Wireless Power FSK Negotiation for Stable Fast Charging Communication
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Solution Overview
Problem
Existing wireless power transfer systems lack a standardized method for negotiating support for fast Frequency Shift Keying (FSK) between wireless power transmitters and receivers, leading to potential communication mismatches and inefficiencies in power transfer.
Innovation Solution
A method and device for transmitting information about support for fast FSK from a wireless power transmitter to a receiver, and receiving a Specific Request (SRQ) packet for fast FSK, allowing for stable confirmation of FSK support and high-speed communication in the power transfer phase.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wireless power transfer systems use conventional communication methods without standardized fast FSK negotiation, then device compatibility is maintained, but communication speed and power transfer efficiency are reduced
Solution Approach 1:
The patent implements preliminary negotiation of fast FSK support during the configuration phase before power transfer begins. The transmitter sends a capability packet indicating fast FSK support, and the receiver responds with an SRQ packet to request fast FSK mode. This advance negotiation ensures both devices are prepared for high-speed communication before actual power transfer, resolving the contradiction by establishing efficiency-enhancing protocols in advance without adding operational complexity during power transfer.
2Speed
If wireless power transfer systems implement fast FSK communication without standardized negotiation, then communication speed increases, but communication stability and compatibility decrease
Solution Approach 1:
The patent implements a feedback-based negotiation mechanism where the transmitter first indicates its fast FSK capability in a capability packet, the receiver responds with an SRQ packet to request fast FSK mode, and the transmitter confirms support. This bidirectional feedback ensures both devices agree on fast FSK usage before high-speed communication begins, maintaining reliability while enabling speed improvement. The standardized packet exchange protocol ensures compatibility across different devices.
3Adaptability or versatility
If wireless power transfer systems use standardized fast FSK negotiation protocols, then communication compatibility improves, but negotiation process complexity increases
Solution Approach 1:
The patent segments the negotiation process into distinct, manageable phases: capability indication during configuration, SRQ packet exchange for fast FSK request, and confirmation during power transfer. Each phase uses specific standardized packets with defined formats and meanings. This segmentation makes the negotiation process systematic and easier to implement while ensuring broad device compatibility through standardization.
4Productivity
If wireless power transfer systems implement fast FSK without capability indication, then communication efficiency improves, but device compatibility and stable operation decrease
Solution Approach 1:
The patent requires preliminary capability indication through standardized capability packets exchanged during the configuration phase. The transmitter indicates fast FSK support capability before power transfer begins, allowing the receiver to determine whether to request fast FSK mode via SRQ packet. This preliminary capability advertisement ensures compatibility by allowing devices to assess mutual support before attempting fast communication, while still enabling efficient operation when both devices support fast FSK.
Data Source
AI summary
The present disclosure provides a method for transferring wireless power to a wireless power receiver that is performed by a wireless power transmitter in a wireless power transmission system, and a device using same, wherein the wireless power transmitter transmits, to the wireless power receiver, information on whether the wireless power transmitter supports fast frequency shift keying (FSK), and receives a specific request (SRQ) packet for the fast FSK from the wireless power receiver, wherein the SRQ for the fast FSK is received on the basis of the wireless power transmitter supporting the fast FSK, and FSK communication is performed on the basis of the fast FSK.