UPF Edge Service Search for Low-Latency 5G Session Selection
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Solution Overview
Problem
Current 5G communication systems lack a specific scheme for enabling the user plane function (UPF) to determine and search for an edge service applicable to a terminal, hindering the control node's ability to select an appropriate edge service for low-latency data processing.
Innovation Solution
A network device and method that enables the UPF to search for an edge service by receiving a request from a control node, performing signaling with edge nodes to obtain service information, and returning a search result to the control node through a service-based interface, allowing the control plane to select an edge service for data sessions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the UPF is expected to provide edge services without a specific search scheme, then the network structure can remain simple, but the UPF cannot determine what edge service to provide thereby
Solution Approach 1:
The patent introduces a service search unit as an intermediary component within the UPF that mediates between the control node's service selection requirements and the available edge services. This unit receives search requests from control nodes, autonomously searches for suitable edge services based on subscriber data characteristics, and returns search results, thereby enabling edge service provision without requiring complex external coordination mechanisms.
2Productivity
If the SMF searches for edge services manually, then service selection can be performed, but the control node cannot efficiently search for/select an edge service to be applied to the terminal
Solution Approach 1:
The patent implements a self-service mechanism where the UPF's service search unit autonomously performs edge service searches based on requests from control nodes. The search unit independently accesses service information, evaluates suitability based on subscriber data characteristics, and returns results without requiring manual intervention or complex operational procedures from control node operators, thereby improving selection efficiency while maintaining ease of operation.
3Loss of time
If no service search mechanism is implemented, then the network structure remains simple, but low-latency service requirements cannot be met
Solution Approach 1:
The patent implements preliminary action by having the service search unit pre-search and identify suitable edge services based on subscriber data characteristics before actual data transmission occurs. The control node can then quickly select from pre-identified services, significantly reducing service selection time and meeting low-latency requirements while keeping the search mechanism integrated within the existing UPF structure to minimize added complexity.
Data Source
AI summary
The present disclosure proposes a novel solution (technology) for achieving a service environment in which an edge service applicable to a subscriber in a control plane (control node) can be searched for and selected by searching for the edge service in UPF in response to a request of the control plane (control node).