Beam Failure Detection Reference Sets for Multi-TRP URLLC
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Solution Overview
Problem
Existing wireless communication systems face challenges in effectively detecting beam failures, particularly in multi-TRP transmission scenarios, which can be exacerbated by RF blockage from moving objects, leading to sudden drops in signal strength and reliability issues for URLLC transmissions.
Innovation Solution
The implementation of a method and apparatus for determining multiple beam failure detection reference signal sets, assessing radio link quality, and indicating a suitable set based on threshold conditions to ensure reliable communication, utilizing multi-TRP transmission techniques such as SDM, FDM, and TDM for enhanced reliability and robustness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single beam failure detection reference signal set is used, then the system complexity is low, but the reliability of URLLC transmissions deteriorates due to RF blockage from moving objects
Solution Approach 1:
The patent divides the beam failure detection reference signal resources into multiple sets (first set and second set), each associated with different transmission reception points (TRPs). This segmentation allows the system to detect beam failures independently for each TRP, improving reliability in multi-TRP scenarios without requiring a complete redesign of the detection mechanism.
Solution Approach 2:
The patent introduces a new dimension to beam failure detection by implementing multi-TRP transmission with separate reference signal sets for each TRP. This dimensional expansion from single-set to multi-set detection enables the system to handle spatial diversity and RF blockage scenarios more effectively, achieving higher reliability.
2Reliability
If multiple beam failure detection reference signal sets are implemented for multi-TRP transmission, then the reliability of URLLC transmissions improves, but the device complexity increases
Solution Approach 1:
The patent segments the beam failure detection reference signal resources into multiple sets, each associated with different TRPs. This segmentation allows independent monitoring of each TRP's beam quality, improving reliability while keeping each individual detection set manageable in complexity.
Solution Approach 2:
The system automatically selects the appropriate reference signal set based on which TRP is currently being served. This self-service mechanism eliminates the need for complex manual configuration and switching, reducing operational complexity while maintaining multiple sets for reliability.
3Reliability
If beam failure detection is performed without multi-TRP techniques, then the system operation is simple, but the robustness against RF blockage deteriorates
Solution Approach 1:
The patent segments reference signal monitoring into multiple sets associated with different TRPs, enabling the system to switch between TRPs when RF blockage occurs. This segmentation provides robustness while maintaining relatively simple operation through automated set selection based on serving TRP status.
Solution Approach 2:
The system dynamically changes the active reference signal set parameter based on which TRP is currently serving the user equipment. This parameter switching allows the system to adapt to RF blockage conditions without requiring complex operational procedures, maintaining ease of use while improving robustness.
Data Source
AI summary
Apparatuses, methods, and systems are disclosed for indicating a beam failure detection reference signal. One method includes determining a first beam failure detection reference signal set and a second beam failure detection reference signal set for a serving cell. The method includes determining a radio link quality of reference signal resource configurations in each of the first beam failure detection reference signal set and the second beam failure detection reference signal set. The method includes indicating an indication of a third beam failure detection reference signal set selected from a group comprising the first beam failure detection reference signal set and the second beam failure detection reference signal set in response to the radio ink quality for all corresponding reference signal resource configurations in the third beam failure detection reference signal set being less than a threshold.