Multi-Link Device Radio Interference Reduction via Beamwidth Control
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Solution Overview
Problem
Multi-link devices experience interference and leakage between radios due to physical proximity, leading to reduced performance and increased power consumption, despite communicating over different bands or channels.
Innovation Solution
The multi-link device measures interference between radios and repeatedly narrows the transmission beam width until the interference falls below a threshold, optionally tilting or reducing the radio's transmission power to minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple radios communicate simultaneously over different bands or channels, then throughput is increased, but interference and power leakage between radios occur due to physical proximity
Solution Approach 1:
The patent applies local quality by adjusting beamforming parameters specifically for radios experiencing interference, rather than uniformly affecting all radios. The beamwidth and tilt are locally optimized for each radio link to minimize leakage to adjacent radios while maintaining communication performance.
Solution Approach 2:
The patent changes physical parameters of the radio beams, specifically beamwidth and tilt angle, to reduce interference. By dynamically adjusting these parameters based on measured interference levels, the system optimizes the balance between throughput and interference reduction.
2Object-generated harmful factors
If beam width is narrowed to reduce interference, then power leakage decreases, but coverage area and signal strength may be reduced
Solution Approach 1:
The patent implements dynamic adjustment of beam parameters, continuously monitoring interference levels and adapting beamwidth and tilt in real-time. This allows the system to optimize for low interference when needed while maintaining broader coverage when interference is minimal, rather than using fixed parameters.
Solution Approach 2:
The system employs feedback mechanisms where interference measurements from receiving radios are used to adjust transmitting radio beam parameters. This closed-loop control ensures that beam narrowing is applied only when and where interference occurs, maintaining signal strength and coverage in other directions.
Data Source
AI summary
A method includes measuring an interference caused by a first radio in a multi-link device to a second radio of the multi-link device and in response to determining that the interference exceeds a threshold, repeatedly narrowing a transmission beam width of the first radio until the interference falls below the threshold.