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.

公开(公告)号：US20240243833A1

公开(公告)日：2024-07-18

申请号：US18620637

申请日：2024-03-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Kang Wang

IPC: H04L1/00 ,  G01S11/02

CPC classification number: H04L1/0002 ,  G01S11/02

Abstract: This application discloses a ranging rate switch control method and a communication apparatus. The method includes: When performing a current UWB ranging process with a second node, a first node receives rate indication information from the second node, where the rate indication information indicates a first data transmission rate available to the second node. The first node determines, based on the first data transmission rate indicated by the rate indication information and communication link quality of the first node, a target ranging rate at which a next UWB ranging process is performed with the second node. In the solution provided in this application, switch control is performed on a data transmission rate used by a node that performs ranging in a ranging process, so that flexibility of ranging control can be improved, and ranging performance can be improved.

公开(公告)号：US20230103074A1

公开(公告)日：2023-03-30

申请号：US17987300

申请日：2022-11-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kang Wang ,  Wei Huang ,  Guangli Dong

IPC: G01S19/07 ,  G01S19/04

Abstract: A positioning method is applied to a terminal device that includes a positioning chip and a system on chip (SoC). The method includes receiving, by the positioning chip, a satellite signal transmitted by at least one satellite, obtaining, by the positioning chip using the SoC, a differential correction value sent by a reference station, and performing, by the positioning chip based on a carrier phase differential technology, positioning calculation using the satellite signal and the differential correction value.

公开(公告)号：US20250016540A1

公开(公告)日：2025-01-09

申请号：US18894373

申请日：2024-09-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhan Guo ,  Kang Wang ,  Weihua Li

IPC: H04W8/00 ,  G01S13/02 ,  G01S13/76 ,  H04W76/10

Abstract: An information exchanging method includes a first device and a second device that negotiate, using respective narrowband communication systems, a parameter used in a ranging process, and then perform ranging using respective ultra-wideband (UWB) systems based on the parameter.

公开(公告)号：US20250015833A1

公开(公告)日：2025-01-09

申请号：US18894404

申请日：2024-09-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Fangli Liang ,  Kang Wang ,  Qian Yu ,  Wei Wang

IPC: H04B1/7183

Abstract: A clock synchronization method includes sending a narrowband synchronization frame via a narrowband system, to complete coarse clock synchronization in a wideband system; and sending a wideband frame after duration, allocated by the narrowband system, for switching from a narrowband to a wideband ends, to complete fine clock synchronization in the wideband system.

公开(公告)号：US20250012915A1

公开(公告)日：2025-01-09

申请号：US18894412

申请日：2024-09-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kang Wang ,  Weihua Li ,  Shu Peng

IPC: G01S13/78 ,  G01S1/04 ,  G01S13/76

Abstract: A ranging method includes a first device that sends a ranging control frame to a second device using a first resource with a lower bandwidth. The ranging control frame includes ranging parameter information. The first device and the second device perform ranging based on the ranging parameter information using a second resource.

公开(公告)号：US20250151018A1

公开(公告)日：2025-05-08

申请号：US19013758

申请日：2025-01-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huisha Zhang ,  Kang Wang

IPC: H04W64/00 ,  H04B1/7163 ,  H04W24/02 ,  H04W24/10

Abstract: A ranging method and an apparatus are provided. The ranging method is applied to a first communication apparatus, and the first communication apparatus includes a first ultra-wideband system and a first narrowband system. The ranging method includes: The first ultra-wideband system receives ranging configuration information from the first narrowband system, where the ranging configuration information is determined by the first narrowband system and a second narrowband system of a second communication apparatus through negotiation (S310); and the first ultra-wideband system generates a first ranging frame based on the ranging configuration information, where the first ranging frame is used to measure a distance between the first communication apparatus and the second communication apparatus (S320). This can implement a process of ranging between the first communication apparatus and the second communication apparatus in a more secure manner.