Sidelink Resource Pool Selection Across LBT Sub-Bands
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing sidelink communication systems face inefficiencies in resource allocation and coordination among wireless devices, leading to suboptimal utilization of available resources and interference issues.
Innovation Solution
A mechanism for sidelink resource selection that utilizes a plurality of sidelink resource pools, enabling dynamic and efficient allocation based on device capabilities and traffic conditions, with potential enhancements through inter-UE coordination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single sidelink resource pool is used for resource allocation, then the system is simple to manage, but resource utilization is suboptimal and interference issues arise
Solution Approach 1:
The patent divides the sidelink resource pool into multiple resource pools, each configured with different parameters such as time-frequency resources, priority levels, and access conditions. This segmentation allows the system to allocate resources more efficiently by directing different types of traffic to appropriate pools, thereby improving resource utilization while managing complexity through structured organization
Solution Approach 2:
The patent implements dynamic resource pool configuration where resource pools can be activated, deactivated, or reconfigured based on traffic conditions, device capabilities, and network requirements. This dynamic approach enables the system to adapt to changing conditions and optimize resource utilization without requiring permanent complex configurations for all possible scenarios
2Device complexity
If resource allocation is centralized, then coordination is simplified, but interference management becomes suboptimal
Solution Approach 1:
The patent enables wireless devices to perform autonomous resource selection within configured resource pools based on local channel conditions, interference measurements, and traffic requirements. Each device can independently sense the channel and select resources that minimize local interference, providing locally optimized interference management while maintaining overall system coordination through shared configuration parameters
3Ease of operation
If autonomous resource selection is enabled, then device autonomy increases, but resource allocation efficiency decreases
Solution Approach 1:
The patent pre-configures multiple resource pools with optimized parameters for different traffic types, service requirements, and channel conditions before autonomous selection begins. This preliminary configuration provides a structured framework that guides autonomous device decisions, ensuring that even autonomous selections are made from pre-validated options that optimize resource allocation efficiency
Data Source
AI summary
A first wireless device receives, from a base station, a message indicating configuration of a plurality of resource pools of a sidelink bandwidth part (BWP) for sidelink communications. The first wireless device selects at least two resource pools of the plurality of resource pools based on the at least two resource pools being within a listen-before-talk (LBT) sub-band of the sidelink BWP. Based on performing a resource selection procedure in the at least two resource pools, the first wireless device selects, for one or more sidelink transmissions, a sidelink grant comprising one or more radio resources of the at least two resource pools. The first wireless device transmits, to a second wireless device and based on performing listen-before-talk (LBT) on the LBT sub-band, the one or more sidelink transmissions via the one or more radio resources in the LBT sub-band.