Wireless Power Profile Handshake for Stable MPP Compatibility
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Solution Overview
Problem
Existing wireless power transfer systems face compatibility issues between different power profiles (MPP, BPP, EPP), leading to unstable protocol progression and potential damage to devices due to overvoltage or inconsistent power delivery.
Innovation Solution
A method and apparatus for transmitting a first XID packet at a specific frequency to identify MPP wireless power transmitters and receivers, ensuring stable protocol progression and compatibility confirmation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wireless power transmission systems use different power profiles (MPP, BPP, EPP), then device compatibility is improved, but protocol stability deteriorates
Solution Approach 1:
The patent applies preliminary action by transmitting an XID packet before actual power transmission to pre-identify the power profile type. This allows the receiver to know in advance whether the transmitter supports MPP, BPP, or EPP, enabling proper protocol selection before power delivery begins, thus maintaining both compatibility and protocol stability
Solution Approach 2:
The XID packet serves as an intermediary element that mediates between different power profiles. It carries profile identification information that enables the receiver to understand the transmitter's capabilities without requiring direct implementation of multiple complex protocols, simplifying the compatibility mechanism while maintaining reliability
2Adaptability or versatility
If wireless power transmission systems support multiple power profiles, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent extracts the power profile identification function into a separate, dedicated XID packet. Instead of embedding profile information throughout the entire communication protocol, the identification data is isolated in a specific packet type, making the system easier to implement and maintain while supporting multiple profiles
Solution Approach 2:
The system uses standardized packet structures for different power profiles, where the XID packet follows a consistent format regardless of which profile is ultimately used. This copying of the identification mechanism across different profiles reduces implementation complexity while maintaining adaptability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables stable power transfer and prevents device damage by ensuring compatible power profiles, enhancing user experience and infrastructure compatibility.
Implementation Method 1
The magnetic induction method corresponds to a method transmitting power by using electric currents that are induced to the coil of the receiver by a magnetic field, which is generated from a coil battery cell of the transmitter, in accordance with an electromagnetic coupling between a transmitting coil and a receiving coil
Implementation Method 2
The magnetic induction method corresponds to a method transmitting power by using electric currents that are induced to the coil of the receiver by a magnetic field, which is generated from a coil battery cell of the transmitter
Implementation Method 3
the magnetic resonance method is different from the magnetic induction method in that energy is transmitted due to a concentration of magnetic fields on both a transmitting end and a receiving end, which is caused by the generated resonance
Data Source
AI summary
The present specification (present disclosure) provides a method for receiving wireless power, performed by a wireless power receiver supporting a magnetic power profile (MPP), in a wireless power transmission system, and a device using same, the method comprising: transmitting a first identification (ID) packet to a wireless power transmitter on a first operating frequency, wherein the first ID packet includes information indicating the presence or absence of a first extended ID (XID) packet; transmitting the first XID packet to the wireless power transmitter on the first operating frequency, wherein the first XID packet includes information indicating that the first XID packet is a packet related to the MPP; and after transmission of the first XID packet, detecting whether the wireless power transmitter is operating on the first operating frequency or operating on a second operating frequency.