Terminal Power Control Parameter Determination for Uplink Transmission
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Solution Overview
Problem
In future radio communication systems, determining a definite power control parameter for uplink transmission is challenging, leading to potential degradation in communication quality and throughput.
Innovation Solution
A terminal is equipped with a control section to determine two values of a power control parameter when physical uplink control channel spatial relation information is not provided, using these values for transmission along with transmission occasions associated with indices from a control resource set or transmission configuration indication state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single power control parameter is used for uplink transmission, then the control method is simple, but communication quality and throughput are degraded
Solution Approach 1:
The patent segments the power control parameter into two distinct values (first power control parameter and second power control parameter) corresponding to different transmission scenarios. When PUCCH spatial relation information is provided, one parameter is used; when not provided, the other parameter is used. This segmentation allows the system to optimize power control for different conditions without requiring complex real-time analysis, thus improving communication quality while maintaining relatively simple control logic.
Solution Approach 2:
The patent changes the power control parameter based on the presence or absence of PUCCH spatial relation information. By defining different parameter values for different conditions (one parameter when spatial relation information is provided, another when it is not), the system adapts the power control parameters to match the transmission scenario, thereby improving communication reliability without requiring complex real-time parameter optimization.
2Productivity
If two power control parameter values are determined and used based on transmission conditions, then communication quality is improved, but the determination complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-determining two power control parameter values in the control section before transmission occurs. These parameters are prepared in advance based on whether PUCCH spatial relation information is provided, eliminating the need for complex real-time parameter calculation during transmission. This preliminary preparation improves throughput by ensuring appropriate power control is immediately available while keeping the control section processing relatively simple.
Solution Approach 2:
The patent implements parameter changes by selecting between two pre-determined power control parameter values based on the transmission condition (presence or absence of PUCCH spatial relation information). This approach allows the system to adapt parameters to different scenarios without requiring complex real-time optimization algorithms, thereby improving throughput while maintaining manageable control section complexity.
Data Source
AI summary
A terminal according to one aspect of the present disclosure includes: a control section that determines two values of a power control parameter when physical uplink control channel (PUCCH) spatial relation information is not provided; and a transmitting section that transmits a PUCCH by using at least one of the two values of the power control parameter and one or more transmission occasions. The two values are associated with two respective indices. The two indices are either two index values of a control resource set (CORESET) pool index or two index values of a transmission configuration indication (TCI) state associated with one codepoint of a field in downlink control information. According to one aspect of the present disclosure, a power control parameter can be appropriately determined.