Dynamic Slice Assignment for Tracking Area Adaptation
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Solution Overview
Problem
Existing methods struggle to dynamically reassign virtual network slices to services when the service usage conditions, such as tracking areas, change.
Innovation Solution
A slice assignment method that involves acquiring correspondence information associating services with their assigned slices and tracking areas, identifying the presence-in-area status of terminals, and dynamically reassigning slices based on this information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a slice is uniquely assigned to a service, then service requirements can be easily satisfied, but the slice assignment cannot be dynamically changed when service usage conditions change
Solution Approach 1:
The patent implements dynamic slice assignment by introducing a slice assignment management device that continuously monitors service usage conditions and automatically reassigns slices based on current requirements. The system transitions from static unique assignment to dynamic reassignment, allowing slices to be reallocated when service conditions change, thereby improving adaptability while maintaining manageable complexity through automated management.
Solution Approach 2:
The patent employs feedback mechanisms where the slice assignment management device receives service usage condition information, evaluates current slice assignments, and makes reassignment decisions based on this feedback. This closed-loop control enables the system to adapt to changing service requirements while maintaining optimal slice allocation, resolving the contradiction between adaptability and management complexity.
2Reliability
If slice assignment is changed dynamically, then service requirements can be constantly satisfied, but signaling process complexity increases
Solution Approach 1:
The patent introduces a slice assignment management device as an intermediary that handles all slice assignment and reassignment operations. This centralized mediator simplifies the signaling process by consolidating control logic in one entity, reducing the complexity distributed across multiple network elements while ensuring service requirements are constantly satisfied through dynamic adaptation.
Solution Approach 2:
The system performs preliminary evaluation of service usage conditions before initiating slice reassignment. By pre-assessing whether reassignment is necessary and planning the allocation changes in advance, the system reduces impulsive signaling and optimizes the timing of assignment changes, thereby maintaining high reliability while controlling signaling complexity.
Data Source
AI summary
In a slice management device 10, a storage request accepting unit 11 acquires correspondence information in which a service, a slice, and tracking areas are associated with each other. A presence-in-area identifying unit 13 identifies a presence-in-area status of a UE 130. An assignment unit 14 assigns a slice corresponding to a service used by the UE 130 and tracking areas represented by the correspondence information. In this case, the slice management device 10 assigns a slice to a service in accordance with the presence-in-area status of the UE 130, and accordingly, a slice assigned to the service can be dynamically changed.