Wi-Fi Query Frame Exchange for Faster Access-Point Discovery
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Solution Overview
Problem
Wi-Fi communication is hindered by time-consuming active and passive over-the-air (OTA) scanning for access-point discovery, especially when multiple access points are in proximity, leading to increased management frame overhead.
Innovation Solution
An electronic device communicates a query frame to request information about neighboring access points, receiving a response frame that includes second information to facilitate faster and more efficient access-point discovery, reducing the duration of OTA scans and management overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If active or passive over-the-air scanning is used for access-point discovery, then access points can be discovered, but the scanning process is time-consuming and generates additional management frame overhead
Solution Approach 1:
The patent introduces a query frame as an intermediary mechanism that enables a first electronic device to request access-point information from a second electronic device. This intermediary query-response frame exchange replaces traditional direct OTA scanning, allowing efficient information retrieval without time-consuming over-the-air scanning procedures.
Solution Approach 2:
The system performs preliminary action by having the second electronic device prepare and store access-point information in advance. When a query frame is received, the second electronic device can immediately provide pre-prepared information about neighboring access points, eliminating the need for real-time scanning during the query-response exchange.
2Adaptability or versatility
If multiple access points are present in proximity, then more network options are available, but management frame overhead increases
Solution Approach 1:
The patent extracts essential access-point information (such as BSSID, channel, and status) from the complex management frames and incorporates it into a dedicated query frame structure. This extraction allows the system to request and transmit only the necessary information about multiple access points, reducing overall management frame overhead while maintaining comprehensive network awareness.
Solution Approach 2:
The query frame serves multiple functions simultaneously: it requests access-point information, specifies search criteria (such as BSSID patterns or channel ranges), and receives comprehensive neighbor reports. This multi-functional approach consolidates what would otherwise require multiple separate management frames into a single efficient exchange.
Data Source
AI summary
An electronic device is described. This electronic device can include: an antenna node communicatively coupled to an antenna; and an interface circuit, communicatively coupled to the antenna node, that communicates with a second electronic device. During operation, the interface circuit can provide, addressed to at least the second electronic device, a query frame, where the query frame requests information about one or more access points in a neighborhood in a network. Then, the interface circuit can receive, associated with the second electronic device, a response frame based at least in part on the query frame, where the response frame includes second information about the one or more second access points in the neighborhood in the network.