Adaptive Wireless Communication Device Threshold Control
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Solution Overview
Problem
Wireless communication devices face performance degradation due to frequent suspension of transmission in noisy environments or due to interference from internal or peripheral signals, leading to packet collisions and inefficient network throughput.
Innovation Solution
A wireless communication device and method that adaptively measures signal energy, generates comparison results using thresholds, and adjusts transmission control signals to permit or prohibit packet transmission, with the ability to execute gain control to reduce interference and loosen thresholds when necessary, ensuring efficient transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the wireless device uses a predetermined threshold (CCA threshold) to determine channel occupancy, then packet collision can be avoided, but transmission performance degrades in noisy environments where noise is frequently misinterpreted as valid signals
Solution Approach 1:
The patent applies dynamics by making the threshold adaptive rather than fixed. The threshold dynamically adjusts based on the device's transmission history and environmental conditions. When the device experiences frequent suspensions or transmission failures, it automatically lowers the threshold to allow more transmissions. This dynamic adjustment resolves the contradiction by enabling the system to maintain collision avoidance in quiet environments while being more permissive in noisy environments, thus improving overall transmission performance without sacrificing reliability.
Solution Approach 2:
The patent implements feedback mechanisms where the device monitors its own transmission outcomes and uses this information to adjust the threshold. The control circuit receives feedback about transmission success/failure and suspension frequency, then modifies the threshold accordingly. This feedback loop allows the system to learn from its performance and adapt the threshold to match actual channel conditions, resolving the contradiction between maintaining strict collision avoidance and allowing sufficient transmission opportunities in noisy environments.
2Reliability
If the wireless device suspends transmission when signal strength exceeds the threshold, then packet collision is prevented, but network throughput is wasted when the suspended device's signals are too weak to cause substantial interference
Solution Approach 1:
The patent applies parameter changes by modifying the threshold value based on the device's operational state and transmission history. Instead of using a fixed high threshold that causes unnecessary suspensions, the system adjusts the threshold parameter dynamically. When the device has a history of frequent suspensions or low-interference transmissions, the threshold is lowered, allowing weaker signals to be ignored. This parameter adjustment resolves the contradiction by enabling the system to distinguish between truly harmful signals and weak/irrelevant signals, preventing throughput waste while maintaining collision avoidance.
3Productivity
If the wireless device uses a fixed high threshold for signal strength comparison, then false suspensions are reduced, but valid packet collisions may be missed in high-interference environments
Solution Approach 1:
The patent applies dynamics by making the threshold adaptive rather than fixed. The threshold dynamically adjusts based on the device's transmission history and environmental conditions. When the device experiences frequent suspensions or transmission failures, it automatically lowers the threshold to allow more transmissions. This dynamic adjustment resolves the contradiction by enabling the system to maintain collision avoidance in quiet environments while being more permissive in noisy environments, thus improving overall transmission performance without sacrificing reliability.
Solution Approach 2:
The patent implements feedback mechanisms where the device monitors its own transmission outcomes and uses this information to adjust the threshold. The control circuit receives feedback about transmission success/failure and suspension frequency, then modifies the threshold accordingly. This feedback loop allows the system to learn from its performance and adapt the threshold to match actual channel conditions, resolving the contradiction between maintaining strict collision avoidance and allowing sufficient transmission opportunities in noisy environments.
Data Source
AI summary
The present disclosure discloses a wireless communication device and method capable of adaptively permitting packet transmission or adjusting a threshold for packet transmission. An embodiment of said wireless communication device includes a reception circuit, a control circuit and a transmission circuit. The reception circuit measures signal energy, generates multiple energy measurement values, and generates multiple comparison results according to the energy measurement values and at least a threshold. The control circuit is operable to generate a transmission control signal according to the comparison results or to its derived information. The transmission circuit, coupled to the reception circuit and the control circuit, determines whether packet transmission is allowable according to the comparison results if the transmission control signal indicates a normal state, and the transmission circuit determines whether packet transmission is allowable according to the transmission control signal if the transmission control signal indicates an abnormal state.