Network Slice Replacement in 5G Communication Systems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current 5G mobile communication systems face challenges in efficiently managing and replacing network slices, particularly during UE registration or PDU session establishment procedures, which can lead to issues such as congestion and performance deterioration.
Innovation Solution
A method and device for replacing or changing a network slice in a communication system, initiated from an application function (AF), involving the transmission of messages between AF, policy control functions (PCFs), and access and mobility management function (AMF) to determine and implement network slice replacement for UEs or PDU sessions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If network slice replacement is performed during UE registration or PDU session establishment procedures, then network slice management flexibility is improved, but system congestion and processing complexity increase
Solution Approach 1:
The system performs network slice replacement decisions in advance during UE registration or PDU session establishment procedures, before actual data transmission begins. The AMF determines the target network slice and prepares the replacement configuration proactively, avoiding last-minute decision-making during active sessions, thus reducing real-time processing complexity while maintaining management flexibility
2Reliability
If network slice replacement is performed during active sessions, then service continuity is improved, but system congestion increases
Solution Approach 1:
The patent implements network slice replacement during idle periods such as UE registration or PDU session establishment, rather than during active data transmission. This preliminary action approach allows the system to prepare and execute slice changes when processing load is lower, avoiding congestion during peak activity periods while ensuring service continuity is maintained through proper session management
Data Source
AI summary
A method and a device are provided for replacing/changing a network slice in a communication system. A method performed by a network entity in a wireless communication system supporting network slices includes receiving, from an AF, a first message including first information associated with a network slice replacement, and transmitting, based on the first information, to one or more PCFs, a second message including second information associated with the network slice replacement.