Channel Bandwidth Switching with Interference Detection
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Solution Overview
Problem
Current microwave transmission systems face link interruptions and bit errors due to interfering signals when switching bandwidth, which affects link availability and service transmission.
Innovation Solution
A channel bandwidth switching method that acquires a mean square error (MSE) to identify channel quality, determines the presence of interfering signals outside the operating bandwidth, and decides whether to switch the bandwidth based on error-free thresholds, using band-pass and band-stop filters or signal processing techniques to isolate and assess the interfering signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If bandwidth is switched from 250M to 500M to improve transmission capacity, then channel bandwidth increases, but interfering signals in the extended frequency range cause link interruption
Solution Approach 1:
The patent performs preliminary detection of interfering signals in the target bandwidth range before executing the bandwidth switching operation. By using a spectrum analyzer to detect interfering signals in advance, the system determines whether the target bandwidth is suitable for switching, thereby preventing link interruption caused by interfering signals.
Solution Approach 2:
The patent implements a feedback mechanism where the detection result of interfering signals is used to control the bandwidth switching decision. The spectrum analyzer continuously monitors the frequency spectrum, and when interfering signals are detected above a threshold, the system feedbacks this information to prevent bandwidth switching to that range, thus maintaining link reliability.
2Speed
If bandwidth switching is performed without detecting interfering signals, then switching speed is fast, but link interruption occurs due to interfering signals
Solution Approach 1:
The patent performs preliminary detection of interfering signals in the target bandwidth range before executing the bandwidth switching operation. By using a spectrum analyzer to detect interfering signals in advance, the system determines whether the target bandwidth is suitable for switching, thereby preventing link interruption caused by interfering signals.
Solution Approach 2:
When no interfering signals are detected in the target bandwidth range, the patent allows rapid bandwidth switching to proceed without delay. The system skips the interference detection step for already-validated bandwidth ranges, maintaining fast switching speed while ensuring reliability through selective detection.
Data Source
AI summary
Embodiments of the present invention provide a channel bandwidth switching method and network equipment. In the method, an MSE is acquired; a target bandwidth of a first space link is acquired according to the MSE and a correspondence between the target bandwidth of the space link and the MSE; in a case in which the signal has an interfering signal outside the operating bandwidth, the interfering signal is acquired; it is determined, according to the interfering signal and an error-free threshold, whether the operating bandwidth can be switched to the target bandwidth of the first space link; and if it is determined that the operating bandwidth can be switched to the target bandwidth of the first space link, information that carries the target bandwidth of the first space link is sent to the second network element, thereby avoiding a problem such as interruption of signal transmission.