UE Beam Failure Detection and Reporting for Wireless Reliability
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing beams in a wireless communication system, particularly in detecting and reporting beam failure or partial beam failure in multiple cells, which can lead to throughput loss and reduced communication reliability.
Innovation Solution
A method for a terminal to detect beam failure (BF) or partial BF in one or more cells and transmit an uplink signal to a base station, including identification information and BF or partial BF information, to facilitate beam management and minimize throughput loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam failure detection is performed in multiple cells, then communication reliability is improved, but device complexity and signaling overhead increase
Solution Approach 1:
The patent segments beam failure detection and reporting by cell, allowing the terminal to independently detect and report BF/PBF for each configured cell. This enables targeted monitoring without requiring full-system complexity, resolving the contradiction between multi-cell reliability and device complexity.
Solution Approach 2:
The patent applies different detection thresholds and reporting mechanisms for different cells based on their specific conditions. Each cell can have customized BFD configurations, allowing optimal local detection performance without uniformly increasing complexity across all cells.
2Speed
If beam failure reporting is transmitted frequently, then beam management speed is improved, but uplink resource consumption increases
Solution Approach 1:
The patent implements periodic beam failure detection and reporting mechanisms where the terminal monitors beam quality at regular intervals and reports only when failure conditions are met. This periodic approach enables fast beam management response while avoiding continuous uplink transmissions that would consume excessive resources.
Solution Approach 2:
The patent establishes a feedback loop where the terminal reports beam failure status to the base station, which then adjusts beam configurations accordingly. This feedback mechanism enables efficient beam management by transmitting information only when necessary to correct beam issues, rather than continuous reporting.
Data Source
AI summary
The present disclosure provides a method for, in a wireless communication system comprising a UE and a base station including a plurality of cells, performing beam management by the UE via reporting a beam failure or partial beam failure related to one or more cells among a plurality of cells configured to the UE, and a UE and a base station which support the method. According to an embodiment applicable to the present disclosure, a UE can report a beam failure or partial beam failure on one or more cells to a base station, and the base station can quickly recognize the beam failure or partial beam failure on the one or more cells in response thereto.