UE Sidelink Feedback Allocation Across Time And Frequency Resources
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge in wireless communication systems, particularly in 5G, is to efficiently manage resource allocation for sidelink feedback channels to minimize half-duplex issues and ensure reliable, low-latency communication for diverse use cases such as vehicle-to-everything (V2X) scenarios, including vehicle platooning, advanced driving, extended sensors, and remote driving.
Innovation Solution
A method for determining the resource allocation of physical sidelink feedback channels (PSFCH) for physical sidelink shared channels (PSSCH) is introduced, allowing transmissions in different slots and frequency resources, with feedback channels transmitted in different frequency resources of the same time resource area, minimizing half-duplex problems among user equipments (UEs).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If feedback channels are transmitted in the same time resource area using the same frequency resources, then resource allocation is simplified, but half-duplex issues arise causing communication conflicts
Solution Approach 1:
The patent introduces frequency domain as an additional dimension for resource allocation. Instead of only using time resources for feedback channel transmission, the system now utilizes both time and frequency dimensions, allowing multiple UEs to transmit feedback simultaneously without half-duplex conflicts by assigning different frequency resources to different feedback channels.
2Reliability
If feedback channels are transmitted in different frequency resources, then half-duplex issues are minimized, but resource allocation complexity increases
Solution Approach 1:
The patent segments the frequency spectrum into multiple frequency resources, with each frequency resource dedicated to specific feedback channel transmissions. This segmentation allows the system to manage multiple feedback channels simultaneously without interference, reducing half-duplex issues while maintaining organized resource allocation through systematic frequency division.
Data Source
AI summary
An embodiment provides an operation method of a sidelink reception terminal in a wireless communication system, the method comprising the steps of: receiving a first physical sidelink shared channel (PSSCH) and a second PSSCH by a sidelink reception terminal; and transmitting feedbacks for the first PSSCH and the second PSSCH through a first physical sidelink feedback channel (PSFCH) resource and a second PSFCH resource, respectively, by the sidelink reception terminal, wherein the first PSSCH and the second PSSCH are received in different slots, and a first PSFCH related to the first PSSCH and a second PSFCH related to the second PSSCH are transmitted through different frequency resources within an identical time resource area.