Terminal TCI State Application Timing Determination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In next-generation radio communication systems, the indefinite operation time for applying a transmission configuration indication (TCI) state leads to reduced communication throughput, as the application of indicated TCI states is not clearly defined.
Innovation Solution
A terminal is equipped with a receiving section to decode downlink control information (DCI) and a control section that determines a specific time for applying the TCI state based on reported parameters, specification-defined parameters, and cell-specific parameters, ensuring the TCI state is applied from a first slot after a specific acknowledgement (ACK) corresponding to the DCI format.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the TCI state application time is left indefinite to maintain system flexibility, then the system can adapt to various scenarios, but communication throughput is reduced due to uncertainty in state application timing
Solution Approach 1:
The patent changes the parameter of TCI state application timing from indefinite to determined by specific formulas. The application time is calculated based on parameters such as subcarrier spacing, cyclic prefix length, and processing capability indicators, transforming the timing from an ambiguous state to a precisely calculable one, thereby resolving the contradiction between flexibility and throughput.
2Productivity
If the TCI state application timing is precisely determined to improve communication throughput, then throughput increases, but the system becomes more complex due to multiple parameter considerations
Solution Approach 1:
The patent segments the determination of TCI state application time into distinct components: base time calculation, subcarrier spacing adjustment, cyclic prefix consideration, and processing capability offset. Each component is handled separately through specific formulas, making the overall complex determination process manageable and systematic rather than monolithic.
Solution Approach 2:
The patent performs preliminary actions by pre-defining formulas and parameter relationships for calculating TCI application time. The system pre-establishes the computational framework using parameters like processing capability indicators and subcarrier spacing, so that when a TCI state needs to be applied, the timing can be quickly determined using the pre-prepared formulas without ad-hoc complex analysis.
Data Source
AI summary
A terminal according to one aspect of the present disclosure includes a receiving section that receives a downlink control information (DCI) format for indicating a transmission configuration indication (TCI) state for a plurality of types of at least one of channels and signals, and a control section that determines specific time, based on at least one of a first parameter reported by the terminal, a second parameter defined in a specification, and a third parameter for a first cell in which the DCI format is received or for a second cell to which the TCI state is applied and that starts application of the TCI state from a first slot after at least the specific time from an acknowledgement (ACK) corresponding to the DCI format. According to one aspect of the present disclosure, it is possible to appropriately apply a TCI state.