Reference Signal Timing Offset for Accurate CLI Measurement
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Solution Overview
Problem
In dynamic time division duplex (DTDD) scenarios, the inconsistency in transmission directions between cells leads to interference, and existing methods for cross-link interference (CLI) measurement suffer from low accuracy due to time errors in receiving reference signals, making it difficult for victim terminals to determine the exact time of signal arrival.
Innovation Solution
The method involves determining a receiving time for reference signals with an offset from the downlink slot boundary, using timing advance offset and timing advance values to improve accuracy and reduce complexity in interference measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the victim terminal uses legacy CLI measurement methods, then the measurement process is simple, but the measurement accuracy is low due to time errors in receiving reference signals
Solution Approach 1:
The network device performs preliminary actions by determining the receiving time of the reference signal and notifying the terminal of this time information before the actual measurement occurs. This allows the terminal to accurately align its measurement window with the expected reference signal arrival time, resolving the time error issue without requiring complex terminal-side timing calculations
Solution Approach 2:
The network device acts as an intermediary that bridges the timing mismatch between the aggressor terminal's reference signal transmission and the victim terminal's reception. By calculating the receiving time based on uplink timing advance information and notifying the victim terminal, the network device eliminates the time error that would otherwise degrade measurement accuracy
2Measurement precision
If the terminal determines receiving time using timing advance values, then the receiving time accuracy is improved, but the calculation complexity increases
Solution Approach 1:
The network device serves as an intermediary that performs the complex timing calculations using uplink timing advance values and determines the precise receiving time. Instead of requiring the terminal to perform these calculations, the network device computes the receiving time and communicates it to the terminal, thereby achieving high receiving time accuracy while keeping terminal processing simple
Solution Approach 2:
The network device utilizes existing uplink timing advance information that is already available in the system to automatically determine the receiving time of the reference signal. This self-service approach leverages existing parameters to derive the required timing information without requiring additional complex terminal-side processing
Data Source
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AI summary
The present disclosure relates to an interference measurement method, a communication device, and a storage medium. The method comprises: determining a receiving time of a reference signal, wherein there is an offset between the receiving time and a downlink (DL) slot boundary; and receiving the reference signal on the basis of the receiving time, and executing interference measurement. According the present disclosure, the receiving time, having the offset from the DL slot boundary, of the reference signal is determined to execute the interference measurement, thereby improving the accuracy of the interference measurement and reducing the complexity of the interference measurement.