Network Slice Release Signaling for UE Service Availability
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Solution Overview
Problem
In 3GPP LTE and NR systems, there is a need for a method that allows user equipment (UE) to efficiently receive network slice services when the corresponding network does not provide them, ensuring seamless service provisioning.
Innovation Solution
The AMF is provided with UE information and network slice information from the UDM, enabling it to provide the UE with necessary network slice information, allowing for safe and effective connection release to the network slice.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network does not provide the required network slice service, then service availability is reduced, but implementing network slice selection and fallback mechanisms increases device complexity
Solution Approach 1:
The network side (AMF) acts as an intermediary by providing fallback network slice information to the UE. Instead of the UE independently managing complex network slice selection and fallback logic, the network intermediary supplies the necessary alternative slice information, reducing UE complexity while maintaining service availability through fallback mechanisms
2Adaptability or versatility
If the network provides comprehensive network slice information, then service provisioning flexibility is improved, but information management complexity increases
Solution Approach 1:
The patent extracts and separates the fallback network slice information from the main network slice configuration. The AMF provides specific fallback slice information only when needed, rather than managing all possible network slice configurations continuously. This selective extraction reduces information management complexity while maintaining service provisioning flexibility through targeted fallback support
Data Source
AI summary
One disclosure of the present specification provides a method for performing communication by a user equipment (UE). The method comprises the steps of: receiving, from a network, a first message indicating that connection between the UE and a first network slice used by the UE is released, wherein the first message includes time information about a time when the connection is released; and on the basis of the first message, transmitting, to an application of the UE, a second message indicating that the connection is released. The second message includes the time information, and the UE may drive the application by using the first network slice.