User Plane Location Service Messaging for Wireless Devices
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Solution Overview
Problem
Current MO-LR procedures are control plane based, leading to scalability issues and excessive load on the Access and Mobility Management Function (AMF), which can result in high latency, especially in centralized deployments and emerging use cases like Cooperative Intelligent Transportation Systems (C-ITS).
Innovation Solution
Establishing a user plane connection with a Location Management Function (LMF) to send messages relating to location services, allowing for the initiation of a user plane connection for messages between the User Equipment (UE) and the LMF, thereby bypassing the control plane and reducing latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If control plane based MO-LR procedures are used, then location services can be provided, but scalability is poor and AMF load is excessive
Solution Approach 1:
The patent extracts location service messaging from the control plane to a separate user plane connection between UE and LMF. This separates the location service functionality from the control plane, reducing AMF load and improving scalability while maintaining location service availability through dedicated user plane pathways.
Solution Approach 2:
The patent introduces a user plane connection as an intermediary pathway for location service messages. This intermediary separates the control plane (AMF) from location service operations, allowing parallel processing and reducing the burden on the control plane while maintaining reliable message delivery.
2Reliability
If control plane based MO-LR procedures are used, then location services can be provided, but latency is high
Solution Approach 1:
The patent extracts location service messaging from the control plane to a separate user plane connection. This extraction creates a dedicated pathway for location messages that does not share resources with other control plane traffic, thereby reducing latency while maintaining service availability.
Solution Approach 2:
The patent segments the communication planes by separating control plane (for signaling and management) from user plane (for location service data). This segmentation allows simultaneous operation of control functions and location services with independent timing characteristics, reducing overall latency.
3Device complexity
If centralized AMF deployment is used, then service management is simplified, but latency increases
Solution Approach 1:
The patent introduces a user plane connection as an intermediary that bypasses the centralized AMF for location service messaging. This intermediary pathway allows direct UE-LMF communication for location data while the centralized AMF continues to manage services, achieving low latency without sacrificing management simplicity.
Solution Approach 2:
The patent segments communication into control plane (through centralized AMF for management) and user plane (direct UE-LMF for location services). This segmentation allows the centralized architecture to maintain service management simplicity while the user plane provides low-latency direct pathways for location messaging.
Data Source
AI summary
An example method includes a method performed by a wireless device for sending a message relating to location services. The method includes establishing a user plane connection with a location management function, and sending a message relating to location services to the location management function using the user plane connection.