Base Station Interference Mitigation for Cross-Band Resource Use
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Solution Overview
Problem
Existing interference avoidance algorithms in mobile communication systems, such as those for inter-modulation distortion (IMD) and harmonic interference (HI), often limit the use of resources in the time and frequency axes, leading to inefficient utilization of available resources.
Innovation Solution
An apparatus and method for determining the degree of interference influence based on uplink and downlink information, allowing adaptive application of interference avoidance algorithms only when necessary, using a processor to control base stations to apply algorithms based on electric field states and predetermined conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If interference avoidance algorithms are applied to user terminals, then communication quality is improved, but resource utilization deteriorates due to limited time and frequency resources
Solution Approach 1:
The system dynamically adjusts the application of interference avoidance algorithms based on real-time electric field state measurements. The base station determines whether to apply IMD or HI avoidance algorithms adaptively, switching between different interference mitigation strategies according to current conditions, thereby optimizing both communication quality and resource utilization without permanent resource constraints
Solution Approach 2:
The system changes the parameter of algorithm application from static (always applied or never applied) to dynamic (applied only when electric field state indicates interference risk). By monitoring electric field strength parameters and adjusting algorithm application accordingly, the system maintains communication quality while preventing unnecessary resource limitations
2Reliability
If interference avoidance algorithms are applied to all terminals, then communication quality is improved, but device complexity increases
Solution Approach 1:
The base station acts as an intermediary that performs the complex determination of whether to apply interference avoidance algorithms. Instead of requiring complex decision-making logic in each user terminal, the base station receives electric field state information, determines interference risk, and controls algorithm application centrally, thereby improving communication quality without increasing terminal device complexity
Solution Approach 2:
The complex interference determination logic is extracted from the user terminal and relocated to the base station. The terminal only needs to provide basic electric field state information, while the base station performs the sophisticated analysis and control, reducing terminal complexity while maintaining system-wide communication quality
Data Source
AI summary
An example base station in a wireless communication system includes a communication module for communicating with a user terminal and a cooperative base station, the base station communicating with the user terminal in a first frequency band, and the cooperative base station communicating with the user terminal in a second frequency band, a memory for storing computer-executable instructions, and a processor configured to execute the computer-executable instructions by accessing the memory, wherein when the instructions are executed by the processor, the processor is configured to control the base station to receive uplink information and downlink information in the first frequency band and the second frequency band for the user terminal from the user terminal and the cooperative base station, determine whether the user terminal is a terminal in which interference may occur, based on a combination of the first frequency band and the second frequency band, and if the user terminal is a terminal in which interference may occur, determine whether to apply an interference avoidance algorithm to the user terminal based on the uplink information and the downlink information.