公开(公告)号：US20250159474A1

公开(公告)日：2025-05-15

申请号：US19023117

申请日：2025-01-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shichang Hu ,  Qian Yu ,  Chao Ma

IPC: H04W12/043 ,  H04B1/7163 ,  H04L9/08

Abstract: Embodiments of this application relate to the field of communication technologies, and provide an ultra-wideband frame sending method and a communication device, to improve a security protection capability in UWB sending and receiving processes. A specific solution is as follows: A communication device obtains key information of an ultra-wideband frame, where the ultra-wideband frame includes a plurality of data fragments. The communication device sends the plurality of data fragments based on one or more gaps between the plurality of data fragments, or the communication device receives the plurality of data fragments based on one or more gaps between the plurality of data fragments, where the gaps between the plurality of data fragments are determined based on the key information. Embodiments of this application are used in a process of sending the ultra-wideband frame by the communication device.

公开(公告)号：US20250133532A1

公开(公告)日：2025-04-24

申请号：US19001691

申请日：2024-12-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Qian Yu ,  Chao Ma ,  Shichang Hu

IPC: H04W64/00 ,  H04B1/7163 ,  H04W12/03 ,  H04W12/122 ,  H04W24/10

Abstract: An initiating device randomly generates a sending time interval at which the initiating device sends ranging signal frames to a responding device such that an attacker cannot determine a rule of sending the ranging signal by the initiating device to the responding device and cannot send an interference signal at a same moment to perform interference and an attack, thereby enhancing information security of electronic devices during interactive communication.

公开(公告)号：US20250141852A1

公开(公告)日：2025-05-01

申请号：US19007166

申请日：2024-12-31

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Chao Ma ,  Qian Yu ,  Shichang Hu

IPC: H04L9/40 ,  H04B1/7163 ,  H04W56/00 ,  H04W64/00

Abstract: This application provides a signal transmission method, apparatus, and system. The method includes: generating an ultra-wideband signal, where the ultra-wideband signal includes a channel impulse response training sequence (CTS) field, and the CTS field is obtained by separately spreading at least one first preamble symbol based on a pseudo-random sequence; and sending the ultra-wideband signal, where the CTS field is used to determine a channel impulse response. This application can effectively improve ranging and positioning efficiency while implementing secure high-precision ranging and positioning.

公开(公告)号：US20250024254A1

公开(公告)日：2025-01-16

申请号：US18902708

申请日：2024-09-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Kang Wang ,  HuiSha Zhang ,  Qian Yu ,  Shichang Hu

IPC: H04W12/043 ,  H04L25/02 ,  H04W24/10

Abstract: A secure ranging method and an apparatus are provided. The method includes: a receiving-end device and a transmitting-end device obtain a session key through a narrowband system. The devices of both parties further generate secure CTSs in a symmetric manner based on the session key in combination with CTS configuration information, and perform inter-device ranging in a UWB system by using the CTSs. According to this application, the CTS can be flexibly configured based on the CTS configuration information, to improve secure ranging performance. In addition, the narrowband system replaces the UWB system to perform key-related information negotiation, and ranging is performed in the UWB system, so that high-accuracy ranging is implemented while low power consumption is considered.