NR Sidelink Resource Pool Segmentation for Sensing UE Interference Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In NR SL systems, random resource selection by non-sensing UEs leads to interference with adjacent UEs, affecting the transmission performance of high-priority sensing UEs, as they have to avoid interfering resources, resulting in resource conflicts.
Innovation Solution
Implementing a method that adjusts different sensing thresholds based on resource zones within a shared resource pool to prioritize resource allocation for high-priority sensing UEs, ensuring they avoid conflicts with non-sensing UEs while maintaining sufficient available resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If random resource selection is used by non-sensing UEs, then resource allocation simplicity is improved, but interference with adjacent sensing UEs increases
Solution Approach 1:
The resource pool is divided into multiple resource zones, with different zones allocated to different UE types (sensing UEs vs. non-sensing UEs). This segmentation allows non-sensing UEs to use random selection in their designated zones while sensing UEs operate in separate zones, eliminating interference between the two groups.
Solution Approach 2:
The base station acts as an intermediary by configuring and managing the resource zone divisions. It assigns specific resource zones to different UE types and priorities, mediating between the simple random selection mechanism and the need to protect sensing UEs from interference.
2Object-affected harmful factors
If sensing UEs avoid interfering resources, then interference to non-sensing UEs is reduced, but transmission performance of sensing UEs deteriorates
Solution Approach 1:
By segmenting the resource pool into dedicated zones for sensing and non-sensing UEs, sensing UEs no longer need to avoid resources used by non-sensing UEs. They can freely select resources in their designated zones, maintaining high transmission performance while preventing interference to other UEs through spatial separation.
3Reliability
If multiple resource zones are divided in resource pool, then resource conflicts between different UE types are reduced, but device complexity increases
Solution Approach 1:
Multiple resource zones are merged under a unified management framework controlled by the base station. The base station handles the complexity of zone configuration and UE assignment, while UEs simply follow the assigned zone rules, distributing the complexity management burden from individual UEs to the network controller.
4Productivity
If high-priority sensing UEs share resource pool with non-sensing UEs, then resource utilization is improved, but transmission performance of high-priority UEs deteriorates
Solution Approach 1:
Different quality levels of service are provided in different resource zones. High-priority sensing UEs are allocated specific zones with guaranteed resources and favorable conditions, while lower-priority or non-sensing UEs operate in other zones. This local differentiation ensures high-priority UEs maintain excellent transmission performance while the overall system achieves high resource utilization through comprehensive pool usage.
Data Source
AI summary
A first node receives a first signaling, the first signaling indicates a first resource pool and X1 resource sub-pools, and the X1 resource sub-pools belong to the first resource pool; determines a candidate resource set out of the first resource pool; transmits a target signal on a target time-frequency resource block, and the target time-frequency resource block belongs to the candidate resource set; a target resource subset belongs to a target resource sub-pool; a first priority is used to determine X1 first-type thresholds; the X1 resource sub-pools respectively correspond to the X1 first-type thresholds; a target threshold is a first-type threshold corresponding to the target resource sub-pool among the X1 first-type thresholds, and the target threshold is used to determine the target resource subset out of the target resource sub-pool. The present application strikes a balance between resource utilization and interference avoidance for users of a shared resource pool.