Interference-Aware Access Point and Channel Selection for Platform Noise
Find Innovative SolutionsGenerate Solutions
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, using 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 wireless receiver sensitivity and Wi-Fi performance
Solution Approach 1:
The system performs preliminary actions by measuring and characterizing platform noise before Wi-Fi operation begins. The device measures noise characteristics during different workload conditions and stores this information in a lookup table. When Wi-Fi connection is established, the system queries the pre-measured noise characteristics to determine appropriate channel selections, avoiding the need for real-time noise cancellation while still achieving interference avoidance.
Solution Approach 2:
The system implements feedback mechanisms where the device continuously monitors platform noise characteristics during different workloads and uses this information to adjust Wi-Fi channel selections. The measured noise levels and channel interference patterns are fed back into the channel selection algorithm, creating an adaptive system that learns from actual noise conditions to optimize wireless performance under varying memory workload conditions.
2Ease of operation
If device form factor is reduced to improve portability, then ease of operation is improved, but platform-generated radio interference increases due to close proximity of antenna to noise sources
Solution Approach 1:
For compact devices with fixed antenna placements close to noise sources, the system performs preliminary noise characterization measurements during manufacturing and under various workload conditions. These pre-measured noise profiles are stored and used to determine optimal channel selections before actual Wi-Fi operation begins, allowing the device to compensate for its compact form factor without requiring physical antenna relocation.
Solution Approach 2:
The system changes operational parameters by dynamically selecting different Wi-Fi channels based on measured platform noise characteristics. Instead of physically reconfiguring the antenna placement or device hardware, the system adjusts the frequency channel parameter to move the operating spectrum away from noisy regions, effectively mitigating interference while maintaining the compact device form factor.
3Productivity
If Wi-Fi operates in 6-7 GHz band to improve bandwidth capacity, then productivity is improved, but interference from DDR and LPDDR memories increases in the same band
Solution Approach 1:
The system performs preliminary measurements of memory noise characteristics in the 6-7 GHz band during different workload conditions and stores these profiles in a lookup table. When channel selection is needed, the system queries pre-characterized noise data rather than performing real-time analysis, enabling rapid identification of clean channels in the high-frequency band while avoiding real-time computational complexity.
Solution Approach 2:
The system continuously monitors interference levels in the 6-7 GHz band and uses this feedback to adjust channel selections dynamically. When memory workloads generate interference in expected frequency ranges, the feedback mechanism triggers channel switching to alternative frequencies within the 6-7 GHz band that have lower interference levels, maintaining high bandwidth capacity while adapting to changing memory interference conditions.
4Adaptability or versatility
If multi-link operation is implemented to improve connectivity flexibility, then adaptability is improved, but noise mitigation becomes more challenging across different bands
Solution Approach 1:
The system segments the noise mitigation task by handling different frequency bands independently. Separate noise characterization and channel selection processes are implemented for 2.4 GHz, 5 GHz, and 6-7 GHz bands. Each band has its own noise profiles and selection algorithms, allowing the system to manage complexity through modular band-specific processing while maintaining overall adaptability across multiple links and bands.
Data Source
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.