5G Sidelink Resource Coordination With Conflict Feedback
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Solution Overview
Problem
The 3GPP Release 17 sidelink enhancement aims to enhance reliability and reduce latency through inter-UE coordination by determining a set of resources at UE-A and indicating them to UE-B, but existing mechanisms do not effectively address conflicts in resource allocation.
Innovation Solution
A method and apparatus for inter-UE coordination signaling, where a UE determines SL resources through sensing and exclusion, transmits information about these resources, and receives feedback on potential conflicts, adjusting resource selection based on conflict resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If inter-UE coordination is implemented by having UE-A determine and indicate resources to UE-B, then resource allocation reliability is improved, but resource allocation complexity increases due to conflict detection and resolution requirements
Solution Approach 1:
The patent implements feedback mechanism where UE-B sends coordination feedback to UE-A indicating whether the indicated resources are available or have conflicts. This feedback loop enables UE-A to adjust resource indication based on actual resource availability, improving reliability while maintaining manageable complexity through iterative refinement.
Solution Approach 2:
The patent applies preliminary action by having UE-A determine and indicate resources to UE-B before actual transmission occurs. This advance resource coordination allows conflicts to be identified and resolved beforehand, improving resource allocation reliability while the complexity is managed through structured preliminary planning.
2Reliability
If SL resources are determined through sensing and exclusion with conflict resolution feedback, then resource allocation reliability is improved, but transmission latency increases due to additional signaling rounds
Solution Approach 1:
The patent performs resource determination and conflict resolution in advance before actual data transmission. By completing sensing, resource selection, and coordination feedback exchanges beforehand, the system ensures reliable resource allocation while minimizing latency during the actual transmission phase.
Solution Approach 2:
The patent implements periodic resource determination and coordination cycles. Resources are determined and coordinated in periodic intervals, allowing the system to balance reliability improvements through thorough conflict resolution with latency reduction by establishing resources in advance for subsequent transmissions.
3Reliability
If inter-UE coordination signaling is implemented to resolve resource conflicts, then resource allocation reliability is improved, but device complexity increases due to additional signaling overhead
Solution Approach 1:
The patent uses feedback signaling where UE-B provides coordination information to UE-A about resource availability. This structured feedback mechanism improves resource allocation reliability by enabling conflict detection and resolution while managing signaling complexity through standardized feedback formats and processes.
Solution Approach 2:
The patent introduces coordination signaling as an intermediary mechanism between UE-A and UE-B. This intermediary feedback channel enables resource conflict resolution while managing overall system complexity by providing a structured, standardized method for exchange rather than requiring complex direct coordination between all devices.
Data Source
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AI summary
The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the loT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The present disclosure relates to methods and apparatuses for inter user equipment (UE) coordination signaling.