Terminal TCI State Application for Carrier Aggregation
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Solution Overview
Problem
Current radio communication systems face challenges in determining an appropriate Transmission Configuration Indication (TCI) state for multiple cells and component carriers, leading to potential degradation in communication quality and throughput.
Innovation Solution
A terminal equipped with a receiving section to indicate and a control section to apply TCI states for downlink and uplink communications across multiple cells, enabling appropriate configuration and activation of TCI states for carrier aggregation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If TCI states are configured for multiple cells/component carriers, then communication capacity and throughput are improved, but determination complexity and configuration overhead increase
Solution Approach 1:
The patent applies universality by configuring a single TCI state that can be applied to multiple cells or component carriers simultaneously. The base station transmits one TCI state indication that universally applies to a plurality of cells, eliminating the need for separate TCI state configurations for each cell. This multi-functional approach maintains high communication throughput across multiple cells while significantly reducing determination complexity and configuration overhead.
2Reliability
If separate TCI states are determined for each cell, then communication quality is improved, but configuration overhead and signaling complexity increase
Solution Approach 1:
The patent merges the TCI state configuration approach by combining multiple cell-specific TCI state indications into a single unified TCI state indication. Instead of transmitting separate TCI states for each cell, the base station transmits one consolidated TCI state that applies to multiple cells. This merging reduces signaling overhead and information loss while maintaining appropriate communication quality through the unified configuration approach.
3Ease of operation
If TCI state configuration is simplified for multiple cells, then configuration overhead is reduced, but adaptability to cell-specific conditions decreases
Solution Approach 1:
The patent applies dynamics by enabling flexible switching between unified TCI state application and cell-specific TCI state application. The system can dynamically adapt the TCI state configuration mode based on network conditions and cell-specific requirements. When cells have similar characteristics, a unified TCI state simplifies configuration; when cell-specific conditions require different parameters, the system can provide cell-specific adaptations, thus maintaining both ease of operation and adaptability.
Data Source
AI summary
A terminal according to an aspect of the present disclosure includes: a receiving section that receives an indication of one or more transmission configuration indication (TCI) states for at least one of downlink and uplink, with respect to one of a plurality of cells for carrier aggregation; and a control section that applies the one or more TCI states to a part or all of the plurality of cells. An aspect of the present disclosure allows a TCI state with respect to a plurality of cells/CCs to be appropriately determined.