Base Station Interference Detection via Reference Signal Cross-Correlation
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Solution Overview
Problem
Existing wireless communication systems face challenges in effectively detecting interference between base stations, leading to deterioration in communication quality and increased probability of misidentifying signals.
Innovation Solution
The proposed solution involves a method and device for base stations to receive signals through allocated resources for reference signals, detect these signals using cross-correlation values between candidate reference signals, and determine the presence of interference signals accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If base stations use traditional interference detection methods, then interference can be detected, but the probability of misidentifying signals increases and detection performance deteriorates
Solution Approach 1:
The base station performs preliminary actions by allocating specific resources for reference signals before interference occurs, and by pre-configuring multiple candidate reference signals with known sequences. This preparation enables more accurate interference detection when it actually occurs, reducing misidentification probability.
Solution Approach 2:
The base station measures interference signals by comparing received signals against multiple candidate reference signals and uses feedback from this comparison process to determine the actual interference source. The system continuously refines its detection accuracy by learning from previous measurements and adjusting its identification criteria.
2Measurement precision
If base stations allocate resources for reference signals to improve detection accuracy, then measurement precision improves, but system complexity increases
Solution Approach 1:
The base station segments the interference detection process into distinct phases: allocating specific resources for reference signals, measuring interference on these allocated resources, and processing measurements separately. This segmentation makes the complex detection process more manageable and implementable.
Solution Approach 2:
The allocated resources for reference signals serve multiple functions: they are used for normal reference signal operations and simultaneously for interference measurement. This multi-functionality reduces the need for separate dedicated interference detection resources, thereby limiting the increase in system complexity.
Data Source
AI summary
Disclosed is a 5th generation (5G) or pre-5G communication system for supporting a data transmission rate higher than that of a 4th generation (4G) communication system, such as long term evolution (LTE). The purpose of the disclosure is to detect interference between base stations in a wireless communication system, and a base station operating method can comprise the steps of: receiving signals through a resource allocated for reference signals (RSs) for interference measurement; detecting at least one RS on the basis of the signals; and determining that at least one among the RSs has been received on the basis of cross-correlation values between candidate RSs.