Wireless LAN Device Automatic Role Setting and Key Sharing
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Solution Overview
Problem
In wireless LAN systems, setting an asymmetric protocol between devices acting as repeaters or relaying devices can be cumbersome and difficult for users, as it requires manual configuration of access point-station relationships.
Innovation Solution
A wireless LAN device that automatically determines and sets roles for asymmetric protocols with other devices within its communication range using identification information, such as BSSID, and generates and shares encryption keys dynamically, eliminating the need for user intervention in setting encryption keys.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual configuration of access point-station relationships is performed to execute asymmetric protocols between wireless LAN devices, then protocol execution can be achieved, but user convenience deteriorates and operation becomes cumbersome
Solution Approach 1:
The wireless LAN device automatically determines its own role (access point or station) and configures asymmetric protocols without user intervention. The device uses its own identification information and obtains identification information from other devices to autonomously establish communication relationships, eliminating the need for manual configuration while maintaining proper protocol execution
Solution Approach 2:
The device performs preliminary role determination and configuration actions automatically during the communication establishment process. By pre-determining roles and configuring parameters before actual data transmission begins, the system avoids the need for post-configuration or manual setup, thereby improving ease of operation
2Ease of manufacture
If access point-station relationships are set in advance for asymmetric protocols, then protocol execution is enabled, but the ease of manufacture and deployment deteriorates
Solution Approach 1:
The wireless LAN device autonomously determines its role and configures asymmetric protocols without requiring pre-configuration or manual setup. The device uses its own identification information and automatically obtains identification information from other devices to establish communication relationships, eliminating deployment complexity while maintaining proper protocol execution
Solution Approach 2:
The device performs preliminary role determination and configuration actions automatically during the communication establishment process. By pre-determining roles and configuring parameters before actual data transmission begins, the system avoids the need for pre-configuration or manual setup, thereby improving ease of manufacture and deployment
3Reliability
If static encryption keys are used for security, then encryption can be performed, but security deteriorates due to predictability and ease of specification by malicious third parties
Solution Approach 1:
The system uses dynamic encryption keys that are automatically generated and exchanged between wireless LAN devices during the communication establishment process. The keys are derived from identification information and change based on the specific communication session, making them unpredictable to malicious third parties while eliminating the need for manual key management
Solution Approach 2:
The wireless LAN device autonomously generates and manages encryption keys using its own identification information. The device automatically obtains identification information from other devices and uses this information to derive shared encryption keys, eliminating the need for manual key setup while enhancing security through dynamic key generation
Data Source
AI summary
A wireless LAN device which performs wireless communication in a wireless network comprises: a communication section for performing the wireless communication such that a packet can be relayed in the wireless network; and a setting section for obtaining first identification information from another wireless LAN device present in a communicable state within a radio wave arrival range of the wireless LAN device, which first identification information can identify the other wireless LAN device, and setting a role for executing an asymmetric protocol asymmetric between the wireless LAN device and the other wireless LAN device, the role being set based on the first identification information, and second identification information, stored in the wireless LAN device, that can identify the wireless LAN device. The wireless LAN device shares an encryption key, based on the set role, and relays a packet by encrypting the packet by using the encryption key.