Sidelink Failure Detection Using Radio Link Quality
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Solution Overview
Problem
Sidelink failures occur in wireless communications networks, leading to disruptions in direct device-to-device communication.
Innovation Solution
Implementing methods and apparatuses for sidelink failure detection and recovery, including determining radio link quality and initiating recovery procedures based on sidelink failure detection resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sidelink communication is implemented for direct device-to-device connectivity, then communication reliability is improved, but susceptibility to link failures increases due to direct exposure without network infrastructure protection
Solution Approach 1:
The patent implements preliminary failure detection mechanisms by continuously monitoring radio link quality metrics (such as RSRP, SINR) before complete link failure occurs. The system pre-identifies degradation trends and triggers recovery procedures in advance, preventing total communication breakdown and maintaining service continuity.
Solution Approach 2:
The patent establishes a feedback loop where the UE continuously monitors sidelink channel conditions, compares measured quality against thresholds, and adjusts transmission parameters or initiates recovery actions based on the feedback. This closed-loop system enables dynamic adaptation to changing link conditions and rapid response to failures.
2Measurement precision
If continuous monitoring of radio link quality is performed to detect failures early, then detection precision is improved, but energy consumption increases
Solution Approach 1:
The patent implements periodic monitoring of radio link quality at configured intervals rather than continuous monitoring. The network configures monitoring periodicity and resource allocation, allowing the UE to balance detection accuracy with energy conservation by sampling channel conditions at optimized time points.
Solution Approach 2:
The patent dynamically adjusts monitoring parameters such as measurement thresholds, resource allocation, and evaluation criteria based on current channel conditions, service requirements, and battery status. This allows the system to optimize the trade-off between detection precision and energy consumption adaptively.
3Reliability
If rapid failure recovery procedures are implemented, then service continuity is improved, but system complexity increases
Solution Approach 1:
The patent pre-configures recovery resources and alternative communication paths before failures occur. The network provides pre-allocated resources for recovery transmissions and establishes backup configurations in advance, enabling rapid switch-over without complex real-time decision-making during failure events.
Solution Approach 2:
The patent enables the UE to autonomously execute recovery procedures based on pre-configured instructions and local measurements. The device performs self-diagnosis, selects appropriate recovery actions from predefined options, and implements corrections without requiring constant network intervention, reducing overall system complexity while maintaining rapid response.
Data Source
AI summary
Apparatuses, methods, and systems are disclosed for sidelink failure detection and recovery. One method includes receiving information indicating a sidelink failure detection resource set corresponding to at least one configured sidelink bandwidth part. The method includes determining a radio link quality of the at least one configured sidelink bandwidth part based on the sidelink failure detection resource set. The method includes detecting a sidelink failure based on the radio link quality. The method includes initiating a sidelink failure recovery procedure based on the sidelink failure.