TCI State Indication for Multi-TRP Channel Configuration
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Solution Overview
Problem
Existing communication technologies lack a method to efficiently indicate Transmission Configuration Indicator (TCI) states for multi-transmission reception points (M-TRP) while reducing signaling overhead.
Innovation Solution
A method and apparatus for indicating TCI states that configure a first channel based on multiple sets of TCI states and a second channel based on a single set of TCI states, allowing for improved signal quality in M-TRP transmissions by using quasi co-location information or spatial parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If unified TCI state is introduced to reduce signaling overhead, then signaling overhead is reduced, but the system cannot support multi-transmission reception point (M-TRP) scenarios
Solution Approach 1:
The patent segments the TCI state configuration into multiple independent sets (first set, second set, etc.), where each set can be independently configured and activated for different TRPs. This allows the system to support M-TRP scenarios by assigning different TCI state sets to different transmission reception points, while still maintaining efficient signaling through unified indication mechanisms.
Solution Approach 2:
The patent introduces a new dimension to TCI state management by organizing states into multiple sets that can be selectively activated. Instead of a single flat TCI state structure, the system now has a hierarchical structure with multiple sets, allowing efficient indication through activation commands that select which set to use, thereby supporting M-TRP without proportionally increasing signaling overhead.
2Adaptability or versatility
If multiple sets of TCI states are configured for M-TRP, then M-TRP transmission capability is improved, but device complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple sets of TCI states through higher-layer signaling (RRC or MAC CE) before actual transmission occurs. The terminal receives and stores these pre-configured sets, then only needs to receive activation indications for specific sets during transmission. This separates the complex configuration phase from the simple activation phase, reducing real-time processing complexity.
Solution Approach 2:
The patent introduces dynamic activation mechanisms where the terminal can switch between different TCI state sets based on activation indications. The system transitions from static single-set configuration to dynamic multi-set selection, allowing the terminal to adapt to different M-TRP scenarios by activating appropriate state sets while maintaining manageable complexity through standardized activation procedures.
Data Source
AI summary
A method and apparatus indicate a transmission configuration indicator (TCI) state. The method includes: receiving configuration information in which the configuration information is configured to configure a first channel for a transmission based on N sets of TCI states and configure a second channel for a transmission based on one set of TCI states, where N is an integer greater than 1.


