User Terminal Beam Report Overhead Reduction via 1-Bit Sequence
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Solution Overview
Problem
In next-generation mobile communication systems, the overhead of beam reports in user terminals is high due to the need to measure and report numerous signals, leading to increased power consumption and reduced communication throughput.
Innovation Solution
A user terminal that transmits an uplink signal using a sequence indicating whether a beam change is necessary, reducing the overhead of beam reports by using 1-bit information, such as a specific sequence or coding scheme, to inform the base station of beam change requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UE measures and reports a large number of beam measurement results, then the beam management accuracy is improved, but the overhead of the beam report increases
Solution Approach 1:
The beam measurement report is segmented into two parts: a first beam measurement result with full precision and second beam measurement results with reduced precision (e.g., only indicating whether the value is increasing or decreasing). This segmentation allows the system to maintain accurate beam management while reducing the total overhead of the report.
Solution Approach 2:
The precision parameter of beam measurement results is dynamically changed based on the beam's importance or change status. The first beam measurement result maintains high precision, while subsequent results use lower precision representations (such as binary increase/decrease indicators), thereby reducing overall report overhead while preserving critical information.
2Reliability
If the UE transmits detailed beam measurement results, then the beam management performance is improved, but the power consumption of the UE increases
Solution Approach 1:
The beam measurement reporting is segmented such that only the first beam measurement result is transmitted with full detail, while subsequent results are transmitted with reduced detail (e.g., only indicating increase or decrease). This reduces the processing and transmission power required at the UE while maintaining sufficient beam management performance.
Solution Approach 2:
The precision parameter of beam measurement results is adjusted based on the beam's importance or change status. The first beam measurement result maintains high precision, while subsequent results use lower precision representations (such as binary increase/decrease indicators), thereby reducing overall report overhead while preserving critical information.
3Loss of information
If the UE reports all beam measurement results, then the completeness of information is improved, but the communication throughput is reduced
Solution Approach 1:
The beam measurement report is segmented into a first beam measurement result (with full information) and second beam measurement results (with reduced information, such as only indicating increase or decrease). This segmentation reduces the total amount of data transmitted, thereby improving communication throughput while maintaining sufficient information completeness for beam management decisions.
Solution Approach 2:
The precision parameter of beam measurement results is dynamically changed based on the beam's importance or change status. The first beam measurement result maintains high precision, while subsequent results use lower precision representations (such as binary increase/decrease indicators), thereby reducing overall report overhead while preserving critical information.
Data Source
AI summary
A user terminal according to one aspect of the present disclosure includes: a transmitting section that transmits an uplink signal; and a control section that uses, for the uplink signal, a sequence corresponding to information including whether change of a beam is necessary. According to one aspect of the present disclosure, overhead of a beam report can be reduced appropriately.