EP-4738716-A1 - METHOD AND APPARATUS FOR GENERATING AND OPERATING PRIVACY-PROTECTED ADDRESS IN ULTRA-WIDEBAND WIRELESS NETWORK SYSTEM

EP4738716A1EP 4738716 A1EP4738716 A1EP 4738716A1EP-4738716-A1

Abstract

A method and an apparatus for generating and operating a privacy-protected address in an ultra-wideband (UWB) wireless network system are disclosed. The method performed by a first device in an UWB wireless network system, according to one embodiment of the present disclosure, may comprise the steps of: broadcasting a public-based advertising poll frame; receiving a public-based advertising response frame from second devices in response to the public-based advertising poll frame; transmitting a public-based SOR frame to the second devices; and performing a ranging session procedure with the plurality of second devices after an initialization procedure based on the public-based advertising poll frame, the public-based advertising response frame and the public-based SOR frame. Here, the poll message broadcasted in the ranging session procedure can include a private address based on identification information representing devices related to the ranging session procedure or IRK information generated using a pre-defined specific value.

Inventors

LEE, Hongwon
CHOI, JINSOO
CHO, HANGYU
JANG, Insun

Assignees

LG Electronics Inc.

Dates

Publication Date: 20260506
Application Date: 20240628

Claims (20)

A method performed by a first device in an ultra-wideband (UWB) wireless network system, the method comprising: broadcasting a public-based advertising poll frame; in response to the public-based advertising poll frame, receiving a public-based advertising response frame from a second device; transmitting a public-based starting of ranging (SOR) frame to the second device; and after an initialization procedure based on the public-based advertising poll frame, the public-based advertising response frame, and the public-based SOR frame, performing a ranging session procedure with multiple second devices, wherein a poll message broadcast in the ranging session procedure includes a private address based on identity resolving key (IRK) information generated by using a pre-defined specific value or identification information representing devices related to the ranging session procedure.
The method of Claim 1, wherein: based on the identification information being included in the public-based advertising poll frame, the IRK information is generated by using a value of the identification information.
The method of Claim 1, wherein: based on the identification information not being included in the public-based advertising poll frame, the IRK information is generated by using the pre-defined specific value.
The method of Claim 1, wherein: the pre-defined specific value is a 0xFFFFFF value having a 3-octet size.
The method of Claim 1, wherein: the IRK information is generated by concatenating the identification information or the pre-defined specific value to a public address for the first device.
The method of Claim 5, wherein: the IRK information is generated by appending zero padding to a front or back of the public address for the first device.
The method of Claim 5, wherein: the public address for the first device is randomly generated by the first device, and is included in at least one of the public-based advertising poll frame or the public-based SOR frame.
The method of Claim 9, wherein: the public address for the first device, the identification information, and the pre-defined specific value have a 3-byte size, respectively, and the zero padding has a 10-byte size.
The method of Claim 1, wherein: the IRK information is generated by appending zero padding to a front or back of the identification information or the pre-defined specific value.
The method of Claim 1, wherein: a private address included in the broadcast poll frame includes a Hash field and a Prand field based on the IRK information, and a private address included in a response frame and a report frame related to the broadcast poll frame includes the Hash field based on the IRK information.
The method of Claim 10, wherein: the Prand field is set as a value having a 3-byte size randomly generated by the first device.
The method of Claim 1, wherein: the broadcast poll message corresponds to a first poll message among multiple poll messages within the ranging session procedure.
The method of Claim 12, wherein: a poll message subsequent to the broadcast poll message includes a private address based on IRK information generated by using a first public address for the first device and a second public address for a second device addressed to a corresponding poll message.
The method of Claim 1, wherein: through the initialization procedure, list information in which at least one of IRK information for the first device, IRK information for the second device, or IRK information for the devices related to the ranging session procedure is included is generated by the first device and the second device, respectively.
The method of Claim 1, wherein: the first device is an initiator or a controller, and the second device is a responder or a controlee.
The method of Claim 1, wherein: the initialization procedure is performed on a narrowband (NB) initialization channel or a UWB initialization channel, and the ranging session procedure is performed on a UWB ranging channel.
A first device apparatus in an ultra-wideband(UWB) wireless network system, the apparatus comprising: at least one transceiver; and at least one processor connected to the at least one transceiver, wherein the at least one processor is configured to: broadcast a public-based advertising poll frame; in response to the public-based advertising poll frame, receive a public-based advertising response frame from a second device; transmit a public-based starting of ranging (SOR) frame to the second device; and after an initialization procedure based on the public-based advertising poll frame, the public-based advertising response frame, and the public-based SOR frame, perform a ranging session procedure with multiple second devices, wherein a poll message broadcast in the ranging session procedure includes a private address based on identity resolving key (IRK) information generated by using a pre-defined specific value or identification information representing devices related to the ranging session procedure.
A method performed by a second device in an ultra-wideband (UWB) wireless network system, the method comprising: receiving a public-based advertising poll frame from a first device; in response to the public-based advertising poll frame, transmitting a public-based advertising response frame to the first device; receiving a public-based starting of ranging (SOR) frame from the first device; and after an initialization procedure based on the public-based advertising poll frame, the public-based advertising response frame, and the public-based SOR frame, performing a ranging session procedure with the first device, wherein a poll message broadcast in the ranging session procedure includes a private address based on identity resolving key (IRK) information generated by using a pre-defined specific value or identification information representing devices related to the ranging session procedure.
A second device apparatus in an ultra-wideband(UWB) wireless network system, the apparatus comprising: at least one transceiver; and at least one processor connected to the at least one transceiver, wherein the at least one processor is configured to: receive a public-based advertising poll frame from a first device; in response to the public-based advertising poll frame, transmit a public-based advertising response frame to the first device; receive a public-based starting of ranging (SOR) frame from the first device; and after an initialization procedure based on the public-based advertising poll frame, the public-based advertising response frame, and the public-based SOR frame, perform a ranging session procedure with the first device, wherein a poll message broadcast in the ranging session procedure includes a private address based on identity resolving key (IRK) information generated by using a pre-defined specific value or identification information representing devices related to the ranging session procedure.
A processing apparatus configured to control a device in an ultra-wideband(UWB) wireless network system, the processing apparatus comprising: at least one processor; and at least one computer memory operably connected to the at least one processor, and based on being executed by the at least one processor, storing instructions for performing a method according to any one of Claim 1 to Claim 16.

