Wireless Access Point Discovery via Root Node Registry
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Solution Overview
Problem
In wireless communication networks, the inability to automatically obtain BSSIDs of other access points due to security mechanisms and DFS channel restrictions leads to user inconvenience in selecting the best access point for connection.
Innovation Solution
A wireless communication method and device that establish a link with a root access point using the Wi-Fi Protected Setup (WPS) mechanism to obtain backhaul SSIDs and access point information, allowing for automatic selection of the best access point for connection without manual user input, even in scenarios where passive or active scanning is restricted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If access points use security mechanisms to hide backhaul SSID, then network security is improved, but automatic access point discovery is prevented
Solution Approach 1:
The patent introduces a root access point as an intermediary that stores and manages backhaul SSID information. Member access points can discover other member access points by querying the root access point, which acts as a central registry. This mediator enables automatic discovery while maintaining security by controlling who can access the hidden SSID information.
Solution Approach 2:
The system implements a feedback mechanism where member access points send requests to the root access point for available backhaul SSIDs, and the root access point responds with the appropriate information. This feedback loop enables automatic discovery without requiring member access points to actively scan or broadcast, thus preserving security while enabling functionality.
2Ease of operation
If access points use active scanning to find other access points, then access point discovery is improved, but radar operations may be interfered with on DFS channels
Solution Approach 1:
The patent extracts the active scanning function from member access points and relocates it to the root access point. The root access point maintains a database of member access point information and provides this information on request, eliminating the need for member access points to perform active scanning that could interfere with radar operations on DFS channels.
Solution Approach 2:
The root access point serves as an intermediary that centralizes the discovery function. Instead of member access points actively scanning the spectrum (which could cause radar interference), they query the root access point for available backhaul SSIDs, thereby avoiding harmful electromagnetic emissions while still achieving discovery.
3Measurement precision
If users manually input BSSID of access points, then connection accuracy is improved, but user convenience is reduced
Solution Approach 1:
The patent enables access points to automatically discover and select optimal backhaul connections without requiring manual user input. The member access points autonomously query the root access point for available backhaul SSIDs and automatically establish connections, making the system self-configuring and eliminating manual intervention while maintaining connection accuracy.
Solution Approach 2:
The root access point pre-collects and stores information about available member access points and their backhaul SSIDs. When a new member access point joins, it can immediately query this pre-prepared information and establish connections without requiring users to manually configure BSSIDs, thus combining automatic discovery with accurate connection establishment.
Data Source
AI summary
A wireless communication method used in a wireless communication device, wherein the wireless communication method includes the steps of: establishing a link with a first access point, and obtaining a backhaul SSID of a self-organizing network including the first access point from the first access point; referring to the backhaul SSID to obtain first access point information of the first access point and second access point information of a second access point within the self-organizing network, wherein each of the first access point information and the second access point information includes a BSSID; and selecting one of the first access point and the second access point to perform a wireless network connection according to the first access point information and the second access point information.