Exposure Function for MTC Device Group Membership Management
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Solution Overview
Problem
Current cellular networks lack an efficient and cost-effective mechanism for managing membership in groups of Machine-Type Communication (MTC) devices, particularly in scenarios where frequent changes occur, such as in smart metering and car hiring services.
Innovation Solution
A method and apparatus that utilize an Exposure Function (EF) and a user profile server to manage MTC device membership through authentication and authorization, allowing MTC providers to autonomously manage their devices within the 3GPP 4G/5G core network architecture, using a provisioning function to add, remove, or move devices between groups.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional cellular network mechanisms are used for MTC device management, then network infrastructure is maintained, but management efficiency and cost-effectiveness deteriorate due to lack of specialized mechanisms for frequent membership changes
Solution Approach 1:
The patent introduces an Exposure Function (EF) as an intermediary component between MTC applications and the core network. This EF enables applications to manage device membership without directly accessing complex network resources, thereby improving management efficiency while hiding network complexity from application developers.
Solution Approach 2:
The patent segments the network management function into separate components: an Exposure Function for application interaction, a User Profile Server for authorization, and a Provisioning Function for actual device management. This segmentation allows each component to handle specific tasks efficiently, improving overall system productivity.
2Adaptability or versatility
If autonomous management capability is provided to MTC providers, then management flexibility and monetization improve, but security and authorization complexity increase
Solution Approach 1:
The patent implements preliminary authorization where the User Profile Server pre-determines which applications are allowed to manage which device groups before actual management operations occur. This preliminary security check enables flexible autonomous management while maintaining strong authorization controls.
Solution Approach 2:
The system incorporates feedback mechanisms where the Exposure Function receives authorization decisions from the User Profile Server and enforces them during device management operations. This feedback loop ensures that flexible management operations are constrained by security policies, maintaining reliability.
3Adaptability or versatility
If dynamic membership management is enabled for MTC groups, then adaptability to changing requirements improves, but network resource consumption and cost increase
Solution Approach 1:
The patent enables MTC applications to perform self-service management of device membership through the Exposure Function. Applications can autonomously add, remove, or move devices without requiring manual network intervention, reducing network resource consumption while maintaining high adaptability to changing business requirements.
Solution Approach 2:
The system efficiently handles dynamic membership by changing state parameters in the network database rather than creating new network connections for each change. This parameter-based approach allows flexible membership management with minimal network resource consumption.
Data Source
AI summary
A method, apparatus and computer program product for managing one or more groups of Machine-Type Communication (MTC) devices in a cellular network. According to one aspect, a method for managing one or more groups of Machine-Type Communication (MTC) devices in a cellular network includes an exposure function for exposing network capabilities and events detected by other network functions, characterized by the following steps carried out at the exposure function: —a) receiving, from an MTC application, a request for membership management on the one or more MTC groups, wherein the request includes corresponding one or more MTC group identifiers and an MTC device identifier for the MTC application; and —b) transmitting, towards a user profile server, a corresponding request for membership management, wherein the corresponding request includes the one or more MTC group identifiers, the MTC device identifier and a corresponding MTC application identifier.