Wi-Fi Roaming to Hidden Access Points via Pre-stored AP Data
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Solution Overview
Problem
Current Wi-Fi technologies face challenges in roaming to and connecting with hidden access points (APs), as terminals cannot detect and switch to hidden APs after they are hidden, leading to connectivity issues.
Innovation Solution
A method and terminal implementation that performs a Wi-Fi scan to match information of detected APs with pre-stored lists containing both unhidden and hidden APs, determining hidden APs as candidate APs for roaming based on matching criteria, such as SSID and signal strength, to enable connection to hidden APs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If APs are hidden to improve security, then security is improved, but terminals cannot detect and roam to these hidden APs
Solution Approach 1:
The terminal pre-stores information about hidden APs (such as SSID, BSSID, location) before they are hidden. When roaming is needed, the terminal compares current scan results with the pre-stored information to identify and connect to hidden APs, enabling roaming without requiring the APs to be visible during scanning
Solution Approach 2:
The patent introduces an intermediary mechanism where the terminal uses pre-stored AP information as a reference database to indirectly detect hidden APs that cannot be directly discovered through normal scanning. This intermediary information bridge allows the terminal to find hidden APs without them being visible in standard scans
2Adaptability or versatility
If terminals perform Wi-Fi scan to detect APs, then connectivity options are improved, but hidden APs cannot be detected
Solution Approach 1:
The terminal performs preliminary actions by pre-storing AP information (SSID, BSSID, location data) before the APs are hidden. This pre-stored information serves as a reference that enables the terminal to identify hidden APs during roaming by comparing current environment with stored data
Solution Approach 2:
Instead of trying to detect hidden APs through normal forward scanning methods, the patent inverts the approach by using pre-stored information to guide the search. The terminal looks for hidden APs by matching stored references against current scan results, rather than relying on hidden APs to be discoverable through standard scanning
3Ease of operation
If terminals roam to hidden APs, then roaming capability is improved, but connection reliability deteriorates due to inability to detect hidden APs
Solution Approach 1:
The terminal performs preliminary actions by pre-storing comprehensive AP information including SSID, BSSID, and location data before roaming. This pre-prepared information enables reliable identification of hidden APs during roaming, ensuring connection reliability is maintained while improving roaming capability
Data Source
AI summary
A method for Wi-Fi connection and related products are provided. The method includes the following. Wi-Fi scan is performed to obtain information of K APs, where K is a positive integer. Match the information of the K APs with information of P first APs in a first Wi-Fi list pre-stored, where the first Wi-Fi list contains the P first APs and Q second APs each marked as a hidden AP, and P and Q are both positive integers. The Q second APs are determined as candidate APs for roaming in response to a match between the information of the K APs and the information of the P first APs in the first Wi-Fi list.