QCL Reference Signal Timing for Accurate Demodulation
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Solution Overview
Problem
In dense and large-scale distributed wireless networks, the spatial distribution of access points is more dispersed, leading to changes in serving AP sets and interference situations, which complicates the demodulation of reference signals, and existing methods fail to accurately indicate the time range of quasi-co-location (QCL) relationships between reference signals.
Innovation Solution
A method and device for determining QCL relationships by acquiring and configuring indication information that includes QCL association, first and second time window information, and QCL types to establish the QCL relationship between reference signals, using modules to process and send this information to determine the correct demodulation of reference signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing QCL indication methods are used in dense distributed networks, then the method is simple, but the time range of QCL relationships cannot be accurately indicated
Solution Approach 1:
The indication information is segmented into multiple independent fields: QCL association information, first time window information, and second time window information. Each field serves a specific function - QCL association information identifies the reference signal relationship, while the two time window fields independently define the temporal validity ranges, enabling precise QCL relationship indication through structured division of information elements.
2Reliability
If time window information is added to QCL indication, then the time range accuracy is improved, but the indication information becomes more complex
Solution Approach 1:
The time window information is configured in advance as part of the indication information structure, defining the temporal validity range of QCL relationships before demodulation occurs. This preliminary configuration enables the terminal to pre-establish the correct demodulation parameters within the specified time windows, improving reliability without requiring complex real-time processing.
Data Source
AI summary
A method for determining a quasi-co-location (QCL) relationship, applied to a first node, including: acquiring indication information; determining the QCL relationship between a first reference signal and a second reference signal according to the indication information; where the indication information includes QCL association information, first time window information and second time window information; the QCL association information includes the first reference signal having the QCL relationship with the second reference signal, and a QCL type.