WiFi SSID Random Number Near Field Data Exchange
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Solution Overview
Problem
Conventional near field information transmission methods, such as two-dimensional code scanning, GPS positioning, voice transmission, and manual input, are inconvenient and inaccurate due to complex operations, high requirements for data accuracy, and susceptibility to noise interference.
Innovation Solution
The method employs a personal hotspot's service set identifier (SSID) for near field information transmission, where a random number generated by the information system is used as the SSID, broadcast through a wireless communication protocol, allowing the information receiving client to acquire the SSID with the highest signal intensity without complex user operations, ensuring accurate and secure data transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If two-dimensional code scanning is used for near field information transmission, then information can be transmitted, but the operation becomes complex and requires light conditions
Solution Approach 1:
The patent replaces optical scanning mechanisms (camera-based 2D code scanning) with electromagnetic signal-based detection (WiFi signal strength detection). This substitution eliminates the need for light conditions and complex camera operations, while maintaining information transmission capability through automatic SSID matching.
Solution Approach 2:
The system enables automatic information transmission without manual intervention. The terminal automatically detects nearby terminals via WiFi signal strength, automatically matches SSIDs, and automatically completes information exchange, eliminating the need for manual code scanning or user operations.
2Measurement precision
If GPS positioning is used for near field information transmission, then location-based information can be transmitted, but data collection accuracy requirements are high and it is difficult to determine the transmitting party when parties are very close
Solution Approach 1:
The patent changes the detection parameter from GPS coordinates (latitude/longitude) to WiFi signal strength (RSSI). This parameter change enables accurate near-field detection without the high positioning accuracy requirements of GPS, as signal strength naturally decreases with distance and provides sufficient discrimination for nearby terminals.
Solution Approach 2:
Instead of using GPS to determine location and then identifying nearby terminals, the patent inverts the approach by using WiFi signal strength to directly identify the transmitting terminal. The terminal with the strongest signal is automatically identified as the transmitting party, eliminating the complexity of GPS-based proximity determination.
3Ease of operation
If voice transmission is used for near field information transmission, then information can be transmitted orally, but noise interference affects voice collection accuracy
Solution Approach 1:
The patent replaces acoustic transmission (voice) with electromagnetic transmission (WiFi signals). This substitution eliminates susceptibility to noise interference while maintaining automatic detection capability, as electromagnetic signals are not affected by acoustic environmental factors.
4Reliability
If manual input is used for near field information transmission, then information can be entered, but it is inconvenient and error-prone
Solution Approach 1:
The system automatically performs information exchange between terminals without manual input. The terminal automatically detects nearby terminals, matches SSIDs, and completes information transmission, eliminating manual typing errors and improving both convenience and accuracy.
Data Source
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AI summary
The present specification discloses a method comprising: providing a server; and providing a set of computer executable instructions configured to be installed on client devices, the set of computer executable instructions, when executed by a processing unit of a client device, configure the processing unit to implement at least one of an information transmitting client system and an information receiving client system; wherein the information transmitting client system is operable to: receive from the server a random number corresponding to a target information; and provide the random number for an information receiving client system of another client device to obtain; and wherein the information receiving client system of the other client device is operable to: obtain the random number; and receive from the server the target information through submitting the random number to the server..