Automatic Path Selection for Roaming IoT Devices
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Solution Overview
Problem
Current roaming solutions for IoT devices face challenges in managing connectivity and configuration differences between home and roaming networks, leading to increased complexity, lower quality of service, and higher operational overhead for carriers due to static and lengthy roaming agreements.
Innovation Solution
Configuring user devices with a preferred path setup profile to attach to available communication paths in roaming networks, with the home network performing path detection to identify the best path and selecting an alternate path if the primary path experiences poor quality or delivery failure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If static roaming agreements are used between home and roaming networks, then connectivity can be established, but device complexity and operational overhead increase
Solution Approach 1:
The roaming device autonomously performs path detection and selects the optimal communication path without requiring complex pre-configured roaming agreements. The device independently queries available paths, evaluates them based on criteria such as data delivery reliability, and automatically switches paths when needed, eliminating the need for service provider intervention and reducing operational overhead.
Solution Approach 2:
The system dynamically adapts the communication path based on real-time network conditions rather than relying on static pre-configuration. The device continuously monitors path quality metrics and automatically switches between available paths (e.g., from non-IP to IP-based paths) to maintain optimal connectivity, making the roaming solution flexible and adaptive to changing network environments.
2Reliability
If multiple communication paths are maintained for roaming devices, then data delivery reliability improves, but operational overhead increases
Solution Approach 1:
The system implements a feedback mechanism where the roaming device monitors the quality and reliability of the current communication path in real-time. When degradation is detected (such as poor data delivery reliability on a non-IP path), the device automatically triggers path re-evaluation and switches to an alternative path (such as an IP-based path), ensuring continuous reliable operation without requiring manual intervention.
Solution Approach 2:
The automatic path selection and switching mechanism enables the roaming device to self-manage its connectivity without requiring service provider operations teams to monitor and manage multiple paths manually. The device independently evaluates available paths, selects the optimal one, and performs automatic switching when needed, significantly reducing operational overhead while maintaining multiple path options for reliability.
3Reliability
If path detection and automatic switching is implemented, then quality of service improves, but device complexity increases
Solution Approach 1:
The path detection and selection functionality is implemented as a self-service mechanism within the roaming device, using standardized protocols and procedures that leverage existing device capabilities. The device autonomously performs path queries, evaluates available paths using predefined criteria, and executes path switching without requiring complex external management systems, thereby improving quality of service while minimizing the increase in device complexity.
Solution Approach 2:
The path management mechanism is designed to be universal and multi-functional, working across different network types (non-IP and IP-based networks) and different roaming scenarios using a single unified approach. The same path detection and selection logic applies regardless of the specific network technology or roaming partner, reducing the need for technology-specific implementations and minimizing overall device complexity.
Data Source
AI summary
A user device may be provisioned with a list of paths for connecting to a network. A method may include determining that the user device has attached to a visited network and sending the visited network an indication of connectivity capabilities associated with the network. The method may include receiving an indication of one or more paths established from the visited network to the network based on capabilities of the visited network. The one or more paths may be included in the list of paths. The method may include transmitting data to or from the user device via a first path of the one or more paths.