WLAN Terminal AP Discovery via Operator Identifier Filtering
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Solution Overview
Problem
Cellular network users face difficulties in efficiently searching for and accessing WLAN access points, leading to increased traffic and decreased user convenience due to the listing of multiple SSIDs from surrounding access points, which are not always desired.
Innovation Solution
A method and apparatus for a terminal to transmit a probe request frame with a specific identifier and receive a probe response frame from the corresponding access point, allowing the terminal to selectively access only the intended WLAN access point, reducing unnecessary traffic by filtering out unwanted access points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the terminal lists all SSIDs from surrounding access points during scan, then the terminal can discover all available WLAN access points, but the search traffic increases and user convenience deteriorates due to unwanted access points being listed
Solution Approach 1:
The patent extracts and removes unwanted access points from the scan results by filtering out SSIDs that do not match the user's selected operator identifier. This allows the terminal to maintain AP discovery capability while eliminating harmful traffic from irrelevant access points.
Solution Approach 2:
The patent applies local quality by customizing the scan results to match the user's specific operator preferences. Instead of uniformly listing all SSIDs, the system selectively includes only those SSIDs associated with the user's selected operator, creating a personalized scan result set.
2Adaptability or versatility
If the terminal lists all SSIDs from surrounding access points during scan, then the terminal can discover all available WLAN access points, but the quality of WLAN service deteriorates due to traffic from unwanted access points
Solution Approach 1:
The patent extracts and removes unwanted access points from the scan results by filtering out SSIDs that do not match the user's selected operator identifier. This allows the terminal to maintain AP discovery capability while eliminating harmful traffic from irrelevant access points.
Solution Approach 2:
The patent applies local quality by customizing the scan results to match the user's specific operator preferences. Instead of uniformly listing all SSIDs, the system selectively includes only those SSIDs associated with the user's selected operator, creating a personalized scan result set.
3Adaptability or versatility
If the terminal performs comprehensive AP scan, then the terminal can find any available access point, but the channel resources are consumed by search traffic instead of data transmission
Solution Approach 1:
The patent extracts and removes unwanted access points from the scan results by filtering out SSIDs that do not match the user's selected operator identifier. This allows the terminal to maintain AP discovery capability while eliminating harmful traffic from irrelevant access points.
Solution Approach 2:
The patent changes the parameter of scan result filtering by introducing operator identifier-based selection. This modifies the traditional comprehensive scan approach to selectively scan only for relevant access points, reducing channel resource consumption while maintaining adequate AP search coverage.
Data Source
AI summary
The present invention relates to a method and an apparatus for searching for an access point of a terminal in a wireless communication system, and the method for searching for an access point of a terminal in a wireless communication system according to the present invention comprises the steps of: transmitting a probe request frame including an identifier for searching for a specific access point; receiving a probe response frame transmitted from the access point related to the identifier; and connecting to the access point having transmitted the probe response frame.