Network Exposure Telemetry Handover Across Cellular Core Networks
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Solution Overview
Problem
Existing systems fail to provide continuous telemetry information for IoT devices when they move out of the coverage of their home network and connect to a visited network, leading to a loss of connection and inability to monitor signal strength, quality, and congestion.
Innovation Solution
Implementing an exposure function device in the core network that subscribes to telemetry notifications from both the home and visited networks, allowing it to report this information to an application server, even when the IoT device moves across networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the system relies solely on the home network to provide telemetry information, then the system complexity is low, but the reliability of continuous monitoring is lost when the device moves to a visited network
Solution Approach 1:
The patent introduces a home network exposure function as an intermediary that coordinates between the home network and visited network. This exposure function subscribes to telemetry information from both networks and manages the reporting mechanism, allowing seamless continuity without direct complex interactions between all network elements. The intermediary handles the complexity of multi-network coordination while presenting a simplified interface to the application server.
Solution Approach 2:
The exposure function is designed with multi-functionality to handle both home network and visited network telemetry subscriptions. It can dynamically subscribe to telemetry information from different networks based on device location, making a single system component serve multiple purposes across different network contexts, thereby improving reliability without proportionally increasing overall system complexity.
2Measurement precision
If the system subscribes to telemetry information from both home and visited networks, then the measurement precision and continuity of telemetry data is improved, but the device complexity and information management burden increases
Solution Approach 1:
The patent extracts the complexity of managing multiple telemetry subscriptions from the application server and concentrates it in the home network exposure function. The exposure function handles all subscription management, data collection from both networks, and reporting logic, while the application server simply receives processed telemetry information. This extraction of complexity to a dedicated management component improves measurement precision without burdening the application layer.
Solution Approach 2:
The system implements feedback mechanisms where the exposure function continuously monitors device location and network status, dynamically adjusting subscriptions based on whether the device is in home or visited network. This feedback-driven approach ensures accurate telemetry collection from the appropriate network sources while automatically managing the complexity of multi-network coordination without manual intervention.
3Adaptability or versatility
If the system maintains connections with multiple networks simultaneously, then the adaptability to device mobility is improved, but the loss of information occurs when proper subscription management is not implemented
Solution Approach 1:
The patent implements preliminary action by having the home network exposure function proactively subscribe to visited network telemetry information before the device actually moves to the visited network. When the device is still in the home network, the exposure function establishes subscriptions with both home and visited networks in advance, ensuring that telemetry data collection continues seamlessly without interruption or information loss during the transition.
Data Source
AI summary
A device may include a processor configured to receive an indication from a subscriber management device that a user equipment (UE) device has attached to a second core network, wherein the device is in a core network associated with a Radio Access Network. The processor may be configured to subscribe with a second network exposure device in the second core network to receive telemetry information notifications for the UE device, in response to receiving the indication; receive a telemetry information notification for the UE device from the second network exposure device; and report telemetry information obtained from the received telemetry information notification to a server device associated with the UE device.