Cellular Router eSIM Caching for Latency Reduction
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Solution Overview
Problem
Current systems for cellular routers accessing SIM profiles remotely face latency and packet loss issues, leading to unreliable connectivity, and managing multiple SIM profiles is resource-intensive for administrators.
Innovation Solution
A method and system that involves receiving information requests from wireless communication modules, determining if the response is stored, and either retrieving it locally or forwarding it to a massive SIM apparatus, with the processing unit controlling IO pins and generating alerts for SIM profile management, and establishing data communication by selecting and downloading eSIM profiles from wireless carrier networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If SIM profiles are accessed remotely through the Internet, then device complexity is reduced and ease of operation is improved, but latency and packet loss increase significantly impacting reliability
Solution Approach 1:
The system pre-loads SIM profile data into local storage units before it is needed for operation. This preliminary action ensures that when the cellular router needs to access SIM profiles, the data is already available locally, eliminating latency and packet loss associated with remote Internet access while maintaining the simplified architecture of remote SIM management.
Solution Approach 2:
A local storage unit acts as an intermediary between the remote SIM profile management system and the cellular router's wireless communication modules. This intermediary caches SIM profile data locally, allowing fast access without requiring continuous Internet connectivity, thus resolving the contradiction between remote management ease and connectivity reliability.
2Device complexity
If hundreds and thousands of SIM profiles are maintained and managed remotely, then device complexity is reduced, but time and resources of administrators are significantly consumed
Solution Approach 1:
The system implements automated SIM profile selection and installation capabilities. The cellular router can autonomously select appropriate SIM profiles from cached data and install them without administrator intervention. This self-service mechanism dramatically reduces administrator time and resources while maintaining the ability to manage large numbers of SIM profiles through the simplified remote architecture.
Solution Approach 2:
SIM profiles are pre-cached in local storage units before they are needed. This preliminary preparation allows the system to quickly retrieve and install profiles without requiring administrators to manually manage each profile, thus reducing administrative overhead while maintaining low device complexity.
3Reliability
If SIM profiles are cached locally in storage units, then connectivity reliability is improved by reducing latency, but device complexity and memory usage increase
Solution Approach 1:
The system extracts only the essential SIM profile data needed for operation and stores it in dedicated local storage units. By separating the caching function from the main processing architecture and storing only necessary data, the system improves connectivity reliability through local access while minimizing the increase in device complexity.
Solution Approach 2:
The local storage units are designed to cache multiple SIM profiles simultaneously, serving as a universal repository that can provide data for any wireless communication module. This multi-functional approach improves reliability across all modules without proportionally increasing complexity, as a single storage infrastructure serves multiple purposes.
4Productivity
If automated SIM profile selection and installation is implemented, then productivity is improved by reducing administrative workload, but device complexity and processing requirements increase
Solution Approach 1:
The cellular router is equipped with automated capabilities to independently select appropriate SIM profiles from cached data and install them without administrator intervention. This self-service automation dramatically improves productivity by eliminating manual management tasks while the processing complexity remains manageable because the system only needs to compare profile identifiers and retrieve pre-cached data.
Solution Approach 2:
The automated system implements selective caching of SIM profile data, storing only the portions of profiles that are frequently needed or likely to be used. This partial action approach provides sufficient automation to improve productivity while avoiding the excessive processing complexity that would result from caching and managing all possible profile data.
Data Source
AI summary
The present invention discloses methods and systems for providing UICC/eUICC related response information to information requests at a cellular router. The method includes receiving an information request from a wireless communication module, and determining whether a response to the information request is cached. When the response information is not cached, forwarding the information request to a massive SIM apparatus (MSA). MSA will then respond to the information request. A response based on the MSA's response will then be sent to the wireless communication module for the information request. When the response information is cached, retrieve the response information and send it to the wireless communication module.