Multi-TCI State Configuration for High-Speed Beam Management
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Solution Overview
Problem
In single frequency networks (SFNs), user equipment (UE) faces challenges in determining the directions of multiple transmitting beams due to the conventional process of configuring, activating, and dynamically indicating Transmission Configuration Indicator (TCI) states, which only allows for one TCI state to be activated or indicated at a time. This leads to frequent re-configuration of TCI states for UE, especially in high-speed movements.
Innovation Solution
The proposed solution involves electronic equipment that configures multiple TCI states corresponding to multiple transmitting beams from at least two cells and sends indication or activation information to the user equipment to indicate or activate two or more TCI states. This allows the user equipment to determine multiple receiving beams, reducing the need for frequent re-configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If only one TCI state is activated or dynamically indicated at a time in conventional process, then the UE can determine one transmitting beam direction, but the UE cannot determine directions of multiple transmitting beams and cannot perform reception using multiple receiving beams
Solution Approach 1:
The patent segments the TCI state indication process by introducing a first TCI state for indicating a first transmitting beam direction and a second TCI state for indicating a second transmitting beam direction. This segmentation allows the UE to determine multiple transmitting beam directions simultaneously, resolving the limitation of conventional single TCI state indication while maintaining manageable complexity through structured separation of functions.
2Adaptability or versatility
If the UE is in high-speed movement and handovers frequently between cells, then the UE needs to be re-configured with TCI state frequently, but frequent re-configuration increases signaling overhead and complexity
Solution Approach 1:
The patent applies preliminary action by configuring multiple TCI states for the UE in advance, including TCI states corresponding to different cells. When the UE performs handover between cells, it can switch between pre-configured TCI states without requiring frequent re-configuration signaling. This reduces signaling overhead and time loss during high-speed movement and frequent handovers.
3Productivity
If multiple TCI states are configured for UE corresponding to multiple cells, then the UE can determine multiple receiving beams, but the conventional activation and indication process only allows one TCI state at a time
Solution Approach 1:
The patent introduces dynamic switching capability between multiple TCI states. The network can dynamically indicate which TCI state(s) to activate based on current transmission needs, while the UE maintains the ability to switch between pre-configured TCI states. This dynamic approach enables efficient multi-beam reception while maintaining operational simplicity through standardized activation procedures.
Data Source
AI summary
The present application relates to an electronic device, a wireless communication method, and a computer-readable storage medium. The electronic device comprises a processing circuit, and is configured to: configure, for a user equipment, multiple TCI states respectively corresponding to multiple transmitted beams, wherein the multiple transmitted beams are from at least two cells; and send indication information to the user equipment to indicate two or more TCI states of the multiple TCI states, or send activation information to the user equipment to activate the two or more TCI states of the multiple TCI states. By means of the electronic device, the wireless communication method and the computer-readable storage medium of the present application, the configuration, activation, and dynamic indication process of TCI states can be optimized.