NR Sidelink Terminal Partial Sensing Resource Selection
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Solution Overview
Problem
In NR sidelink communication, the process of autonomous resource selection and reevaluation or preemption check during partial sensing is unclear, particularly in cases involving periodic resource reservations.
Innovation Solution
A terminal is equipped with a reception unit for receiving signals from other terminals, a control unit to determine available resources based on sensing results, and a transmission unit to select and transmit using these resources, with the control unit determining the procedure for reevaluation or preemption checks based on resource reservation types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If partial sensing is performed to save power and reduce complexity, then energy consumption and device complexity are reduced, but the clarity and reliability of resource selection procedure become uncertain
Solution Approach 1:
The resource pool is segmented into multiple resource pools based on periodicity, where each resource pool corresponds to a specific periodicity value. This segmentation allows the terminal to perform partial sensing on selected resource pools rather than the entire resource pool, reducing power consumption while maintaining reliable resource selection through structured organization of sensing targets.
Solution Approach 2:
The invention changes the parameter of sensing scope from complete sensing to partial sensing by selecting specific resource pools based on periodicity. This parameter change reduces the number of resources that need to be sensed, thereby reducing power consumption while maintaining adequate reliability through selective monitoring of critical resource pools.
2Device complexity
If partial sensing is configured to reduce monitoring overhead, then device complexity is reduced, but the procedure for reevaluation or preemption check becomes unclear
Solution Approach 1:
The resource pool is divided into multiple resource pools according to periodicity values, creating a structured segmentation that simplifies monitoring operations. Each resource pool can be independently managed and sensed, making the reevaluation and preemption check procedures clearer and more manageable while reducing overall monitoring complexity.
Solution Approach 2:
The resource pools are pre-configured and identified based on periodicity values before the actual sensing and resource selection process. This preliminary organization of resource pools provides a clear framework for subsequent reevaluation and preemption checks, making the operation procedure more transparent and easier to execute.
3Productivity
If autonomous resource selection is implemented in D2D communication, then communication efficiency is improved, but resource selection accuracy becomes uncertain without clear sensing procedures
Solution Approach 1:
The invention changes the approach from complete sensing to partial sensing by utilizing periodicity-based resource pool selection. This parameter change enables autonomous resource selection to proceed efficiently with reduced sensing overhead, while the structured periodicity-based organization maintains adequate selection accuracy by focusing sensing efforts on relevant resource pools.
Solution Approach 2:
Instead of performing complete sensing on all resources, the invention applies partial sensing on selected resource pools based on periodicity. This partial action approach maintains sufficient resource selection accuracy for autonomous operation while significantly improving communication efficiency by reducing the sensing burden.
Data Source
AI summary
A terminal includes: a reception unit configured to receive a signal from another terminal in a resource pool for which a partial sensing is configured; a control unit configured to determine a first resource of a sensing target, and determine an available resource set by identifying candidate resources based on a sensing result of the first resource according to the reception unit; and a transmission unit configured to select a second resource used for transmission from the resource set, and transmit a signal using the second resource. The control unit determines a procedure of performing reevaluation or preemption check, based on whether the second resource is a resource reserved by periodic reservation.