Wireless power transfer method, apparatus and system
First Claim
1. A communication method of a wireless power transmitter for transferring power in a wireless manner, the communication method comprising:
- allocating a slot among a plurality of slots to a first wireless power receiver, the slot being allocated to the first wireless power receiver for sending information of the first wireless power receiver to the wireless power transmitter while wireless power is transferred to the first wireless power receiver;
transferring the wireless power to the first wireless power receiver by the wireless power transmitter;
detecting a second wireless power receiver by the wireless power transmitter during the wireless power transfer to the first wireless power receiver;
receiving first information from the first wireless power receiver and second information from the second wireless power receiver within a first slot among the plurality of slots, the first slot being unallocated; and
transmitting a collision related signal to the first and second wireless power receivers such that a collision resolution mechanism is executed by each of the first and second wireless power receivers respectively.
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Accused Products
Abstract
The present invention relates to a wireless power transmission method, a wireless power transmission apparatus, and a wireless charging system in a wireless power transmission field, and the wireless power transmission method may include receiving first information of a first wireless power receiver and second information of a second wireless power receiver that receive power in a wireless manner within a first slot among a plurality of slots, transmitting a NAK (not-acknowledge) signal to the first and the second wireless power receiver and executing a collision resolution mechanism in the first and the second wireless power receiver.
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Citations
20 Claims
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1. A communication method of a wireless power transmitter for transferring power in a wireless manner, the communication method comprising:
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allocating a slot among a plurality of slots to a first wireless power receiver, the slot being allocated to the first wireless power receiver for sending information of the first wireless power receiver to the wireless power transmitter while wireless power is transferred to the first wireless power receiver; transferring the wireless power to the first wireless power receiver by the wireless power transmitter; detecting a second wireless power receiver by the wireless power transmitter during the wireless power transfer to the first wireless power receiver; receiving first information from the first wireless power receiver and second information from the second wireless power receiver within a first slot among the plurality of slots, the first slot being unallocated; and transmitting a collision related signal to the first and second wireless power receivers such that a collision resolution mechanism is executed by each of the first and second wireless power receivers respectively. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A wireless power transmitter for transferring power in a wireless manner, the wireless power transmitter comprising:
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a power transmission unit configured to transfer power in a wireless manner; and a power transmission controller configured to; allocate a slot among a plurality of slots to a first wireless power receiver, wherein the slot is allocated to the first wireless power receiver for sending information of the first wireless power receiver to the wireless power transmitter while wireless power is transferred to the first wireless power receiver using the power transmission unit detect a second wireless power receiver during the wireless power transfer to the first wireless power receiver, receive first information from the first wireless power receiver and second information from the second wireless power receiver within a first slot among the plurality of slots, the first slot being unallocated, and transmit a collision related signal to the first and second wireless power receivers such that a collision resolution mechanism is executed by each of the first and second wireless power receivers respectively. - View Dependent Claims (13, 14, 15)
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16. A wireless charging system, comprising:
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a transmitter formed to transfer wireless power; and a first receiver and a second receiver each formed to receive wireless power from the transmitter, wherein the transmitter allocates a slot among a plurality of slots to the first receiver, wherein the slot is allocated to the first receiver for sending information to the transmitter while wireless power is transferred to the first receiver, wherein the transmitter detects the second power receiver during the wireless power transfer to the first receiver, transmits a collision related signal to the first and second receivers when first information from the first receiver and second information from the second receiver are received within a first slot among the plurality of slots, the first slot being unallocated, and wherein each of the first and second receivers executes a collision resolution mechanism respectively upon receiving the collision related signal. - View Dependent Claims (17, 18, 19, 20)
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Specification