Primary SIM Device Managing Secondary IoT Device Connectivity
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Solution Overview
Problem
Current methods for managing device connectivity in IoT applications, particularly with increasing numbers of connected devices, are inefficient as they rely on traditional SIM solutions that become less feasible due to scalability issues and lack control over secondary device usage.
Innovation Solution
A method involving a Secure Entitlement Server that distributes SIM-based or non-SIM-based credentials to secondary devices through network signaling, allowing primary SIM devices to control service limitations, usage, and notifications for associated secondary devices, using a one-time-use access token for secure credential retrieval.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional SIM solutions are used for device connectivity management, then device authentication and network access are ensured, but scalability becomes problematic as the number of connected devices increases drastically
Solution Approach 1:
The patent segments the SIM functionality into two distinct parts: a master SIM card that remains in the primary device and maintains the authentic subscription, and multiple secondary credentials (virtual SIMs or access tokens) that can be distributed to secondary devices. This segmentation allows the primary device to authenticate reliably while enabling unlimited secondary devices to access the network without requiring physical SIM cards in each device, thus resolving the contradiction between authentication reliability and scalability.
Solution Approach 2:
The patent creates virtual copies of SIM credentials that can be distributed to multiple secondary devices. Instead of requiring unique physical SIM cards for each device, the system generates software-based credential copies (virtual SIMs, access tokens) that replicate the network access functionality. These copied credentials enable multiple devices to access the network under the master SIM's authorization, solving the scalability problem while maintaining secure authentication through the master SIM.
2Adaptability or versatility
If multiple secondary devices are associated with a single primary SIM device, then connectivity coverage is improved, but control over usage and service limitations is lost
Solution Approach 1:
The patent implements feedback mechanisms where the primary device continuously receives information about network usage, data consumption, and service status of all associated secondary devices. This feedback enables the primary device to monitor and control usage patterns, set service limitations, and receive notifications when thresholds are exceeded. The feedback loop maintains ease of operation by providing real-time visibility and control capabilities despite having multiple secondary devices connected.
Solution Approach 2:
The patent introduces an intermediary control mechanism where the primary device acts as a mediator between the network operator and secondary devices. The primary device receives authorization from the network operator to manage secondary devices and enforces service limitations, usage policies, and access control on behalf of both the operator and secondary device users. This intermediary role maintains operational control while enabling expanded connectivity coverage.
3Productivity
If service limitations are imposed on secondary devices, then network resource control is improved, but service flexibility and adaptability are reduced
Solution Approach 1:
The patent implements dynamic service limitations that can be adjusted in real-time based on usage patterns, device type, and network conditions. Rather than imposing static restrictions, the system allows service parameters (data limits, speed thresholds, time-of-day restrictions) to be modified dynamically by the primary device or network operator. This dynamic approach maintains productivity through resource control while preserving service flexibility, as limitations can be adapted to changing requirements without being permanently restrictive.
Data Source
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AI summary
A method of operating a network node in a communication network may include receiving a request from a first communication device. The request may be a request to associate a second communication device, and the request may include an identification for the second communication device. A definition of a service limitation for the second communication device may be received from the first communication device, and in response to the request from the first communication device, a network access credential may be provided for the second communication device. Communication for the second communication device may be provided in accordance with the definition of the service limitation using the network access credential. Related communication devices and network nodes are also discussed.