WLAN Access Point Channel Selection via Terminal Feedback
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Solution Overview
Problem
In Wireless Local Area Networks (WLANs), the limited available bandwidth due to multiple Access Points (APs) operating on the same channel within a terminal's sensing range leads to interference and reduced service quality, with existing solutions failing to effectively manage channel selection to mitigate these issues.
Innovation Solution
A method where Access Points (APs) receive network conditions from terminals within their sensing range, allowing them to select channels that minimize conflicts and optimize bandwidth, involving the collection, transmission, and analysis of network conditions to choose channels with fewer APs operating, thereby reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple APs independently select channels based on their own sensing range, then each AP can operate autonomously, but terminals experience interference from multiple APs on the same channel
Solution Approach 1:
The terminal acts as an intermediary that collects channel sensing information from multiple APs and relays it to them. This allows APs to make informed channel selection decisions based on terminal's comprehensive view, resolving the contradiction between autonomous operation and interference avoidance
Solution Approach 2:
The terminal provides feedback to APs about the channels detected by other APs within its sensing range. This feedback mechanism enables APs to adjust their channel selection to avoid conflicts, maintaining autonomous operation while preventing terminal interference
2Productivity
If APs monitor channels used by other APs and select channels with fewest APs, then channel conflicts are reduced, but terminals still experience interference when multiple APs are selected by the same terminal
Solution Approach 1:
The terminal serves as a mediator that aggregates channel information from multiple APs and communicates it back to them. This enables APs to consider the terminal's perspective when selecting channels, ensuring that terminals are not subjected to interference from multiple APs on the same channel
Solution Approach 2:
The solution adds a new dimension to channel selection by considering terminal sensing range in addition to AP sensing range. This dimensional expansion allows the system to optimize channel allocation from the terminal's perspective, reducing interference while maintaining efficient channel utilization
Data Source
AI summary
A method for selecting a channel for an access point (AP) in a Wireless Local Area Network (WLAN). The method includes the AP receiving network conditions of APs within the sensing range of a terminal sent by the terminal, and the AP selecting a channel based on the received network conditions. By forwarding the network conditions of other APs which can be detected by the terminal, the method of the present invention enables an AP to select a channel from the view of a terminal to avoid conflicts at the terminal, thereby improving the available bandwidth of the terminal, and giving a better experience to users.