Method and device for preventing data transmission collision in wireless power transmission system

Patent metadata

Field	Value
Publication number	US-2026089243-A1
Application number	US-202519409456-A
Country	US
Kind code	A1
Filing date	Dec 4, 2025
Priority date	Feb 25, 2021
Publication date	Mar 26, 2026
Grant date	—

Abstract

The present disclosure relates to a method for transmitting data packet information, wherein the method is performed by a wireless power transmitter in a wireless power transmission system, and comprises the steps of: entering a power transfer phase; receiving a plurality of control error (CE) packets from a wireless power receiver during the power transfer phase; determining the intervals between the plurality of CE packets; and transmitting the data packet information to the wireless power receiver during the power transfer phase on the basis of the intervals, wherein the length of the data packet information is determined on the basis of the length of the intervals.

First claim

What is claimed is:

1 . A method for transmitting data packet information in a wireless power transfer system, the method performed by a wireless power transmitter and comprising:
transmitting a digital ping to a wireless power receiver; entering a power transfer phase; receiving a plurality of control error (CE) packets from the wireless power receiver during the power transfer phase; determining an interval between the plurality of CE packets; and transmitting the data packet information to the wireless power receiver during the power transfer phase based on the interval; wherein a length of the data packet information is determined based on a length of the interval.

2 . The method of claim 1 , wherein the wireless power transmitter transmits the data packet information to the wireless power receiver during the interval.

3 . The method of claim 1 , wherein the wireless power transmitter periodically determines a new interval during the power transfer phase,
wherein the length of the data packet information is adjusted based on a length of the new interval.

4 . The method of claim 3 , wherein, based on the length of the new interval being greater than the length of the interval, the length of the data packet information is adjusted longer than before.

5 . The method of claim 1 , wherein the wireless power transmitter detects a collision between a new CE received from the wireless power receiver and the data packet information,
wherein the wireless power transmitter determines a new interval based on detecting the collision, wherein the length of the data packet information is adjusted based on a length of the new interval.

6 . The method of claim 5 , wherein, based on the length of the new interval being less than the length of the interval, the length of the data packet information is adjusted shorter than before.

7 . The method of claim 5 , wherein, after detecting the collision, the wireless power transmitter determines the new interval after a specific number of additional CEs are received.

8 . The method of claim 1 , wherein, based on the length of the interval being shorter than a specific length, the wireless power transmitter does not transmit the data packet information.

9 . The method of claim 1 , wherein the data packet information includes at least one of at least one Auxiliary Data Control (ADC) and at least one Auxiliary Data Transport (ADT).

10 . A wireless power transmitter, comprising:
a power converter related to transferring wireless power to a wireless power receiver; and a communication/controller related to communicating with the wireless power receiver and controlling the transfer of the wireless power; wherein the communication/controller is configured to: transmit a digital ping to the wireless power receiver; enter a power transfer phase; receive a plurality of control error (CE) packets from the wireless power receiver during the power transfer phase; determine an interval between the plurality of CE packets; and transmit data packet information to the wireless power receiver during the power transfer phase based on the interval; wherein a length of the data packet information is determined based on a length of the interval.

11 . A method for receiving data packet information in a wireless power transfer system, the method performed by a wireless power receiver and comprising:
receiving a digital ping to a wireless power transmitter; entering a power transfer phase; transmitting a plurality of control error (CE) packets to a wireless power transmitter during the power transfer phase; receiving the data packet information from the wireless power transmitter during the power transfer phase based on an interval between the plurality of CE packets; wherein a length of the data packet information is determined based on a length of the interval.

12 . The method of claim 11 , wherein the wireless power receiver receives the data packet information from the wireless power transmitter during the interval.

13 . The method of claim 11 , wherein the wireless power receiver determines a new interval,
wherein the length of the data packet information is adjusted based on a length of the new interval.

14 . The method of claim 13 , wherein, based on the length of the new interval being greater than the length of the interval, the length of the data packet information is adjusted longer than before.

15 . The method of claim 13 , wherein, based on the length of the new interval being less than the length of the interval, the length of the data packet information is adjusted shorter than before.

16 . The method of claim 11 , wherein the data packet information includes at least one of at least one Auxiliary Data Control (ADC) and at least one Auxiliary Data Transport (ADT).

Assignees

• Lg Electronics Inc

Inventors

• Kim Jaeyeol
• Lee Seonghun
• Youn Jinho
• Park Yongcheol

Classifications

• H02J50/12

  of the resonant type · CPC title

• H02J50/80

  involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices · CPC title

• H02J7/42

  with electronic devices having internal batteries, e.g. mobile phones · CPC title

• H04L5/14

  Two-way operation using the same type of signal, i.e. duplex · CPC title

• H04L9/40

  Network security protocols · CPC title