Terminal Apparatus Measurement Configuration for Deactivated Cell Groups
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Solution Overview
Problem
In dual connectivity technology for 5G NR, terminal apparatuses face high power consumption due to constant monitoring of multiple cell groups for low-latency data communication, leading to inefficiencies in communication control.
Innovation Solution
Implementing a measurement configuration in RRC messages that distinguishes between activated and deactivated secondary cell groups, allowing for relaxed measurement requirements when secondary cell groups are deactivated, thereby reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal apparatus constantly monitors multiple cell groups to enable low-latency data communication, then communication reliability is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic monitoring adjustment where the terminal apparatus changes its monitoring behavior based on the activation state of cell groups. When a cell group is deactivated, the terminal stops or reduces monitoring in that group, and when activated, monitoring is resumed. This dynamic adaptation resolves the contradiction by making monitoring intensity variable rather than constant, maintaining reliability when needed while reducing power consumption during deactivated periods.
Solution Approach 2:
The patent changes the monitoring parameter (monitoring frequency/intensity) based on the activation state of cell groups. The terminal apparatus adjusts monitoring parameters dynamically - full monitoring when cell groups are activated, and reduced or stopped monitoring when deactivated. This parameter change strategy allows the system to maintain communication reliability during active periods while significantly reducing power consumption during deactivated periods.
2Speed
If the terminal apparatus performs processing necessary for prompt communication activation in deactivated state, then communication speed is improved, but device complexity increases
Solution Approach 1:
The patent applies preliminary action by having the terminal apparatus perform necessary processing during the deactivated state so that when the cell group becomes activated, communication can resume promptly. The terminal maintains measurement configurations and other necessary data in advance, allowing rapid activation without full reconfiguration. This resolves the contradiction by preparing ahead of time, reducing the complexity of activation moment operations while maintaining fast activation speed.
Data Source
AI summary
A terminal apparatus for communicating with a base station apparatus by using a second cell group including a PSCell considers a measurement object including first information as a first measurement object group, considers a measurement object not including the first information as a second measurement object group, and based on the second cell group being in a deactivated state, does not measure the first measurement object group or measures the first measurement object group in accordance with a relaxed requirement.