Wireless Communication: Multi-Carrier Sidelink Feedback to Reduce Overhead
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Solution Overview
Problem
In the Internet of Vehicles system, which uses multi-carrier sidelink transmission for improved throughput and reliability, there is an urgent need to effectively implement sidelink feedback to enhance transmission reliability.
Innovation Solution
A wireless communication method and terminal device that enable sidelink feedback on multiple carriers by receiving N sidelink data channels on N frequency domain resources and sending sidelink feedback information on M frequency domain resources, where M is less than or equal to N.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sidelink feedback information for N sidelink data channels is transmitted on N separate frequency domain resources, then the feedback information can be transmitted without loss, but the overhead of sidelink feedback increases
Solution Approach 1:
The patent combines feedback information from multiple sidelink data channels (N channels) into a reduced set of frequency domain resources (M resources, where M < N). This merging approach reduces feedback overhead while maintaining essential feedback functionality through resource aggregation and selective feedback transmission.
2Productivity
If multiple carriers are used for sidelink transmission, then the throughput and reliability of the system improve, but the complexity of implementing sidelink feedback increases
Solution Approach 1:
The patent segments the feedback transmission by dividing N frequency domain resources into M smaller resource sets. This segmentation reduces the complexity of handling feedback across multiple carriers by organizing feedback resources in a more manageable structure that maintains the benefits of multi-carrier transmission.
Solution Approach 2:
The patent creates a universal feedback mechanism that works across multiple carriers by establishing a standardized method for mapping N data channel feedbacks to M common frequency domain resources. This multi-functional approach allows the same feedback procedure to be applied regardless of the number of carriers involved.
3Quantity of substance
If M frequency domain resources are selected from N frequency domain resources for feedback transmission, then the feedback overhead is reduced, but the measurement precision of feedback information may be affected
Solution Approach 1:
The patent applies local quality by selecting specific frequency domain resources (M out of N) that are most suitable for feedback transmission. This selective approach ensures that feedback information is transmitted on resources with optimal characteristics, maintaining precision while reducing overall resource usage.
Data Source
AI summary
A wireless communication method and a terminal device. The method comprises: a first terminal receiving, on N frequency domain resources, N sidelink data channels sent by a second terminal, wherein the N frequency domain resources correspond one-to-one to the N sidelink data channels, N is an integer greater than 1, and the frequency domain resources are carriers or bandwidth parts (BWP); and the first terminal sending, on M frequency domain resources, sidelink feedback information of the N sidelink data channels to the second terminal, where M is a positive integer, and M≤N.