Beam Failure Reporting via Aperiodic CSI Trigger States
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in reporting beam failures, leading to unnecessary resource allocation and increased signaling overhead between base stations and terminals.
Innovation Solution
A method for a terminal to report beam failures by receiving configuration information for trigger states related to aperiodic channel state information (CSI) reporting, detecting beam failures, and transmitting relevant beam information to the base station, minimizing unnecessary resource allocation and reducing signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam failure reporting is performed for all cells, then comprehensive beam failure detection is achieved, but signaling overhead and resource allocation increase
Solution Approach 1:
The patent segments the beam failure reporting by cell, allowing the terminal to separately identify and report beam failures for individual cells rather than treating all cells uniformly. This enables selective reporting based on which cells actually experience beam failures, reducing unnecessary signaling for cells without failures.
Solution Approach 2:
The patent applies local quality by configuring different beam failure detection parameters and reporting mechanisms for different cells based on their specific characteristics and failure conditions. Each cell can have customized detection thresholds and reporting requirements, optimizing the balance between detection coverage and signaling overhead for each location.
2Reliability
If beam failure reporting is performed for all cells, then comprehensive beam failure detection is achieved, but resource allocation increases
Solution Approach 1:
The patent segments resource allocation for beam failure reporting by cell, allocating uplink resources dynamically based on which cells actually experience beam failures. This prevents wasteful allocation of resources for cells without failures while ensuring adequate resources are available for cells that need reporting.
Solution Approach 2:
The patent implements partial action by having the terminal report beam failures only for the subset of cells that actually experience failures rather than all configured cells. This reduces the amount of reporting resources needed while maintaining detection coverage for problematic areas.
3Adaptability or versatility
If configuration information for multiple trigger states is provided, then flexible CSI reporting is enabled, but device complexity increases
Solution Approach 1:
The patent makes the trigger states universal by designing them to handle multiple scenarios (different cells, different beam failure conditions) through a standardized configuration framework. The same trigger state mechanism can be applied across multiple cells with different parameters, reducing the need for separate complex configurations for each scenario.
Data Source
AI summary
Disclosed are: a method for a terminal, in a wireless communication system comprising the terminal and a base station including a plurality of cells, to report a beam failure of at least one cell among a plurality of cells set to the terminal; and a terminal and a base station supporting same. According to one applicable embodiment, the terminal can report beam failure information to the base station more efficiently, on the basis of a specific CSI trigger state called/directed from the base station and the at least one cell in which beam failure has occurred, and in response, the base station can recognize, with low signaling overhead, the beam failure of the at least one cell.