Tone power scheduler for wireless environmental applications

• US 10,199,854 B2
• Filed: 12/02/2016
• Issued: 02/05/2019
• Est. Priority Date: 12/02/2016
• Status: Active Grant

• Current Assignee: Ossia, Inc.
• Original Assignee: Ossia, Inc.
• Inventors: Zeine, Hatem, Hoang, Anh-Tuan, Mayes, Dale, Riekstins, Valdis Janis, Moghaddam, Ahmad Reza Abdolhosseini, Hardy, Joshua B.
• Primary Examiner(s): Chang, Joseph
• Application Number:
  US15/367,403
• Publication Number:
  US 20180159370A1
• Time in Patent Office: 795 Days
• Field of Search: 307104
• CPC Class Codes: H02J 50/20 using microwaves or radio frequency waves
• CPC Class Codes: H02J 50/23 characterised by the type of transmitting antennas, e.g. directional array antennas or Yagi antennas
• CPC Class Codes: H02J 50/402 the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge

Abstract

Systems and methods are described for providing wireless power. In some embodiments, a method for wireless power transmission comprises sending, via an antenna of a first wireless power receiver client and during a first tone time block, a beacon signal to a wireless power transmission system. During a first power tick time block of a plurality of power tick time blocks, a wireless power signal is received from an antenna array of the wireless power transmission system. When not sending the beacon signal and when not receiving the wireless power signal, a low power mode is entered that is configured to consume less power than a power consumed by the first wireless power receiver during either the sending of the beacon signal or the receiving of the wireless power signal.

Claims

1. A method for wireless power transmission comprising:

receiving, at an antenna array of a wireless power transmission system and during a first tone time block, a beacon signal from a first wireless power receiver client of a plurality of wireless power receiver clients configured to receive wireless power delivery from the wireless power transmission system;

calculating a first power transmission configuration for the first wireless power receiver client;

controlling the antenna array according to the first power transmission configuration to deliver wireless power to the first wireless power receiver client during a first power tick block of a plurality of power tick blocks following the first tone time block, wherein the plurality of power tick blocks occurs before a second tone time block subsequent to the first tone time block; and

controlling the antenna array according to a second power transmission configuration calculated for a second wireless power receiver client of the plurality of wireless power receiver clients to deliver wireless power to the second wireless power receiver client during a second power tick block of the plurality of power tick blocks following the first tone time block.

2. The method for wireless power transmission of claim 1 wherein calculating the first power transmission configuration comprises determining a complex conjugate of the beacon signal at each antenna of the antenna array.

3. The method for wireless power transmission of claim 2 further comprising storing the first power transmission configuration in computer readable memory.

4. The method for wireless power transmission of claim 1 further comprising:

receiving, at the antenna array and during the second tone time block, a beacon signal from the second wireless power receiver client;

calculating a second power transmission configuration for the second wireless power receiver client;

controlling the antenna array according to the first power transmission configuration to deliver wireless power to the first wireless power receiver client during a first power tick block of a plurality of power tick blocks following the second tone time block; and

controlling the antenna array according to the second power transmission to deliver wireless power to the second wireless power receiver client during a second power tick block of the plurality of power tick blocks following the second tone time block.

5. The method for wireless power transmission of claim 4 further comprising:

receiving, at the antenna array and during a third tone time block subsequent to the second tone time block and prior to a fourth tone time block subsequent to the third tone time block, no beacon signal from the second wireless power receiver client; and

controlling the antenna array according to the second power transmission to deliver wireless power to the second wireless power receiver client during a power tick block of a plurality of power tick blocks following the third tone time block, wherein the third plurality of power tick blocks occurs prior to the fourth tone time block.

6. The method for wireless power transmission of claim 1 further comprising:

controlling the antenna array according to the first power transmission configuration to deliver wireless power to the first wireless power receiver client during a third power tick block of the plurality of power tick blocks following the first tone time block.

7. The method for wireless power transmission of claim 1 further comprising:

delaying controlling the antenna array according to the first power transmission configuration by a start delay period subsequent to the first tone time block to allow stabilization of a plurality of power amplifiers configured to amplify wireless power transmission signals.

8. A method for wireless power transmission comprising:

sending, via an antenna of a first wireless power receiver client and during a first tone time block, a beacon signal to a wireless power transmission system;

during a first power tick time block of a plurality of power tick time blocks following the first tone time block, receiving a wireless power signal from an antenna array of the wireless power transmission system, wherein the plurality of power tick time blocks occurs before a second tone time block subsequent to the first tone time block; and

when not sending the beacon signal and when not receiving the wireless power signal, entering into a low power mode configured to consume less power than a power consumed by the first wireless power receiver during either the sending of the beacon signal or the receiving of the wireless power signal.

