PSFCH Resource Mapping for Multi-Carrier NR Sidelink Feedback
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Solution Overview
Problem
In New Radio (NR) Sidelink systems, determining transmission resources for sidelink feedback channels (PSFCH) for multiple carriers is challenging, affecting the reliability of data transmission.
Innovation Solution
A method for a terminal device to determine a target carrier and transmission resource for sidelink feedback channels in a consistent manner, ensuring reliable transmission by aligning the understanding between transmitting and receiving terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a terminal device transmits both data and HARQ-ACK information simultaneously on the PSCCH and PSFCH, then communication efficiency is improved, but the processing complexity and resource management difficulty increase
Solution Approach 1:
The patent segments the feedback information into two distinct parts: HARQ-ACK information transmitted on PSCCH and CSI information transmitted on PSFCH. This segmentation allows the terminal to handle different types of feedback separately, reducing processing complexity while maintaining overall communication efficiency. The base station also processes these separately, simplifying resource management.
Solution Approach 2:
The patent implements preliminary action by having the terminal pre-configure multiple PSFCH resources before actual transmission. The base station indicates which specific resource to use through DCI signaling. This preparation in advance simplifies the real-time processing during actual feedback transmission, resolving the complexity issue while maintaining efficiency.
2Adaptability or versatility
If multiple PSFCH resources are configured for different terminal groups, then resource allocation flexibility is improved, but resource management complexity increases
Solution Approach 1:
The patent applies local quality by assigning different PSFCH resources to different terminal groups based on their specific characteristics and channel conditions. Each group receives customized resource allocation optimized for its needs. The base station manages this through group-specific configuration, reducing overall management complexity while maintaining flexibility for each group.
Solution Approach 2:
The patent creates a universal resource allocation framework where a single PSFCH resource configuration can serve multiple terminal groups with different requirements. The base station uses a unified signaling mechanism (DCI) to indicate resource selection across different groups, simplifying management while maintaining adaptability through the multi-group support.
Data Source
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AI summary
A Physical Sidelink Feedback Channel (PSFCH) transmission method and a terminal device, capable of achieving reliable transmission of a sidelink feedback channel corresponding to multi-carrier transmission. The method includes: receiving, by a first terminal, Physical Sidelink Shared Channel(s) (PSSCH(s)) transmitted by a second terminal on a plurality of carriers; determining, by the first terminal, to transmit a first PSFCH to the second terminal on a first carrier, the first PSFCH including feedback information for a first PSSCH, and the first PSSCH including at least one PSSCH transmitted on at least one of the plurality of carriers; determining, by the first terminal, a target transmission resource for transmitting the first PSFCH on the first carrier; and transmitting, by the first terminal, a first PSFCH on the target transmission resource on the first carrier.