Sidelink Resource Selection via Priority-Based Exclusion
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Solution Overview
Problem
Current mobile communication networks face challenges in efficiently managing radio resources for sidelink transmissions, particularly in scenarios involving a mix of wireless devices with different capabilities and technologies, leading to suboptimal data transfer and network congestion.
Innovation Solution
The implementation of a mechanism that selectively configures radio resources based on criteria such as wireless device categories, traffic load, and packet sizes to optimize sidelink transmissions, allowing for dynamic bandwidth adaptation and resource allocation within the New Radio (NR) framework.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If radio resources are allocated using legacy mechanisms without differentiation, then device compatibility is maintained, but resource utilization efficiency deteriorates
Solution Approach 1:
The patent applies local quality by differentiating resource allocation mechanisms based on device categories. Different wireless devices (e.g., UE1, UE2, UE3 with different capabilities) are assigned different resource pools, transmission parameters, and bandwidth configurations according to their specific capabilities and service requirements, rather than applying a uniform allocation scheme to all devices.
Solution Approach 2:
The patent implements dynamics through dynamic bandwidth adaptation and flexible resource allocation. The system can dynamically adjust the bandwidth part (BWP) size, resource pool configuration, and transmission parameters based on real-time traffic load, device mobility, and network conditions, allowing the resource allocation to adapt to changing requirements rather than being static.
2Speed
If bandwidth is increased for high data transfer rates, then data transfer rate is improved, but network congestion increases
Solution Approach 1:
The patent applies segmentation by dividing the available radio resources into multiple separate resource pools and bandwidth parts (BWPs). Different device categories are assigned to different resource pools with specific bandwidth configurations. This segmentation allows high-data-rate devices to use larger bandwidth portions while other devices use smaller portions, preventing any single device from causing overall network congestion while still achieving high transfer rates where needed.
3Productivity
If resource allocation is optimized for specific device categories, then data transfer efficiency is improved, but system complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple resource pools with different bandwidth parts (BWPs) and transmission parameters before devices need them. Device category information is used to pre-assign appropriate resource pools and BWPs based on anticipated device capabilities and service types. This preliminary configuration reduces the complexity of real-time decision-making while maintaining optimized resource allocation for different device categories.
Data Source
AI summary
A wireless device initializes a candidate resource set. The candidate resource set comprises candidate resources in a selection window. The wireless device receives a second sidelink transmission. The second sidelink transmission comprises sidelink control information (SCI). The SCI indicates first resources during the selection window. The SCI indicates a priority of the second sidelink transmission. The priority is used for excluding the first resources from the candidate resource set. The wireless device excludes the first resources from the candidate resource set based on the priority being higher than a first priority threshold. The wireless device selects second resources from the candidate resource set based on the excluding of the first resources from the candidate resource set. The wireless device transmits a first sidelink transmission via the second resources.