Network Slice Selection Device for Service Request Routing
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Solution Overview
Problem
Current network systems lack effective technologies for selecting an appropriate processing server suitable for service requests from terminals, which hinders efficient service processing.
Innovation Solution
A communication control method utilizing a slice selection device that retains slice correspondence information to select an appropriate processing server based on service requests, ensuring that the selected server performs the necessary processing or transfers the request to a suitable target server.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a default processing server or a processing server with an established session is selected to handle service requests, then the system can process requests without requiring sophisticated selection mechanisms, but the service processing efficiency and appropriateness deteriorate because the selected server may not be suitable for the specific service requirements
Solution Approach 1:
The patent introduces a slice selection device as an intermediary component that receives service requests, determines appropriate network slices based on service requirements, and redirects requests to suitable processing servers. This mediator resolves the contradiction by adding a dedicated selection mechanism that improves service matching without requiring complex modifications to the processing servers themselves.
Solution Approach 2:
The patent segments the network into multiple virtual network slices, each optimized for specific service types or requirements. By dividing the monolithic network infrastructure into specialized segments, the system can route different service requests to appropriate slices and their associated processing servers, thereby improving service processing efficiency while maintaining manageable complexity through modular organization.
2Adaptability or versatility
If network slices are virtually divided to provide independent virtual networks for different services, then service-specific request conditions can be satisfied more easily, but the system complexity increases due to the need for slice management and selection mechanisms
Solution Approach 1:
The slice selection device serves as an intermediary that manages slice selection logic centrally. It receives service requests, determines the appropriate network slice based on service requirements, and directs traffic accordingly. This centralized mediation approach enables flexible slice management and high adaptability to different service conditions without distributing complexity across multiple nodes.
Solution Approach 2:
The slice selection device performs multiple functions including slice identification, service requirement analysis, and request routing. By consolidating these diverse functions into a single multi-functional component, the system achieves high adaptability to various service conditions while avoiding the complexity of having separate specialized components for each function.
3Reliability
If processing servers are associated with specific slices to optimize service handling, then service processing appropriateness improves, but the complexity of managing associations and redirects increases
Solution Approach 1:
The slice selection device acts as an intermediary that manages the associations between slices and processing servers centrally. It maintains knowledge of which processing servers are associated with which slices and handles the redirection logic. This centralization improves service processing appropriateness by ensuring requests reach the right servers while managing association complexity in a single location rather than distributing it across multiple servers.
Data Source
AI summary
An NSSF (69) includes: a selection unit selecting a slice corresponding to a service related to a request from a terminal (10) and a target processing server corresponding to the slice based on slice correspondence information including information where a slice, a processing server corresponding to the slice, and a service used by a terminal are associated with one another; and a notification unit notifying an AMF (30) of selection result including information regarding the slice and target processing server. The AMF includes: a determination processing unit determining whether the AMF is a target processing server based on information on the target processing server in the selection result information, and performing processing for a service when the AMF is the target processing server, or transferring a request for processing for a service to the target processing server when the AMF is not the target processing server.