SA Cell Abnormality Detection via PDU Session Release Status

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Solution Overview

Problem

In densely populated areas, standalone SA cells often struggle to provide simultaneous network services to all users, leading to unsuccessful connections or premature release of network connections.

Innovation Solution

A network connection method that determines the abnormal state of an SA cell based on release status information of a PDU session, and automatically switches the network connection to a target cell if the SA cell is found to be in an abnormal state.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If an SA cell serves multiple users in densely populated areas, then the network capacity is increased, but the connection reliability deteriorates due to resource contention and abnormal states

Engineering Contradiction:

Improvenumber of users servedVSAvoidconnection reliability

Core Design Contradiction:

Quantity of substanceVSReliability

Solution Approach 1:

The terminal monitors PDU session release status information from the SA cell and uses this feedback to determine whether the cell is in an abnormal state. Based on this feedback mechanism, the terminal can identify when the SA cell cannot provide normal service and automatically switch to a target cell, thereby resolving the connection reliability issue while maintaining high user capacity

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system dynamically adjusts the network connection by switching from the SA cell to a target cell when abnormal conditions are detected. This dynamic adaptation allows the system to maintain reliable connections even in densely populated areas where static cell assignments would fail

Inventive Principle:

Principle #15Dynamics

2Reliability

If the terminal continuously monitors SA cell status to ensure connection reliability, then the connection quality is improved, but the power consumption and signaling overhead increase

Engineering Contradiction:

Improveconnection qualityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

Instead of continuously monitoring all possible parameters, the terminal performs partial monitoring by checking only the PDU session release status information. This selective monitoring approach maintains connection quality while minimizing power consumption and signaling overhead

Inventive Principle:

Principle #16Partial or excessive action

3Reliability

If the terminal switches to a target cell when SA cell is abnormal, then the connection success rate is improved, but the network complexity increases

Engineering Contradiction:

Improveconnection success rateVSAvoidnetwork complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The PDU session release status information acts as an intermediary indicator that simplifies the switching decision process. Instead of implementing complex multi-parameter evaluation, the terminal uses this single intermediary signal to trigger the switching mechanism, thereby improving connection success rate while keeping the implementation relatively simple

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS20250168915A1Network connection method, electronic device, readable storage medium, and chip

Publication Date: 2025.05.22 VIVO MOBILE COMM CO LTD

AI summary

This application provides a network connection method, an electronic device, a readable storage medium, and a chip. The network connection method is executed to an electronic device, and the method includes: when the electronic device establishes a network connection to a first Standalone (SA) cell, obtaining release status information of a first Protocol Data Unit (PDU) session; and when it is determined, based on the release status information, that the first SA cell is in an abnormal state, establishing a network connection to a target cell. The first PDU session is a PDU session between the electronic device and the first SA cell. The target cell is a cell other than the first SA cell.