Dynamic Network Slice Selection via AMF-PC_NSS Coordination
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Solution Overview
Problem
Current network slice selection mechanisms in telecommunications networks are inflexible and lack the ability to dynamically allocate UEs to different slices based on changing conditions, leading to static and poorly scalable solutions that cannot adapt to real-time service delivery requirements.
Innovation Solution
Implementing a network node, such as the Access and Mobility Management Function (AMF), which interacts with a Policy Control Network Slice Selection function (PC_NSS) to dynamically select and assign network slices based on up-to-date parameters, load conditions, and business purposes, using Network Slice Routing Rules (NSRR) to manage network slice assignments and reselections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If static network slice selection mechanisms are used, then implementation simplicity is maintained, but adaptability to changing conditions deteriorates
Solution Approach 1:
The patent implements dynamic network slice selection by enabling the network slice selector to receive updated selection data and re-evaluate network slice assignments in real-time based on changing conditions. The system transitions from static pre-configured selection to dynamic re-evaluation, allowing network slices to be reassigned based on current network state, service requirements, and resource availability.
Solution Approach 2:
The patent establishes a feedback mechanism where the network slice selector receives selection data that includes information about network slice performance, resource utilization, and service quality. This feedback loop enables continuous optimization of network slice assignments by comparing actual performance against selection criteria and making adjustments accordingly.
2Productivity
If dynamic network slice selection is implemented, then service delivery optimization improves, but computational overhead increases
Solution Approach 1:
The patent applies partial action by triggering network slice reselection only when specific events occur or when performance thresholds are breached, rather than continuously re-evaluating all network slices. This event-driven approach reduces unnecessary computational overhead while maintaining service delivery optimization when actually needed.
Solution Approach 2:
The patent optimizes computational resources by dynamically adjusting selection parameters and criteria based on network conditions. The system modifies which parameters are evaluated and at what frequency, reducing computational burden during stable conditions while intensifying evaluation when service quality degradation is detected.
3Reliability
If network slice reselection is performed frequently, then service quality is maintained, but network signaling overhead increases
Solution Approach 1:
The patent implements periodic reevaluation with configurable intervals, allowing network slice selections to be updated at regular intervals rather than continuously. This periodic approach maintains service quality by ensuring timely reselection while reducing signaling overhead by spacing out reevaluation events and avoiding excessive updates during stable periods.
4Measurement precision
If multiple network slice criteria are evaluated, then selection precision improves, but processing complexity increases
Solution Approach 1:
The patent segments the network slice selection process into multiple independent evaluation stages, each assessing specific criteria such as service requirements, network resources, and performance metrics. This segmentation allows complex multi-criteria evaluation to be broken down into manageable components, improving selection accuracy while organizing processing complexity into structured, modular stages.
Data Source
AI summary
Network nodes and methods for control thereof for dynamic network slice selection. An AMF receives a UE request originating from the UE, the UE request being any one of a registration request and a session request. A network slice requester controls a transmitter to transmit a network slice selection request to a PC_NSS. A selection data manager of the PC_NSS determines selection data specifying one or more UE specific parameters affecting network slice selection. A network slice selector selects a network slice assignable for the UE, based on the selection data, determines network slice data and a corresponding network slice routing rule, and transmits them to the AMF. A network slice manager of the AMF controls assignment of a network slice to the UE in dependence on the received network slice data and network slice routing rule.