Uplink Grant Selection for Reducing Padding in 5G
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In mobile communications, particularly under 3GPP 5G NR specifications, the variation in media frame sizes results in significant padding bits during uplink transmissions, leading to higher power consumption and waste of resources, especially in applications like extended reality (XR) and cloud gaming.
Innovation Solution
Implementing schemes that allow user equipment (UE) to select and indicate a configured grant (CG) or dynamic grant (DG) from multiple overlapping grants, using mechanisms such as signaling MAC control elements, uplink control information, or scheduling requests, to optimize UL transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If configured grants or dynamic grants are used for transmitting media frames with variable sizes, then uplink transmission capability is improved, but padding bits increase significantly leading to higher power consumption and resource waste
Solution Approach 1:
The patent changes the parameter of grant configuration by introducing multiple overlapping configured grants with different transport block sizes. The network configures a set of CGs where each CG is associated with a specific TB size, allowing the UE to select the most appropriate CG based on the actual media frame size, thereby minimizing padding bits and reducing power consumption while maintaining uplink transmission capability
Solution Approach 2:
The patent segments the uplink transmission resources into multiple overlapping configured grants, each optimized for specific transport block sizes. By dividing the grant resources into specialized segments (CG0 for small TB, CG1 for medium TB, CG2 for large TB), the system enables precise matching between grant configuration and actual data size, reducing the need for excessive padding bits and associated power consumption
2Adaptability or versatility
If configured grants or dynamic grants are used for transmitting media frames with variable sizes, then uplink transmission capability is improved, but padding bits increase significantly leading to waste of uplink resources
Solution Approach 1:
The patent changes the parameter of grant configuration by introducing multiple overlapping configured grants with different transport block sizes. The network configures a set of CGs where each CG is associated with a specific TB size, allowing the UE to select the most appropriate CG based on the actual media frame size, thereby minimizing padding bits and reducing power consumption while maintaining uplink transmission capability
Solution Approach 2:
The patent segments the uplink transmission resources into multiple overlapping configured grants, each optimized for specific transport block sizes. By dividing the grant resources into specialized segments (CG0 for small TB, CG1 for medium TB, CG2 for large TB), the system enables precise matching between grant configuration and actual data size, reducing the need for excessive padding bits and associated power consumption
Data Source
AI summary
Techniques and solutions pertaining to reducing padding in uplink (UL) transmissions in mobile communications are described. An apparatus (e.g., user equipment (UE)) receives, from a network, a configuration of multiple overlapping configured grants (CGs) or multiple overlapping dynamic grants (DGs). The apparatus selects a CG or DG from the multiple overlapping CGs or DGs to perform transmission in the selected CG or DG. The apparatus then indicates the selected CG or DG to the network.