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, leading to issues such as maximum power reduction (MPE) and suboptimal resource allocation.
Innovation Solution
The implementation of a transmission configuration index (TCI) state group-based beam indication system, where a processor receives and analyzes power values and power reduction information to determine optimal TCI states for uplink transmissions, enabling dynamic beam management and power control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beamforming is implemented in multi-TRP networks, then communication quality is improved, but maximum power reduction (MPE) issues arise
Solution Approach 1:
The patent segments TCI states into multiple groups (first TCI state group and second TCI state group) where each group is associated with different downlink reference signals. This segmentation allows the system to selectively apply beamforming configurations to different TRPs, thereby improving communication quality while managing power reduction issues by not applying beamforming uniformly across all TRPs.
Solution Approach 2:
The patent implements dynamic beam indication by allowing the network to indicate which TCI state group should be used for uplink transmissions based on real-time conditions. The processor dynamically selects TCI states from the appropriate group based on downlink received power information and power reduction information, enabling adaptive control that balances communication quality and power reduction mitigation.
2Productivity
If dynamic beam management is implemented, then resource allocation is optimized, but system complexity increases
Solution Approach 1:
By dividing TCI states into distinct groups associated with different downlink reference signals, the patent simplifies the beam management process. Instead of managing all TCI states uniformly, the system can independently control and optimize each group, reducing the computational complexity of beam selection while maintaining resource allocation efficiency.
Solution Approach 2:
The patent pre-configures multiple TCI state groups with associated downlink reference signals before actual transmission. This preliminary organization allows the processor to quickly select appropriate TCI states based on pre-computed power information and reduction data, avoiding complex real-time calculations and reducing system complexity during dynamic operation.
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.