Wireless Interference Detection via Short and Long Term Analysis
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Solution Overview
Problem
In wireless communication systems, especially in shared bandwidth channels like 2 GHz/5 GHz/6 GHz WiFi, interference detection is challenging, leading to transmission errors due to collisions among different communication systems, which existing methods like CSMA and CA cannot completely prevent.
Innovation Solution
A wireless communication device equipped with a wireless transceiver circuit, baseband signal processing circuit, and an interference detection device that performs short-term and long-term interference detection across packets to identify interference and adjust transmission parameters, specifically indicating the frequency band affected, allowing for adaptive adjustments to reduce errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple communication systems share limited bandwidth in free channels, then channel utilization is improved, but interference and collision between systems increase
Solution Approach 1:
The patent performs preliminary interference detection before transmission by analyzing channel characteristics and predicting potential interference conditions. This allows the system to proactively adjust transmission parameters or select alternative channels before collisions occur, enabling multiple systems to share bandwidth more effectively while preventing interference.
2Reliability
If existing interference prevention methods like CSMA and CA are used, then some collision avoidance is achieved, but transmission errors cannot be completely prevented
Solution Approach 1:
The patent implements a feedback mechanism that continuously monitors transmission outcomes and channel conditions. When interference or transmission errors are detected, the system adjusts transmission parameters such as power levels, modulation schemes, or channel selections based on this feedback, thereby improving reliability without requiring overly complex prevention mechanisms.
3Measurement precision
If interference detection is performed to reduce transmission errors, then transmission correctness is improved, but detection accuracy and timeliness become critical challenges
Solution Approach 1:
The patent segments interference detection into multiple stages: initial channel assessment before transmission, mid-transmission monitoring, and post-transmission evaluation. Each stage uses detection methods optimized for its specific requirements, improving overall detection accuracy and timeliness while managing the complexity of detecting various interference types.
Data Source
AI summary
A wireless communication device includes a wireless transceiver circuit, a baseband signal processing circuit, and an interference detection device. The wireless transceiver circuit receives a wireless signal from a wireless transmission channel, and converts the wireless signal into a baseband signal. The baseband signal processing circuit processes the baseband signal including a plurality of packets. The interference detection device is coupled to the baseband signal processing circuit, and performs a short-term interference detection and a long-term interference detection according to the plurality of packets, to determine whether interference exists in the wireless transmission channel and generate a detection result, wherein the short-term interference detection is an interference detection within a single packet, and the long-term interference detection is an interference detection across packets. When the detection result indicates interference exists in the wireless transmission channel, the detection result further indicates a frequency band in which the interference exists.