TCI State Update for Multi-TRP Beam Management Across Different PCIs
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing communication technologies face challenges in efficiently managing multiple Transmit/Receive Points (TRPs) with different Physical Cell Identifiers (PCIs) in 5G networks, particularly in updating Transmission Configuration Indication (TCI) states, leading to limitations in beam management and data transmission flexibility.
Innovation Solution
A method for updating TCI states based on terminal device capability information, allowing for flexible communication with multiple TRPs, including the use of unified TCI frameworks to manage multiple TCI states and support simultaneous communication with TRPs having different PCIs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple TCI states are updated for multiple TRPs with different PCIs, then beam management flexibility and communication efficiency are improved, but system complexity and difficulty of managing TCI state updates increase
Solution Approach 1:
The patent segments the TCI state update process by introducing update type indicators that divide the update mechanism into distinct categories (e.g., simultaneous update, sequential update, selective update). This segmentation allows the system to handle multiple TRPs with different PCIs in a structured manner, reducing the complexity of managing diverse update scenarios while maintaining flexibility.
Solution Approach 2:
The patent implements dynamic TCI state management by allowing the network device to flexibly select and indicate different update types based on terminal capability information and current communication conditions. The system can dynamically switch between different update strategies (e.g., updating all TCI states, updating only subset, updating in different sequences) to adapt to varying beam management requirements across multiple TRPs.
2Productivity
If unified TCI framework is extended to support multiple TRPs with different PCIs, then communication efficiency and data transmission flexibility are improved, but the complexity of TCI state management and synchronization increases
Solution Approach 1:
The patent introduces an intermediary mechanism in the form of update type indicators that mediate between the network device's TCI state configuration intentions and the terminal device's execution. These indicators act as a control layer that simplifies the management complexity by providing a standardized interface for updating multiple TCI states across different TRPs, while still enabling sophisticated beam management strategies.
Solution Approach 2:
The patent manages complexity by changing key parameters of the TCI state update process, such as the timing of updates (simultaneous vs. sequential), the scope of updates (all states vs. selective states), and the triggering conditions. By parameterizing the update mechanism, the system can efficiently support multiple TRPs with different PCIs without requiring fundamentally complex management structures.
3Adaptability or versatility
If capability information-based indication is used to determine update types, then adaptability to different terminal devices is improved, but the overhead of capability information exchange and processing increases
Solution Approach 1:
The patent applies preliminary action by having terminal devices report their capability information (e.g., supported TCI state quantities, update capabilities, processing abilities) in advance during initial connection or capability exchange phases. This pre-exchange of capability data allows the network device to subsequently tailor TCI state update strategies without requiring continuous capability negotiation, thereby reducing ongoing information overhead while maintaining high adaptability.
Data Source
AI summary
Example embodiments of the present disclosure relate to methods of communication, terminal device, network device and a computer readable medium. In an example method, the terminal device may receive from a network device, an indication of at least one update type for updating a first plurality of transmission configuration indication (TCI) states, the indication of at least one update type being determined based on the capability information of the terminal device, and update the first plurality of TCI states based on the at least one update type to obtain a second plurality of TCI states; and then communicate with the network device based on the second plurality of TCI states. As such, there is flexible method to update TCI state for one of TRPs if multiple TCI states mapped to one TCI codepoint in DCI.