Description

[TECHNICAL FIELD] The present disclosure relates to a method and an apparatus for generating and operating a privacy protected address in an ultra-wideband (UWB) wireless network system. [BACKGROUND ART] A low-rate (LR) wireless networks may support low data rate connectivity between fixed or mobile devices having limited battery consumption requirements. For example, a LR wireless network may be applied to a wireless personal area network (WPAN). The Institute of Electrical and Electronics Engineers (IEEE) 802.15.4 standard defines various technologies for a physical layer (PHY) and a medium access control (MAC) sublayer for a LR wireless network. For example, the IEEE 802.15.4 standard defines various modes that support precise ranging. An ultra wideband (UWB) wireless network may support transmitting massive information at low power over a very wide band (e.g., a frequency band of 3.1GHz-10.6GHz). For example, an UWB technology may support transmitting digital sign information wirelessly by converting it into an impulse signal with a very short time duration below a nanosecond. The IEEE 802.15.4z standard defines an ultra wideband (UWB) technology related to the ranging technology. For example, the IEEE 802.15.4z standard includes a high-rate pulse frequency (HRP) PHY technology that supports high-speed data communication (e.g., 27-31 Mbps) and accurate two-way ranging and positioning, and a high-rate pulse frequency (LRP) PHY technology that supports various modes for low-speed data communication (e.g., a Radio Frequency Identification (RFID) application). Furthermore, the IEEE 802.15.4z standard includes an UWB PHY technology that refines the integrity and accuracy of ranging measurement, and a MAC technology that supports the exchange of ranging-related information between devices participating in ranging and the control of a time-of-flight (TOF) ranging procedure. Recently, the IEEE 802.15.4ab standard for the advancement of an UWB PHY/MAC including the refinement of the IEEE 802.15.4z standard-based wireless network technology is under discussion. [Disclosure] [Technical Problem] A technical problem of the present disclosure is to provide a method and an apparatus for generating and operating a privacy protected address in a UWB wireless network system. Specifically, a technical problem of the present disclosure is to provide a method and an apparatus for generating and operating a privacy protected address in a ranging session after public initialization in a UWB wireless network system. The technical objects to be achieved by the present disclosure are not limited to the above-described technical objects, and other technical objects which are not described herein will be clearly understood by those skilled in the pertinent art from the following description. [Technical Solution] A method performed by a first device in an ultra-wideband (UWB) wireless network system according to an aspect of the present disclosure may include broadcasting a public-based advertising poll frame; in response to the public-based advertising poll frame, receiving a public-based advertising response frame from a second device; transmitting a public-based starting of ranging (SOR) frame to the second device; and after an initialization procedure based on the public-based advertising poll frame, the public-based advertising response frame, and the public-based SOR frame, performing a ranging session procedure with multiple second devices. Here, a poll message broadcast in the ranging session procedure may include a private address based on identity resolving key (IRK) information generated by using a pre-defined specific value or identification information representing devices related to the ranging session procedure. A method performed by a second device in an ultra-wideband (UWB) wireless network system according to an additional aspect of the present disclosure may include receiving a public-based advertising poll frame from a first device; in response to the public-based advertising poll frame, transmitting a public-based advertising response frame to the first device; receiving a public-based starting of ranging (SOR) frame from the first device; and after an initialization procedure based on the public-based advertising poll frame, the public-based advertising response frame, and the public-based SOR frame, performing a ranging session procedure with the first device. Here, a poll message broadcast in the ranging session procedure may include a private address based on identity resolving key (IRK) information generated by using a pre-defined specific value or identification information representing devices related to the ranging session procedure. [Technical Effects] According to the present disclosure, a method and an apparatus for generating and operating a privacy protected address in a UWB wireless network system may be provided. According to the present disclosure, in a technical problem of the present disclosur