Adaptive Platform Noise Mitigation for Wireless Devices
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Solution Overview
Problem
Platform noise from components like DDR memories and PCIe buses interferes with wireless devices, particularly in laptops and tablets, degrading Wi-Fi and cellular performance due to antenna noise imbalance and proximity to noise sources, which traditional methods like absorbers and adaptive clocking fail to adequately address in multi-radio and high-throughput scenarios.
Innovation Solution
Implementing real-time noise estimation and mitigation techniques at the wireless device, using eigen vector decomposition and spectral analysis to project signals away from noisy directions, adjust antenna gains, and apply spectral masks based on platform activity, leveraging machine learning for predictive noise characterization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If absorbers and EMI coating are added to shield noise sources, then platform noise is reduced, but manufacturing complexity and cost increase significantly
Solution Approach 1:
The patent replaces physical noise shielding mechanisms (absorbers, EMI coating) with a software-based noise mitigation system. The wireless device measures platform noise characteristics and applies signal processing techniques to mitigate the noise, eliminating the need for additional physical components and complex manufacturing processes.
Solution Approach 2:
The noise mitigation system is self-adaptive, automatically measuring platform noise characteristics and adjusting its mitigation strategy without requiring manual configuration or additional hardware. The system serves itself by using its own measurement capabilities to characterize and mitigate the noise it experiences.
2Reliability
If absorbers and EMI coating are applied to noise sources, then wireless receiver sensitivity is improved, but production time and cost increase
Solution Approach 1:
The patent performs preliminary noise characterization by measuring platform noise characteristics during device operation. This allows the system to proactively adapt to noise conditions and apply appropriate mitigation strategies, achieving sensitivity improvement without time-consuming post-production adjustments or rework.
Solution Approach 2:
The system dynamically changes operational parameters (signal processing filters, frequency selection, power levels) based on measured platform noise characteristics. This allows the wireless device to adapt to varying noise conditions in real-time without requiring physical modifications or extended production cycles.
3Reliability
If post-production patches and driver updates are implemented, then wireless performance is improved, but device complexity and update management become more difficult
Solution Approach 1:
The patent implements a dynamic noise mitigation system that continuously measures platform noise characteristics and adapts its behavior in real-time. This eliminates the need for static post-production patches and driver updates, as the system automatically adjusts to changing noise conditions through continuous measurement and adaptive signal processing.
Solution Approach 2:
The system incorporates feedback loops where the wireless device measures platform noise characteristics and uses this information to adjust its signal processing and transmission parameters. This closed-loop approach continuously optimizes wireless performance without requiring external patches or updates.
4Volume of moving object
If antenna proximity to noise sources is reduced for compact form factor, then device portability is improved, but platform noise interference increases
Solution Approach 1:
The patent replaces physical separation between antennas and noise sources (which would increase device size) with software-based noise mitigation. The system measures noise characteristics from platform components and applies signal processing to eliminate interference, allowing compact form factor without sacrificing wireless performance.
Solution Approach 2:
The system performs preliminary measurement of platform noise characteristics to identify noise sources and their impact on antenna signals. This enables proactive mitigation strategies that compensate for the close proximity of antennas to noise sources in compact devices, maintaining performance despite reduced physical separation.
Data Source
AI summary
A method and apparatus to estimate and mitigate platform noise incurred at a wireless device coupled to the platform. A computing device includes a platform including a first processor, a wireless device coupled to the platform, the wireless device including a second processor, and a plurality of antennas coupled to the wireless device. At least one of the first processor or the second processor is configured to determine characteristics of a platform noise incurred at the wireless device in real-time due to utilization of circuitries and processing components on the platform and implement an adaptive real-time and application/context-aware measure to mitigate the platform noise based on the determined characteristics of the platform noise.