Network Slice Registration with Standby Fallback
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Solution Overview
Problem
In 5G mobile communication, when a network slice cannot serve a UE due to issues like network overload or policy limitations, the conventional method of transmitting a batch rejection message hinders efficient communication, lacking consideration for the terminal's position, requested service, or user preferences, thereby reducing flexibility in providing 5G services.
Innovation Solution
A method where a UE performs communication related to a network slice by transmitting a registration request message with information on the desired network slice, receiving a registration accept message with information on a standby network slice, and displaying information indicating access to the standby network slice, allowing for flexible service provision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the network transmits a batch rejection message to the terminal when the network slice cannot serve the terminal, then the network management is simplified, but the communication efficiency is reduced and service flexibility is lost
Solution Approach 1:
The patent segments the rejection message into two parts: a common cause value applicable to all terminals, and terminal-specific information including individual back-off timer values. This segmentation allows the network to manage rejection messages efficiently while providing customized timing control for each terminal, thereby maintaining both simplified network management and high communication efficiency.
Solution Approach 2:
The patent applies local quality by assigning different back-off timer values to different terminals based on their specific situations, positions, and service requirements. Instead of using a uniform rejection approach, the network can set customized timer values for each terminal, enabling localized optimization of communication efficiency and service flexibility while maintaining overall system manageability.
2Device complexity
If the network unconditionally transmits a rejection message to the terminal when a network slice is unavailable, then the network slice management is simplified, but the service provision flexibility is reduced
Solution Approach 1:
The patent introduces dynamic back-off timer values that can be adjusted based on terminal-specific conditions, service types, and network slice availability. This dynamic approach allows the network to adaptively control terminal reconnection timing, providing service provision flexibility while maintaining simplified network slice management through a standardized rejection message framework.
Solution Approach 2:
The patent changes the parameter of back-off timer value from a fixed uniform value to a variable terminal-specific value. This parameter change enables the network to flexibly adjust rejection timing for different terminals based on their situations, positions, and service requirements, thereby enhancing service provision flexibility without complicating network slice management.
3Device complexity
If only a rejection message is transmitted to the terminal when the network slice cannot serve, then the network communication protocol is simplified, but the user experience and service continuity are degraded
Solution Approach 1:
The patent implements preliminary action by providing terminals with customized back-off timer values in advance through the rejection message. This allows terminals to proactively schedule their reconnection attempts according to terminal-specific timing, improving service continuity and user experience while maintaining a relatively simple communication protocol structure.
Data Source
AI summary
One disclosure of the present specification provides a method by which UE performs communication related to a network slice. The method may comprise steps in which: a registration request message including information about a network slice which the UE wants to access is transmitted to a network node; a registration acceptance message including information about a standby network slice is received; and information notifying that the standby network slice has been accessed is displayed on the display of the UE on the basis of the information about the standby network slice.