Third-Party Application Server Dynamic Traffic Path Management in 5G
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Solution Overview
Problem
Current 5G communication systems lack an efficient method for a third-party application server to dynamically manage and prioritize data traffic paths based on terminal location and user priority, leading to suboptimal service quality and increased latency in congested networks.
Innovation Solution
A method where a third-party application server requests and manages changes to a terminal's data traffic path within the 5G system, prioritizing connections to local data networks based on user priority, using APIs to monitor access types and relocate user plane functions, thereby optimizing service delivery and reducing congestion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a third-party application server requests monitoring of terminal state information changes in the 5G system, then the server can dynamically manage traffic paths based on terminal location, but the system complexity and signaling overhead increase
Solution Approach 1:
The patent introduces a third-party application server as an intermediary entity that acts as a mediator between the terminal and the 5G system core network. This server monitors terminal state information changes and communicates with the network to dynamically manage traffic paths. By placing this intelligence in a separate third-party entity rather than embedding it directly in the core network elements, the system achieves dynamic adaptability while isolating the complexity to a manageable external component.
2Loss of time
If the system dynamically changes traffic paths to local data networks based on terminal location, then latency is reduced and service quality improves, but the control and management complexity increases
Solution Approach 1:
The patent implements preliminary action by having the third-party application server proactively monitor terminal state information and predict when traffic path changes will be beneficial. The server maintains knowledge of terminal locations and network conditions in advance, allowing it to initiate traffic path changes to local data networks before congestion or high latency occurs. This proactive approach reduces latency by pre-positioning traffic flows optimally rather than reactively responding to degradation.
3Productivity
If the system monitors terminal state information changes in real-time, then traffic path optimization is improved, but the signaling overhead and network load increase
Solution Approach 1:
The patent applies partial action by having the third-party application server monitor only the specific terminal state information changes that are relevant for traffic path optimization, rather than monitoring all possible terminal parameters. The server selectively tracks location information and access type changes that directly impact routing decisions, ignoring other terminal states that would not influence traffic path choices. This selective monitoring approach maintains optimization efficiency while minimizing unnecessary signaling overhead.
Data Source
AI summary
The present disclosure relates to a communication technique for converging IoT technology with 5G communication systems for supporting higher data transmission rates than 4G systems and to a system thereof. The present disclosure can be applied to intelligent services (e.g., smart home, smart building, smart city, smart car or connected car, health care, digital education, retail business, security- and safety-related services, etc.) on the basis of 5G communication technology and IoT-related technologies. The method for operating a policy and charging function (PCF) according to one embodiment of the present invention comprises the steps of: receiving a message which is generated by an application function (AF) and requests a change in the traffic route of terminal; checking priority information of the terminal, regarding services provided by the AF, included in the message; and changing the protocol data unit (PDU) session connection of the terminal on the basis of the priority information.


