NR D2D Sidelink Partial Sensing for Resource Selection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing technologies lack a detailed solution for resource allocation in device-to-device (D2D) communication, particularly in the New Radio (NR) system, which is essential for supporting various Vehicle-to-Everything (V2X) services requiring efficient resource sensing and selection.
Innovation Solution
A partial sensing method and device for D2D communication in a wireless communication system, involving the reception of sidelink control information, determining exclusion candidates, and excluding overlapping resources from the sensing procedure to efficiently allocate resources for sidelink data transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If full sensing method is used for resource selection in D2D communication, then resource allocation reliability is improved, but device complexity and energy consumption increase
Solution Approach 1:
The patent segments the sensing procedure by dividing resources into two categories: resources to be sensed and resources to be excluded from sensing. This segmentation allows the UE to focus sensing efforts only on relevant resources while excluding others, thereby reducing complexity while maintaining allocation reliability through targeted sensing of critical resources.
Solution Approach 2:
The patent implements partial sensing by selectively sensing only a subset of available resources rather than performing full sensing on all resources. This partial action approach reduces device complexity and energy consumption while maintaining sufficient reliability for resource allocation by focusing sensing on the most critical resources.
2Measurement precision
If full sensing of all resources is performed, then resource selection accuracy is improved, but time consumption and energy usage increase
Solution Approach 1:
The patent segments the resource space into sensed resources and excluded resources, allowing the UE to perform measurements only on the segmented subset that is most relevant for resource selection. This reduces sensing time while maintaining selection accuracy for the critical resources.
Solution Approach 2:
The patent applies partial sensing by performing measurements on only a partial set of resources rather than all resources. This partial action reduces the time and energy required for sensing while maintaining sufficient accuracy for making reliable resource selection decisions.
3Object-affected harmful factors
If comprehensive resource sensing is conducted, then interference avoidance is improved, but processing complexity increases
Solution Approach 1:
The patent segments resources into those requiring sensing for interference detection and those to be excluded. This segmentation enables the UE to focus processing efforts on identifying and avoiding interference on critical resources while reducing overall processing complexity by excluding less critical resources from the sensing process.
Data Source
AI summary
A method of performing sensing for device-to-device (D2D) communication in a wireless communication system may include receiving, by a first user equipment (UE), sidelink control information (SCI) in slot m; determining a first exclusion candidate based on a reception power measurement value of a data channel corresponding to the SCI; determining slot m+Gap in which the same data as in the slot m is transmitted; determining a second exclusion candidate based on the slot m+Gap; excluding a resource in which the first and second exclusion candidates and a candidate to be sensed overlap from a resource to be sensed; and performing sensing on the resource to be sensed.