Interference-Aware Wi-Fi Access Point Selection for Platform Noise
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Solution Overview
Problem
Platform-generated radio interference, particularly from components like DDR and LPDDR memories, negatively affects Wi-Fi and cellular performance in devices with small form factors, degrading wireless receiver sensitivity and downlink throughput, especially with the introduction of IEEE 802.11be and increasing memory performance.
Innovation Solution
A device and method for determining noise within Wi-Fi channels and selecting an AP or channel based on platform-generated interference, utilizing interference-aware AP selection or channel negotiation, considering workload-dependent noise characteristics and sharing this information with APs or cloud-based management services to optimize channel selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If memory performance is increased to improve data processing speed, then productivity is improved, but platform-generated radio interference increases degrading Wi-Fi performance
Solution Approach 1:
The system dynamically changes operational parameters by selecting different Wi-Fi channels based on detected interference levels. The interference-aware channel selection mechanism adjusts the frequency parameter to avoid platforms-generated noise, allowing high memory performance to be maintained while mitigating radio interference through parameter optimization.
2Ease of operation
If device form factor is reduced to improve portability, then ease of operation is improved, but platform noise increases due to closer proximity of antenna to noise sources
Solution Approach 1:
The interference-aware channel selection system compensates for the increased platform noise in compact devices by dynamically selecting optimal Wi-Fi channels. This parameter adjustment approach allows small form factor devices to maintain good Wi-Fi performance despite the unavoidable proximity of antenna to noise-generating components.
3Productivity
If Wi-Fi 7 multi-link operation is implemented to improve throughput, then productivity is improved, but noise mitigation becomes more challenging
Solution Approach 1:
The system extends interference-aware channel selection to multi-link operation by independently selecting optimal channels for each link. This parameter optimization approach enables Wi-Fi 7 MLO to achieve high throughput while systematically managing noise mitigation across multiple frequency bands, reducing the complexity of interference management.
Data Source
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AI summary
A device may include a modem and a processor. In a first configuration, the processor may be configured to cause the modem to establish a wireless connection to a first wireless access point; receive a wireless signal during a non-transmission period of the first wireless access point; determine a wireless signal indicator based on the wireless signal; determine an interference parameter; and select a second wireless access point based on the wireless signal indicator and the interference parameter. In a second configuration, the processor may be configured to cause the modem to connect to a wireless access point; receive a first wireless signal during a non-transmission period of the wireless access point; determine an interference parameter based on the wireless signal; and send a second wireless signal representing the interference parameter to the wireless access point.