Location correlation in a region based on signal strength indications

Patent metadata

Field	Value
Publication number	US-10873833-B2
Application number	US-201916588413-A
Country	US
Kind code	B2
Filing date	Sep 30, 2019
Priority date	Jul 30, 2018
Publication date	Dec 22, 2020
Grant date	Dec 22, 2020

Abstract

In aspects of location correlation in a region, a mobile device implements a location module that determines a current location of the mobile device in a region within communication range of a radio system based on location data received in radio signals from the radio system. The location module determines region coordinates at the current location of the mobile device in the region. The location module can then associate the region coordinates at the current location of the mobile device in the region with pixel grid coordinates determined from a digital image view as captured by a camera system in the region, and generate a location mapping of the region based on the current location and subsequent locations of the mobile device in the region. The location mapping correlates the locations of the mobile device in the region based on the pixel grid coordinates at the respective locations.

First claim

The invention claimed is:

1. A method, comprising:
determining a current location of a mobile device based on location data received in a first set of radio signals at the current location of the mobile device in a region, the first set of radio signals received from a first radio system of the region;
determining a received signal strength indication (RSSI) value from one or more beacon messages received in a second set of radio signals at the current location of the mobile device, the second set of radio signals received from a second radio system of the region;
generating a location mapping of the region based on the location data associated with the determined RSSI values at the current location and subsequent locations of the mobile device in the region; and
accessing the location mapping after the first radio system is removed from the region, the mobile device configured for location determination based on RSSI values received from the second radio system that is still in the region correlated with mapped locations of the region as indicated in the location mapping.

2. The method as recited in claim 1 , further comprising:
storing the location mapping in a data store that is communicatively accessible by the mobile device that enters the region, accesses the location mapping, and determines its own device location in the region.

3. The method as recited in claim 2 , wherein:
the data store is maintained by a computing device that is communicatively accessible to the mobile device; and
the mobile device location determination comprising:
communicating the RSSI values received from the second radio system that is still in the region to the computing device; and
receiving an indication of the mobile device location in the region from the computing device based on the RSSI values communicated to the computing device that utilizes the location mapping and the RSSI values to determine the mobile device location in the region.

4. The method as recited in claim 1 , wherein:
the first radio system of the region includes one or more ultra-wide band radios that transmit the location data to the mobile device within communication range of the one or more ultra-wide band radios; and
the second radio system of the region includes one or more beacon messaging radios that transmit the one or more beacon messages to the mobile device in the region.

5. The method as recited in claim 4 , wherein the one or more beacon messaging radios include one or more Bluetooth™ radios or one or more Wi-Fi radios that transmit the one or more beacon messages from which the RSSI values from the beacon messages are determined.

6. The method as recited in claim 1 , further comprising:
determining that the mobile device has moved to a next location from the current location based on device sensor data;
determining the next location of the mobile device based on the location data received in the first set of radio signals at the next location of the mobile device;
determining a next RSSI value from the one or more beacon messages received in the second set of radio signals at the next location of the mobile device;
associating the next location of the mobile device in the region with the next RSSI value determined from each of the beacon messages; and
updating the location mapping of the region based on the location data associated with the determined next RSSI value at the next location of the mobile device in the region.

7. A mobile device, comprising:
a first radio of the mobile device to receive a first set of radio signals from a first radio system of a region that transmits location data to the mobile device in the region;
a second radio of the mobile device to receive a second set of radio signals from a second radio system of the region that transmits beacon messages to the mobile device in the region;
a location module implemented at least partially in hardware to:
determine a current location of the mobile device based on the location data received in the first set of radio signals at the current location of the mobile device;
determine received signal strength indication (RSSI) values from the beacon messages received in the second set of radio signals at the current location of the mobile device;
generate a location mapping of the region based on the location data associated with the determined RSSI values at the current location and subsequent locations of the mobile device in the region; and
access the location mapping after the first radio system is removed from the region, the location module of the mobile device configured for location determination based on RSSI values received from the second radio system that is still in the region correlated with mapped locations of the region as indicated in the location mapping.

8. The mobile device as recited in claim 7 , wherein the second radio system of the region includes one or more Bluetooth™ radios or one or more Wi-Fi radios that transmit the beacon messages from which the RSSI values from the beacon messages are determined.

9. The mobile device as recited in claim 7 , wherein the location module is implemented to store the location mapping in a data store that is communicatively accessible by the mobile device that enters the region, accesses the location mapping, and determines its own device location in the region.

10. The mobile device as recited in claim 9 , wherein:
the data store is maintained by a computing device that is communicatively accessible to the mobile device; and
the location module is implemented to:
communicate RSSI values received from the second radio system that is still in the region to the computing device; and
receive an indication of the mobile device location in the region from the computing device based on the RSSI values communicated to the computing device that utilizes the location mapping and the RSSI values to determine the mobile device location in the region.

11. The mobile device as recited in claim 7 , wherein:
the first radio system of the region includes one or more ultra-wide band radios that transmit the location data to the mobile device within communication range of the one or more ultra-wide band radios; and
the second radio system of the region includes one or more beacon messaging radios that transmit the beacon messages to the mobile device in the region.

12. The mobile device as recited in claim 7 , wherein the location module is implemented to:
determine that the mobile device has moved to a next location from the current location based on device sensor data;
determine the next location of the mobile device based on the location data received in the first set of radio signals at the next location of the mobile device;
determine a next RSSI value from the beacon messages received in the second set of radio signals at the next location of the mobile device;
associate the next location of the mobile device in the region with the next RSSI value determined from the beacon messages; and
update the location mapping of the region based on the location data associated with the determined next RSSI value at the next location of the mobile device in the region.

13. A system, comprising:
a first radio system of a region to transmit a first set of radio signals that include location data;
a second radio system of the region to transmit a second set of radio signals that include received signal strength indication (RSSI) values;
the mobile device configured to:
determine a current location of the mobile device in the region based on the location data received in the first set of radio signals at the current location of the mobile devi

Assignees

• Motorola Mobility Llc

Inventors

• Tyagi Vivek Kumar
• Lautner Douglas Alfred
• Ambha Madhusudhana Nikhil
• Vissa Sudhir C
• Song Miao
• Wang Yunming

Classifications

• H04B17/318

  Received signal strength · CPC title

• H04W24/08

  Testing, {supervising or monitoring} using real traffic · CPC title

• H04W4/029 Primary

  Location-based management or tracking services · CPC title

• H04W4/80

  Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication · CPC title

• H04W64/00

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