Wireless Authentication via Space-Fingerprinted Time-Varying Codes
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Solution Overview
Problem
Conventional wireless communication systems, such as those using the IEEE 802.11 standard, require cumbersome authentication processes for temporary connections between terminal devices in confined areas like meeting rooms, which hinders convenience and efficiency, especially when devices are moved or used in temporary configurations.
Innovation Solution
A wireless communication system employing code transmitters that emit time-varying codes, allowing code receivers to generate unique fingerprints for a space, which terminal devices can use for authentication via wireless communication, eliminating the need for manual PIN codes and ensuring secure connections only within a defined physical range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional wireless authentication methods (IEEE 802.11) are used, then security function is provided, but authentication process becomes cumbersome and time-consuming
Solution Approach 1:
The system enables automatic authentication where terminal devices autonomously perform authentication by detecting and comparing fingerprints generated from time-varying codes transmitted by code transmitters. The authentication process occurs automatically without requiring manual user intervention, thereby reducing authentication time while maintaining security.
Solution Approach 2:
Code transmitters continuously transmit time-varying codes in advance, and code receivers continuously generate fingerprints from these codes before authentication is needed. This preliminary continuous transmission and generation of authentication data enables rapid authentication when terminal devices need to connect, eliminating the need for manual PIN entry.
2Reliability
If manual PIN code exchange is required, then authentication security is ensured, but ease of operation deteriorates
Solution Approach 1:
The authentication system operates autonomously without requiring manual user actions. Terminal devices automatically detect fingerprints from code transmitters, compare them with stored fingerprints, and complete authentication without user intervention, thereby significantly improving ease of operation while maintaining security through automated fingerprint verification.
Solution Approach 2:
The patent replaces the mechanical/manual process of entering and exchanging PIN codes with an automated optical/electromagnetic system. Code transmitters emit time-varying codes that are detected by code receivers, which generate fingerprints automatically. This substitution eliminates manual operation while maintaining authentication security through automated biometric-like verification.
3Measurement precision
If positional information is stored in advance in equipment lists, then device identification is enabled, but adaptability deteriorates when devices are relocated
Solution Approach 1:
The system transitions from static pre-stored positional information to dynamic real-time fingerprint generation. Code transmitters continuously transmit time-varying codes, and code receivers continuously generate updated fingerprints based on current conditions. This dynamic approach automatically adapts to device relocation without requiring updates to equipment lists, as the fingerprint generation continuously reflects current positional and environmental conditions.
Solution Approach 2:
The patent changes the authentication parameter from static positional data to dynamic time-varying codes and corresponding fingerprints. The time-varying codes change over time, and the fingerprints are regenerated continuously based on current code transmissions. This parameter change enables the system to adapt automatically to device relocation and environmental changes while maintaining accurate device identification through the unique fingerprint signature.
4Device complexity
If indefinite connection range is used, then device connectivity is simplified, but security function deteriorates
Solution Approach 1:
The patent introduces code transmitters and code receivers as intermediary elements that mediate between terminal devices. These intermediaries generate and verify fingerprints based on time-varying codes, creating a security layer that automatically defines connection range. The intermediary system simplifies the overall connection process while providing robust security through automated fingerprint verification, eliminating the need for manual security configuration.
Data Source
AI summary
A wireless communication system includes code transmitters (20a, 20b) each configured to transmit a time-varying code; code receivers (30a, 30b) each configured to receive the time-varying codes transmitted from the code transmitters (20a, 20b) and generate a fingerprint based on the received time-varying codes, the fingerprint being unique to a space where the time-varying codes are receivable; and terminal devices (40a, 40b) configured to establish wireless communication connection therebetween with authentication. The terminal devices (40a, 40b) are connected to the code receivers (30a, 30b), respectively. Each terminal device (40a, 40b) includes a fingerprint acquiring unit configured to acquire the fingerprint from the code receiver (30a, 30b), a wireless communication unit configured to transmit and receive the fingerprint via wireless communication, and an authentication unit configured to authenticate another terminal device if the fingerprint received from the another terminal device matches the fingerprint acquired from the code receiver connected thereto.