TCI State Group Beam Indication for Multi-TRP Power Control
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing beamforming and power control in multi-TRP networks, particularly in scenarios involving multiple TCI states, leading to inefficiencies and potential interference.
Innovation Solution
The system employs a processor to manage transmission configuration indicator (TCI) state groups, reporting power measurements and reductions, and determining optimal TCI states for beam indication based on downlink received power and power reduction information, enabling efficient beam management and power control in multi-TRP environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple TCI states are configured for beam management in multi-TRP networks, then beamforming efficiency and network performance are improved, but system complexity and interference management difficulty increase
Solution Approach 1:
The patent segments TCI states into groups (first TCI state group and second TCI state group) where each group is associated with specific TRPs. This segmentation allows the system to manage multiple TCI states by organizing them into manageable groups, reducing the complexity of processing and selecting individual states while maintaining beamforming efficiency across multiple TRPs.
Solution Approach 2:
The patent introduces TCI state groups as intermediary structures between the individual TCI states and the beam selection process. These groups act as mediators that organize and pre-categorize TCI states according to their associated TRPs, simplifying the beam management process and reducing the complexity of handling multiple states simultaneously.
2Productivity
If multiple TCI states are managed for beam indication, then beamforming performance is improved, but interference between different TCI states increases
Solution Approach 1:
By segmenting TCI states into groups associated with specific TRPs, the patent reduces interference between different TCI states. The segmentation creates clear associations between TCI state groups and their corresponding TRPs, making it easier to manage and select states without causing interference, thus maintaining beamforming performance while reducing harmful interactions.
3Productivity
If TCI state selection is optimized based on power measurements, then beamforming efficiency is improved, but processing time and computational requirements increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring and pre-measuring power levels for TCI states and their associated TRPs before actual beam selection is needed. The system stores this pre-measured information (first measured power level and second measured power level) so that during beam selection, the processor can quickly compare and select optimal states without performing time-consuming measurements, thus improving efficiency while reducing processing time.
Solution Approach 2:
The patent uses feedback mechanisms where the processor compares measured power levels of different TCI states and their associated TRPs to determine optimal beam directions. This feedback loop allows the system to learn from previous measurements and make faster, more accurate selections, improving beamforming efficiency while minimizing processing time through intelligent decision-making based on historical data.
Data Source
AI summary
A wireless transmit/receive unit (WTRU) may be configured to receive configuration information associated with a first transmission configuration indicator (TCI) state group and a second TCI state group. The WTRU may be configured to report first respective measured downlink received power values and first respective determined power reduction values. The WTRU may be configured to report second respective measured downlink received power values and second respective determined power reduction values. The WTRU may be configured to receive an indication of the first TCI state group via a downlink transmission. The WTRU may be configured to determine a first TCI state from the first TCI state group based on downlink received power information and power reduction information. The WTRU may be configured to send an uplink transmission based on the first determined TCI state.