Suspended Cell Group Activation for Dual Connectivity Latency

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Solution Overview

Problem

In next-generation mobile communication systems, carrier aggregation or dual connectivity technologies face processing latency issues when activated or deactivated, leading to increased battery consumption and data transmission/reception latency.

Innovation Solution

A method is introduced to configure a dormant mode or suspension mode in wireless communication systems, allowing for rapid activation and deactivation of carrier aggregation or dual access technology by operating in units of bandwidth parts, cells, or cell groups, and configuring transmission resources for channel measurement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If carrier aggregation or dual connectivity technology is activated to provide high data transmission rate, then data transmission rate is improved, but processing latency increases and battery consumption increases

Engineering Contradiction:
Improvedata transmission rateVSAvoidprocessing latency
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The patent applies preliminary action by pre-configuring cell groups and maintaining them in a suspended state with pre-established configurations. When activation is needed, the cell group can be quickly activated without full setup procedures, reducing processing latency while maintaining the capability for high data transmission rates when required.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent implements dynamics by introducing a suspendable state that allows cell groups to be dynamically transitioned between active, suspended, and deactivated states. This enables the system to adapt quickly to changing traffic conditions, activating carrier aggregation or dual connectivity only when needed, thus reducing average processing latency and battery consumption while maintaining high data transmission capability when required.

Inventive Principle:
Principle #15Dynamics

2Productivity

If carrier aggregation or dual connectivity technology is activated to provide high data transmission rate, then data transmission rate is improved, but battery consumption increases

Engineering Contradiction:
Improvedata transmission rateVSAvoidbattery consumption
Core Design Contradiction:
ProductivityVSUse of energy by moving object

Solution Approach 1:

The patent applies preliminary action by pre-configuring cell groups with all necessary parameters and maintaining them in a suspended state. When activation is needed, the cell group can be quickly brought online without repeated configuration procedures, reducing the energy expenditure associated with frequent full setup operations while maintaining the capability for high data transmission rates.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent implements dynamics by introducing a suspendable state that allows the system to dynamically adjust power consumption based on traffic demands. Cell groups can be suspended during low-activity periods to reduce battery consumption while remaining easily activatable when high data transmission rates are needed, creating an energy-efficient adaptive system.

Inventive Principle:
Principle #15Dynamics

3Use of energy by moving object

If cell group is deactivated to reduce battery consumption, then battery consumption is reduced, but data transmission/reception latency increases when activated

Engineering Contradiction:
Improvebattery consumptionVSAvoiddata transmission/reception latency
Core Design Contradiction:
Use of energy by moving objectVSLoss of time

Solution Approach 1:

The patent applies preliminary action by maintaining cell groups in a suspended state with pre-established configurations, measurement settings, and parameter sets. When activation is needed, the cell group can be quickly brought online without requiring full reconfiguration, thus reducing activation latency while maintaining power savings from the suspended state during inactive periods.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent implements dynamics by introducing a suspendable state that serves as an intermediate between deactivated and active states. This allows the system to quickly transition from low-power suspended state to active state when traffic is needed, minimizing the latency penalty while maintaining battery savings during low-activity periods.

Inventive Principle:
Principle #15Dynamics

4Productivity

If multiple cells are monitored to maintain carrier aggregation or dual connectivity, then data transmission rate is improved, but battery consumption increases

Engineering Contradiction:
Improvedata transmission rateVSAvoidbattery consumption
Core Design Contradiction:
ProductivityVSUse of energy by moving object

Solution Approach 1:

The patent implements dynamics by allowing dynamic suspension and resumption of cell groups based on traffic conditions. When multiple cells need to be monitored for high data transmission rates, the system can activate the necessary cell groups and suspend others, optimizing the balance between monitoring capability and power consumption.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent applies preliminary action by pre-configuring multiple cell groups with all necessary monitoring parameters and measurement settings. When activation is needed, the pre-configured cell groups can be quickly activated without repeated setup procedures, reducing the energy expenditure associated with frequent configuration operations while maintaining the capability for multi-cell monitoring.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS20250150874A1Method and apparatus for configuring or transmitting RRC message supporting activation or inactivation of cell group in next-generation mobile communication system
Publication Date: 2025.05.08 SAMSUNG ELECTRONICS CO LTD
  • US20250150874A1 patent drawing
  • US20250150874A1 patent drawing
  • US20250150874A1 patent drawing

AI summary

The present disclosure provides a method performed by user equipment in a wireless communication system. The method may comprise the steps of receiving information for measurement configuration; identifying that user equipment has been configured with (NG) EN-DC or NR-DC; identifying that an SRB3 has been configured; identifying whether or not an SCG has been inactivated; and if the SRB3 has been configured and the SCG has not been inactivated, transmitting a measurement report message via the SRB3.