UE Slice Registration Using S-NSSAI-Specific TA Lists
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is no clear implementation method for network slices in the 5G System (5GS) that are valid only in specific areas and/or times, as studied in the 3GPP's Enhancement of Network Slicing (eNS) phase 3.
Innovation Solution
A User Equipment (UE) includes a controller, transmission and/or reception unit, and storage unit, which receives Single Network Slice Selection Assistance Information (S-NSSAI) and a Tracking Area (TA) list, allowing the controller to replace or add TAs associated with the S-NSSAI in the NSSAI.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If network slices are configured to be valid only in specific areas and/or times, then network resource utilization and service matching are improved, but device complexity and implementation difficulty increase
Solution Approach 1:
The patent segments the TA list into multiple separate TA lists, each associated with a specific S-NSSAI. This segmentation allows the UE to manage area-valid network slices independently for each slice type, reducing the complexity of managing conditional validity across all slices simultaneously while maintaining high adaptability.
Solution Approach 2:
The patent implements dynamic TA list management where the UE can replace or update TA lists associated with specific S-NSSAIs based on current network conditions and slice validity requirements. This dynamic approach enables the system to adapt to changing area and time conditions without requiring complete reconfiguration, balancing adaptability with manageable complexity.
2Measurement precision
If multiple TA lists are managed for different S-NSSAIs, then network slice selection precision is improved, but information management complexity increases
Solution Approach 1:
The patent performs preliminary association of TA lists with specific S-NSSAIs during configuration phases. By pre-establishing these associations and storing them in the UE's storage unit, the system reduces real-time information management overhead while maintaining precise slice selection capability when needed.
Solution Approach 2:
The patent implements a storage unit that maintains copies of TA lists associated with each S-NSSAI. This copying mechanism allows the UE to efficiently access and manage multiple TA lists without requiring complex real-time synchronization, reducing information management overhead while preserving slice selection precision.
Data Source
AI summary
A communication mechanism for realizing a function related to management of information about network slices or a non-public network function is provided in 5GS. Provided are, in the 5GS, a method and a communication mechanism for procedures of initial registration of a UE and a periodic or mobility-based registration for implementing management of information about network slice or non-public network function. Furthermore, provided are a method and a communication mechanism after completion of the registration procedure and for a UE configuration update procedure. Furthermore, provided is a method for managing information about network slice in association with each procedure and state transition.