Base Station Reconfiguration for 5G Server Address Mobility

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Solution Overview

Problem

The frequent changes in destination IP addresses of application servers in 5G networks due to edge computing technologies and edge services complicate real-time data service provision, leading to potential service quality deterioration.

Innovation Solution

A base station device and method that includes a change determining unit to monitor and determine server address changes, and an information transferring unit to promptly transfer updated address information to user equipment (UE) via user plane reconfiguration, ensuring seamless traffic transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If edge computing technologies are deployed to provide low latency services, then service quality and responsiveness are improved, but destination IP addresses change frequently causing service disruption

Engineering Contradiction:
Improveservice responsivenessVSAvoidservice continuity
Core Design Contradiction:
SpeedVSReliability

Solution Approach 1:

The base station continuously monitors destination IP addresses associated with data services and receives notifications about IP changes from the control plane. This feedback mechanism enables the system to detect IP changes in real-time and trigger appropriate responses to maintain service continuity.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

When an IP change is detected, the base station proactively transfers updated address information to the UE before service disruption occurs. This preliminary action ensures that the UE can immediately update its routing information and maintain continuous data service without interruption.

Inventive Principle:
Principle #10Preliminary action

2Adaptability or versatility

If destination IP addresses are frequently updated to support server mobility, then adaptability is improved, but service quality deteriorates due to lack of real-time update mechanisms

Engineering Contradiction:
Improveserver mobilityVSAvoidservice quality
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The system implements a feedback loop where the base station receives notifications about IP changes from the control plane and monitors destination IPs associated with active data services. This ensures real-time awareness of server mobility events.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The base station acts as an intermediary between the control plane and the UE. It receives IP change notifications from the control plane, processes this information, and transfers updated address information to the UE, ensuring seamless service continuation despite server mobility.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Device complexity

If address information is not promptly transferred to UE, then network complexity is reduced, but service continuity is broken when server addresses change

Engineering Contradiction:
Improvenetwork complexityVSAvoidservice continuity
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The base station implements monitoring of destination IP addresses and receives notifications from the control plane about IP changes. This feedback mechanism ensures that the base station is immediately aware of address changes and can trigger prompt transfer of updated information to maintain service continuity.

Inventive Principle:
Principle #23Feedback

Data Source

PatentEP4161207B1Base station device and method for operating base station device
Publication Date: 2026.02.18 SK TELECOM CO LTD
  • EP4161207B1 patent drawingFigure 1
  • EP4161207B1 patent drawingFigure 2
  • EP4161207B1 patent drawingFigure 3

AI summary

The present disclosure is to implement a technique (scheme) of guaranteeing the mobility of an application server that enables a user equipment (UE) to seamlessly use a data service in real time even when the application server is changed.