Configured Grant PUSCH Scheduling to Reduce Uplink Resource Waste
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Solution Overview
Problem
Resource waste occurs in 5G communication systems due to underutilized configured grant (CG) physical uplink shared channels (PUSCH) resources, leading to inefficient system resource utilization, particularly in high real-time multimedia services like video transmission and cloud gaming.
Innovation Solution
Configuring CG PUSCH resources in a periodicity with a monotonically non-increasing trend in both time and frequency domains, ensuring that later CG PUSCHs have smaller resource sizes than earlier ones, thereby reducing waste and improving resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If CG PUSCH resources are configured with fixed size in each periodicity, then the terminal device can perform uplink transmission reliably, but resource waste occurs when the terminal device does not use all configured resources
Solution Approach 1:
The patent applies dynamics by making the CG PUSCH resource size variable rather than fixed. The network device dynamically adjusts the resource size of later CG PUSCHs to be smaller than earlier ones, allowing the system to adapt to different transmission needs and reduce resource waste when terminals don't use all configured resources.
Solution Approach 2:
The patent changes the parameter of CG PUSCH resource size from a fixed value to a variable value that decreases across different periodicities. This parameter change allows the system to optimize resource allocation by reducing the size of later CG PUSCHs, thereby minimizing resource waste while maintaining transmission reliability.
2Device complexity
If multiple CG PUSCHs are configured in a periodicity with equal resource sizes, then system resource allocation is simple, but system resource utilization is low when terminals underutilize the resources
Solution Approach 1:
The patent changes the resource size parameter across different CG PUSCHs in a periodicity, making later CG PUSCHs smaller than earlier ones. This parameter change optimizes system resource utilization by matching the actual transmission needs of terminals, thereby reducing waste while maintaining manageable allocation complexity.
Data Source
AI summary
A method includes: receiving first configuration information, where the first configuration information is used to configure M CG PUSCHs in a first CG periodicity; and sending data on N CG PUSCHs, where the M CG PUSCHs include a first CG PUSCH and a second CG PUSCH, the first CG PUSCH precedes the second CG PUSCH in time, a time domain resource size of the second CG PUSCH is smaller than a time domain resource size of the first CG PUSCH, M is an integer greater than or equal to 2, and N is a positive integer less than or equal to M.