# US 12,183,137 B2 · UWB device and control method thereof

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- Number: US 12,183,137 B2
- Document ID: US12183137B2
- Status: Granted
- Kind: B2
- Application number: 18/086,020
- Filed: 2022-12-21
- Published: 2023-06-29
- Granted: 2024-12-31
- Earliest claimed: 2021-12-27
- Assignees: Hyundai Mobis Co., Ltd.
- Applicants: Hyundai Mobis Co., Ltd.
- Inventors: Jong Chul Lim
- Web page: https://patentgrep.com/patent/US12183137B2

## CPC

- G01S 11/02: using radio waves (G01S19/00 takes precedence)
- G07C 9/00309: {operated with bidirectional data transmission between data carrier and locks}
- G01S 5/01: {Determining conditions which influence positioning, e.g. radio environment, state of motion or energy consumption}
- G01S 5/02: using radio waves (using satellite radio beacon systems for determining position G01S19/00)
- G01S 13/765: {with exchange of information between interrogator and responder}
- G07C 2009/00373: {whereby the wake-up circuit is situated in the lock}
- Y02D 30/70: in wireless communication networks
- G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G07C: TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE

## Abstract

An ultra-wide band (UWB) device including a memory configured to store one or more instructions, a communications part configured to perform UWB communications with a mobile device, one or more processors configured to execute the one or more instructions to perform a ranging together with the mobile device on basis of a reception window, counts a standby counter wherein when the ranging fails, and enter a sleep mode when the standby counter is equal to or greater than a maximum standby count.

## Claims

### Claim 1

An ultra-wide band (UWB) device, comprising:
a memory configured to store one or more instructions;
a communications part configured to perform UWB communications with a mobile device;
one or more processors configured to execute the one or more instructions stored in the memory, thereby configuring the one or more processors to:
perform a ranging together with the mobile device based on a reception window,
count a standby counter when the ranging fails;
clear the standby counter when the ranging succeeds; and
enter a sleep mode when the standby counter is equal to or greater than a maximum standby count.

### Claim 2 (depends on 1)

The UWB device of claim 1, wherein the one or more processors count the standby counter while performing the ranging.

### Claim 3 (depends on 1)

The UWB device of claim 1, wherein, when the ranging succeeds, the one or more processors are further configured to output a result of the ranging.

### Claim 4 (depends on 1)

The UWB device of claim 1, wherein the maximum standby count is set according to the reception window.

### Claim 5 (depends on 1)

The UWB device of claim 1, wherein the mobile device comprises at least one of a key fob and a smart phone.

### Claim 6

A control method for controlling an ultra-wide band (UWB) device, the control method comprising:
performing, by a processor, a ranging together with a mobile device based on a reception window;
counting, by the processor, a standby counter when the ranging performed by the processor fails;
clearing, by the processor, the standby counter when the ranging performed by the processor succeeds; and
comparing, by the processor, the standby counter with a maximum standby count, and repeating the ranging or entering a sleep mode.

### Claim 7 (depends on 6)

The control method of claim 6, wherein the maximum standby count is set according to the reception window.

### Claim 8 (depends on 6)

The control method of claim 6, further comprising outputting, by the processor, a result of the ranging when the ranging succeeds.

### Claim 9 (depends on 6)

The control method of claim 6, wherein the repeating of the ranging or the entering of the sleep mode comprises:
comparing the standby counter with the maximum standby count;
repeating the ranging when the standby counter is less than the maximum standby count; and
entering the sleep mode when the standby counter is equal to or greater than the maximum standby count.