9. The method for wireless power transmission of claim 8 further comprising:

during a second power tick time block of a plurality of power tick time blocks following a second tone time block subsequent to the first tone time block and prior to a third tone time block subsequent to the second tone time block, receiving a wireless power signal from an antenna array of the wireless power transmission system.

10. The method for wireless power transmission of claim 9 further comprising:

sending no beacon signal to the wireless power transmission system during the second tone time block.

11. A wireless power transmission system comprising:

a wireless power transmission system comprising an antenna array;

a plurality of wireless power receiver clients configured to receive wireless power delivery from the wireless power transmission system and comprising;

a first wireless power receiver client comprising a first antenna; and

a second wireless power receiver client comprising a second antenna;

wherein the first wireless power receiver client is configured to;

send, via the first antenna and during a first tone time block, a beacon signal to the wireless power transmission system;

during a first power tick time block of a plurality of power tick time blocks following the first tone time block, receive a wireless power signal from the antenna array, wherein the plurality of power tick time blocks occurs before a second tone time block subsequent to the first tone time block; and

when not sending the beacon signal and when not receiving the wireless power signal, enter into a low power mode configured to consume less power than a power consumed by the first wireless power receiver during either the sending of the beacon signal or the receiving of the wireless power signal; and

wherein the wireless power transmission system is configured to;

receive the beacon signal from the first wireless power receiver client;

calculate a first power transmission configuration for the first wireless power receiver client;

control the antenna array according to the first power transmission configuration to deliver wireless power to the first wireless power receiver client during a first power tick time block of a plurality of power tick time blocks following the first tone time block, wherein the plurality of power tick time blocks occurs before a second tone time block subsequent to the first tone time block; and

control the antenna array according to a second power transmission configuration calculated for the second wireless power receiver client to deliver wireless power thereto during a second power tick time block of the plurality of power tick time blocks following the first tone time block.

12. The wireless power transmission system of claim 11 wherein the wireless power transmission system, in being configured to calculate the first power transmission configuration, is configured to determine a complex conjugate of the beacon signal at each antenna of the antenna array.

13. The wireless power transmission system of claim 12 wherein the wireless power transmission system is configured to store the first power transmission configuration in computer readable memory.

14. The wireless power transmission system of claim 11 wherein the wireless power transmission system is further configured to:

receive, at the antenna array and during the second tone time block, a beacon signal from the second wireless power receiver client;

calculate a second power transmission configuration for the second wireless power receiver client;

control the antenna array according to the first power transmission configuration to deliver wireless power to the first wireless power receiver client during a first power tick time block of a plurality of power tick time blocks following the second tone time block; and

control the antenna array according to the second power transmission to deliver wireless power to the second wireless power receiver client during a second power tick time block of the plurality of power tick time blocks following the second tone time block.

15. The wireless power transmission system of claim 14 wherein the wireless power transmission system is further configured to:

receive, at the antenna array and during a third tone time block subsequent to the second tone time block and prior to a fourth tone time block subsequent to the third tone time block, no beacon signal from the second wireless power receiver client; and

control the antenna array according to the second power transmission to deliver wireless power to the second wireless power receiver client during a power tick time block of a plurality of power tick time blocks following the third tone time block, wherein the third plurality of power tick time blocks occurs prior to the fourth tone time block.

16. The wireless power transmission system of claim 11 wherein the wireless power transmission system is further configured to:

control the antenna array according to the first power transmission configuration to deliver wireless power to the first wireless power receiver client during a third power tick time block of the plurality of power tick time blocks following the first tone time block.

17. The wireless power transmission system of claim 11 wherein the wireless power transmission system is further configured to:

delay controlling the antenna array according to the first power transmission configuration by a start delay period subsequent to the first tone time block to allow stabilization of a plurality of power amplifiers configured to amplify wireless power transmission signals.

18. The wireless power transmission system of claim 11 wherein the wireless power transmission system is further configured to:

control the antenna array according to the first power transmission configuration to deliver wireless power to the first wireless power receiver client during a third power tick time block of the plurality of power tick time blocks following the first tone time block.

19. The wireless power transmission system of claim 18 wherein the plurality of power tick time blocks following the first tone time block comprises a larger number of power tick time blocks than the number of wireless power receiver clients in the plurality of wireless power receiver clients.

20. The wireless power transmission system of claim 18 wherein the wireless power transmission system is further configured to:

assign the first wireless power receiver client a higher priority than the second wireless power receiver client.