Conditional Secondary Cell Group Addition in 5G Networks

Solution Overview

Problem

In 5G mobile communications systems, the condition-based method for adding a secondary cell group (SCG) requires numerous configuration signaling operations, leading to signaling loss and inefficient use of air-interface resources, making it difficult to add SCG cells immediately and achieve load-balancing between primary and secondary cell groups.

Innovation Solution

A method that involves receiving conditional-addition SCG information from a master node, evaluating target cells to determine if they meet addition conditions, and triggering the addition process based on the evaluation results, allowing for immediate and effective addition of SCG cells, thereby reducing signaling loss and improving resource utilization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If condition-based SCG addition method is adopted, then SCG cells can be added according to network conditions, but a large number of configuration signaling operations are required causing signaling loss and delayed addition

Engineering Contradiction:

ImproveSCG cell addition reliabilityVSAvoidsignaling loss

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The patent applies preliminary action by pre-configuring multiple SCG cells with their addition conditions before actual deployment. The network side device prepares cell configuration information and sets trigger conditions in advance, so when conditions are met, the SCG cell can be added immediately without requiring extensive real-time signaling operations. This reduces signaling loss while maintaining reliable addition based on network conditions.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If condition-based SCG addition method is adopted, then SCG cells can be added based on network evaluation, but the addition process is delayed and cannot achieve immediate effective addition

Engineering Contradiction:

ImproveSCG cell addition reliabilityVSAvoidaddition time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent implements preliminary action by pre-evaluating and pre-configuring multiple SCG cells with their addition conditions. The network side device prepares cell configuration information and trigger conditions in advance, enabling immediate addition when conditions are met without time-consuming real-time evaluation and configuration processes.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent applies feedback by continuously monitoring network conditions and comparing them against pre-set trigger conditions. When conditions are met, the system provides feedback to activate the SCG cell addition process, enabling timely and condition-based deployment while maintaining reliability through continuous condition assessment.

Inventive Principle:

Principle #23Feedback

3Reliability

If condition-based SCG addition method is adopted, then network can control SCG addition conditions, but air-interface resources utilization efficiency is reduced

Engineering Contradiction:

ImproveSCG cell addition reliabilityVSAvoidair-interface resources utilization efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent applies preliminary action by pre-configuring multiple SCG cells with their addition conditions before actual deployment. The network side device prepares cell configuration information and sets trigger conditions in advance, so when conditions are met, the SCG cell can be added immediately without requiring extensive real-time signaling operations. This reduces signaling loss while maintaining reliable addition based on network conditions.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent applies feedback by continuously monitoring network conditions and comparing them against pre-set trigger conditions. When conditions are met, the system provides feedback to activate the SCG cell addition process, enabling timely and condition-based deployment while maintaining reliability through continuous condition assessment.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS11805457B2Method of adding secondary cell group, terminal device, and master node

Publication Date: 2023.10.31 VIVO MOBILE COMM CO LTD

AI summary

A method of adding a secondary cell group, a terminal device, and a main node are provided. The method of adding a secondary cell group includes: receiving conditional-addition SCG information sent by a master node; evaluating, according to the conditional-addition SCG information, whether one or more target cells in an SCG meet a condition corresponding to triggering addition of a target cell, and obtaining a result of the evaluation; triggering, according to the result of the evaluation, a process of adding a SCG target cell.