Sidelink Resource Sub-pool Partitioning for Radar Transmissions
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing sidelink and radar transmissions over shared resource pools, leading to potential interference and reduced spectral efficiency.
Innovation Solution
The proposed solution involves partitioning the sidelink resource pool into two sub-pools: one dedicated for radar transmissions using FMCW waveforms and another for sidelink transmissions. This allows for coordinated multiplexing of radar transmissions, reducing interference and enhancing spectral efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If sidelink and radar transmissions share the same resource pool, then resource utilization is improved, but interference between transmissions increases
Solution Approach 1:
The patent divides the shared sidelink resource pool into multiple sub-pools, where each sub-pool is dedicated to specific transmission types (e.g., radar transmissions, sidelink transmissions). This segmentation allows different transmission types to operate in separate resource subsets, reducing mutual interference while maintaining overall resource utilization efficiency.
2Measurement precision
If dedicated resources are allocated for radar transmissions, then sensing performance is improved, but resource pool flexibility decreases
Solution Approach 1:
The patent implements dynamic resource allocation within the sub-pool structure, where the network entity can configure and adjust which resource subsets are allocated to radar versus sidelink transmissions based on current network conditions, traffic demands, and sensing requirements. This dynamic approach maintains sensing performance while preserving resource pool flexibility.
Solution Approach 2:
The resource pool is designed with multi-functional sub-pools that can be dynamically assigned different purposes. The same physical resource pool can serve both radar sensing and sidelink communication functions through configurable sub-pool assignments, maintaining versatility while providing dedicated resources for improved sensing performance.
3Reliability
If resource partitioning is implemented, then collision probability is reduced, but system complexity increases
Solution Approach 1:
The patent segments the resource pool into sub-pools with clear demarcations and assignment rules. Each sub-pool is associated with specific transmission types, and the network entity manages the segmentation through configuration signaling. This structured segmentation reduces collision probability between different transmission types while keeping the segmentation management complexity manageable through standardized procedures.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a network entity, a sidelink resource sub-pool configuration that indicates a partition of a sidelink resource pool into a first sidelink resource sub-pool associated with radar transmissions and a second sidelink resource sub-pool associated with sidelink transmissions. The UE may transmit a radar transmission using resources of the first sidelink resource sub-pool based at least in part on the sidelink resource sub-pool configuration. Numerous other aspects are described.