Systems and methods for using a predetermined number of communication channels of a wireless power transmitter to communicate with different wireless power receivers

  • US 10,148,097 B1
  • Filed: 12/29/2014
  • Issued: 12/04/2018
  • Est. Priority Date: 11/08/2013
  • Status: Active Grant
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First Claim
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1. A method for wireless power transmission by a wireless power transmitter, comprising:

  • at the wireless power transmitter that includes a plurality of antennas and a wireless communication component that supports a predetermined number of communication channels;

    detecting, by the wireless communication component, a plurality of wireless power receivers within a communication range of the wireless power transmitter;

    in accordance with a determination that a number of wireless power receivers in the plurality of wireless power receivers is less than or equal to the predetermined number of communication channels, dedicating communication channels to each respective wireless power receiver of the plurality of wireless power receivers, wherein each dedicated communication channel is used by a respective one of the plurality of wireless power receivers to send information used to identify a location of the respective wireless power receiver to the wireless power transmitter;

    detecting, by the wireless communication component, an additional wireless power receiver within the communication range of the wireless power transmitter; and

    in response to the detecting, determining that an updated number of wireless power receivers is greater than the predetermined number of communication channels, wherein the updated number of wireless power receivers comprises the additional wireless power receiver and the plurality of wireless receivers; and

    in accordance with the determining that the updated number of wireless power receivers is greater than the predetermined number of communication channels, ceasing to dedicate a first communication channel to a first wireless power receiver of the plurality of wireless power receivers and sharing the first communication channel with the first wireless power receiver and the additional wireless power receiver;

    receiving, via the wireless communication component and using the shared first communication channel, information used to identify a first location of the first wireless power receiver and information used to identify a second location of the additional wireless power receiver; and

    transmitting, via the plurality of antennas of the wireless power transmitter;

    first radio frequency (RF) power waves to the first location of the first wireless power receiver, andsecond RF power waves to the second location of the additional wireless power receiver.

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