Adaptable Mode Navigation Radio for Interference Mitigation
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Solution Overview
Problem
Concurrent operation of radios in electronic devices, such as navigation and communication systems, often results in interference due to differing frequency bands and signal strengths, which can degrade the performance of satellite positioning system (SPS) signal reception.
Innovation Solution
A method and apparatus that allow a satellite positioning system (SPS) receiver to selectively operate in different modes based on operative conditions associated with a wireless system interface, such as frequency-related or timing-related conditions, to avoid interference by switching between different SPS signals or frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the SPS receiver operates in a fixed mode to receive a specific SPS signal, then the signal reception is stable, but interference from wireless system signals degrades performance
Solution Approach 1:
The SPS receiver dynamically switches between different operating modes (first mode for receiving first SPS signal, second mode for receiving second SPS signal) based on the operative conditions of the wireless system interface. This dynamic adaptation allows the receiver to avoid interference by selecting the appropriate SPS signal mode when interference is detected, thereby maintaining reliable positioning functionality despite the presence of harmful wireless signals.
Solution Approach 2:
The receiver changes its operational parameters by switching between different SPS signal reception modes. When the wireless system interface indicates interference conditions, the controller directs the SPS receiver to change from receiving the first SPS signal to receiving the second SPS signal, effectively changing the frequency or signal type parameters to avoid the harmful interference band.
2Object-affected harmful factors
If the SPS receiver operates in multiple modes to avoid interference, then interference resistance improves, but device complexity increases
Solution Approach 1:
The SPS receiver is designed with multi-functionality to receive different types of SPS signals (first SPS signal in first mode, second SPS signal in second mode) through the same receiver hardware. This universal capability allows the single receiver to adapt to different operational conditions and avoid interference without requiring separate dedicated receivers for each signal type, thereby managing complexity while improving interference resistance.
Solution Approach 2:
The controller monitors the operative conditions of the wireless system interface and uses this feedback to determine when to switch the SPS receiver between modes. When interference is detected in the wireless system, the feedback mechanism triggers a mode switch in the SPS receiver to avoid the interfering frequency band, creating a closed-loop system that automatically adapts to changing interference conditions.
Data Source
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AI summary
Methods and Apparatuses are provided for selectively specifying a mode of operation of a navigation radio within a device based, at least in part, on at least one operative condition associated with at least one other radio within the device.