Method and apparatus for configuring medium access control (MAC) address for ultra-wideband (UWB) communication

Patent metadata

Field	Value
Publication number	US-12301279-B2
Application number	US-202217826414-A
Country	US
Kind code	B2
Filing date	May 27, 2022
Priority date	May 28, 2021
Publication date	May 13, 2025
Grant date	May 13, 2025

Abstract

Disclosed is a method of a first ultra-wideband (UWB) device, including identifying an extended MAC address of the first UWB device, generating a short MAC address of the first UWB device based on the extended MAC address, selecting one of the short MAC address and the extended MAC address as a MAC address identifying the first UWB device, and performing UWB communication with a second UWB device, using the MAC address, wherein the second UWB device operates as a controller defining and controlling a control message for UWB ranging, and wherein the first UWB device operates as a controlee using information included in the control message.

First claim

What is claimed is:

1. A method of a first ultra-wideband (UWB) device, comprising:
identifying an extended medium access control (MAC) address of the first UWB device;
generating input data based on the extended MAC address and at least one transform parameter;
generating output data by applying a preset transform function to the input data;
generating a short MAC address based on the output data;
selecting one of the short MAC address and the extended MAC address as a MAC address of the first UWB device; and
performing UWB communication with a second UWB device, using the selected MAC address,
wherein the second UWB device operates as a controller defining and controlling a control message for UWB ranging,
wherein the first UWB device operates as a controlee using information included in the control message, and
wherein the at least one transform parameter includes at least one of a session identifier (ID) identifying a UWB session, a scrambled timestamp sequence (STS) index value used to generate an STS, or a vendor specific value used to generate the STS.

2. The method of claim 1 ,
wherein the extended MAC address of the first UWB device corresponds to a fixed MAC address preset in a higher layer of the first UWB device, a MAC address stored in an applet included in a secure component of the first UWB device, or a MAC address generated by using all or part of a MAC address of an out-of-band (OOB) component in the first UWB device.

3. The method of claim 1 , further comprising transmitting at least one of the extended MAC address or the short MAC address to the second UWB device through an OOB message or a UWB message.

4. The method of claim 3 ,
wherein the OOB message is a controlee information message including capability information about the controlee.

5. The method of claim 3 ,
wherein the UWB message is a ranging initiation message initiating UWB ranging or a ranging response message responding to the ranging initiation message.

6. The method of claim 1 ,
wherein the preset transform function is one of an advanced encryption standard (AES) encryption function or a Hash function.

7. A method of a second ultra-wideband (UWB) device, comprising:
generating an extended medium access control (MAC) address of a first UWB device;
transmitting the extended MAC address to the first UWB device through a first out-of-band (OOB) message; and
performing UWB communication with the first UWB device, using one of the extended MAC address and a short MAC address of the first UWB device as a MAC address of the first UWB device,
wherein the second UWB device operates as a controller defining and controlling a control message for UWB ranging,
wherein the first UWB device operates as a controlee using information included in the control message,
wherein the short MAC address is generated by generating input data based on the extended MAC address and at least one transform parameter, generating output data by applying a preset transform function to the input data, and generating the short MAC address based on the output data, and
wherein the at least one transform parameter includes at least one of a session identifier (ID) identifying a UWB session, a scrambled timestamp sequence (STS) index value used to generate an STS, or a vendor specific value used to generate the STS.

8. The method of claim 7 ,
wherein the extended MAC address of the first UWB device corresponds to a fixed MAC address preset in a higher layer of the first UWB device, a MAC address stored in an applet included in a secure component of the first UWB device, or a MAC address generated by using all or part of a MAC address of an OOB component in the first UWB device.

9. The method of claim 7 , further comprising receiving the short MAC address from the first UWB device through a second OOB message or a UWB message.

10. The method of claim 9 ,
wherein the first OOB message is a session data message including UWB configuration information used to configure a UWB session, and
wherein the second OOB message is a controlee information message including capability information about the controlee.

11. The method of claim 9 ,
wherein the UWB message is a ranging initiation message initiating UWB ranging or a ranging response message responding to the ranging initiation message.

12. A first ultra-wide band (UWB) device for performing secure ranging, the first UWB device comprising:
a transceiver; and
a controller operationally connected with the transceiver, the controller being configured to:
identify an extended medium access control (MAC) address of the first UWB device;
generate input data based on the extended MAC address and at least one transform parameter;
generate output data by applying a preset transform function to the input data;
generate a short MAC address based on the output data;
select one of the short MAC address and the extended MAC address as a MAC address of the first UWB device; and
perform UWB communication with a second UWB device, using the selected MAC address,
wherein the second UWB device operates as a controller defining and controlling a control message for UWB ranging,
wherein the first UWB device operates as a controlee using information included in the control message, and
wherein the at least one transform parameter includes at least one of a session identifier (ID) identifying a UWB session, a scrambled timestamp sequence (STS) index value used to generate an STS, or a vendor specific value used to generate the STS.

13. The first UWB device of claim 12 ,
wherein the extended MAC address of the first UWB device corresponds to a fixed MAC address preset in a higher layer of the first UWB device, a MAC address stored in an applet included in a secure component of the first UWB device, or a MAC address generated by using all or part of a MAC address of an out-of-band (OOB) component in the first UWB device.

14. The first UWB device of claim 12 ,
wherein the controller is further configured to transmit at least one of the extended MAC address or the short MAC address to the second UWB device through an OOB message or a UWB message.

15. The first UWB device of claim 14 ,
wherein the OOB message is a controlee information message including capability information about the controlee.

16. The first UWB device of claim 14 ,
wherein the UWB message is a ranging initiation message initiating UWB ranging or a ranging response message responding to the ranging initiation message.

17. The first UWB device of claim 12 ,
wherein the preset transform function is one of an advanced encryption standard (AES) encryption function or a Hash function.

18. A second ultra-wide band (UWB) device for performing secure ranging, the second UWB device comprising:
a transceiver; and
a controller operationally connected with the transceiver, the controller being configured to:
generate an extended medium access control (MAC) address of a first UWB device;
transmit the extended MAC address to the first UWB device through a first out-of-band (OOB) message; and
perform UWB communication with the first UWB device, using one of the extended MAC address and a short MAC address of the first UWB device as a MAC address of the first UWB device,
wherein the second UWB device operates as a controller defining and controlling a control message for UWB ranging,
wherein the first UWB device operates as a controlee using information included in the control message,
wherein the short MAC address is generated by generating input data based on th

Assignees

• Samsung Electronics Co Ltd

Inventors

• Koo Jonghoe
• OH Gyubong
• Han Sehee

Classifications

• H04L61/50 Primary

  Address allocation · CPC title

• H04L2101/622

  Layer-2 addresses, e.g. medium access control [MAC] addresses · CPC title

• H04L2101/604

  Address structures or formats · CPC title

• H04W12/63

  Location-dependent; Proximity-dependent · CPC title

• H04W12/40

  Security arrangements using identity modules · CPC title