Wireless Power Authentication via Bluetooth Out-of-Band Signaling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless power transmission systems lack an efficient method for performing an authentication phase through out-of-band communication, which is necessary to enhance the level of wireless power transmitted and received.
Innovation Solution
A wireless power transmission system that uses magnetic coupling to transmit power to a wireless power receiver, while also employing in-band and out-band communication, specifically using BLUETOOTH® communication, to perform an authentication phase. During this phase, an authentication message is included in a BLUETOOTH® packet and transmitted to the wireless power receiver, allowing for quicker authentication and potentially increasing the power transmission level.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If in-band communication using operating frequency is used for authentication, then power transmission can be established, but authentication speed is slow and system complexity increases
Solution Approach 1:
The patent introduces BLUETOOTH® out-of-band communication as an intermediary channel for authentication purposes. This separate communication path allows authentication messages to be exchanged independently from the power transmission channel, thereby speeding up authentication without interfering with the power transmission system's operation and reducing the complexity of the in-band communication protocol.
Solution Approach 2:
The communication function is segmented into two distinct channels: in-band communication for power transmission control and out-of-band BLUETOOTH® communication for authentication. This segmentation allows each channel to be optimized for its specific purpose, with BLUETOOTH® handling authentication quickly and efficiently while the in-band channel focuses on power management.
2Productivity
If authentication phase is performed through out-of-band communication, then authentication efficiency increases, but additional communication infrastructure is required
Solution Approach 1:
The patent leverages the universality of BLUETOOTH® technology, which is already widely integrated into modern wireless devices for other purposes. By utilizing this existing out-of-band communication infrastructure for authentication, the system gains improved authentication efficiency without requiring entirely new hardware, as BLUETOOTH® modules are already present in most smartphones and wireless devices.
3Power
If wireless power transmission level is increased, then power transfer capability improves, but authentication security requirements increase
Solution Approach 1:
The patent uses BLUETOOTH® out-of-band communication as a secure intermediary channel for exchanging authentication messages. This separate channel provides enhanced security for authentication purposes, ensuring that even as power transmission levels increase, the authentication process remains protected through a dedicated secure communication path that is independent from the power transmission channel.
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
The proposed solution enables a faster and more efficient authentication process, which can lead to an increased level of wireless power transmitted and received, thereby improving the overall performance of the wireless power transmission system.
Implementation Method 1
transmit the wireless power to the wireless power receiver by magnetic coupling with the wireless power receiver at an operating frequency
Implementation Method 2
receive the wireless power from the wireless power transmitter by magnetic coupling with the wireless power transmitter at an operating frequency
Data Source
AI summary
A wireless power transmission apparatus for transmitting wireless power to a wireless power reception apparatus, according to an embodiment of the present specification: transmits wireless power to the wireless power reception apparatus by means of magnetic coupling to the wireless power reception apparatus at an operating frequency; communicates with the wireless power reception apparatus by using at least one of in-band communication using the operating frequency and out-band communication using BLUETOOTH® communication; performs an authentication step with the wireless power reception apparatus to increase the level of the wireless power being transmitted to the wireless power reception apparatus; and includes, in a BLUETOOTH® packet, an authentication message required in the authentication step, and transmits the included authentication message to the wireless power reception apparatus via the BLUETOOTH® communication.