Wi-Fi Parameter Transmission via Audio Carrier Signal
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Solution Overview
Problem
Existing Wi-Fi network devices require manual reconfiguration of access parameters, such as passwords, whenever they change, leading to inconvenience and inefficiency in maintaining network connections.
Innovation Solution
A device and method for transmitting and receiving Wi-Fi parameters using a broadcast signal, where the Wi-Fi parameter transmitting device encrypts and modulates the parameters into a PCM signal, and the receiving device decrypts and extracts them, allowing automatic updates of network configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If Wi-Fi access parameter is changed, then network security is improved, but manual reconfiguration of each device is required which increases operation complexity and time consumption
Solution Approach 1:
The system enables automatic parameter distribution where the Wi-Fi access point autonomously pushes updated parameters to connected devices without requiring manual intervention. The devices automatically receive and apply the new parameters through the established communication channel, making the system self-configuring and eliminating manual reconfiguration work.
Solution Approach 2:
The system implements a feedback mechanism where devices report their parameter update status back to the access point. This allows the access point to track which devices have successfully updated and which need retransmission, ensuring complete parameter distribution across the network while maintaining security improvements.
2Reliability
If Wi-Fi access parameter is changed, then network security is improved, but time required for all devices to reconnect increases
Solution Approach 1:
The system performs preliminary action by pre-establishing a communication channel between the access point and devices during initial connection. When parameter changes are needed, the access point can immediately push updates through this pre-existing channel, eliminating the time required for devices to manually reconnect and significantly reducing reconnection time.
Solution Approach 2:
The system maintains continuous communication between the access point and devices through the audio-frequency carrier wave channel. This continuous connection allows parameter updates to be transmitted seamlessly without interrupting the network connection, ensuring that useful action (data transmission) continues uninterrupted while security parameters are updated.
3Extent of automation
If manual reconfiguration is required for each device, then parameter update control is precise, but device complexity and user burden increase
Solution Approach 1:
The system uses a universal communication channel (audio-frequency carrier wave) that can carry both control signals for parameter distribution and data transmission. This multi-functional channel simplifies the overall system architecture by eliminating the need for separate dedicated control channels, reducing device complexity while maintaining precise update control through the same interface.
Data Source
AI summary
A WI-FI parameter transmitting device can transmit a WI-FI parameter in the form of a broadcast signal, and includes an encryption module, a configuration module, a modulation module, and a play module. The encryption module obtains and encrypts the WI-FI parameter and the configuration module configures an encrypted WI-FI parameter and authorization information to generate WI-FI configuration information. The modulation module modulates the WI-FI configuration information with a carrier signal to generate a PCM signal and the play module plays the PCM signal in at least one predetermined frequency. A WI-FI parameter transmitting method and a WI-FI parameter receiving device and method are further provided.