V2X Subchannel SNR Prioritization for Reliable PSSCH Allocation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In V2X communication, the random selection of frequency domain resources for physical sidelink shared channels (PSSCH) in areas without signal coverage leads to degraded transmission reliability due to varying channel properties among subcarriers.
Innovation Solution
A method and device for allocating frequency domain resources by calculating the signal-to-noise ratio (SNR) of each subchannel, determining priority based on SNR, and selecting the subchannel with the highest priority for PSSCH, utilizing an equivalent SNR function to map SINR of subcarriers to SNR.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If frequency domain resources are randomly selected from a pre-configured resource pool in areas without signal coverage, then V2X terminals can communicate without base station scheduling, but transmission reliability is degraded due to varying channel properties among subcarriers
Solution Approach 1:
The patent applies local quality by evaluating and selecting subchannels based on their individual SNR characteristics rather than treating all subchannels uniformly. Each subchannel is assessed for its specific channel quality, and the terminal selects subchannels with higher SNR values, thereby adapting the resource selection to local channel conditions and improving transmission reliability while maintaining autonomous operation capability
2Reliability
If SNR calculation and priority determination for each subchannel is implemented, then optimal frequency domain resources can be allocated to improve transmission reliability, but device complexity and computational overhead increase
Solution Approach 1:
The patent changes the parameter used for resource selection from random selection to SNR-based selection. By calculating SNR for each subchannel and using this parameter to determine selection priority, the system transforms the resource allocation process into a parameter-driven decision-making process that improves reliability while keeping the computational complexity manageable through focused SNR measurements on candidate subchannels
Data Source
AI summary
The present application discloses a frequency domain resource allocation method, device and storage medium. The frequency domain resource allocation method is applied to a Vehicle-to-X (V2X) terminal and includes obtaining a pre-configured resource pool, which comprises a plurality of subchannels; calculating a signal-to-noise ratio (SNR) of each subchannel in the resource pool; determining priority of each subchannel in the resource pool according to the SNR; and selecting the subchannel with a highest priority from the resource pool as a frequency domain resource for physical sidelink shared channel (PSSCH).