Per-TRP Beam Failure Detection in Multi-TRP 5G Systems
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Solution Overview
Problem
Current beam failure detection and recovery procedures in 5G wireless systems are limited, as they require all transmission reception points (TRPs) to fail before initiating a full beam failure recovery procedure, which can lead to delayed recovery and increased latency in multi-TRP scenarios.
Innovation Solution
The proposed solution involves configuring the user equipment (UE) to detect beam failures on a per-TRP basis, allowing for rapid notification of network entities about individual TRP failures, and enabling TRP-specific beam failure recovery procedures without requiring all TRPs to fail.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam failure detection is performed on all TRPs simultaneously, then system reliability is improved, but recovery time increases and latency increases
Solution Approach 1:
The patent segments the beam failure detection process by TRP, allowing independent detection and notification for each TRP. The UE monitors beam failures per-TRP and notifies the network entity separately for each failed TRP, enabling granular recovery actions rather than waiting for all TRPs to fail before initiating recovery procedures.
2Reliability
If comprehensive beam failure recovery procedure is initiated, then all TRPs are recovered, but latency increases and recovery time increases
Solution Approach 1:
The recovery procedure is segmented by TRP, with separate recovery processes initiated for each failed TRP based on per-TRP failure notifications. This allows the network entity to recover individual TRPs independently rather than waiting for a comprehensive failure of all TRPs before acting.
Solution Approach 2:
The UE performs preliminary beam failure detection and notification for individual TRPs before initiating full recovery procedures. This preliminary action allows the network entity to prepare recovery resources and take preventive measures for specific failed TRPs, reducing overall recovery time.
3Speed
If per-TRP beam failure detection is implemented, then recovery speed is improved and latency is reduced, but device complexity increases
Solution Approach 1:
The detection complexity is segmented and distributed - the UE handles per-TRP detection independently for each TRP, and the network entity processes notifications separately. This modular approach manages complexity by breaking down the monolithic detection system into manageable per-TRP units.
Data Source
AI summary
According to one example embodiment, a method may include receiving, by a user equipment, at least one network entity failure indication configuration. The method may further include detecting, by the user equipment, that at least one first network entity satisfies at least one beam-failure condition. The method may further include selecting, by the user equipment, one or more of at least one resource and at least one parameter based on the at least one received network entity failure indication configuration. The method may further include transmitting, by the user equipment, the at least one indication of the at least one first network entity that satisfies the at least one beam-failure condition to at least one second network entity.