Wireless Router Dynamic Channel Adjustment for LTE Interference
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Solution Overview
Problem
Interference between 3G/LTE network signals and Wi-Fi signals, particularly in the 2.4G band, causes service interruptions and reduces the functionality of Wi-Fi channels 8 to 13 due to overlap with LTE Band7 and WiMAX 2.3G/2.5G bands.
Innovation Solution
A wireless router method and device that dynamically adjusts the Wi-Fi channel to avoid interference by changing the working channel of the Wi-Fi network if interference is detected, either by switching to non-interfering channels when no users are connected or by monitoring data traffic to determine if channel adjustment is necessary when users are active, ensuring no interference exists between the Wi-Fi channel and the 3G/LTE access band.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the wireless router uses a fixed Wi-Fi channel in the 2.4G band, then the configuration is simple and stable, but interference occurs with 3G/LTE network signals in overlapping frequency bands
Solution Approach 1:
The patent implements dynamic channel adjustment where the Wi-Fi channel is no longer fixed but can be automatically changed based on detected interference conditions. The system monitors for interference between Wi-Fi signals and 3G/LTE network signals, and when interference is detected, it automatically switches to a non-interfering channel, making the channel selection dynamic rather than static.
Solution Approach 2:
The system employs feedback mechanisms by continuously monitoring the wireless environment for interference conditions. When interference between Wi-Fi and 3G/LTE signals is detected, the system receives feedback about the interference state and automatically adjusts the Wi-Fi channel in response, creating a closed-loop control system that adapts to changing conditions.
2Object-affected harmful factors
If the wireless router dynamically adjusts the Wi-Fi channel to avoid interference, then signal interference is reduced, but system complexity increases due to channel detection and switching mechanisms
Solution Approach 1:
The wireless router performs self-service by automatically detecting interference conditions and adjusting its own Wi-Fi channel without external intervention. The system monitors its own operating environment, identifies interference with 3G/LTE signals, and autonomously switches channels to resolve the interference, eliminating the need for manual configuration or external control systems.
Solution Approach 2:
The system changes the operating parameter (Wi-Fi channel) in response to detected interference conditions. When interference is detected, the channel parameter is modified to a different value that does not overlap with 3G/LTE frequency bands, thereby resolving the interference while maintaining simple operational logic.
3Object-affected harmful factors
If the wireless router switches Wi-Fi channels frequently to avoid interference, then interference avoidance is improved, but service stability deteriorates due to connection disruptions
Solution Approach 1:
The system takes preliminary anti-action by proactively switching to a non-interfering channel before interference significantly degrades service quality. By detecting interference conditions early and switching channels preemptively, the system prevents severe service disruptions while maintaining connection stability, rather than waiting for interference to cause problems.
Solution Approach 2:
The wireless router performs preliminary actions by monitoring for interference conditions and preparing to switch channels before actual service disruption occurs. The system detects potential interference with 3G/LTE signals and switches channels in advance, ensuring continuous stable service without waiting for degradation to happen.
Data Source
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AI summary
Embodiments of the present invention provide a communication interference processing method and a wireless router. The method includes: obtaining an access band of a wireless wide area network and a working channel of a WiFi wireless local area network; and if interference exists between the access band of the wireless wide area network and the working channel of the WiFi wireless local area network, and no WiFi user is currently accessing the WiFi wireless local area network, changing the working channel of the WiFi wireless local area network so that no interference exists between the working channel of the WiFi wireless local area network after the change and the access band of the wireless wide area network. In the embodiments of the present invention, the wireless router may automatically adjust the working channel of the WiFi wireless local area network when interference exists between the access band of the wireless wide area network and the working channel of the WiFi wireless local area network, thereby effectively avoiding the problem of interference between a network signal of the wireless wide area network and a WiFi signal.