Configured Grant-UCI for Dynamic Uplink Parameter Selection
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Solution Overview
Problem
Existing configured grant (CG) transmissions in wireless communication networks are inefficient in resource utilization as UEs are limited to using specific CG resources and transmission parameters, which can lead to suboptimal performance and increased latency in shared spectrum environments.
Innovation Solution
User Equipment (UE) determines and dynamically indicates transmission parameters using Configured Grant-Uplink Control Information (CG-UCI) for CG resources, allowing flexible selection of resources and parameters based on current conditions, enabling efficient resource utilization and reduced latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the UE is restricted to specific CG resources and transmission parameters as configured by the BS, then the system maintains simple resource management and configuration control, but resource utilization efficiency deteriorates and transmission flexibility is limited
Solution Approach 1:
The patent implements dynamic transmission parameter indication where the UE determines transmission parameters (such as modulation and coding scheme, precoding matrix indicator, and rank indicator) based on real-time channel conditions and reports them via CG-UCI. This transforms the static configured grant mechanism into a dynamic system that adapts to changing channel conditions, thereby improving resource utilization efficiency while maintaining manageable complexity through standardized reporting procedures
Solution Approach 2:
The patent enables the UE to change transmission parameters dynamically by selecting from multiple configured parameter sets and indicating the chosen parameters through CG-UCI. The UE can adjust modulation order, coding rate, precoding matrix, and transmission rank based on current channel quality, allowing the system to optimize resource utilization without requiring complex real-time reconfiguration of the CG resources themselves
2Adaptability or versatility
If the UE uses fixed transmission parameters as configured by the BS, then the configuration and control process remains simple, but adaptability to real-time conditions deteriorates
Solution Approach 1:
The patent introduces dynamic parameter selection where the UE adapts transmission parameters based on real-time channel conditions. The UE monitors channel quality and selects appropriate parameters from pre-configured sets, then reports the selection via CG-UCI. This dynamic adaptation mechanism enables the system to respond to changing conditions while maintaining operational simplicity through the use of pre-configured parameter sets and standardized reporting formats
Solution Approach 2:
The patent implements a feedback mechanism where the UE reports selected transmission parameters to the BS via CG-UCI. This feedback loop allows the BS to maintain awareness of the UE's transmission parameters without requiring complex real-time control signaling. The feedback mechanism enables adaptability while keeping the control process simple and standardized
3Reliability
If the UE transmits data without dynamic parameter indication, then the transmission process is straightforward and fast, but data reception and decoding performance deteriorates due to inability to adapt to channel conditions
Solution Approach 1:
The patent employs preliminary configuration of multiple transmission parameter sets by the BS before actual data transmission. The UE selects from these pre-configured sets based on channel conditions and reports the selection via CG-UCI along with the data. This preliminary configuration approach enables rapid parameter adaptation without requiring time-consuming real-time negotiation, thus improving reception performance while minimizing transmission delay
Solution Approach 2:
The patent enables the UE to autonomously determine and select appropriate transmission parameters based on its own channel condition assessments. The UE performs self-evaluation of channel quality and independently selects the most suitable parameter set from pre-configured options, then reports the selection via CG-UCI. This self-service mechanism improves reliability by ensuring parameters match actual conditions while avoiding the time loss associated with BS-directed parameter negotiation
Data Source
AI summary
Wireless communication systems and methods related to dynamic indications of uplink transmission parameters via configured grant-UCI (CG-UCI) are provided. A user equipment (UE) receives, from a base station (BS), a first configuration indicating a first configured grant (CG) resource and a first transmission parameter associated with the first CG resource. The UE determines a second transmission parameter for transmitting a data block in the first CG resource. The second transmission parameter is different from the first transmission parameter. The UE transmits, to the BS in the first CG resource, a transmission including the data block and configured grant-uplink control information (CG-UCI) indicating the second transmission parameter, where the data block is transmitted based on the second transmission parameter.