PC5 Sidelink Resource Configuration for Control-Node Uplink Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing mobile communications systems lack a solution for obtaining uplink resources to transmit sidelink information to a control node during sidelink services based on the PC5 interface.
Innovation Solution
A resource configuration method and information transmission method are provided, where a control node configures resources for terminals to transmit sidelink information, including HARQ-ACK and CSI, using PUCCH/PUSCH for uplink and PSFCH/PSSCH for sidelink, with flexible resource allocation and multiplexing to enhance resource utilization and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sidelink services are performed based on PC5 interface, then direct data transmission between user equipments is enabled, but there is no solution for obtaining uplink resources to transmit sidelink information to control node
Solution Approach 1:
The patent applies universality by enabling the uplink interface to serve dual purposes: traditional uplink communication with the control node and sidelink information transmission. The terminal device can transmit both uplink data and sidelink information (such as HARQ-ACK and CSI) using the same uplink resources configured by the control node, eliminating the need for separate resource allocation mechanisms.
2Reliability
If separate resources are allocated for sidelink information transmission, then transmission reliability is improved, but resource utilization efficiency deteriorates due to resource waste
Solution Approach 1:
The patent merges sidelink information transmission with uplink transmission by allowing the terminal device to multiplex sidelink information (HARQ-ACK, CSI) with uplink data or control information on the same physical channels (PUCCH, PUSCH). This combining approach ensures reliable transmission through proper channel selection while maximizing resource utilization by avoiding dedicated sidelink feedback resources.
3Productivity
If flexible resource allocation is implemented, then resource utilization efficiency is improved, but device complexity increases due to multiplexing requirements
Solution Approach 1:
The patent implements dynamic resource allocation where the control node flexibly configures uplink resources based on actual sidelink transmission needs. The terminal device dynamically determines whether to transmit sidelink information on PUCCH or PUSCH based on the presence of uplink data and control information, allowing efficient resource usage while keeping device complexity manageable through clear prioritization rules.
Data Source
AI summary
A resource configuration method, an information transmission method, and a related device are provided. The method includes: configuring, for a first terminal, a resource for transmitting target sidelink information, where the target sidelink information includes at least one of first sidelink information and second sidelink information, the first sidelink information is sidelink information corresponding to a sidelink transmission between the first terminal and a second terminal, and the second sidelink information is sidelink information corresponding to a sidelink transmission between the first terminal and the control node.