NR V2X Burst Transmission Resource Selection with Adaptive RSRP Thresholds
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing bursty traffic and resource allocation for sidelink communication in V2X scenarios, particularly in next-generation radio access technologies like NR, which require enhanced reliability and low latency.
Innovation Solution
A method for selecting burst transmission resources based on sensing, using a higher RSRP threshold for efficient sidelink communication, and transmitting sidelink control information and MAC PDUs through physical channels to optimize resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single RSRP threshold is used for resource selection, then the resource selection process is simple, but it cannot efficiently handle both bursty and non-bursty traffic with different reliability requirements
Solution Approach 1:
The patent applies local quality by introducing different RSRP thresholds for different traffic types. Specifically, a first RSRP threshold is used for bursty traffic and a second RSRP threshold is used for non-bursty traffic, allowing each traffic type to be evaluated with appropriate criteria rather than using a uniform threshold for all scenarios.
Solution Approach 2:
The patent implements dynamics by making the RSRP threshold adaptive based on traffic characteristics. The system dynamically selects between the first RSRP threshold for bursty traffic and the second RSRP threshold for non-bursty traffic, enabling the resource selection process to adapt to varying traffic conditions and requirements.
2Reliability
If resources are selected without considering bursty traffic patterns, then resource selection is straightforward, but transmission reliability and latency performance deteriorate for bursty traffic
Solution Approach 1:
The patent applies preliminary action by performing sensing and resource selection in advance for bursty traffic. The UE identifies suitable resources before actual transmission occurs, ensuring that reliable resources are pre-selected for bursty traffic patterns, which improves transmission reliability while managing complexity through advance planning.
Solution Approach 2:
The patent implements parameter changes by adjusting the RSRP threshold parameter based on traffic type. For bursty traffic, the first RSRP threshold is applied with modified resource selection criteria compared to non-bursty traffic, allowing the system to optimize reliability for bursty traffic by changing the evaluation parameters.
3Productivity
If sensing-based resource selection is performed for all traffic, then resource allocation is comprehensive, but processing time and complexity increase unnecessarily for non-bursty traffic
Solution Approach 1:
The patent applies partial action by performing comprehensive sensing-based resource selection only for bursty traffic where it is most needed, while using a simplified approach for non-bursty traffic. This selective application of sensing processing improves overall resource allocation efficiency by avoiding unnecessary complex processing for traffic types that do not require it.
Solution Approach 2:
The patent implements local quality by applying different resource selection strategies to different traffic types. Bursty traffic receives comprehensive sensing-based resource selection with appropriate thresholds, while non-bursty traffic uses a different approach, optimizing processing efficiency by matching the complexity of resource selection to the actual needs of each traffic type.
Data Source
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AI summary
Proposed is an operation method of a first device (100) in a wireless communication system. The method may comprise the steps of: selecting a burst transmission resource including multiple transmission resources within a selection window on the basis of sensing, wherein a first reference signal received power (RSRP) threshold used in selection of the burst transmission resource is greater than a second RSRP threshold used in selection of a non-burst transmission resource; on the basis of the burst transmission resource, transmitting sidelink control information (SCI) for scheduling of a physical sidelink shared channel (PSSCH) to a second device (200) through a physical sidelink control channel (PSCCH), the SCI including information related to the burst transmission resource; and, on the basis of the burst transmission resource, transmitting a medium access control (MAC) protocol data unit (PDU) to the second device (200) through the PSSCH.