Multi-TRP Power Control Parameter Segmentation

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Solution Overview

Problem

Current uplink power control methods in cellular communication networks lack flexibility, particularly in multi-TRP scenarios, where power control parameters are not optimized for different transmission reception points, leading to suboptimal resource utilization and user experience.

Innovation Solution

The implementation of separate power control parameters for multiple transmission reception points (TRPs) using a physical uplink control channel resource, where two subsets of power control parameters are dynamically assigned and used for transmitting or repeating uplink control information to different TRPs, enabling flexible power control adjustments based on specific link characteristics.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a single set of power control parameters is used for all TRPs, then the device complexity is reduced, but the adaptability to different link characteristics deteriorates

Engineering Contradiction:

Improvepower control parameter managementVSAvoidpower control adaptability to different TRPs

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The power control parameters are segmented into multiple subsets, where each subset is specifically configured for a particular TRP. This allows the terminal device to apply appropriate power control parameters based on the target TRP, improving adaptability while maintaining manageable complexity through structured organization of parameter subsets

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different power control parameters are assigned to different TRPs based on their specific link characteristics. Each TRP receives localized power control optimization tailored to its channel conditions, distance, and interference environment, rather than using a uniform parameter set for all TRPs

Inventive Principle:

Principle #3Local quality

2Adaptability or versatility

If separate power control parameters are configured for each TRP, then the adaptability to different link characteristics is improved, but the device complexity increases

Engineering Contradiction:

Improvepower control adaptability to different TRPsVSAvoidpower control parameter management

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The network side pre-configures multiple subsets of power control parameters before the terminal device needs to transmit to different TRPs. This preliminary configuration allows the terminal device to simply select from pre-prepared parameter subsets rather than calculating or managing parameters in real-time, reducing operational complexity while maintaining high adaptability

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The network side acts as an intermediary that manages and distributes appropriate power control parameter subsets to the terminal device based on TRP-specific requirements. This mediates the complexity by centralizing parameter management at the network side while keeping the terminal device's task to merely select and apply the provided subsets

Inventive Principle:

Principle #24Intermediary (Mediator)

3Productivity

If power control parameters are optimized for specific TRPs, then the resource utilization is improved, but the signaling overhead increases

Engineering Contradiction:

Improveresource utilizationVSAvoidsignaling overhead for parameter configuration

Core Design Contradiction:

ProductivityVSQuantity of substance

Solution Approach 1:

Instead of configuring all possible power control parameters for all possible TRPs, the system configures only the necessary subsets that are actually needed for the terminal device's current operations. This partial configuration approach reduces signaling overhead while still providing sufficient adaptability for the specific deployment scenario

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The power control parameter subsets are designed to be universally applicable across different TRP scenarios. Each subset can serve multiple purposes and different TRPs with similar characteristics, reducing the total number of unique parameter sets that need to be signaled while maintaining optimization for specific TRP types

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20240056990A1Assigning power control parameters for multiple transmission reception point operation

Publication Date: 2024.02.15 NOKIA TECHNOLOGIES OY

AI summary

Disclosed is a method comprising receiving a configuration from a base station, wherein the configuration comprises at least a first subset of power control parameters and a second subset of power control parameters. The first subset of power control parameters and the second subset of power control parameters are assigned to a physical uplink control channel resource. Uplink control information is transmitted or repeated at least to a first transmission reception point and to a second transmission reception point using the physical uplink control channel resource, wherein the first subset of power control parameters is used for transmitting or repeating to the first transmission reception point, and the second subset of power control parameters is used for transmitting or repeating to the second transmission reception point.