Power efficient ultra-wideband (uwb) tag for indoor positioning

Patent metadata

Field	Value
Publication number	US-2021266710-A1
Application number	US-202117314183-A
Country	US
Kind code	A1
Filing date	May 7, 2021
Priority date	Jan 11, 2019
Publication date	Aug 26, 2021
Grant date	—

Abstract

A system provides ultra-wideband (UWB) positioning. The system exchanges ranging signals at a first rate between a UWB beacon and a UWB tag. The system then determines movement or location information of the UWB tag; and select, based on the movement or location information, a second rate for exchanging subsequent ranging signals between the UWB beacon and the UWB tag. The system then exchanges the subsequent ranging signals at the second rate between the UWB beacon and the UWB tag.

First claim

What is claimed is:

1 . An ultra-wideband “UWB” positioning method, comprising:
exchanging ranging signals at a first rate between a UWB beacon and a UWB tag;
determining movement information of the UWB tag based on a movement detection device within or associated with the UWB tag;
selecting, based on the movement information, a second rate for exchanging subsequent ranging signals between the UWB beacon and the UWB tag; and
exchanging the subsequent ranging signals at the second rate between the UWB beacon and the UWB tag.

2 . The UWB positioning method of claim 1 , wherein the second rate is higher than the first rate in response to the movement information indicating that the UWB tag is moving.

3 . The UWB positioning method of claim 1 , wherein the second rate is higher than the first rate in response to the movement information indicating that the UWB tag is speeding up.

4 . The UWB positioning method of claim 1 , wherein the second rate is lower than the first rate in response to the movement information indicating that the UWB tag has stopped.

5 . The UWB positioning method of claim 1 , wherein the second rate is lower than the first rate in response to the movement information indicating that the UWB tag is slowing down.

6 . An ultra-wideband “UWB” beacon apparatus comprising:
a UWB communication component configured for exchanging ranging signals at a first rate with a UWB tag apparatus;
a controller configured for:
determining movement information of the UWB tag apparatus based on a movement detection device within or associated with the UWB tag apparatus; and
selecting, based on the movement information, a second rate for exchanging subsequent ranging signals between the UWB beacon apparatus and the UWB tag apparatus; and

the UWB communication component further configured for exchanging the subsequent ranging signals at the second rate between the UWB beacon apparatus and the UWB tag apparatus.

7 . The UWB beacon apparatus of claim 6 , wherein the second rate is higher than the first rate in response to the movement information indicating that the UWB tag apparatus is moving.

8 . The UWB beacon apparatus of claim 6 , wherein the second rate is higher than the first rate in response to the movement information indicating that the UWB tag apparatus is speeding up.

9 . The UWB beacon apparatus of claim 6 , wherein the second rate is lower than the first rate in response to the movement information indicating that the UWB tag apparatus has stopped.

10 . The UWB beacon apparatus of claim 6 , wherein the second rate is lower than the first rate in response to the movement information indicating that the UWB tag apparatus is slowing down.

11 . An ultra-wideband “UWB” tag apparatus, comprising a communication component configured for:
exchanging ranging signals at a first rate with a UWB beacon apparatus, causing the UWB beacon apparatus to determine movement information of the UWB tag apparatus based on a movement detection device within or associated with the UWB tag apparatus, and select, based on the movement information, a second rate for exchanging subsequent ranging signals between the UWB beacon apparatus and the UWB tag apparatus; and
exchanging the subsequent ranging signals at the second rate with the UWB beacon apparatus.

12 . The UWB tag apparatus of claim 11 , wherein the second rate is higher than the first rate in response to the movement information indicating that the UWB tag apparatus is moving.

13 . The UWB tag apparatus of claim 11 , wherein the second rate is higher than the first rate in response to the movement information indicating that the UWB tag apparatus is speeding up.

14 . The UWB tag apparatus of claim 11 , wherein the second rate is lower than the first rate in response to the movement information indicating that the UWB tag apparatus has stopped.

15 . The UWB tag apparatus of claim 11 , wherein the second rate is lower than the first rate in response to the movement information indicating that the UWB tag apparatus is slowing down.

Assignees

• Sensormatic Electronics Llc

Inventors

• Martin Walter Andrew
• Aydogan Yucel
• Lam Irene

Classifications

• G01S5/0263

  by combining or switching between positions derived from two or more separate positioning systems · CPC title

• A63F2300/8082

  Virtual reality · CPC title

• H04W4/029

  Location-based management or tracking services · CPC title

• H04W4/023

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

• G01S13/878

  Combination of several spaced transmitters or receivers of known location for determining the position of a transponder or a reflector (G01S13/874 takes precedence) · CPC title