User Plane Positioning Requests to Cut AMF Forwarding Delays
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing positioning service response duration is excessively long due to the AMF network element's inability to forward data packets in time, leading to potential service interruptions.
Innovation Solution
Implementing user plane positioning by allowing the location management network element to interact directly with the terminal device through a PDU session, bypassing the control plane transmission path typically handled by the AMF.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the AMF network element forwards positioning service data packets through the control plane transmission path, then the positioning service can be provided, but the response duration becomes excessively long due to the AMF network element's inability to forward data packets in time
Solution Approach 1:
The patent extracts the positioning service data transmission function from the control plane (AMF network element) and creates a separate user plane transmission path. The LMF network element directly interacts with the terminal device through the user plane, bypassing the AMF network element for data packet forwarding. This separation allows the control plane to maintain reliability for service availability while the user plane provides fast response for data transmission.
Solution Approach 2:
The patent introduces the user plane as an intermediary transmission path between the LMF network element and the terminal device. Instead of the AMF network element directly forwarding all positioning data packets, the user plane acts as a dedicated mediator for positioning service data, enabling direct and efficient communication while maintaining the control plane's management functions.
2Adaptability or versatility
If the AMF network element processes a large quantity of services, then comprehensive service management is achieved, but the positioning service data packet forwarding is delayed
Solution Approach 1:
The patent segments the service processing functions by separating control plane management (handled by AMF) from user plane data transmission (handled by LMF and terminal device). The AMF network element maintains its comprehensive service management role while the positioning service data transmission is segmented into a dedicated user plane path, allowing parallel processing without interference.
Solution Approach 2:
The patent adds a new dimension to the transmission architecture by introducing the user plane as a parallel transmission path alongside the control plane. This dimensional addition allows positioning service data to traverse a separate route (LMF-UPF-terminal device) that does not compete with the AMF's service processing queue, thereby maintaining high forwarding speed independent of overall service load.
Data Source
AI summary
The present disclosure relates to positioning request processing methods, devices, and systems In one example method, a mobility management network element receives a request message, and sends a first message to a location management network element based on the request message, where the first message is used to trigger the location management network element to obtain location information of a first terminal device through user plane positioning. After receiving the first message, the location management network element sends a second message to the first terminal device based on the first message by using a protocol data unit (PDU) session of the first terminal device, where the second message indicates the first terminal device to report positioning data.