Terminal Apparatus SCG Deactivation Beam Failure Detection
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Solution Overview
Problem
In dual connectivity scenarios for 5G cellular communication, terminal apparatuses consume excessive power to continuously monitor multiple cell groups for high-capacity data communication, necessitating a method to efficiently manage cell group activation and deactivation to reduce power consumption.
Innovation Solution
A terminal apparatus and base station apparatus system that includes a processing unit capable of deactivating and activating Secondary Cell Groups (SCGs) based on commands received, with the option to suspend beam failure detection during deactivation, and resume it upon activation, optimizing power usage by controlling SCG states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal apparatus continuously monitors multiple cell groups to enable low-delay data communication with large capacity, then communication reliability is improved, but power consumption increases
Solution Approach 1:
The patent applies dynamics by making the SCG monitoring state changeable between active and deactivated states. The terminal apparatus dynamically adjusts its monitoring behavior based on received commands, transitioning from continuous monitoring (high reliability) to reduced monitoring (low power consumption) as needed
Solution Approach 2:
The patent changes the monitoring parameter state by introducing deactivation commands that alter the monitoring frequency or suspension status. When the SCG is deactivated, the terminal changes its monitoring parameter from continuous to reduced or suspended, thereby reducing power consumption while maintaining the ability to reactivate when necessary
2Use of energy by moving object
If the terminal apparatus deactivates the SCG to reduce power consumption, then power efficiency is improved, but beam failure detection capability deteriorates
Solution Approach 1:
The patent segments the monitoring function by separating full monitoring (when active) from reduced monitoring (when deactivated). The beam failure detection is selectively applied only when needed, rather than continuously, allowing power savings while maintaining detection capability on demand
Solution Approach 2:
The patent implements periodic action by suspending beam failure detection during SCG deactivation and resuming it when the SCG is reactivated. This periodic on/off pattern of detection aligns with the activation/deactivation cycles, providing detection capability only when the SCG is actively used
Data Source
AI summary
A processing unit of a terminal apparatus communicates with a base station apparatus using an MCG and an SCG, determines whether to perform beam failure detection in the terminal apparatus based on whether information indicating whether to perform beam failure detection is included in an SCG deactivation command transmitted from the previous base station apparatus, and the terminal apparatus determines whether to perform beam failure detection based on a determination of whether to perform beam failure detection.