Terminal Power Control Parameter Selection for MTRP PUCCH/PUSCH
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Solution Overview
Problem
Existing standards fail to provide a clear method for determining transmit power control parameters for Physical Uplink Control Channel (PUCCH) and Physical Uplink Shared Channel (PUSCH) in multiple transmission/reception point (MTRP) scenarios, leading to potential deterioration in communication throughput and quality.
Innovation Solution
A terminal equipped with a receiving section to receive information on multiple power control parameter sets and a control section to determine the closed loop index for PUCCH transmit power control based on configured parameter sets, using activation commands and spatial relation information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing standards are used for transmit power control in MTRP scenarios, then device complexity is reduced, but communication quality and throughput deteriorate due to inability to appropriately determine parameters
Solution Approach 1:
The patent segments the power control parameter determination process by introducing separate parameter sets for different TRPs. Each TRP has its own power control parameter set (first set for first TRP, second set for second TRP), allowing independent optimization of transmit power for each transmission point without requiring complex joint optimization algorithms.
Solution Approach 2:
The patent applies preliminary action by pre-configuring multiple power control parameter sets before MTRP operation begins. The terminal receives and stores multiple parameter sets in advance, so when MTRP transmission is activated, the appropriate parameters are already available, eliminating the need for real-time parameter calculation and reducing communication latency.
2Productivity
If multiple power control parameter sets are configured for MTRP operation, then communication throughput is improved, but device complexity increases due to additional parameter management
Solution Approach 1:
The patent implements self-service by enabling the terminal to automatically select and apply the appropriate power control parameter set based on activation commands received from the base station. The terminal autonomously determines which parameter set to use without requiring complex coordination or additional signaling, thereby improving throughput while minimizing the increase in device complexity.
3Reliability
If parameter determination methods are not clearly defined, then ease of implementation is improved, but communication reliability deteriorates due to inappropriate parameter values
Solution Approach 1:
The patent applies parameter changes by introducing multiple distinct power control parameter sets with different parameter values optimized for different TRPs. Instead of using a single generic parameter set, the system changes parameters based on which TRP is actively transmitting, ensuring reliable communication while maintaining clear implementation rules through standardized parameter set configurations.
Data Source
AI summary
A terminal according to an aspect of the present disclosure includes a receiving section that receives information regarding more than one power control parameter set for operation in a frequency range 1, and a control section that determines, in a case where an activation command indicating one or two power control parameter sets of the more than one power control parameter set is received, a value of a closed loop index for transmit power control for a Physical Uplink Control Channel (PUCCH), based on a value of a closed loop index configured for the one or two power control parameter sets. According to an aspect of the present disclosure, parameters for transmit power control for PUCCH/PUSCH can be appropriately determined.