Radio Communication Interference Mitigation via Dynamic Controller
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Radio communication systems with adjacent base stations using the same frequency face interference issues due to changes in propagation environments and frequency shortages, which existing methods like antenna tilt adjustments and frequency scheduling cannot effectively address.
Innovation Solution
A radio communication system that includes a controller device to identify and mitigate interference by transmitting power and location information from a first radio base station to a controller, which then sends control information to a second radio base station to adjust transmission power or beam direction, or stop using interfering frequencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frequency scheduling is used to allocate frequencies less affected by interference, then interference avoidance is improved, but the system cannot adapt when propagation environment changes after base station installation
Solution Approach 1:
The patent implements dynamic interference mitigation by continuously monitoring interference levels and adjusting transmission parameters in real-time. The base station dynamically changes transmission power, frequency allocation, or beam direction based on current propagation conditions rather than relying on static frequency scheduling decisions made during installation.
Solution Approach 2:
The system employs feedback mechanisms where the base station receives information about actual interference conditions and uses this feedback to adjust its transmission strategy. This closed-loop control enables the system to adapt to changing propagation environments by continuously optimizing transmission parameters based on measured interference levels.
2Productivity
If the radio base station communicates with a large number of radio terminals, then service coverage is improved, but allocatable frequencies run short and interference cannot be avoided
Solution Approach 1:
The patent segments the transmission resources by dividing the communication spectrum into multiple frequency resources and using spatial segmentation through beamforming. This allows the base station to serve multiple terminals simultaneously on different frequency segments and spatial directions, effectively increasing capacity while maintaining interference avoidance through resource isolation.
Solution Approach 2:
The patent introduces spatial dimensionality through beamforming technology, transforming the problem from a two-dimensional frequency allocation issue to a three-dimensional resource allocation problem that includes spatial direction. This enables the base station to transmit to multiple terminals simultaneously by directing beams in different spatial directions, effectively multiplying the available communication channels.
Data Source
AI summary
A controller device receives power information and location information from a first radio base station, the power information indicating, for each frequency, the power of the signal arriving at a radio terminal in the communication area of the first radio base station from a second radio base station, and the location information indicating the location of the radio terminal. The controller device is provided with an identifying unit which, based on the power information and location information received from the first radio base station, identifies an interference location and identifies an interference frequency, the interference location being the location where the power of the signal arriving at the communication area is greater than or equal to a predetermined value, and the interference frequency being the frequency of the signal arriving at the interference location.