Wireless LAN Access Point Signal Strength Authentication
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Solution Overview
Problem
Existing wireless LAN connection methods lack effective security measures, allowing unauthorized users to access networks by not requiring passwords, leading to potential misuse of resources, especially in scenarios where users are unaware of or hesitant to set passwords.
Innovation Solution
A wireless LAN connection method that utilizes signal strength to determine authorized access, where only terminals with signal strength equal to or greater than a predetermined threshold are registered and allowed to connect, eliminating the need for explicit authentication information like passwords.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If no password is set for security simplification, then ease of operation is improved, but reliability deteriorates due to unauthorized access
Solution Approach 1:
The patent changes the authentication parameter from password-based to signal strength-based. Instead of requiring users to input passwords, the system measures the signal strength (RSSI) of connection requests and compares it against a predetermined threshold. Terminals with signal strength meeting or exceeding the threshold are granted connection permission, while others are rejected. This parameter change resolves the contradiction by maintaining security (reliability) through automatic signal strength verification while eliminating password input requirements (improving ease of operation).
Solution Approach 2:
The access point performs automatic authentication by measuring signal strength and comparing it with the threshold without requiring user intervention for password input. The system autonomously determines whether to permit or reject connection based on the measured signal strength, eliminating the need for manual password setup and verification while maintaining security controls.
2Reliability
If signal strength threshold authentication is implemented, then reliability is improved by preventing unauthorized access, but device complexity increases due to additional measurement and comparison functions
Solution Approach 1:
The patent replaces the mechanical/password-based authentication system with a signal strength-based system. Instead of requiring users to manually input and verify passwords, the access point automatically measures the signal strength of connection requests using wireless signal measurement capabilities already present in standard Wi-Fi hardware. This substitution reduces device complexity by utilizing existing hardware functions rather than adding separate authentication mechanisms.
3Ease of operation
If user input units and display units are added for password input, then ease of operation is improved, but manufacturing cost increases
Solution Approach 1:
The patent extracts and removes the password input and display functions from the terminal device. Instead of requiring users to input passwords through user input units and see feedback through display units, the authentication is performed automatically by the access point based on signal strength measurement. This extraction eliminates the need for additional user interface components, reducing manufacturing costs while maintaining ease of operation.
Data Source
AI summary
A wireless LAN connection method using signal strength is provided. The wireless LAN connection method is carried out by an access point, and includes the steps of: measuring wireless signal strength of a signal which is received from a terminal having transmitted a connection request; determining whether the wireless signal strength is equal to or greater than a predetermined threshold; checking whether the terminal is registered in an available list which is information on terminals having had signal strength equal to or greater than the predetermined threshold when the wireless signal strength is less than the predetermined threshold; and permitting connection of the terminal to a wireless LAN only when the terminal is registered in the available list.