Wireless Communication Device Configured Grant Priority Handling
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Solution Overview
Problem
In New Radio (NR) systems, ensuring the transmission of services with higher priorities is challenging due to overlapping resource grants, which can lead to conflicts and inefficiencies in data transmission.
Innovation Solution
The implementation of a wireless communication method that prioritizes data transmission using a configured resource grant over a dynamic scheduling resource grant when an overlapping section is detected, ensuring high-priority services are transmitted efficiently by flipping the New Data Indication (NDI) and utilizing the configured grant timer, even if a lower-priority service's grant timer is running.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If dynamic scheduling resource grant is used for data transmission, then resource utilization efficiency is improved, but transmission reliability of high-priority services deteriorates when overlapping with configured resource grant
Solution Approach 1:
The patent changes the parameter of grant priority by introducing a configured grant timer and NDI flipping mechanism. When a configured grant timer is running, the system prioritizes the configured resource grant over dynamic scheduling grant by flipping the NDI, thereby ensuring high-priority service transmission reliability while maintaining dynamic resource allocation efficiency
Solution Approach 2:
The patent introduces dynamic priority adjustment through the configured grant timer and NDI flipping mechanism. The system dynamically switches between dynamic scheduling mode and configured grant mode based on the timer state and service priority, allowing flexible adaptation to different transmission scenarios while resolving the contradiction between resource efficiency and reliability
2Reliability
If configured resource grant is prioritized over dynamic scheduling resource grant, then transmission reliability of high-priority services is improved, but resource allocation flexibility deteriorates
Solution Approach 1:
The patent implements dynamic resource allocation by introducing a configured grant timer that automatically expires after a predetermined period. This timer mechanism allows the system to switch between prioritizing configured grants (for reliability) and dynamic scheduling grants (for flexibility), thereby resolving the contradiction between transmission reliability and resource allocation flexibility through time-based dynamic adjustment
3Productivity
If overlapping resource grants are resolved by using dynamic scheduling grant, then resource allocation efficiency is improved, but service priority handling deteriorates
Solution Approach 1:
The patent changes the priority parameter by introducing NDI flipping when a configured grant timer is running. This parameter change ensures that when high-priority services need transmission, the system automatically prioritizes the configured resource grant over dynamic scheduling grant, thereby resolving the contradiction between resource allocation efficiency and service priority handling
Solution Approach 2:
The configured grant timer acts as an intermediary mechanism that mediates between dynamic scheduling grants and configured resource grants. When the timer is running, it mediates in favor of configured grants for high-priority services; when expired, it allows dynamic scheduling to take precedence, thus resolving the contradiction through intermediate time-based control
Data Source
AI summary
The implementations of the present disclosure relate to a wireless communication method and a communication device. The method comprises: if a first resource grant and a second resource grant have an overlapping portion, using the second resource grant in the overlapping portion to send or receive data, wherein the first resource grant is a dynamically scheduled resource grant, and the second resource grant is a configured resource grant.