Wireless Power Authentication Protocol
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Solution Overview
Problem
The existing wireless power transfer systems lack a reliable method for authenticating devices, leading to potential safety risks due to the presence of non-authorized products that do not adhere to technical standards, which can result in overheating and other safety issues.
Innovation Solution
A method and device for authenticating wireless power transfer systems, involving a communication unit that receives indication information on authentication support from a target device, transmits an authentication request, and confirms authentication based on a certificate response, using an auxiliary data transport protocol with specific packet structures and toggling header values for data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless power transfer is performed without authentication, then convenience and mobility are improved, but safety and reliability deteriorate due to unauthorized devices causing overheating and other hazards
Solution Approach 1:
The patent implements authentication procedures before wireless power transfer begins. The transmitting device and receiving device exchange authentication packets and verify certificates in advance, ensuring only authorized devices can receive power. This preliminary authentication action prevents unauthorized devices from causing safety issues while maintaining convenience for legitimate users.
2Reliability
If authentication protocols are implemented, then safety and reliability are improved, but device complexity increases due to additional communication protocols and packet structures
Solution Approach 1:
The patent uses a universal authentication framework based on public key infrastructure that can be implemented across different wireless power transfer systems. The authentication packets and certificate verification processes serve multiple functions: identifying devices, verifying authorization, and establishing secure communication channels. This multi-functional approach reduces overall system complexity by consolidating security functions into a standardized protocol.
3Reliability
If authentication packets and certificate verification are performed, then reliability is improved, but communication time and data transmission overhead increase
Solution Approach 1:
Authentication and certificate verification are performed before power transfer begins, establishing trust relationships in advance. This allows the actual power transfer process to proceed efficiently without repeated authentication overhead. The preliminary action of exchanging authentication packets and verifying certificates ensures reliability while minimizing time loss during the main power transfer operation.
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
Ensures stability and reliability by authenticating devices before and after wireless charging, preventing potential safety hazards by ensuring only authorized and standards-compliant products are used, thereby enhancing user safety and device 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 resonance method is similar to the magnetic induction method in that is uses a magnetic field. However, 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
Provided are a wireless power transmitter including a power conversion unit configured to transfer wireless power to a wireless power receiver by forming magnetic coupling with the wireless power receiver; and a communication/control unit configured to communicate with the wireless power receiver to control transmission of the wireless power and to perform application level data communication, wherein the communication/control unit transmits or receives data stream comprising sequence of data packets carrying the application level data based on application level data transport stream, wherein the data stream comprises an auxiliary data control packet at the end of the data stream.