PSSCH Resource Selection Using Partial Sensing in Sidelink Subframes

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing wireless communication systems face challenges in efficiently selecting resources for transmitting physical sidelink shared channels (PSSCH) due to the overhead and power consumption associated with comprehensive sensing, particularly in device-to-device (D2D) and vehicle-to-everything (V2X) communications.

Innovation Solution

A method and apparatus for a user equipment (UE) to perform partial sensing within a sensing window, selecting m subframes from n subframes for PSSCH transmission based on higher layer signaling, allowing for efficient resource selection and reduced battery consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If comprehensive sensing is performed for resource selection, then resource selection reliability is improved, but power consumption increases

Engineering Contradiction:

Improveresource selection reliabilityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent applies partial sensing by performing sensing operations on only a subset of subframes (m subframes) within the complete sensing window (n subframes), rather than comprehensively sensing all subframes. This partial action maintains adequate resource selection reliability while significantly reducing the power consumption associated with continuous full-window sensing operations.

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The sensing window is segmented into multiple subframes, and the patent selectively performs sensing on specific segments (m subframes) rather than the entire window. This segmentation allows the system to distribute sensing operations across different time intervals, reducing peak power consumption while maintaining overall detection accuracy for resource selection.

Inventive Principle:

Principle #1Segmentation

2Measurement precision

If comprehensive sensing is performed for resource selection, then resource selection accuracy is improved, but network overhead increases

Engineering Contradiction:

Improveresource selection accuracyVSAvoidnetwork overhead

Core Design Contradiction:

Measurement precisionVSQuantity of substance

Solution Approach 1:

The patent performs partial sensing on m subframes out of n total subframes in the sensing window. This partial measurement approach maintains sufficient resource selection accuracy by monitoring critical subframes while reducing the overall measurement burden and associated network overhead for resource allocation and coordination.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS12538350B2Method and apparatus for selecting resource and transmitting PSSCH in wireless communication system

Publication Date: 2026.01.27 LG ELECTRONICS INC

AI summary

One embodiment of the present invention is a method for user equipment transmitting a physical sidelink shared channel (PSSCH) in a wireless communication system, the method for transmitting a PSSCH comprising the steps of: performing sensing on an m number of subframes indicated by upper layer signaling from among an n number of subframes in a sensing window; repeating sensing of the m number of subframes at an interval of the n number of subframes within the sensing window; selecting, as a transmission resource, the m number of subframes from among the n number of subframes within a selection window, on the basis of the result of sensing the m number of subframes; and transmitting the PSSCH through the m number of subframes selected as the transmission resource.