Dynamic Band Balancing via BSS Transition Recommendations
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Solution Overview
Problem
Existing wireless local area network (WLAN) systems face challenges in dynamic band balancing, leading to congestion and degraded performance due to insufficient detection of client devices' capabilities across multiple radio bands during association, resulting in suboptimal throughput and capacity utilization.
Innovation Solution
An electronic device, such as an access point, uses an interface circuit to receive packets from associated client devices and determines the need for a Basic Service Set (BSS) transition from one radio band to another based on capacity and RSSI metrics, recommending channel changes and confirming client support for the new band through request and response packets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If band balancing is performed only during association, then the access point can initially distribute clients across bands, but it cannot respond to dynamically changing wireless environments
Solution Approach 1:
The patent implements dynamic band balancing by enabling the access point to perform band balancing operations both during association and after association. This allows the system to adapt to changing wireless environments in real-time, transitioning clients between 2.4 GHz and 5 GHz bands based on current network conditions, thereby resolving the contradiction between adaptability and productivity
2Ease of operation
If the access point steers electronic devices to radio band A by withholding probe and authentication responses in radio band B, then band balancing can be performed, but this approach fails when the access point does not receive wireless signals from the electronic device in all bands
Solution Approach 1:
The patent employs feedback mechanisms where the access point monitors received signal strength indicators (RSSI) from clients in different bands and uses this information to make informed band balancing decisions. The system requests and processes capability information from clients about their supported bands, ensuring reliable band balancing even when signals are not received in all bands during association
3Adaptability or versatility
If the access point requests capability information from the client device, then it can make informed band balancing decisions, but this requires additional communication overhead
Solution Approach 1:
The patent requests capability information from client devices during the association phase, before band balancing operations begin. This preliminary action ensures the access point has the necessary information about which bands each client supports, enabling informed band balancing decisions without requiring continuous capability queries during operation
Data Source
AI summary
During disclosed communication techniques, an electronic device (such as an access point) may receive one or more packets from another electronic device, where the other electronic device has an established connection or association with the electronic device, and the one or more packets are communicated using a first band of frequencies. Then, the electronic device may determine to recommend a basic service set (BSS) transition from the first band of frequencies to at least a second band of frequencies. Moreover, the electronic device may provide a request packet to the other electronic device with a recommendation with one or more candidates for the BSS transition, such as a channel in the second band of frequencies. Next, the electronic device may receive a response packet from the other electronic device, where the response packet indicates a remedial action of the other electronic device in response to the request packet.