Unified TCI Signaling for Reliable Multi-TRP Communication
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently supporting multi-TRP transmission with high signaling overhead and complex communication environments, particularly in enhancing the reliability and robustness of channels like PDCCH, PUSCH, and PUCCH, due to the lack of detailed implementation of the unified TCI framework.
Innovation Solution
The proposed solution involves improving beam/TCI state/channel resource configuration and beam failure recovery procedures by grouping signals/channels into combinations that share the same transmission parameters, utilizing unified TCI states, and enhancing DCI messaging to support multi-TRP transmission effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate TCI indications are used for different control resource set pools, then beam management flexibility is improved, but signaling overhead increases
Solution Approach 1:
The patent implements a unified TCI framework where a single TCI indication in DCI can simultaneously indicate beam configurations for multiple control resource set pools (first CORESET pool and second CORESET pool). This multi-functional approach allows one TCI field to serve multiple purposes, reducing the number of separate TCI indications needed while maintaining the ability to manage beams for different TRPs independently through the unified framework
2Reliability
If multi-TRP transmission is implemented with separate TCI frameworks, then transmission reliability is improved, but device complexity increases
Solution Approach 1:
The patent merges the separate TCI frameworks for first and second control resource set pools into a unified TCI framework. The unified framework maintains distinct TCI states for different TRPs but manages them through a single standardized interface and processing flow, reducing device complexity while preserving the reliability benefits of multi-TRP transmission
3Adaptability or versatility
If detailed implementation of unified TCI framework is provided, then multi-TRP transmission support is improved, but implementation complexity increases
Solution Approach 1:
The patent segments the unified TCI framework into distinct operational components: TCI state configuration for first CORESET pool, TCI state configuration for second CORESET pool, and unified TCI indication mechanisms. This segmentation allows detailed multi-TRP support through clear, modular implementation steps while managing complexity through structured organization of the framework elements
Data Source
AI summary
Embodiments of the present disclosure relate to a method, device and computer readable storage medium of communication. The method comprises receiving at least one DCI message, the at least one DCI message indicating at least one of the following: a first TCI indication, a second TCI indication, or a third TCI indication; determining at least one TCI state based on the at least one DCI message; and performing a transmission with a network based on the at least one TCI state. In this way, multiple TCI states may be indicated for a multi-TRP transmission.