RF Channel Interference Minimization via Frame Synchronization
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Solution Overview
Problem
In local area wireless communication systems, signal interference between broadcasting and communication signals on adjacent RF channels deteriorates the transmitting/receiving performance and reduces communication service coverage, particularly in WPAN/WLAN technologies, where existing filtering standards are inadequate.
Innovation Solution
A system and method that multiplex broadcasting signals across multiple RF channels, synchronize broadcasting frames on a time axis, and allocate communication frames to minimize interference between RF channels, allowing for efficient broadcasting and communication convergence without enhancing filtering characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If broadcasting signals are transmitted on multiple adjacent RF channels, then broadcasting coverage is improved, but signal interference between channels increases
Solution Approach 1:
The system segments the transmission medium by dividing broadcasting and communication signals into separate time slots (broadcasting frames and communication frames) within each RF channel. This temporal segmentation prevents simultaneous transmission of broadcasting and communication signals on the same channel, thereby reducing interference while maintaining multi-channel broadcasting coverage.
Solution Approach 2:
The system implements periodic alternation between broadcasting frames and communication frames on each RF channel. By periodically switching between broadcasting and communication transmission in a structured manner, the system ensures that broadcasting signals occupy multiple channels for extended coverage while communication signals receive dedicated time slots, minimizing mutual interference through rhythmic temporal separation.
2Reliability
If filtering characteristics are enhanced to remove interference signals, then communication signal quality is improved, but device complexity and cost increase
Solution Approach 1:
The system performs preliminary action by pre-allocating specific time slots (communication frames) for communication signals and broadcasting frames for broadcasting signals before actual transmission occurs. This advance planning and structured frame allocation ensures that communication signals are transmitted during interference-free time periods, maintaining signal quality without requiring complex filtering hardware.
Solution Approach 2:
The system extracts communication signals from the mixed broadcasting-communication transmission medium by allocating dedicated communication frames within each RF channel. This extraction approach separates communication signals from broadcasting interference in the time domain, achieving clean communication reception without relying on complex frequency filtering capabilities.
3Object-generated harmful factors
If communication frames are allocated after broadcasting frames on each RF channel, then communication signal interference is reduced, but transmission time efficiency decreases
Solution Approach 1:
The system merges the frame structures across multiple RF channels by synchronizing communication frames to occur simultaneously on all channels at the same time positions. This merging approach allows the system to maintain structured temporal separation (reducing interference) while achieving efficient utilization of all available channels, as communication can proceed in parallel across multiple synchronized channels rather than sequentially.
Data Source
AI summary
Disclosed is a system and a method for minimizing signal interference for a broadcasting and communication convergence section within a local area, and an apparatus applied to the same. The system has a construction of mounting a plurality of multi RF (Radio Frequency) channels within a local area wireless communication apparatus located in a local area and minimizing signal interference between mutually adjacent RF channels within the local area wireless communication apparatus in a standard for providing a broadcasting and communication convergence service. Accordingly, it is possible to remove the mutual channel effects affecting a communication signal without signal interference for adjacent channels due to a broadcasting signal and it is not necessary to enhance a filtering characteristic for the adjacent channels of a chipset, which corresponds to a broadcasting and communication convergence standard structure in a local area, so that there is an advantage of reducing network investment costs.