Communication Apparatus Frequency Band Switching for Wireless Interference
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Solution Overview
Problem
The use of metal cables in home LAN configurations often interferes with wireless communication devices due to overlapping frequency bands, causing signal leakage and deteriorating communication quality, as existing technologies cannot effectively distinguish and avoid the frequency bands used by wireless communication devices.
Innovation Solution
A communication apparatus with a reception unit, transmission unit, interference signal detection unit, and signal transmission control unit that detects wireless communication signals on metal cables and adjusts transmission frequencies to avoid overlapping bands, preventing interference with wireless communication devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal cables are used for home LAN configuration, then wired communication can be achieved, but signal leakage occurs and wireless communication quality deteriorates
Solution Approach 1:
The communication apparatus dynamically changes the frequency band parameter used for transmission. When wireless communication signals are detected on the metal cable, the system switches from using a first frequency band to a second frequency band, thereby avoiding interference with wireless communication devices while maintaining wired communication reliability
Solution Approach 2:
The system continuously monitors the metal cable for presence of wireless communication signals and adjusts transmission parameters based on this feedback. The signal detection unit detects wireless communication signals, and this detection feedback triggers the frequency band switching mechanism to prevent interference
2Productivity
If frequency bands are shared between wired and wireless communication, then spectrum utilization is improved, but communication quality deteriorates due to overlapping frequency bands
Solution Approach 1:
The system dynamically adjusts frequency band allocation based on real-time detection of wireless communication signals. Instead of fixed frequency assignment, the wired communication system switches between frequency bands dynamically, allowing spectrum sharing when wireless devices are absent while ensuring communication quality when they are present
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The apparatus effectively prevents the deterioration of wireless communication quality by avoiding the frequency bands used by wireless communication devices, ensuring stable communication even when metal cables and wireless devices coexist, by dynamically switching to non-overlapping frequency bands.
Implementation Method 1
a transmission unit that sends a transmission signal obtained by modulating transmission data with a frequency included in a first frequency band to the metal cable
Implementation Method 2
an interference signal detection unit that detects a signal used in wireless communication, modulated by a frequency included in a second frequency band, and transmitted over the metal cable as an interference signal
Data Source
AI summary
A communication apparatus comprises a reception unit that receives a reception signal from a metal cable and extracts reception data; a transmission unit that sends a transmission signal obtained by modulating transmission data with a frequency included in a first frequency band to the metal cable; an interference signal detection unit that detects a signal used in wireless communication, modulated by a frequency included in a second frequency band, and transmitted over the metal cable as an interference signal; and a signal transmission control unit that instructs the transmission unit to modulate transmission data using a frequency included in a third frequency band that does not have any frequency band overlapping the second frequency band when the interference signal is detected and a frequency band overlapping both the first frequency band and the second frequency band exists.