Scaling method for fira ul-tdoa and twr uwb ranging

Patent metadata

Field	Value
Publication number	US-2026032406-A1
Application number	US-202519192888-A
Country	US
Kind code	A1
Filing date	Apr 29, 2025
Priority date	Jul 25, 2024
Publication date	Jan 29, 2026
Grant date	—

Abstract

A computer-implemented method includes receiving, at an access point (AP) in an ultra-wide band (UWB) network from a tag, a registration request; in response to receiving the registration request, transmitting, by the AP to the tag, a registration response to complete a pairing between the tag and the AP, the registration response including an indication of support for ranging services including Two-Way Ranging (TWR) and Uplink Time Difference of Arrival (UL-TDoA); upon completion of the pairing, receiving, at the AP from the tag, a request message for obtaining a set of parameters for one of the ranging services, the request message including an identifier of a UWB component stored on the tag and a periodicity for the one of the ranging services; and sending, by the AP to the tag, a response message including the set of parameters that includes a proposed periodicity for the one of the ranging services.

First claim

What is claimed is:

1 . A computer-implemented method comprising:
receiving, at an access point (AP) in an ultra-wide band (UWB) network from a tag, a registration request; in response to receiving the registration request, transmitting, by the AP to the tag, a registration response to complete a pairing between the tag and the AP, the registration response including an indication of support for ranging services including Two-Way Ranging (TWR) and Uplink Time Difference of Arrival (UL-TDoA); upon completion of the pairing, receiving, at the AP from the tag, a request message for obtaining a set of parameters for one of the ranging services, the request message including an identifier of a UWB component stored on the tag and a periodicity for the one of the ranging services; and sending, by the AP to the tag, a response message including the set of parameters, wherein the set of parameters includes a proposed periodicity for the one of the ranging services.

2 . The computer-implemented method of claim 1 , wherein the one of the ranging services is the UL-TDoA and the set of parameters further includes a proposed slot that is specific to the tag.

3 . The computer-implemented method of claim 2 , wherein the proposed slot specific to the tag is identified using a time reference of the proposed slot based on an end of a synchronization uplink time measurement (UTM).

4 . The computer-implemented method of claim 2 , wherein the proposed slot specific to the tag is assigned to the tag independent of a media access control (MAC) address or an Uplink Time Difference of Arrival (UL-TDoA) device identifier (ID) of a particular anchor device with which the UL-TDoA is performed.

5 . The computer-implemented method of claim 1 , further comprising:
determining, by the AP, a coverage area of the tag; and in response to determining that the coverage area of the tag is limited to a particular cluster, sending, by the AP to the tag, a media access controller (MAC) address or an Uplink Time Difference of Arrival (UL-TDoA) device identifier (ID) of a particular anchor device using an out-of-band (OOB) signaling procedure.

6 . The computer-implemented method of claim 1 , wherein the response message further includes instructions for the tag to tune to a UWB channel of the AP and report to the AP a list including at least one of: (i) one or more anchors detected by the tag, and (ii) one or more anchors not detected by the tag.

7 . The computer-implemented method of claim 1 , wherein the one of the ranging services is the TWR, and the response message includes a list of one or more anchors for the tag to range with, and an associated validity time.

8 . An access point (AP) in an ultra-wide band (UWB) network, the AP comprising:
at least one memory configured to store computer-readable instructions; and at least one processor communicatively coupled with the at least one memory, and configured to execute the computer-readable instructions to:
receive, from a tag, a registration request;
in response to receiving the registration request, transmit, to the tag, a registration response to complete a pairing between the tag and the AP, the registration response including an indication of support for ranging services including Two-Way Ranging (TWR) and Uplink Time Difference of Arrival (UL-TDoA);
upon completion of the pairing, receive, from the tag, a request message for obtaining a set of parameters for one of the ranging services, the request message including an identifier of a UWB component stored on the tag and a periodicity for the one of the ranging services; and
send, to the tag, a response message including the set of parameters, wherein the set of parameters includes a proposed periodicity for the one of the ranging services.

9 . The AP of claim 8 , wherein the set of parameters further includes a proposed slot that is specific to the tag.

10 . The AP of claim 9 , wherein the one of the ranging services is the UL-TDoA and the proposed slot specific to the tag is identified using a time reference of the proposed slot based on an end of a synchronization uplink time measurement (UTM).

11 . The AP of claim 9 , wherein the proposed slot specific to the tag is assigned to the tag independent of a media access control (MAC) address or an Uplink Time Difference of Arrival (UL-TDoA) device identifier (ID) of a particular anchor device with which the UL-TDoA is performed.

12 . The AP of claim 8 , wherein the at least one processor is further configured to execute the computer-readable instructions to:
determine a coverage area of the tag; and in response to determining that the coverage area of the tag is limited to a particular cluster, send, to the tag, a media access controller (MAC) address or an Uplink Time Difference of Arrival (UL-TDoA) device identifier (ID) of a particular anchor device using an out-of-band (OOB) signaling procedure.

13 . The AP of claim 8 , wherein the response message further includes instructions for the tag to tune to a UWB channel of the AP and report to the AP a list including at least one of: (i) one or more anchors detected by the tag, and (ii) one or more anchors not detected by the tag.

14 . The AP of claim 8 , wherein the one of the ranging services is the TWR, and the response message includes a list of one or more anchors for the tag to range with, and an associated validity time.

15 . A non-transitory computer-readable media comprising computer-readable instructions stored thereon, which, when executed by at least one processor of an access point (AP) in an ultra-wide band (UWB) network, cause the AP to:
receive, from a tag, a registration request; in response to receiving the registration request, transmit, to the tag, a registration response to complete a pairing between the tag and the AP, the registration response including an indication of support for ranging services including Two-Way Ranging (TWR) and Uplink Time Difference of Arrival (UL-TDoA); upon completion of the pairing, receive, from the tag, a request message for obtaining a set of parameters for one of the ranging services, the request message including an identifier of a UWB component of the tag and a periodicity for the one of the ranging services; and send, to the tag, a response message including the set of parameters, wherein the set of parameters includes a proposed periodicity for the one of the ranging services.

16 . The non-transitory computer-readable media of claim 15 , wherein the one of the ranging services is the UL-TDoA and the set of parameters further includes a proposed slot that is specific to the tag.

17 . The non-transitory computer-readable media of claim 16 , wherein the proposed slot specific to the tag is identified using a time reference of the proposed slot based on an end of a synchronization uplink time measurement (UTM), and wherein the proposed slot specific to the tag is assigned to the tag independent of a media access control (MAC) address or an Uplink Time Difference of Arrival (UL-TDoA) device identifier (ID) of a particular anchor device with which the UL-TDoA is performed.

18 . The non-transitory computer-readable media of claim 15 , wherein the at least one processor is further configured to execute the computer-readable instructions to:
determine a coverage area of the tag; and in response to determining that the coverage area of the tag is limited to a particular cluster, send, to the tag, a media access controller (MAC) address or an Uplink Time Difference of Arrival (UL-TDoA) device identi

Assignees

• Cisco Tech Inc

Inventors

• Henry Jerome
• Alizadeh Ardalan
• Amini Peiman

Classifications

• H04W84/18

  Self-organising networks, e.g. ad-hoc networks or sensor networks · CPC title

• H04W60/04

  using triggered events · CPC title

• H04W4/023 Primary

  using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds · CPC title