UE Emission Control Parameter Adaptation for Overlapping TTIs

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Solution Overview

Problem

Modern wireless communication systems face challenges in efficiently managing short Transmission Time Intervals (TTIs) due to their impact on resource usage and interference, particularly in uplink or sidelink transmissions, which affect power control and compliance with out-of-band emission requirements.

Innovation Solution

The method involves configuring user equipment (UE) and network nodes to adapt power control based on TTI configurations, allowing for optimized power management and emission control parameters that account for overlapping TTIs, ensuring reliable and predictable power control while meeting regulatory emission requirements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If short TTIs are used to reduce transmission time, then transmission speed is improved, but interference and power control complexity increase

Engineering Contradiction:

Improvetransmission speedVSAvoidinterference

Core Design Contradiction:

SpeedVSObject-affected harmful factors

Solution Approach 1:

The patent applies dynamics by making the emission control parameter adaptive rather than static. The parameter changes dynamically based on the TTI configuration and overlapping conditions, allowing the system to optimize power control in real-time for short TTIs while managing interference effectively

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the emission control parameter based on TTI configuration and overlapping detection. By adjusting this parameter according to the specific transmission scenario, the system resolves the contradiction between achieving high transmission speed with short TTIs and managing the resulting interference

Inventive Principle:

Principle #35Parameter changes

2Speed

If short TTIs are used to reduce transmission time, then transmission speed is improved, but power control reliability deteriorates

Engineering Contradiction:

Improvetransmission speedVSAvoidpower control reliability

Core Design Contradiction:

SpeedVSReliability

Solution Approach 1:

The patent implements feedback by detecting whether TTIs overlap and using this information to adapt the emission control parameter. This feedback mechanism ensures that power control remains reliable even when using short TTIs for high-speed transmission, as the system continuously adjusts based on the actual transmission configuration

Inventive Principle:

Principle #23Feedback

3Productivity

If adaptive emission control parameter is used for short TTIs, then power control optimization is improved, but system complexity increases

Engineering Contradiction:

Improvepower control optimizationVSAvoidsystem complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent manages complexity by changing a single key parameter (emission control parameter) based on TTI configuration. This approach achieves power control optimization without requiring complex system-wide changes, as the adaptation is focused on a specific parameter that directly impacts power control behavior

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent applies preliminary action by pre-defining the relationship between TTI configuration and emission control parameter values. This allows the system to quickly adapt to different scenarios without complex real-time calculations, reducing the computational complexity while maintaining optimization effectiveness

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS11323232B2UE emission control parameter adaption under overlapping TTIs

Publication Date: 2022.05.03 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

AI summary

This disclosure pertains to a method for operating a user equipment (10) in a radio access network, the method comprising transmitting signaling based on an emission control parameter, the emission control parameter being based on a TTI configuration and/or structure. There are also disclosed related devices and methods.