Adaptive Interference Control for Wireless Networks
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Solution Overview
Problem
Wireless communication networks face challenges in balancing communication sensitivity and transmission availability, particularly in large service areas with many stations, where CSMA protocols lead to frequent media busy conditions and increased susceptibility to external interference.
Innovation Solution
Adaptive interference control (AIC) systems and methods that adjust radio sensitivity by determining media error time metrics and using desensitizing and sensitizing thresholds to optimize communication sensitivity and transmission availability, allowing for dynamic adjustments based on historical data and specific environmental conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If radio sensitivity is increased to extend communication range in large service areas, then coverage area is improved, but transmission availability deteriorates due to increased susceptibility to external interference and frequent media busy conditions
Solution Approach 1:
The patent implements dynamic adjustment of radio sensitivity thresholds based on real-time monitoring of media error rates. The system transitions from static sensitivity settings to adaptive thresholds that automatically adjust according to environmental conditions, allowing the radio to operate at optimal sensitivity levels that balance coverage area and transmission availability
Solution Approach 2:
The system changes the sensitivity parameter dynamically by adjusting the threshold for detecting media errors. When error rates exceed certain thresholds, the system modifies the sensitivity parameter to reduce false detections from external interference, thereby maintaining transmission availability while preserving adequate coverage area
2Quantity of substance
If CSMA protocol is used to manage multiple stations in large service areas, then network capacity is improved, but transmission availability deteriorates due to media being busy a substantial portion of the time
Solution Approach 1:
The patent implements a feedback mechanism that continuously monitors media error rates and transmission success rates. This feedback loop allows the system to detect when external interference is causing false media busy conditions and adjust sensitivity thresholds accordingly, enabling stations to transmit successfully even when CSMA protocol would normally block transmissions
Solution Approach 2:
The system dynamically adjusts the sensitivity parameter based on observed error patterns. When the system detects that high sensitivity is causing excessive false positives from external interference, it reduces the sensitivity parameter, allowing stations to transmit more frequently despite the presence of external signals, thereby improving transmission availability while maintaining support for multiple stations
Data Source
AI summary
Systems and methods which control communications in a carrier sense multiple access environment to provide a balance between communication sensitivity and transmission availability are shown. Adaptive interference control techniques of embodiments operate to determine a media error time metric representing the time associated with receiving interfering signals. The media error time metric of embodiments is used to adjust operation of various network systems in order to adjust communication sensitivity and/or transmission availability. Desensitizing thresholds and sensitizing thresholds may be used to define operating boundaries, such that desensitizing thresholds are used to control network desensitize actions which result in decreased error times and sensitizing thresholds are used to control network sensitizing actions which result in increased error times. Error time metrics and corresponding desensitizing and sensitizing thresholds may be utilized with respect to a plurality of radios. Embodiments provide for adjustment of control parameters based upon historical operation.