Transceiver Beacon Coding for Authorized Wireless Power Identification
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Solution Overview
Problem
In wireless power delivery environments, wireless chargers often inadvertently direct power to unauthorized devices due to interference from other transmitters operating at the same frequency, leading to inefficient and inaccurate power distribution.
Innovation Solution
Encoding beacon signals with a transmission code specific to authorized clients, allowing the wireless charger to accurately identify and isolate the intended devices for power delivery, using techniques such as pseudorandom sequences to differentiate between authorized and unauthorized transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the wireless charger uses beacon signals to identify client devices, then power delivery accuracy improves, but interference from unauthorized transmitters operating at the same frequency causes power to be directed to incorrect devices
Solution Approach 1:
The beacon signal is segmented into multiple components including a unique transmission code that identifies authorized devices. The system divides the identification process into stages: initial beacon detection, transmission code verification, and authorization confirmation. This segmentation allows the wireless charger to distinguish between authorized and unauthorized devices even when multiple transmitters operate at the same frequency.
Solution Approach 2:
The system changes the parameter of the beacon signal by encoding it with a unique transmission code that varies between authorized devices. This parameter change (adding the transmission code) enables the wireless charger to differentiate between multiple client devices and prevent unauthorized devices from receiving power, thereby resolving the interference problem while maintaining identification accuracy.
2Productivity
If the wireless charger directs power to multiple client devices simultaneously, then power distribution efficiency improves, but interference between transmissions causes unauthorized devices to receive power
Solution Approach 1:
Before directing power to any client device, the wireless charger performs preliminary actions including detecting beacon signals, verifying transmission codes, and confirming device authorization. This preliminary verification process ensures that only authorized devices are selected for power delivery, preventing unauthorized devices from receiving power even when multiple devices are present in the environment.
Solution Approach 2:
The system implements feedback mechanisms where client devices transmit beacon signals that include their unique transmission codes. The wireless charger receives these signals, verifies the codes against authorized device lists, and provides feedback by directing power only to verified authorized devices. This feedback loop ensures accurate power distribution while preventing interference from unauthorized transmitters.
Data Source
AI summary
Technology including circuits, methods and computer readable media for operating a transceiver in a wireless signaling environment. A method includes the step of processing data representative of: a transmission code, and transmission scheduling information, assigned by a wireless system to a transceiver. The method includes the step of encoding, based on the processing, the data representative of the transmission code into a responsive signal. The method includes the step of directing at least one antenna to periodically transmit, according to the data representative of the transmission scheduling information, the responsive wireless signal to the wireless system to identify the transceiver to the wireless system.