Frequency Pattern Switching for Wireless Interference Reduction
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Solution Overview
Problem
In wireless communication systems using overlapped frequency bands, interference among multiple systems can increase even with frequency hopping, necessitating a new method to reduce interference effectively.
Innovation Solution
An electronic apparatus with a transmitter and processor that switches between frequency patterns to minimize interference by randomly determining parameters for frequency hopping, allowing the system to adapt and reconfigure channel allocations based on communication situations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If frequency hopping is used to reduce interference among wireless communication systems, then interference reduction is achieved, but when a large number of systems operate simultaneously, interference increases again
Solution Approach 1:
The patent implements dynamic frequency pattern switching where the master electronically apparatus transitions from a first frequency hopping pattern to a second frequency pattern based on detected communication situations. This dynamic adaptation allows the system to respond to changing interference conditions, resolving the contradiction between initial interference reduction and subsequent interference increase in dense networks.
Solution Approach 2:
The patent changes the fundamental parameter of frequency allocation by switching between different frequency hopping patterns. The master apparatus monitors communication situations and switches patterns to optimize performance, thereby adapting to varying network densities and interference levels without requiring system redesign.
2Quantity of substance
If a large number of wireless communication systems operate in overlapped frequency bands, then network capacity increases, but interference among systems increases
Solution Approach 1:
The patent segments the frequency spectrum usage by implementing multiple distinct frequency hopping patterns. Different masters operate on different patterns (first pattern vs. second pattern), effectively dividing the shared frequency band into temporal and spectral segments. This segmentation allows more systems to coexist by reducing simultaneous collisions on the same frequency at the same time.
Solution Approach 2:
The system dynamically switches between frequency patterns based on detected communication situations, allowing the network to adapt its structure to accommodate varying numbers of active systems. When network density increases, the dynamic pattern switching enables better spatial and spectral distribution of transmissions, reducing interference despite the increased quantity of systems.
3Device complexity
If fixed frequency hopping patterns are used, then system simplicity is maintained, but interference reduction effectiveness decreases in varying communication situations
Solution Approach 1:
The patent implements periodic frequency pattern switching where the master alternates between a first frequency hopping pattern and a second frequency pattern based on communication situations. This periodic action provides structured complexity that is easier to manage than completely adaptive schemes, while still achieving significant interference reduction through systematic pattern variation.
Data Source
AI summary
According to one embodiment, an electronic apparatus includes a transmitter and a processor. The transmitter transmits a signal to a first electronic apparatus with one of patterns including at least a first pattern which is a first order and which uses first to n-th frequency bands in first to n-th periods and a second pattern which is a second order different from the first order and which uses the first to n-th frequency bands in the first to n-th periods, where n is an integer greater than or equal to two. The processor switches a pattern to be used among the patterns in accordance with a communication situation.