Tracking device power preservation through signal strength reduction

• US 9,794,898 B1
• Filed: 05/10/2017
• Issued: 10/17/2017
• Est. Priority Date: 08/02/2016
• Status: Active Grant

• Current Assignee: TILE, INC. (Life360 Incorporated)
• Original Assignee: TILE, INC. (Life360 Incorporated)
• Inventors: de Barros Chapiewski, Guilherme
• Primary Examiner(s): Khan, Suhail
• Application Number:
  US15/591,428
• Time in Patent Office: 160 Days
• Field of Search: None
• CPC Class Codes: H04W 4/023 using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
• CPC Class Codes: H04W 52/0245 according to signal strength
• CPC Class Codes: H04W 52/0254 detecting a user operation or a tactile contact or a motion of the device
• CPC Class Codes: H04W 52/48 during retransmission after error or non-acknowledgment
• CPC Class Codes: H04W 72/0473 the resource being transmission power
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 76/19 Connection re-establishment
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

The power consumption of a tracking device can be reduced by managing the transmission power of the tracking device when a mobile device is at the edge of the range of the tracking device. A connection can be established between a tracking device and a mobile device at the edge of a first range of the tracking device. The transmission range of the tracking device can be reduced to sever the connection between the tracking device and the mobile device. After a pre-determined time interval or after a connection with the mobile device is re-established the transmission range of the tracking device can be restored.

Claims

1. A method for conserving power for a tracking device, the method comprising:

establishing, by a mobile device, a communicative connection with a tracking device, the tracking device having a first transmission range;

detecting, by the mobile device, a threshold number of disconnections between the mobile device and the tracking device; and

in response to detecting the threshold number of disconnections, providing, by the mobile device, an instruction to the tracking device to reduce the transmission range of the tracking device to a second transmission range smaller than the first transmission range;

wherein the transmission range of the tracking device is increased from the second transmission range to the first transmission range in response to re-establishing the connection between the tracking device and the mobile device.

2. The method of claim 1, wherein the tracking device transmission range is reduced by reducing an effective transmission power of a transmitter of the tracking device from a first transmission power to a second transmission power lower than the first transmission power.

3. The method of claim 2, wherein the tracking device transmission range is increased by increasing the effective transmission power of the transmitter of the tracking device from the second transmission power to the first transmission power.

4. The method of claim 1, wherein the tracking device transmission range is reduced by iteratively reducing an effective transmission power of a transmitter of the tracking device until the communication connection between the tracking device and the mobile device is severed.

5. The method of claim 1, wherein the mobile device is additionally configured to provide the instruction to reduce the transmission range in response to a signal strength of the tracking device detected by the mobile device being lower than a threshold signal strength.

6. The method of claim 1, wherein the tracking device is further configured to, in response to a passage of a pre-determined interval of time without re-establishing a connection with the mobile device, increase the transmission range of the tracking device to the first transmission range.

7. The method of claim 1, further comprising:

providing, by the mobile device, a second instruction to reduce the transmission range of the tracking device to the second transmission range, the second instruction sent in response to a determination by the mobile device that the signal strength of the tracking device detected by the mobile device is greater than a threshold signal strength.

8. A non-transitory computer readable storage medium containing instructions that when executed by a processor of a mobile device cause the mobile device to perform the steps of:

establishing, by the mobile device, a communicative connection with a tracking device, the tracking device having a first transmission range;

detecting, by the mobile device, a threshold number of disconnections between the mobile device and the tracking device; and

in response to detecting the threshold number of disconnections, providing, by the mobile device, an instruction to the tracking device to reduce the transmission range of the tracking device to a second transmission range smaller than the first transmission range;

wherein the transmission range of the tracking device is increased from the second transmission range to the first transmission range in response to re-establishing the connection between the tracking device and the mobile device.

9. The computer readable medium of claim 8, wherein the tracking device transmission range is reduced by reducing an effective transmission power of a transmitter of the tracking device from a first transmission power to a second transmission power lower than the first transmission power.

10. The computer readable medium of claim 9, wherein the tracking device transmission range is increased by increasing the effective transmission power of the transmitter of the tracking device from the second transmission power to the first transmission power.

11. The computer readable medium of claim 8, wherein the tracking device transmission range is reduced by iteratively reducing an effective transmission power of a transmitter of the tracking device until the communication connection between the tracking device and the mobile device is severed.

12. The computer readable medium of claim 8, wherein the instructions, when executed by the processor, cause the mobile device to further provide the instruction to reduce the transmission range in response to a signal strength of the tracking device detected at the mobile device being lower than a threshold signal strength.

13. The computer readable medium of claim 8, wherein the tracking device is further configured to, in response to a passage of a pre-determined interval of time without re-establishing a connection with the mobile device, increase the transmission range of the tracking device to the first transmission range.

14. The computer readable medium of claim 8, further comprising instructions for:

providing, by the mobile device, a second instruction to reduce the transmission range of the tracking device to the second transmission range, the second instruction sent in response to a determination by the mobile device that the signal strength of the tracking device detected by the mobile device is greater than a threshold signal strength.

15. A mobile device comprising a non-transitory computer-readable storage medium storing executable instructions that, when executed by a processor of the mobile device, perform steps comprising:

establishing, by a mobile device, a communicative connection with a tracking device, the tracking device having a first transmission range;

detecting, by the mobile device, a threshold number of disconnections between the mobile device and the tracking device; and

in response to detecting the threshold number of disconnections, providing, by the mobile device, an instruction to the tracking device to reduce the transmission range of the tracking device to a second transmission range smaller than the first transmission range;

wherein the transmission range of the tracking device is increased from the second transmission range to the first transmission range in response to re-establishing the connection between the tracking device and the mobile device.

16. The mobile device of claim 15, wherein the tracking device transmission range is reduced by reducing an effective transmission power of a transmitter of the tracking device from a first transmission power to a second transmission power lower than the first transmission power.

17. The mobile device of claim 16, wherein the tracking device transmission range is increased by increasing the effective transmission power of the transmitter of the tracking device from the second transmission power to the first transmission power.

18. The mobile device of claim 15, wherein the tracking device transmission range is reduced by iteratively reducing an effective transmission power of a transmitter of the tracking device until the communication connection between the tracking device and the mobile device is severed.

19. The mobile device of claim 15, wherein the mobile device is additionally configured to provide the instruction to reduce the transmission range in response to a signal strength of the tracking device detected at the mobile device being lower than a threshold signal strength.

20. The mobile device of claim 15, wherein the tracking device is further configured to, in response to a passage of a pre-determined interval of time without re-establishing a connection with the mobile device, increase the transmission range of the tracking device to the first transmission range.