongs, where the first message indicates the terminal device to perform cell handover, the first message carries first indication information, and the first indication information indicates a plurality of beam directions. The terminal device communicates, by using the plurality of beam directions, with a network device to which at least one target cell belongs, where the at least one target cell is a cell to which the terminal device is handed over.

公开(公告)号：US20240284172A1

公开(公告)日：2024-08-22

申请号：US18646779

申请日：2024-04-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Chong Lou ,  Xiaoying Xu ,  Zhifang Gu

IPC: H04W12/06 ,  H04W12/106

CPC classification number: H04W12/06 ,  H04W12/106

Abstract: Embodiments of this application provide a secure communication method. In the method, security check is introduced in a plaintext information transmission process. An access network device preconfigures a security check value or a correspondence between a security check value and plaintext information, and performs security check in subsequent communication.

公开(公告)号：US20250126580A1

公开(公告)日：2025-04-17

申请号：US19003069

申请日：2024-12-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhifang Gu ,  Chong Lou ,  Qiang Fan

IPC: H04W56/00 ,  H04L1/1812

Abstract: This application provides a data transmission method and an apparatus. The method includes: A first central unit receives data from a user plane function network element, and then determines time information corresponding to the data, where the time information is used by a first distributed unit and a second distributed unit to synchronously transmit the data. Further, the first central unit separately sends the data and the time information to the first distributed unit and the second distributed unit. The first distributed unit and the second distributed unit send the data to a terminal device based on the time information. According to the method, the first distributed unit and the second distributed unit can perform synchronous transmission to the terminal device, to improve data transmission reliability.

公开(公告)号：US20250113273A1

公开(公告)日：2025-04-03

申请号：US18980255

申请日：2024-12-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhifang Gu ,  Chong Lou ,  Xingxing Hu ,  Hongzhuo Zhang

IPC: H04W36/08

Abstract: This application provides a communication method and a communication apparatus. In the method, after a DU sends a first handover message to a terminal device, the DU receives a second handover message from a CU, where the first handover message indicates to hand over the terminal device from a source cell to a first target cell in a first manner, the first manner includes an L1 and/or L2-based cell handover manner, the second handover message indicates to hand over the terminal device from the source cell to a second target cell in a second manner, and the second manner includes an L3-based cell handover manner. The DU determines that a cell handover manner of the terminal device is the first manner or the second manner.

公开(公告)号：US20240373307A1

公开(公告)日：2024-11-07

申请号：US18778097

申请日：2024-07-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Chong Lou ,  Zhifang Gu ,  Qiang Fan

IPC: H04W36/02 ,  H04W36/00 ,  H04W36/08

Abstract: This application relates to the field of communication technologies, and discloses a communication method and apparatus. The method includes: After determining that a first cell is a serving cell of a terminal device, an access network device may send N sets of data transmission mode information to the terminal device in the first cell, where N is a positive integer. The N sets of data transmission mode information include first data transmission mode information corresponding to a handover of the terminal device from a second cell to the first cell and/or second data transmission mode information corresponding to a handover of the terminal device from the second cell to a third cell, where the first cell, the second cell, and the third cell are cells managed by the access network device.