5G Data Forwarding via AMF-Selected SMF and UPF
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Solution Overview
Problem
In 5G networks, the existing data transmission methods consume significant resources due to the large number of interactions between User Equipment (UE), the radio network, and the core network, leading to inefficient radio resource consumption and high resource utilization.
Innovation Solution
A data transmission method that determines whether a Protocol Data Unit (PDU) session is established for the User Equipment (UE) and selects the appropriate Session Management Function (SMF) and User Plane Function (UPF) using different selection assistance information, allowing for direct forwarding of data without waiting for the PDU session to be established, thereby reducing interactions and resource consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE waits for PDU session establishment before data transmission, then the data transmission reliability is improved, but the transmission delay and resource consumption increase
Solution Approach 1:
The network performs preliminary actions by pre-establishing the user plane path and selecting UPF before actual data transmission. The AMF determines the SMF and selects UPF in advance based on subscription information and network policies, so that when data arrives, the transmission path is already ready, eliminating the need to wait for PDU session establishment
Solution Approach 2:
The patent segments the session establishment process into separate phases: control plane setup and user plane setup. The control plane can be established independently while the user plane is prepared in parallel. This allows data transmission to proceed once the user plane is ready, without waiting for complete PDU session establishment, thereby reducing delay while maintaining reliability
2Reliability
If the network establishes PDU session before data transmission, then the data transmission reliability is improved, but the resource consumption increases
Solution Approach 1:
The network performs only the necessary partial actions required for data transmission - specifically establishing the user plane path and selecting UPF - without completing the full PDU session establishment process. This partial action approach reduces signaling overhead and radio resource consumption while still enabling reliable data transmission
Solution Approach 2:
The network performs preliminary user plane setup including UPF selection and path establishment before actual data transmission. This preliminary action prepares the data path in advance using efficient signaling, reducing the need for extensive signaling during actual transmission and thereby reducing overall resource consumption
3Reliability
If the network waits for PDU session establishment, then the data transmission reliability is improved, but the interaction complexity increases
Solution Approach 1:
The patent segments the complex PDU session establishment into independent modules: control plane establishment, user plane setup, and data transmission. Each module can be executed independently and in parallel where possible. The AMF handles user plane setup separately from the complete session establishment, reducing the complexity of interactions required before data can be transmitted
Data Source
AI summary
A data transmission method, apparatus, device, and a computer-readable storage medium are provided. The data transmission method of the present disclosure includes receiving data sent by a User Equipment UE, determining a Session Management Function SMF, and forwarding the data to the SMF, wherein after the SMF receives the data, the SMF forwards the data to a User Plane Function UPF.