mTRP Uplink Power Control Using TRP-Specific TCI States
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Next-generation wireless communication systems, such as 5G NR, face challenges in optimizing network services for various use cases due to increasing radio access demands, necessitating improvements in multi-Transmission and Reception Point (mTRP) operations for enhanced data rate, latency, and reliability.
Innovation Solution
A method and device for mTRP operations involving a User Equipment (UE) applying distinct Transmission Configuration Indication (TCI) states and Uplink (UL) power control configurations for communicating with multiple TRPs, facilitated by Radio Resource Control (RRC) messages and Medium Access Control (MAC) Control Elements (CEs, to manage UL transmissions effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate power control configurations are applied for each TRP in mTRP operations, then transmission reliability and coverage are improved, but device complexity and signaling overhead increase
Solution Approach 1:
The patent segments the power control configuration into TRP-specific components, where each TRP has its own power control configuration parameters. This allows the UE to apply different power control settings for different TRPs, improving transmission reliability while managing device complexity through structured segmentation of power control parameters per TRP
Solution Approach 2:
The patent implements local quality by applying TRP-specific power control configurations, where each TRP receives customized power control parameters based on its specific channel conditions and requirements. This enables localized optimization of transmission power for each TRP, enhancing reliability without requiring global reconfiguration of all power control parameters
2Reliability
If multiple separate power control configurations are maintained for multiple TRPs, then transmission reliability improves, but signaling overhead increases
Solution Approach 1:
The patent merges common power control parameters across multiple TRPs into unified configurations, while maintaining TRP-specific parameters only where necessary. This reduces signaling overhead by transmitting shared parameters once rather than repeating them for each TRP, while still maintaining the ability to differentiate power control per TRP when needed for reliability
3Productivity
If TRP-specific power control configurations are implemented, then data rate and coverage are enhanced, but system complexity increases
Solution Approach 1:
The patent implements dynamic power control where the UE can adaptively select and apply appropriate power control configurations based on current transmission conditions and TRP selections. This dynamic approach enables the system to achieve high data rates when needed while reducing complexity by using simplified configurations during normal operations, optimizing the trade-off between productivity and complexity
Data Source
AI summary
Methods and devices for multi-Transmission and Reception Point (mTRP) operations are provided. A method performed by a User Equipment (UE) includes applying a first Transmission Configuration Indication (TCI) state and a first Uplink (UL) power control configuration, which are associated with a first TRP, to perform a first UL transmission toward the first TRP; and applying a second TCI state and a second UL power control configuration, which are associated with the second TRP, to perform a second UL transmission toward the second TRP.