IoT Traffic Identifier Mapping to Minimize Wi‑Fi Band Switching
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Solution Overview
Problem
Conventional TID-to-link mapping in Wi-Fi 7 is inefficient for IoT devices due to increased power consumption and overhead from frequent switching between frequency bands, which contradicts their low-power design principles and degrades network performance.
Innovation Solution
Dynamic TID mapping for IoT devices, either by creating a new TID or assigning to a predefined TID, consolidating IoT traffic on a single frequency band to minimize switching, optimizing power usage and network performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional TID-to-link mapping is used for IoT devices, then traffic management capability is improved, but power consumption increases due to frequent switching between frequency bands
Solution Approach 1:
The patent segments IoT traffic from non-IoT traffic by assigning them to different TIDs with different link mapping configurations. IoT traffic is assigned to a dedicated TID that maps to a single frequency band (e.g., 2.4 GHz), while non-IoT traffic uses conventional multi-link mapping. This segmentation allows IoT devices to operate on a single band without frequent switching, reducing power consumption while maintaining efficient traffic management for other devices.
Solution Approach 2:
The patent implements dynamic TID-to-link mapping that adapts based on device type. The access point dynamically assigns different mapping configurations: conventional multi-link mapping for non-IoT devices and single-band mapping for IoT devices. This dynamic adaptation resolves the contradiction by providing traffic management flexibility only where needed while conserving power for IoT devices.
2Adaptability or versatility
If conventional TID-to-link mapping is used for IoT devices, then network coverage and compatibility are improved, but operational overhead increases due to frequent link switching
Solution Approach 1:
The patent segments the network into different operational modes based on device type. IoT devices operate in a simplified single-band mode with dedicated TIDs, while non-IoT devices use the full multi-link capability. This segmentation reduces operational overhead for IoT devices by eliminating frequent link switching, while preserving comprehensive network coverage and compatibility through multi-link operation for other devices.
3Use of energy by moving object
If single-band mapping is used for IoT devices, then power consumption is reduced, but traffic prioritization capability is worsened
Solution Approach 1:
The patent segments traffic into IoT traffic and non-IoT traffic with different prioritization requirements. IoT traffic, which typically has less stringent latency requirements, is assigned to single-band TIDs for power efficiency. Non-IoT traffic, including time-sensitive applications, retains access to multi-link prioritization mechanisms. This segmentation resolves the contradiction by applying traffic prioritization only where necessary while enabling power savings for IoT devices.
Data Source
AI summary
Techniques for dynamic TID mapping are provided. A network device creates an Internet-of-things (IoT) traffic identifier (TID) for IoT traffic. The network device determines a first operational spectrum for the IoT TID. The network device maps the IoT TID to access one or more links operating on the first operational spectrum, between the network device and the IoT device. The network device communicates the TID and the one or more links to the IoT device.