Passive IoT Network Element Routing via AMF Mapping
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Solution Overview
Problem
In passive Internet of Things (IoT) services, servers face challenges in selecting appropriate network elements for communication with passive terminal devices due to the difficulty in obtaining information about core network elements, leading to communication failures.
Innovation Solution
A method for determining a device management network element by utilizing operation messages to identify suitable network elements based on mapping relationships between identifiers and location information, enabling reliable communication between network elements and passive terminal devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the server/AF directly sends downlink data to the core network without triggering AMF selection, then the communication process is simplified, but the server/AF cannot communicate with the passive terminal device because it cannot obtain core network element information
Solution Approach 1:
The patent introduces a first network element as an intermediary between the second network element (server/AF) and the first device management network element (AMF). This intermediary receives the operation message from the server, determines the appropriate AMF using mapping relationship sets, and forwards the message to the selected AMF, enabling communication without requiring the server to directly select or know about core network elements
Solution Approach 2:
The patent pre-establishes mapping relationship sets that contain mappings between second network element identifiers and first device management network element identifiers, as well as between location information and device management network element identifiers. These pre-configured mappings enable rapid determination of the appropriate AMF without complex real-time selection processes
2Reliability
If the server/AF obtains detailed information about core network elements to enable proper selection, then communication reliability improves, but the system complexity and information requirements increase significantly
Solution Approach 1:
The patent extracts only the essential identifier information needed for AMF selection from the complex core network element data structure. Instead of requiring the server to obtain and process complete core network element information, the system uses concise mapping relationship sets that contain only the necessary identifier mappings and location information
Solution Approach 2:
The first network element acts as an intermediary that handles the complexity of core network element information management. It maintains the mapping relationship sets and performs the determination process, shielding the server from the complexity while ensuring reliable communication
Data Source
AI summary
This application provides a device management network element determining method and a communication apparatus. The method includes: A first network element receives an operation message from a second network element, where the operation message is used to perform an operation on a target terminal, and the target terminal is a device corresponding to a first passive internet of things service. The first network element obtains an identifier of a first device management network element based on the operation message, where the first device management network element is configured to provide a service for the target terminal. The first network element sends the operation message to the first device management network element. In this method communication transmission can be performed between the second network element and the passive terminal device.