Uplink Shared Channel Configuration for Latency and Quality
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Solution Overview
Problem
Current radio communication systems, such as legacy LTE, face challenges in configuring uplink shared channels effectively, leading to potential deterioration in communication throughput and quality, especially in reducing latency for ultra-reliable and low-latency communications in future systems like NR.
Innovation Solution
The implementation of dynamic and configured grant-based transmission methods for uplink shared channels, allowing for flexible configuration of transmission parameters such as resource allocation, power control, and CSI reporting, enables appropriate configuration of uplink shared channels to enhance communication quality and reduce latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If dynamic UL grant and configured grant based transmission methods are applied to reduce latency, then communication latency is reduced, but communication throughput and quality may deteriorate without appropriate configuration
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting transmission parameters including time domain parameters (K2, slot offset), frequency domain parameters (resource allocation), power control parameters (P0, alpha), and CSI reporting parameters. These parameter changes enable the system to optimize both latency and communication quality by adapting transmission characteristics to current channel conditions and traffic requirements.
Solution Approach 2:
The patent implements dynamics through the dynamic UL grant mechanism that allows real-time adjustment of transmission parameters based on current network conditions. The base station can dynamically modify resource allocation, power control settings, and timing parameters to balance latency reduction with maintaining communication quality, making the system adaptable rather than static.
2Adaptability or versatility
If multiple transmission methods (dynamic grant and configured grant) are supported for uplink shared channel, then flexibility in configuration is improved, but device complexity and configuration difficulty increase
Solution Approach 1:
The patent applies segmentation by separating the configuration of multiple transmission methods into distinct configurable components. Each transmission method (dynamic grant and configured grant) has its own set of parameters that can be independently configured and activated. This segmentation allows the system to support multiple transmission methods while managing complexity through modular configuration management.
Solution Approach 2:
The patent implements universality through a unified configuration framework that manages both dynamic grant and configured grant transmission methods within a single system architecture. The base station and user terminal share common configuration parameters and procedures, allowing the same infrastructure to support multiple transmission modes without requiring separate dedicated systems for each method.
3Productivity
If appropriate configuration of uplink shared channel is implemented, then communication throughput is improved, but configuration difficulty increases due to multiple transmission methods
Solution Approach 1:
The patent applies feedback mechanisms through CSI (Channel State Information) reporting that provides the base station with information about channel conditions. This feedback enables automatic optimization of transmission parameters including resource allocation, power control, and modulation schemes, allowing the system to achieve high throughput without manual configuration intervention. The feedback loop continuously adjusts parameters based on measured channel quality.
Solution Approach 2:
The patent implements self-service through autonomous configuration optimization where the system automatically adjusts transmission parameters based on channel conditions and traffic patterns. The user terminal and base station work together to self-optimize configuration parameters including power control settings, resource allocation, and timing parameters without requiring complex manual configuration, thereby achieving high throughput with reduced operational complexity.
Data Source
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Figure 3
AI summary
When a plurality of transmission methods of an uplink shared channel are supported, transmission of the uplink shared channel is appropriately configured. A user terminal includes: reception section that receives configuration information of a first uplink shared channel, a second uplink shared channel and a third uplink shared channel via a higher layer signaling, the first uplink shared channel being scheduled by the higher layer signaling, the second uplink shared channel being scheduled by the higher layer signaling and triggered by downlink control information, and the third uplink shared channel being scheduled by the downlink control information; and a control section that performs control on transmission of at least one uplink shared channel of the first uplink shared channel, the second uplink shared channel and the third uplink shared channel based on the configuration information, the control being different from that of transmission of other uplink shared channels.