IoT Channel Selection via Supervisory Classification
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Solution Overview
Problem
The proliferation of IoT devices in wireless networks leads to inefficient utilization of shared radio spectrum, as existing channel assignment methods prioritize high-capacity devices over low-bandwidth IoT clients, resulting in sub-optimal channel plans that fail to meet the quality of service (QoS) requirements of both IoT and high-efficiency (HE) clients.
Innovation Solution
A supervisory device classifies clients as IoT or non-IoT devices and adaptively assigns channel widths and channels to access points, using biasing techniques and dynamic bandwidth selection to prioritize smaller channel widths for IoT devices, thereby optimizing channel usage and maintaining QoS for both IoT and HE clients.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing channel assignment methods prioritize high-capacity devices, then high-efficiency clients achieve better performance, but IoT devices with low bandwidth requirements experience sub-optimal channel plans and QoS degradation
Solution Approach 1:
The patent applies local quality by differentiating channel assignment strategies based on client type. IoT clients receive optimized channel assignments tailored to their low-bandwidth requirements, while HE clients receive assignments optimized for high-capacity performance. This is achieved through classification of clients into IoT and HE categories, followed by type-specific channel selection that assigns narrower bandwidth channels to IoT devices and wider bandwidth channels to HE devices, thereby resolving the contradiction between overall network efficiency and IoT QoS reliability
Solution Approach 2:
The patent implements dynamics through adaptive channel width selection that adjusts based on client classification. The system dynamically determines appropriate channel widths (e.g., 20 MHz vs. 80 MHz) based on whether a client is identified as IoT or HE type. This dynamic adaptation allows the network to optimize channel plans in real-time according to the specific requirements of connected devices, improving both network efficiency and IoT QoS without sacrificing HE client performance
2Quantity of substance
If the number of IoT devices increases in wireless networks, then network coverage and device connectivity improve, but shared radio spectrum utilization becomes inefficient
Solution Approach 1:
The patent applies segmentation by dividing the wireless network into distinct client categories (IoT and HE). This segmentation allows the system to manage spectrum resources differently for each group: IoT devices are assigned to specific channels with narrower bandwidths that are more suitable for their low-data-rate applications, while HE devices receive wider bandwidth allocations. This segmentation resolves the spectrum utilization inefficiency caused by treating all devices uniformly, thereby maintaining high productivity even as the quantity of connected devices increases
3Reliability
If weather radar and military applications are given priority on certain 5 GHz channels, then those applications maintain reliable operation, but the set of available channels for wireless networks is further constrained
Solution Approach 1:
The patent applies inversion by reversing the traditional approach to channel selection. Instead of having devices compete for available channels or use fixed channel assignments, the system inverts the logic by having the network controller assign channels based on inverted priorities: IoT devices are deliberately assigned to narrower bandwidth channels that are less likely to conflict with radar applications, while HE devices receive wider bandwidth channels. This inverted assignment strategy increases adaptability by finding creative channel usage patterns that coexist with priority applications while maintaining network versatility
Data Source
AI summary
In one embodiment, a supervisory device for a wireless network classifies each client of a set of access points in the wireless network as either an Internet of Things (IoT) device or a non-IoT device. The supervisory device selects, for each of the access points in the set, a channel width based on the classifications of its clients. The supervisory device assigns, for each of the access points in the set, one or more wireless channels for use by that access point, based on the selected channel width for that access point. The supervisory device instructs the access points in the set to use their assigned channels to communicate with their clients.