NR V2X Resource Selection with Preemption for Reliable Low-Latency Links
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Solution Overview
Problem
Existing 5G communication systems face challenges in supporting higher data rates and reliable vehicle-to-vehicle communication, particularly in scenarios where conventional resource selection methods fail to meet the latency and reliability requirements of advanced vehicular applications.
Innovation Solution
The implementation of enhanced resource selection mechanisms, including preemption indications, separate resource pools for different latency requirements, and hybrid LBT and autonomous resource selection, to optimize resource allocation in vehicle-to-everything (V2X) communications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional resource selection methods are used in 5G V2X communications, then device complexity is reduced, but reliability and latency performance deteriorate and fail to meet advanced vehicular application requirements
Solution Approach 1:
The patent segments the resource pool into multiple sub-pools based on latency requirements. High-latency tolerant traffic uses one sub-pool while low-latency traffic uses another, allowing differentiated resource selection strategies that improve overall reliability without requiring complete redesign of the resource selection mechanism
Solution Approach 2:
The patent implements preemption indications that are prepared and signaled in advance before actual resource conflicts occur. This preliminary action allows high-priority traffic to reserve resources proactively, preventing latency issues before they arise and improving communication reliability
2Loss of time
If separate resource pools are implemented for different latency requirements, then latency performance improves, but device complexity increases due to multiple resource pools and hybrid selection mechanisms
Solution Approach 1:
The patent applies different resource selection qualities to different resource pools. High-latency tolerant pools use conventional selection methods while low-latency pools use preemption-based methods. This local differentiation optimizes latency performance for time-critical traffic without complicating the overall system beyond necessity
Solution Approach 2:
The patent introduces dynamic preemption indications that allow resource allocation to adapt in real-time based on traffic priority and channel conditions. This dynamic adjustment reduces latency for urgent communications while maintaining manageable complexity through standardized preemption signaling mechanisms
3Productivity
If hybrid LBT and autonomous resource selection is implemented, then resource utilization efficiency improves, but ease of operation deteriorates due to complex coordination requirements
Solution Approach 1:
The patent creates a universal preemption indication mechanism that works across both LBT-based and autonomous resource selection modes. This multi-functional approach improves resource utilization efficiency by enabling coordinated resource management while maintaining ease of operation through a unified signaling framework that handles both operational modes
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 IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method of a first user equipment (UE) in a wireless communication system is provided.