Wi-Fi AP SSID Hiding for Stronger STA Roaming
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Solution Overview
Problem
In wireless local area networks, smart home devices with limited active network selection capabilities often connect to APs with weak Wi-Fi signals, degrading user experience.
Innovation Solution
An AP determines and communicates with other APs to hide their SSIDs in beacon frames, except for those with stronger signals, guiding the STA to switch to these stronger APs, and adjusts this behavior based on timers and management frame responses to optimize connection success.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the STA autonomously selects an AP based on its own connection algorithm, then the STA can independently access the network, but the STA may connect to an AP with weak Wi-Fi signal, degrading user experience
Solution Approach 1:
The patent introduces a network manager as an intermediary component that collects RSSI information from multiple APs and provides guidance to the STA. The network manager acts as a mediator between the STA's autonomous selection capability and the need for optimal connection quality, resolving the contradiction by enabling informed decision-making without compromising independence
Solution Approach 2:
The system implements feedback mechanisms where the network manager continuously monitors RSSI values from multiple APs and provides real-time guidance to the STA. This feedback loop enables the STA to adjust its connection decisions based on current signal conditions, ensuring both autonomous operation and connection quality
2Adaptability or versatility
If all APs broadcast their SSIDs in beacon frames, then all APs are visible to STAs for selection, but STAs with limited capabilities cannot distinguish between strong and weak signal APs, leading to poor connection choices
Solution Approach 1:
The patent applies local quality by differentiating the visibility status of different APs based on their signal strength. APs with strong signals (second APs) maintain visible SSIDs, while APs with weak signals (third and fourth APs) hide their SSIDs. This localized differentiation enables STAs to naturally select optimal APs without complex measurement capabilities
Solution Approach 2:
The system changes the 'visibility color' of APs dynamically - strong signal APs remain 'visible' (SSID broadcast), while weak signal APs become 'invisible' (SSID hidden). This visual metaphor simplifies the selection process for STAs, making signal quality discrimination intuitive without requiring precise measurement capabilities
3Reliability
If the system hides SSIDs of APs with weak signals to guide STA connection, then connection success rate to strong APs improves, but other STAs may be unable to find and connect to hidden APs
Solution Approach 1:
The system dynamically adjusts SSID visibility based on real-time connection status and signal conditions. When a strong AP becomes available, weak signal APs hide their SSIDs to guide connections. When strong APs are unavailable or load increases, the system restores visibility. This dynamic adaptation resolves the contradiction between guiding connections and maintaining network accessibility
Solution Approach 2:
The network manager periodically evaluates connection conditions and adjusts SSID visibility accordingly. Through periodic assessment of RSSI values and connection status, the system rhythmically switches between guidance mode (hiding weak APs) and accessibility mode (showing all APs), ensuring both connection success and network productivity
Data Source
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Figure 1b
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AI summary
An information transmission method and a related apparatus are provided. In the method, a first AP determines k second APs from m APs, where the m APs include the first AP, an RSSI corresponding to each of the k second APs is greater than an RSSI corresponding to a third AP, the third AP is an AP currently connected to a STA, the RSSI corresponding to the second AP is an RSSI for the second AP to receive a signal from the STA, and the RSSI corresponding to the third AP is an RSSI for the third AP to receive a signal from the STA. The first AP sends first information to n fourth APs, where the n fourth APs are all APs other than the first AP and the k second APs in the m APs, and the first information indicates the fourth APs to hide an SSID in a broadcast beacon frame. This manner helps increase a success rate of switching the STA from the third AP to the second AP with a stronger network signal, and improve user experience.