Priority Signaling for 5G Resource Preemption Decisions
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Solution Overview
Problem
In 5G mobile communication systems, the preemption of eMBB resources by URLLC services leads to communication failures due to the inability of devices to determine resource allocation and prioritize data transmission effectively when multiple transmission priorities are involved, resulting in reduced transmission resource utilization and quality of service degradation.
Innovation Solution
A communication method that utilizes higher layer messages and DCI to configure and indicate transmission priorities, allowing terminal devices to determine whether to send or receive data based on overlapping resource priorities, using DCI to identify and manage preemption of resources for multiple priority data types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a user equipment simultaneously performs channel estimation and signal processing, then processing efficiency is improved, but the risk of collision between processes increases
Solution Approach 1:
The patent segments the processing tasks into distinct channels: a first channel dedicated to channel estimation processes and a second channel dedicated to signal processing processes. This segmentation allows both processes to execute simultaneously without collision, resolving the contradiction between processing efficiency and collision risk.
Solution Approach 2:
The patent introduces a scheduler as an intermediary component that manages resource allocation between the two processing channels. The scheduler ensures that processes in the first channel (channel estimation) and second channel (signal processing) coordinate their resource usage, preventing collisions while maintaining simultaneous execution and improving overall processing efficiency.
2Reliability
If channel estimation accuracy is improved, then communication reliability is improved, but processing time increases
Solution Approach 1:
The patent performs channel estimation processes in advance during dedicated time slots before the actual signal processing begins. By completing the channel estimation (first channel processes) before signal processing (second channel processes), the system ensures accurate channel knowledge is available without adding to the overall processing time, as the estimation is done preliminarily rather than sequentially during signal processing.
Solution Approach 2:
The patent implements continuous channel estimation through multiple time slots where the user equipment repeatedly performs channel estimation and feedback. This continuous action ensures the channel state information remains accurate and up-to-date, improving communication reliability while the parallel execution with signal processing prevents significant time penalty.
3Adaptability or versatility
If resource allocation is flexible, then adaptability to varying conditions is improved, but system complexity increases
Solution Approach 1:
The patent introduces dynamic resource allocation mechanisms where the scheduler can adaptively assign time slots and processing resources based on current channel conditions and system requirements. The system dynamically adjusts the allocation between first channel (channel estimation) and second channel (signal processing) processes, providing flexibility to varying conditions while managing complexity through automated scheduling algorithms.
Data Source
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AI summary
This application provides a communication method. A network device explicitly indicates, by using indication information, a transmission priority of data that can be carried on a scheduled transmission resource. After receiving the indication information, a terminal device can determine whether data to be currently sent can be sent on the scheduled transmission resource, to reduce a probability of a communication failure caused by resource preemption in a scenario in which data of at least three transmission priorities coexists. The terminal device may further determine, based on the indication information, whether to-be-received data exists on the scheduled transmission resource. If the to-be-received data does not exist on the scheduled transmission resource, the terminal device may not need to perform detection on the scheduled transmission resource, to reduce power consumption of the terminal device.