Sidelink Resource Selection Using SCI Reservations and RSRP Thresholds
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems, particularly in V2X systems, face challenges with power and resource limitations in battery-powered UE devices, leading to increased latency, decreased battery life, and degraded communication due to varying power capabilities among UEs.
Innovation Solution
A method for allocating sidelink resources in V2X systems that considers the power capabilities of different UEs, such as vehicles and pedestrians, by implementing full sensing for high-powered UEs and partial or no sensing for low-powered UEs, and adjusting resource allocation to minimize collisions and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If full sensing is implemented for resource allocation, then communication reliability is improved, but power consumption increases
Solution Approach 1:
The patent applies local quality by differentiating sensing requirements based on UE power capability categories. High-powered UEs perform full sensing to ensure high communication reliability, while low-powered UEs perform partial or no sensing to conserve battery energy. This localized adaptation of sensing depth to specific device characteristics resolves the contradiction between reliability and power consumption.
Solution Approach 2:
The patent implements dynamic resource allocation where the sensing depth and resource selection strategy are adjusted based on the UE's power capability category. The system dynamically adapts the sensing process from full sensing for high-powered devices to partial or no sensing for low-powered devices, allowing the operation mode to change according to device-specific constraints.
2Duration of action of moving object
If resource allocation optimizes for low-powered UEs, then battery life is extended, but latency increases
Solution Approach 1:
The patent applies partial action by implementing partial sensing for low-powered UEs instead of full sensing. This partial sensing approach reduces the time and energy required for resource allocation, extending battery life while maintaining acceptable latency performance through selective resource pool monitoring.
3Reliability
If sensing is performed by all UEs, then resource collision is reduced, but device complexity increases
Solution Approach 1:
The patent applies local quality by assigning different sensing obligations to different UE power capability categories. High-powered UEs perform comprehensive sensing to reduce resource collisions, while low-powered UEs perform reduced or no sensing. This differentiated approach reduces overall device complexity in the network while maintaining collision reduction where it matters most.
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
A user equipment (UE) configured to determine a resource selection window which identifies a first set (e.g., a total set) of candidate resources. The UE may then remove one or more candidate resources from the first set of candidate resources in response to receiving sidelink control information (SCI) from a pedestrian UE with a reservation of the one or more first candidate resources. After removal of these candidate resources from the initial or first set based on their presumed unavailability, the result may be a second set of candidate resources, which may be a subset of the initial or first set for use in communicating with a third UE. The UE may also be configured to remove candidate resources based on a reference signal receive power (RSRP) threshold which can also be adjusted based on a maximum value or a highest priority of the pedestrian UE' s data.