Co-existence Manager for Dual-Technology Wireless Interference
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Solution Overview
Problem
Wireless communication devices with multiple RF chains face interference issues due to close proximity of antennas, leading to receiver desensitization, battery current limitations, and concurrent transmission challenges, which affect signal decoding and network performance.
Innovation Solution
A co-existence manager is implemented within the device's software and hardware to predict potential interference between radio technologies, prioritize communications, and select optimal channels to minimize interference by shifting lower priority communications to higher power channels, ensuring concurrent communications occur without interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple RF chains are placed in close proximity to enable concurrent communication operations, then device functionality and communication capability are improved, but receiver desensitization and signal interference occur
Solution Approach 1:
The system performs preliminary interference prediction before executing concurrent communication operations. The co-existence manager evaluates potential interference between RF chains using predicted models of transmitter feedback and receiver sensitivity, and proactively adjusts channel assignments or power levels to prevent interference before it occurs
Solution Approach 2:
The patent introduces a co-existence manager as an intermediary component that mediates between multiple RF chains. This manager coordinates channel assignments, transmission power, and timing between different RF chains to minimize mutual interference while maintaining concurrent operation capability
2Volume of moving object
If transmitter and receiver are placed close together in the same device, then device compactness is improved, but transmitter feedback interferes with receiver sensitivity
Solution Approach 1:
The system applies different quality measures to different parts of the communication system. The co-existence manager identifies specific local interference scenarios (e.g., uplink transmitter interfering with downlink receiver) and applies targeted mitigation strategies such as channel avoidance or power control for affected RF chains while maintaining optimal performance for non-interfering chains
3Productivity
If multiple transmission operations are executed concurrently, then communication throughput is improved, but intermodulation products and battery current limits are exceeded
Solution Approach 1:
The system implements feedback mechanisms where the co-existence manager continuously monitors the actual interference levels and performance metrics from concurrent transmissions. Based on this feedback, the system dynamically adjusts channel assignments, power levels, or timing to optimize throughput while staying within battery current limits and avoiding harmful intermodulation products
Data Source
AI summary
The various embodiments include methods and apparatuses for avoiding interference scenarios during concurrent communication of dual-technology wireless communication devices. Interference scenarios may be avoided by predicatively determining the potential for interference between the channels of multiple communications on the dual-technology wireless communication devices. For a pending communication, a predicative calculation may be made to determine whether the channel of the pending communication and the channel of an active communication may interfere with each other. If so, the communication with a lower priority may switch to the highest powered channel that does not interfere with the higher priority communication. Once the interference condition expires, and the lower priority communication persists, its channel may switch to a higher power channel that will not cause interference with any active or pending communications. Switching the channel for a communication may be prompted by electromagnetic interference from components of the dual-technology wireless communication devices.