Sidelink Feedback Timing for Consolidated Uplink Reporting
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Solution Overview
Problem
The challenge in existing communication systems is the inefficient use of transmission resources for reporting Sidelink (SL) feedback information, particularly in Vehicle to Everything (V2X) systems, which affects spectral efficiency and increases transmission delay.
Innovation Solution
A method is introduced to determine a time interval set between an SL feedback channel and an Uplink (UL) transmission channel, allowing for the consolidation of multiple pieces of SL feedback information onto a single UL transmission channel, such as a PUCCH or PUSCH, by aligning the slots for both channels using a time interval set provided by the network or pre-configured in the terminal device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If SL feedback information is reported using separate UL transmission channels for each feedback message, then the feedback information can be transmitted reliably, but the transmission resources are wasted and spectral efficiency is reduced
Solution Approach 1:
The patent combines multiple SL feedback information messages into a single UL transmission channel (PUCCH or PUSCH) by determining a unified time interval from a time interval set. This merging approach allows multiple feedback reports to be transmitted together, reducing the number of separate transmissions needed and improving spectral efficiency while maintaining reliable feedback delivery.
2Productivity
If multiple SL feedback information messages are consolidated into a single UL transmission channel, then transmission resources are reduced and spectral efficiency is improved, but the complexity of determining the correct time interval increases
Solution Approach 1:
The patent pre-configures a time interval set containing multiple candidate time intervals between the SL feedback channel and UL transmission channel. This preliminary preparation allows the terminal device to quickly select an appropriate time interval from the pre-defined set, reducing the computational complexity of real-time determination while enabling efficient consolidation of feedback information.
3Ease of operation
If a fixed time interval is used between SL feedback channel and UL transmission channel, then the system operation is simple, but it cannot adapt to different feedback information requirements and transmission conditions
Solution Approach 1:
The patent introduces a dynamic time interval selection mechanism where the terminal device chooses from multiple candidate time intervals in a pre-configured set. This dynamic approach allows the system to adapt to different feedback information requirements and transmission conditions by selecting the most appropriate time interval, while still maintaining operational simplicity through the use of pre-defined options.
Data Source
AI summary
A Sidelink (SL) feedback information processing method includes that: a terminal device acquires a time interval set, an element in the time interval set being used to determine a time interval between an SL feedback channel and an Uplink (UL) transmission channel, and the UL transmission channel being used to carry SL feedback information reported by the terminal device to a network device; and The terminal device acquires, according to a slot for the UL transmission channel and the time interval set, the SL feedback information carried by the UL transmission channel.