5G Short Message Routing via AMF and SMF
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Solution Overview
Problem
In 5G networks, there is a need to implement non-access stratum (NAS) short message transmission efficiently, as existing methods do not effectively address how to transmit short messages within the new architecture.
Innovation Solution
A method where a communications device, such as an Access and Mobility Management Function (AMF) device, receives uplink data and indication information from a terminal device, determines the identification information for a Session Management Function (SMF) device capable of processing short messages, and sends the data to the SMF for processing, allowing for registration and routing of short messages within the next-generation mobile network architecture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If short message transmission is implemented in 5G network architecture, then short message service capability is provided, but network architecture complexity increases due to new interface requirements
Solution Approach 1:
The N10 interface is designed to support both user plane data transmission and control plane signaling transmission between AMF and SMF devices. This multi-functional interface eliminates the need for separate dedicated interfaces, reducing network architecture complexity while providing comprehensive short message service capability in 5G networks
Solution Approach 2:
The patent enables dynamic routing of short messages through the N10 interface based on real-time network conditions and service requirements. The interface allows flexible allocation of resources between user plane and control plane functions, adapting to varying message transmission demands without requiring static dedicated paths
2Measurement precision
If user context storage is maintained in core network, then short message routing accuracy is improved, but network storage load increases
Solution Approach 1:
The patent extracts and removes user context information from core network storage after it has been used for short message routing. The AMF device utilizes the context information to accurately route short messages to the appropriate SMF device, then extracts this information to reduce ongoing storage requirements in the core network
Solution Approach 2:
The system performs preliminary retrieval of user context information from storage before short message routing operations. This allows the core network to maintain minimal permanent storage while still achieving accurate routing by temporarily accessing context data when needed, then removing it afterward
Data Source
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AI summary
This application relates to the field of wireless communications technologies, and provides a short message transmission method. The method includes: receiving, by a communications device, uplink data and indication information used to indicate that the uplink data belongs to a short message service; determining identification information used to identify a short message function entity device that processes the short message service; and sending the uplink data to the short message function entity based on the indication information and the identification information; or includes: receiving, by a communications device from a terminal device, uplink data and a session identifier that is used to identify a session for processing the short message service; determining identification information associated with the session identifier; and sending the uplink data to the short message function entity based on the identification information. According to the solutions provided in the embodiments, short message transmission can be implemented in a next-generation mobile network architecture.