Dynamic Subband Allocation for Mixed-Bandwidth AP Client Channels
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Solution Overview
Problem
The mismatch in bandwidth capabilities between access points (APs) and non-AP devices, such as client devices, results in wastage of bandwidth capabilities due to hardware limitations, leading to inefficient resource utilization and system performance.
Innovation Solution
Implementing Dynamic Subband Operation (DSO) that allows access points to dynamically allocate client devices to primary or secondary channels based on bandwidth availability and quality of service parameters, enabling better resource utilization and system performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If access points use wider bandwidth channels, then system performance and network efficiency are improved, but compatibility with non-AP devices having narrower bandwidth capabilities deteriorates
Solution Approach 1:
The patent divides the 320 MHz bandwidth channel into two 160 MHz subchannels (primary and secondary). The access point can dynamically allocate client devices to either the primary or secondary subchannel based on the client's bandwidth capability. This segmentation allows wide-bandwidth APs to maintain high performance on the primary subchannel while providing compatibility with narrow-bandwidth devices on the secondary subchannel.
Solution Approach 2:
The patent implements dynamic subchannel allocation where the access point can switch client devices between primary and secondary 160 MHz subchannels based on real-time bandwidth availability and quality of service parameters. This dynamic operation enables the system to adapt to varying bandwidth capabilities of different client devices, resolving the contradiction between maintaining high system performance and ensuring broad compatibility.
2Ease of operation
If access points allocate all client devices to primary bandwidth channel, then easier operation is achieved, but resource utilization efficiency deteriorates due to bandwidth capability wastage
Solution Approach 1:
The patent applies local quality by allocating different subchannels to different client devices based on their specific bandwidth capabilities. High-bandwidth-capable devices are allocated to the primary 160 MHz subchannel to utilize full bandwidth potential, while low-bandwidth-capable devices are allocated to the secondary 160 MHz subchannel. This differentiated allocation eliminates bandwidth capability wastage while maintaining operational simplicity through automated AP-controlled assignment.
Solution Approach 2:
The access point automatically performs bandwidth capability assessment and subchannel allocation without requiring manual configuration. The system self-adjusts by monitoring client device bandwidth capabilities and dynamically assigning appropriate subchannels, thereby eliminating bandwidth wastage while keeping the operation simple and transparent to users.
3Productivity
If access points dynamically allocate clients to different subchannels, then resource utilization is improved, but device complexity increases
Solution Approach 1:
The patent merges the bandwidth capability assessment function, subchannel allocation decision-making, and client device management into a single integrated access point controller. This consolidation enables dynamic subchannel allocation that improves resource utilization while avoiding the complexity of separate distributed control mechanisms. The unified approach allows the AP to efficiently manage multiple client devices across primary and secondary subchannels through centralized intelligence.
Data Source
AI summary
Systems, devices, methods, and computer-readable storage media of channel switching. One device for channel switching includes a memory and at least one processor. The at least one processor is configured to communicatively couple with one or more client devices, using one of a primary bandwidth channel or a secondary bandwidth channel and transmit a first trigger on at least the primary bandwidth channel to at least a first client device of the one or more client devices based on at least one of (i) a bandwidth availability (ii) a quality of service parameter, or (iii) a secondary bandwidth switching capability, wherein the first client device switches from the primary bandwidth channel to the secondary bandwidth channel in response to the first trigger.