Downlink Control Information Scheduling Before Physical Uplink Resources
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently scheduling downlink control information (DCI) to manage overlapping high and low priority physical uplink channel resources, leading to potential collisions and inefficiencies in resource utilization.
Innovation Solution
The proposed solution involves scheduling multiple DCI messages to arrive at least a specified time duration earlier than the start of the earliest physical uplink channel resources, ensuring that these messages are transmitted or received on high priority channels, even when they overlap with low priority resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple DCI messages are scheduled to arrive earlier than physical uplink channel resources, then resource collision is prevented and scheduling efficiency is improved, but system complexity and scheduling overhead increase
Solution Approach 1:
The patent applies preliminary action by scheduling DCI messages to arrive at least a specified time duration earlier than the start of the earliest physical uplink channel resources. This advance scheduling allows the UE to process DCI messages before the uplink transmission begins, preventing resource collisions and enabling efficient handling of multiple priority levels without last-minute conflicts.
Solution Approach 2:
The patent segments the scheduling process by introducing a time duration parameter that divides the timeline into distinct phases: DCI arrival phase and uplink transmission phase. This segmentation creates clear boundaries that simplify resource management and allow independent optimization of control information delivery and data transmission.
2Reliability
If DCI messages are transmitted on high priority channels even when overlapping with low priority resources, then high priority communication reliability is improved, but resource utilization efficiency deteriorates
Solution Approach 1:
The patent applies local quality by assigning different priority levels to different DCI messages and their corresponding physical uplink channel resources. High priority DCI messages are guaranteed transmission on high priority channels with temporal separation, while low priority messages can utilize overlapping resources. This localized quality differentiation ensures reliable high priority communication while maintaining overall resource utilization efficiency.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network entity may schedule multiple downlink control information (DCI) messages, which schedule multiple uplink messages to be transmitted by a user equipment (UE) on physical uplink channel resources, such that each of the multiple DCI messages arrive at least a specified time duration earlier than a start of an earliest of the physical uplink channel resources. The network entity may transmit the multiple DCI messages as scheduled. The UE may prepare to receive the DCI messages as scheduled. Numerous other aspects are described.