Repeater Channel Selection via Interference Calculation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In local communication systems, particularly WiFi networks, Access Points (APs) face challenges in selecting optimal channels due to increased usage, leading to difficulties in finding unused channels and resulting in inter-channel interference, which affects communication efficiency.
Innovation Solution
A repeater system that calculates the Channel Usage Index (CUI) to determine the degree of interference between available and adjacent channels, selecting the channel with the smallest interference to minimize inter-channel interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If an AP selects a channel that is not used by other devices, then communication efficiency is improved, but finding such a channel becomes difficult as WLAN usage increases
Solution Approach 1:
The repeater performs preliminary channel assessment by calculating the Channel Usage Index (CUI) for each available channel before final channel selection. This preliminary action involves measuring signal strength on adjacent channels and computing interference degrees in advance, allowing the system to identify the optimal channel proactively rather than reactively, thus improving communication efficiency while managing selection complexity.
2Adaptability or versatility
If an AP uses a channel that is adjacent to channels used by other APs, then channel availability is improved, but inter-channel interference increases
Solution Approach 1:
The repeater implements a feedback mechanism by continuously monitoring signal strength on adjacent channels and using this information to calculate the Channel Usage Index (CUI). The system measures the actual interference conditions, computes the CUI based on these measurements, and uses this feedback to select the channel with the minimum CUI value, thereby adapting to the current wireless environment and minimizing inter-channel interference while maintaining channel availability.
3Object-affected harmful factors
If an AP frequently changes channels to avoid interference, then interference avoidance is improved, but system stability deteriorates
Solution Approach 1:
The repeater performs preliminary assessment of all available channels by calculating their Channel Usage Index (CUI) values before making a channel selection decision. This preliminary action allows the system to identify the optimal channel in advance and switch to it only when necessary, rather than frequently changing channels. The system maintains stability by selecting a channel with minimum CUI and using it consistently, thereby avoiding interference without causing instability from frequent changes.
Data Source
AI summary
A repeater for selecting a channel in a local communication system, and a method thereof are provided. A repeater of a local communication system includes a transceiver configured to perform at least one of transmitting and receiving a signal, and a controller configured to calculate a degree of interference of an available channel with an adjacent channel, the interference caused when a frequency band of the available channel overlaps partially with a frequency band of the adjacent channel, and to determine that the repeater is to use a channel having a smallest degree of interference as a channel.