Wireless LAN Access Point Maintenance SSID IP Assignment
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Solution Overview
Problem
Conventional wireless LAN access points, especially those in mesh networks without a wired connection, face challenges in setting confirmation and change without a display unit or serial interface, requiring laborious cable connections and serial ports, and cannot establish communication when the IP address is forgotten.
Innovation Solution
A wireless communication system that uses a maintenance SSID, such as the MAC address, to release an IP address to a wireless LAN station, allowing setting confirmation and change through IP communication without a serial console or reset button, enabling wireless LAN connectivity and eliminating the need for cable connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a serial console or cable connection is used to confirm/change settings, then communication with the wireless LAN access point can be established, but the operation becomes laborious and requires physical connection
Solution Approach 1:
The patent replaces the mechanical cable connection and serial console interface with wireless communication. The maintenance terminal connects to the wireless LAN access point through wireless signals instead of physical cables, eliminating the need for manual cable plugging and serial port connections while maintaining reliable communication for setting confirmation and changes.
2Reliability
If a reset button is used to restore default settings, then communication can be re-established, but the operation must be suspended and current settings are lost
Solution Approach 1:
The patent implements preliminary action by pre-configuring a default SSID and IP address assignment mechanism before normal operation. When setting confirmation is needed, the maintenance terminal can directly connect using the pre-set SSID and receive an automatically assigned IP address, eliminating the need to suspend operation and press reset buttons to restore default settings.
3Ease of manufacture
If multiple wireless LAN access points have the same default IP address, then they can be configured easily, but identification and connection to the target access point becomes difficult
Solution Approach 1:
The patent implements feedback by having the wireless LAN access point transmit its identification information (such as BSSID or MAC address) to the maintenance terminal during the connection process. The maintenance terminal receives this feedback information and uses it to identify and distinguish between multiple access points, enabling accurate selection and connection to the target access point even when multiple access points share the same default IP address configuration.
Data Source
AI summary
There is provided a wireless LAN access point capable of confirming and changing the setting using the IP communication for a target wireless LAN access point positively even when the IP address of the wireless LAN access point is forgotten. The wireless LAN access point, upon receipt of a probe request, transmits a probe response while at the same time starting to transmit a beacon frame required to be periodically transmitted. The wireless LAN access point starts the DHCP server therein at the same time that the process of associating the wireless LAN station is started. The DHCP server operates only for the wireless interface of the wireless LAN access point and the wireless LAN station associated by use of the maintenance SSID. The wireless LAN access point, upon complete association of the wireless LAN station with the local access point, leases the IP address to the wireless LAN station from the DHCP server in the particular local access point.