Unified TCI Default Beam Selection for Multi-TRP CORESETs
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing transmission configuration indicators (TCI) for multi-transmit receive points (TRPs) due to complexities in beam management and synchronization across different control resource sets (CORESET pools) and component carriers.
Innovation Solution
Implementing a unified transmission configuration indicator (TCI) framework that allows for default beam selection based on CORESET pool indexes, enabling seamless communication by determining a default beam condition for downlink communications, regardless of the specific CORESET pool index or component carrier involved.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate TCI states are managed for different CORESET pools and component carriers, then beam management flexibility is improved, but system complexity and synchronization difficulty increase
Solution Approach 1:
The patent segments the TCI state management by introducing separate TCI state indications for different CORESET pools (first CORESET pool index and second CORESET pool index). This allows independent beam management for each pool while maintaining overall system coordination, resolving the contradiction between flexibility and complexity.
Solution Approach 2:
The patent introduces a unified TCI framework that acts as an intermediary layer between multiple CORESET pools and component carriers. This unified framework coordinates beam management across different pools and carriers, providing flexibility at the granular level while maintaining system-wide simplicity through centralized management.
2Productivity
If unified TCI framework is implemented across multiple TRPs and component carriers, then communication efficiency is improved, but beam synchronization complexity increases
Solution Approach 1:
The patent implements a universal TCI framework that serves multiple functions simultaneously: it manages beam indications across different CORESET pools, coordinates transmissions from multiple TRPs, and handles component carrier configurations. This multi-functional approach improves communication efficiency while avoiding the need for separate synchronization mechanisms for each function.
Solution Approach 2:
The patent applies preliminary action by pre-configuring TCI states and beam parameters before actual data transmission. The unified TCI framework establishes beam synchronization rules and default beam conditions in advance, allowing efficient communication without real-time synchronization complexity during active transmission.
3Reliability
If default beam conditions are determined per CORESET pool index, then downlink communication reliability is improved, but processing overhead increases
Solution Approach 1:
The patent determines default beam conditions associated with each CORESET pool index in advance, before actual downlink communication occurs. This preliminary determination of default beams for each pool reduces processing overhead during active communication, as the beam selection logic is pre-established rather than computed in real-time.
Solution Approach 2:
The patent applies local quality by associating specific default beam conditions with each CORESET pool index individually. This allows optimized beam selection for each pool's specific characteristics while avoiding the need for complex global optimization, reducing processing overhead through localized decision-making.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, in a first control resource set (CORESET) associated with a first CORESET pool index, first downlink control information (DCI) that indicates a first transmission configuration indicator (TCI) state to be applied starting from a first starting time. The UE may receive, in a second CORESET associated with a second CORESET pool index, second DCI that indicates a second TCI state to be applied starting from a second starting time. The UE may receive third DCI that schedules a downlink communication. The UE may receive the downlink communication using a default beam associated with the first CORESET pool index or the second CORESET pool index in connection with a default beam condition associated with the third DCI. Numerous other aspects are described.