Wi-Fi Controller Probe Response Delay for Microcell Station Assignment
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Solution Overview
Problem
In a microcell Wi-Fi environment, the current management of station connectivity is inadequate, leading to imbalanced network performance due to end-point controlled connections, which is exacerbated by the increasing number of mobile devices connecting to the network autonomously.
Innovation Solution
A Wi-Fi controller is used to manage a plurality of access points with a probe-if-assigned setting that delays probe responses, allowing for optimal selection of access points based on RSSI measurements, thereby improving network performance by assigning stations to the best-serving access points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If stations autonomously control connections to access points, then ease of operation is improved, but network balance and performance deteriorate
Solution Approach 1:
The patent introduces a controller as an intermediary between stations and access points. The controller receives probe requests from stations, determines optimal access point assignments based on network conditions, and directs access points to respond to specific stations. This intermediary mechanism maintains autonomous station operation while enabling centralized network optimization, resolving the contradiction between ease of operation and network performance.
2Adaptability or versatility
If multiple access points respond to probe requests simultaneously, then adaptability is improved, but network balance deteriorates
Solution Approach 1:
The controller performs preliminary actions by receiving and processing probe requests before access points respond. It pre-determines the optimal access point assignment based on current network conditions, then directs only the selected access point to respond to the station's probe request. This preliminary control mechanism ensures both adaptability in selection and balance in network distribution.
3Speed
If access points respond immediately to probe requests, then speed is improved, but assignment optimality deteriorates
Solution Approach 1:
The controller performs preliminary determination of optimal access point assignments before the actual connection response. By processing probe requests centrally and pre-calculating optimal assignments based on network conditions, the system maintains fast connection establishment while ensuring assignment optimality. The controller's preliminary action eliminates the need for stations to independently evaluate multiple access points, achieving both speed and precision.
Data Source
AI summary
In a microcell environment, access points with a probe-if-assigned setting configured to delay probe responses to probe requests is registered and managed by a Wi-Fi controller. Probe requests are received and forwarded from at least two of the plurality of access points from a specific station attempting to connect to the Wi-Fi communication network. A Wi-Fi assignment module receives RSSI measurements from the at least two access points with respect to the specific access point, during a delay from the probe-if-assigned setting. A specific access point is assigned to the specific station for sending a probe response once a delay period expires.