User Terminal Beam Reporting Using SINR Measurements
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Solution Overview
Problem
Current radio communication systems, such as LTE and 5G NR, face challenges in beam management, particularly in performing appropriate beam selection and reporting, which can lead to reduced communication throughput due to reliance on L1-RSRP alone, neglecting interference measurements.
Innovation Solution
A user terminal is equipped with a control section to measure Signal to Interference plus Noise Ratios (SINRs) using multiple signal and interference measurement resources, and a transmitting section to report these SINRs and associated indices, enabling more accurate beam reporting and selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If beam selection is performed based only on L1-RSRP, then the beam selection process is simple, but the communication throughput is reduced due to ignoring interference levels
Solution Approach 1:
The beam reporting process is segmented into multiple independent SINR measurements, each associated with specific signal measurement resources and interference measurement resources. This allows the system to evaluate multiple beams with their respective interference characteristics separately, enabling more informed beam selection that improves throughput while maintaining manageable complexity through structured reporting.
Solution Approach 2:
The invention changes the reporting parameter from simple L1-RSRP to L1-SINR, which incorporates both signal strength and interference level information. This parameter change enables the base station to select beams that not only have strong signal strength but also acceptable interference levels, thereby improving communication throughput while the structured reporting mechanism keeps the complexity increase manageable.
2Measurement precision
If multiple SINR measurements are performed with multiple interference measurement resources, then beam reporting accuracy is improved, but the reporting overhead increases
Solution Approach 1:
The invention merges the reporting of multiple SINR measurements and their associated resource indices into a unified beam reporting structure. By combining signal measurement resources, interference measurement resources, and SINR values into coordinated reporting units, the system achieves comprehensive beam assessment while optimizing the reporting overhead through efficient resource indexing and consolidated transmission.
3Measurement precision
If interference measurement resources are added to the measurement process, then beam selection accuracy is improved, but the measurement process complexity increases
Solution Approach 1:
The system performs preliminary configuration of signal measurement resources and interference measurement resources before the actual beam measurement process. By pre-defining the resource associations and measurement parameters, the invention simplifies the real-time measurement process while maintaining high accuracy, as the measurement devices already have the necessary resource mappings prepared in advance.
Data Source
AI summary
A user terminal includes a control section that measures a plurality of Signal to Interference plus Noise Ratios (SINRs), based on one or more signal measurement resources and a plurality of interference measurement resources, and a transmitting section that reports one or more SINRs among the plurality of the SINRs and one or more indices associated with the resources used for the one or more SINRs. According to one aspect of the present disclosure, appropriate beam reporting can be performed.