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Wireless power transmission network and wireless power transmission method

  • US 10,601,257 B2
  • Filed: 07/31/2017
  • Issued: 03/24/2020
  • Est. Priority Date: 07/31/2012
  • Status: Active Grant
First Claim
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1. A wireless power transmission method, performed by a controller in a base station in a wireless power transfer network which performs wireless power transmission, the wireless power transmission method comprising:

  • recognizing at least one electronic device of a plurality of electronic devices based on a magnetic field signal;

    transmitting a first packet including first time slot allocation information indicating a first time slot allocated to a first electronic device of the plurality of electronic devices by using a frame structure including a plurality of time slots;

    receiving a second packet from the first electronic device during the first time slot of the plurality of time slots which is allocated to the first electronic device;

    receiving a third packet from a second electronic device of the plurality of electronic devices during a second time slot of the plurality of time slots, wherein the second time slot is positioned after the first time slot in one frame, the second time slot is a time slot in which the plurality of electronic devices are allowed to transmit information freely, and the second time slot is a time slot which is not allocated to the second electronic device previously;

    transmitting a fourth packet including second time slot allocation information by using the frame structure based on the third packet; and

    transferring wireless power by using a magnetic field to the first electronic device and the second electronic device,wherein the second packet and the third packet include information on received power.

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