Terminal Uplink Power Control via Beta Offset Segmentation
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Solution Overview
Problem
Current radio communication systems, particularly in LTE, have not adequately addressed the efficient management and transmission of uplink control information, leading to suboptimal communication efficiency.
Innovation Solution
A terminal apparatus that receives specific information to set transmit power for the physical uplink shared channel based on delta modulation and coding scheme (MCS) enabled, using different beta offset values for control data in various subframe sets, optimizing power configuration for efficient communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single beta offset value is used for all subframes, then the configuration is simple, but the communication efficiency is reduced due to inability to optimize power for different traffic patterns
Solution Approach 1:
The patent divides the subframes into two distinct sets (first subframe set and second subframe set) with different beta offset values. The first subframe set uses a first beta offset value while the second subframe set uses a second beta offset value, allowing optimized power configuration for different traffic patterns without requiring configuration for every individual subframe.
Solution Approach 2:
Different beta offset values are applied to different subframe sets based on their specific traffic characteristics. The first beta offset value is optimized for traffic patterns in the first subframe set, while the second beta offset value is optimized for traffic patterns in the second subframe set, achieving local optimization rather than uniform configuration.
2Power
If delta MCS is enabled with multiple beta offset values for different subframe sets, then power optimization is achieved, but the information processing complexity increases
Solution Approach 1:
The patent segments the subframes into two sets and associates different beta offset values with each set. The terminal apparatus receives indication information that identifies which subframe set a given subframe belongs to, and applies the corresponding beta offset value, enabling power optimization through structured segmentation rather than unmanaged complexity.
Solution Approach 2:
The patent changes the beta offset parameter values based on the subframe set identification. When delta MCS is enabled, the terminal apparatus uses the first beta offset value for subframes in the first subframe set and the second beta offset value for subframes in the second subframe set, achieving parameter-based power optimization.
3Adaptability or versatility
If flexible subframes are used for traffic adaptation, then traffic flexibility is improved, but the uplink control information management becomes insufficient
Solution Approach 1:
The patent segments subframes into different sets with distinct beta offset configurations, providing structured management for flexible subframes. This segmentation enables the system to maintain reliable uplink control information management even when flexible subframes are used for traffic adaptation, by ensuring appropriate power configuration for each subframe type.
Solution Approach 2:
Different beta offset values are applied to different subframe sets to ensure appropriate power configuration for local traffic characteristics. This local optimization maintains reliable uplink control information management while allowing flexible subframes to be used for traffic adaptation in specific sets.
Data Source
AI summary
In a terminal apparatus communication with a base station apparatus, transmit power for a PUSCH transmission is set based on a beta offset in a case where a delta MCS is enabled. In regard to control data sent via the PUSCH without the UL-SCH data in subframes belonging to a first subframe set, a value of the beta offset is based on third information. In regard to the control data sent via the PUSCH without the UL-SCH data in subframes belonging to a second subframe set, the value of the beta offset is based on fourth information.