Beam Failure Detection Reference Signal Update in NR Terminals
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Solution Overview
Problem
In next-generation mobile communication systems like NR, the method for determining a beam failure detection reference signal (BFD RS) is not clear, leading to potential throughput decrease and communication quality deterioration.
Innovation Solution
A terminal equipped with a receiving section to receive a configuration of a first reference signal for beam failure detection (BFD) and a control section to update the signal based on medium access control-control elements (MAC CE).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a beam failure detection reference signal is not appropriately determined, then the beam failure detection procedure can be implemented, but throughput decreases and communication quality deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple reference signals (first reference signal for BFD and second reference signal for quality assessment) before beam failure occurs. The terminal is equipped with these signals in advance, allowing immediate and accurate beam failure detection when needed, thereby maintaining throughput while ensuring reliability.
Solution Approach 2:
The patent introduces an intermediary mechanism by using the first reference signal as a mediator for beam failure detection and the second reference signal as a mediator for communication quality assessment. These intermediary signals enable the terminal to accurately determine beam status without directly impacting the main data transmission, thus preventing throughput loss while improving detection accuracy.
2Reliability
If the BFD RS determination method is clarified, then communication quality improves, but the system complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the reference signal functionality into distinct segments: a first reference signal specifically for beam failure detection and a second reference signal specifically for communication quality assessment. This segmentation allows each signal to have a dedicated purpose, simplifying the determination method while improving communication quality through specialized signal design.
Data Source
AI summary
A terminal according to an aspect of the present disclosure includes: a receiving section that receives a configuration of a first reference signal for beam failure detection (BFD) and receives a medium access control-control element (MAC CE); and a control section that updates the first reference signal based on the MAC CE. According to an aspect of the present disclosure, it is possible to appropriately determine a BFD RS.