Environment mapping based on UWB tags

Patent metadata

Field	Value
Publication number	US-12152902-B2
Application number	US-202117473477-A
Country	US
Kind code	B2
Filing date	Sep 13, 2021
Priority date	Sep 13, 2021
Publication date	Nov 26, 2024
Grant date	Nov 26, 2024

Abstract

In aspects of environment mapping based on UWB tags, a system includes ultra-wideband (UWB) tags located for association with respective objects in an environment, where each UWB tag is identified with a digital label indicative of the association with one or more of the objects. A mapping module is implemented to determine a location of each of the UWB tags in the environment, and determine relative positions of each of the UWB tags with respect to each other. The mapping module can generate a location association map of the objects in the environment based on the location and the relative position of each of the UWB tags associated with the respective objects. In an environment within a building, the mapping module can generate the location association map as a floor plan of the building, including the objects location in the building.

First claim

The invention claimed is:

1. A system, comprising:
ultra-wideband (UWB) tags located for association with smart devices in an environment, each of the UWB tags identified with a digital label indicative of the association with one or more of the smart devices; and
a mapping module implemented at least partially in hardware of a smart device and configured to:
receive UWB positioning data and device identifying information communicated from the smart devices from which an identity of a smart device of the smart devices is determinable;
determine relative positions of each of the UWB tags with respect to each other based on a location of each of the UWB tags;
determine which of the smart devices is associated with a UWB tag based on the device identifying information communicated by the smart device and the relative positions of each of the UWB tags; and
generate a location association map of the smart devices in the environment based on the location and the relative positions of each of the UWB tags associated with the smart devices.

2. The system of claim 1 , wherein the mapping module is configured to generate the location association map of the smart devices in a three-dimension coordinate system.

3. The system of claim 1 , wherein:
the environment is within a building; and
the mapping module is configured to generate the location association map as a floor plan of the building, including locations of the smart devices in the building.

4. The system of claim 1 , further comprising a mobile device configured to:
implement the mapping module to generate the location association map of the smart devices in a three-dimension coordinate system of the environment; and
display the location association map on a display screen of the mobile device.

5. The system of claim 1 , wherein a UWB tag is located for association with the smart device in the environment, and the UWB tag is configured to determine the identity of the smart device based on the device identifying information communicated from the smart device.

6. The system of claim 1 , further comprising a mobile device configured for network association with the UWB tags and the smart devices in the environment, the mobile device configured to implement the mapping module and receive the device identifying information from the UWB tags and the smart devices; and
wherein the mapping module is configured to:
determine a nearest smart device to a UWB tag based on a received signal strength indication (RSSI) associated with the device identifying information received from the UWB tag and the nearest smart device; and
associate the UWB tag with the nearest smart device.

7. The system of claim 1 , further comprising:
a camera device configured to capture an image of a region of the environment;
a smart device detection module configured to identify the smart devices in the region of the environment from the image; and
wherein the mapping module is configured to determine the location and the relative positions of each of the UWB tags in the region of the environment based on identified smart devices in the region of the environment.

8. The system of claim 7 , wherein:
the environment is within a building; and
the mapping module is configured to generate the location association map as a floor plan of the building, including a location of each of the smart devices in the building, the floor plan including positions of walls of the building as determined from the image.

9. A method, comprising:
establishing communicative links between a mobile device and ultra-wideband (UWB) tags located for association with respective smart devices in an environment;
receiving UWB positioning data and device identifying information communicated from the smart devices from which an identity of a smart device is determinable;
determining a relative position of each of the UWB tags in the environment based on the UWB positioning data;
determining which of the smart devices is associated with a UWB tag based on the device identifying information communicated by the smart device and the relative position of each of the UWB tags; and
generating a location association map of the smart devices in the environment based on the relative position of each of the UWB tags associated with the respective smart devices.

10. The method of claim 9 , further comprising:
receiving the UWB positioning data received from the UWB tags via in-band session exchanges with a UWB radio.

11. The method of claim 9 , wherein the location association map is generated in a three-dimension coordinate system, including the relative position of each of the UWB tags in the environment.

12. The method of claim 9 , wherein:
the environment is within a building; and
the location association map is generated as a floor plan of the building, including the relative position of each of the UWB tags in the building.

13. The method of claim 9 , wherein:
the device identifying information is communicated via Bluetooth or Bluetooth Low Energy (BLE) from the smart devices as a device name, a Bluetooth MAC ADDR, and a received signal strength indication (RSSI);
the receiving is by the UWB tags to receive the device identifying information communicated from the smart devices; and
the determining is by the UWB tag to identify the smart device that is located nearest to the UWB tag based on the device identifying information received from the smart devices.

14. The method of claim 13 , further comprising:
generating, by each of the UWB tags, an ordered list of the smart devices based on the device identifying information to identify the smart device that is located nearest to the UWB tag.

15. The method of claim 9 , wherein:
the device identifying information is communicated via Bluetooth or Bluetooth Low Energy (BLE) from the smart devices as a device name, a Bluetooth MAC ADDR, and a received signal strength indication (RSSI);
the receiving is by the mobile device to receive the device identifying information communicated from the smart devices; and
the determining is by the mobile device to identify the smart device that is located nearest to the UWB tag based on the device identifying information received from the smart devices.

16. The method of claim 9 , further comprising:
capturing an image of a region of the environment;
identifying smart devices in the region of the environment from the image; and
determining a location and the relative position of each of the UWB tags in the region of the environment based on the smart devices in the region of the environment.

17. The method of claim 16 , wherein:
the environment is within a building; and
the generating the location association map as a floor plan of the building, including locations of the smart devices in the building, the floor plan including positions of walls of the building as determined from the image.

18. A system, comprising:
one or more ultra-wideband (UWB) tags located for association with smart devices in an environment, each UWB tag identified with a digital label indicative of the association with one of the smart devices, the smart devices configured to:
receive UWB positioning data and identity information;
determine a location of each of the one or more UWB tags in the environment based on the UWB positioning data;
determine a nearest smart device to a UWB tag based on a received signal strength indications (RSSI) associated with device identifying information received from the nearest smart device and based on the identity information;
as

Assignees

• Motorola Mobility Llc

Inventors

• Russell Michael E
• Simerson Jarrett K
• Merrell Thomas Yates

Classifications

• G01C21/3841

  Data obtained from two or more sources, e.g. probe vehicles · CPC title

• H04W64/003

  locating network equipment · CPC title

• H04W64/00

  Locating users or terminals {or network equipment} for network management purposes, e.g. mobility management · CPC title

• H04W4/029

  Location-based management or tracking services · CPC title

• H04W4/02

  Services making use of location information · CPC title