Sidelink Resource Selection Using CQI-Aware Probabilities
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing resource allocation methods for NR V2X sidelink communications do not adequately consider channel conditions, leading to inefficiencies in link adaptation and power control, particularly in unicast and groupcast scenarios.
Innovation Solution
A method for resource selection in NR V2X sidelink communications that incorporates channel quality information (CQI) to determine resource probabilities, adjusting selection probabilities based on CQI and sensing information to enhance resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If random resource selection is used, then resource allocation simplicity is maintained, but resource allocation efficiency deteriorates when link adaptation or power control is being used
Solution Approach 1:
The patent changes the selection parameter from uniform random selection to probability-based selection where resources are chosen according to their channel quality. The selection probability is modified by multiplying the base probability with a channel quality factor, transforming the resource selection mechanism from simple random to quality-aware probabilistic selection.
2Device complexity
If simple random selection of available resources is used, then device complexity is reduced, but communication reliability deteriorates
Solution Approach 1:
The patent incorporates channel quality feedback into the resource selection process. The transmitting device uses channel quality information (CQI) about each available resource to adjust selection probabilities, favoring resources with better channel conditions. This feedback mechanism ensures that transmissions are more likely to occur on reliable channels, improving overall communication reliability.
3Productivity
If channel quality information is incorporated into resource selection, then resource allocation efficiency is improved, but device complexity increases
Solution Approach 1:
The patent performs preliminary channel quality measurement and evaluation before the actual resource selection process. The transmitting device measures or obtains channel quality information for all candidate resources in advance, then uses this pre-computed information to adjust selection probabilities. This preliminary action separates the complex measurement task from the selection task, making the overall process more manageable.
Data Source
Figure 1~2
Figure 3~7
Figure 4
AI summary
A method includes performing sensing to determine resources for a sidelink transmission between a first device and a second device; obtaining channel information associated with a first subset of the resources; generating resource selection probabilities for a second subset of the resources, the resource selection probabilities being generated in accordance with the channel information and sensing information derived from the sensing; selecting a resource from the resources in accordance with the resource selection probabilities, the resource being used for the sidelink transmission; and transmitting, to the second device, the sidelink transmission over the selected resource.