Interlaced Resource Pool Configuration for Sidelink Sensing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing resource pool configuration methods for sidelink communication and sensing in wireless sensing systems lead to reduced system capacity due to orthogonal resource pools, impacting distance and Doppler estimation requirements.
Innovation Solution
Configuring resource pools with interlaced structures in the frequency domain for positioning and sensing, allowing for wide bandwidth and unambiguous Doppler estimation while ensuring communication resource availability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensing resource pools are configured with large bandwidth for distance estimation resolution, then sensing performance is improved, but system capacity for SL communication is reduced
Solution Approach 1:
The frequency spectrum is segmented into multiple resource pools with different bandwidth characteristics. Wide bandwidth resource pools are allocated for sensing services to ensure distance estimation resolution, while narrow bandwidth resource pools are allocated for communication services to maintain system capacity. This segmentation allows both requirements to be satisfied simultaneously without mutual interference.
Solution Approach 2:
Different local regions of the frequency spectrum are assigned different quality characteristics. Certain frequency bands are designated with wide bandwidth properties for sensing applications requiring high resolution, while other bands are designated with narrow bandwidth properties for communication applications requiring high capacity. This local differentiation resolves the contradiction by matching resource characteristics to specific service requirements.
2Measurement precision
If sensing resource pools use time division multiplexing with small repetition period for large unambiguous Doppler estimation range, then sensing performance is improved, but system capacity for SL communication is reduced
Solution Approach 1:
The time domain is segmented into different resource pool configurations. Some resource pools are configured with small repetition periods for sensing services requiring large unambiguous Doppler estimation ranges, while other resource pools are configured with larger repetition periods or different time characteristics for communication services. This temporal segmentation allows both sensing and communication services to coexist without mutual interference.
Solution Approach 2:
The solution moves from a single-dimension time-domain multiplexing approach to a multi-dimensional approach combining time and frequency domain resources. By utilizing both time division and frequency division multiplexing, the system can allocate resources in multiple dimensions simultaneously, providing flexibility to satisfy both sensing requirements (small repetition period) and communication requirements (system capacity) without the limitations of single-dimension multiplexing.
Data Source
Figure 1~3
Figure 4~5
Figure 6
AI summary
This application relates to a resource pool configuration method, an apparatus, and a system. A first apparatus obtains first configuration information, where the first configuration information is used to configure a first resource pool for the first apparatus, the first resource pool is used by the first apparatus for positioning and/or sensing, the first resource pool includes at least one first interlaced structure in frequency domain, each first interlaced structure of the at least one first interlaced structure includes a plurality of interlaced units, and adjacent interlaced units in the plurality of interlaced units in each first interlaced structure are non-contiguous in frequency domain. The configured resource pool for positioning and/or sensing in embodiments of this application can ensure requirements of positioning services and/or sensing services, as well as requirements of communication services.