Base Station Interference Cell Signaling for Targeted UE Rejection
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Solution Overview
Problem
Existing wireless communication systems face challenges in effectively removing interference signals due to the difficulty in accurately locating and managing interference sources, leading to degraded data reception performance in user equipment.
Innovation Solution
A base station device provides resource allocation information of interference cells to user equipment, allowing for precise identification and targeted interference removal by informing the user equipment of the interference's occurrence region in the time-frequency domain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If batch process is applied to the whole band of reception signal to remove interference, then interference removal is attempted, but data reception performance decreases because of signal distortion
Solution Approach 1:
The patent segments the interference removal process by dividing the reception signal into different resource regions based on resource allocation information. Instead of applying batch processing to the entire signal band, the system identifies and processes only the specific resource regions where interference occurs, thereby avoiding signal distortion in non-interference regions and maintaining data reception performance.
Solution Approach 2:
The patent applies local quality by providing resource allocation information that enables the user equipment to apply interference removal only in specific local regions where interference is present. This targeted approach allows the system to maintain high signal quality in regions without interference while removing interference in affected regions, thus preserving overall data reception performance.
2Measurement precision
If resource allocation information of interference cell is provided to user equipment, then interference removal accuracy is improved, but device complexity increases
Solution Approach 1:
The patent uses resource allocation information as an intermediary that conveys interference location data from the base station to the user equipment. This intermediary mechanism enables precise interference identification without requiring complex processing at the user equipment side, as the base station performs the analysis and provides structured information that simplifies the UE's interference removal task.
Solution Approach 2:
The base station performs preliminary analysis by obtaining resource allocation information from external base stations and identifying interference regions before transmitting data to the user equipment. This preliminary action allows the interference characteristics to be pre-characterized and communicated to the UE, reducing the computational burden during actual data reception and processing.
Data Source
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AI summary
A base station device includes a communication circuit configured to receive a first signal from an external base station device and transmit a second signal to a user equipment, by using a plurality of antennas, and a processor configured to obtain resource allocation information of the external base station device based on the first signal, identify whether an interference cell occurs, and generate the second signal when the interference cell occurs, the second information including resource allocation information of the interference cell.