#Japan #Fukuoka #EiM #LibeSIM #SGP.32

Introduction

The integration of Global Navigation Satellite System (GNSS) location data with the SGP.32 compliant eIM (eSIM IoT Remote Manager) has led to a revolutionary automatic line switching implementation by Common Creation, Inc., headquartered in Fukuoka, Japan. This pioneering technology is designed to enhance the operational efficiency of mobile IoT devices, minimizing manual tasks and ultimately reducing costs. As part of their showcase, LibeSIM will present a live demo of this automatic line switching mechanism at the upcoming Wireless Japan 2026 event, which will take place from May 27 to May 29, 2026, at Tokyo Big Sight.

Background

In the landscape of IoT device deployment, especially for vehicles, buses, construction machinery, and logistics devices, the need for the optimal communication carrier often varies by area. Certain locations may require a local network, yet physically swapping out SIM cards or managing separate line contracts for each device becomes increasingly burdensome as the number of devices grows. To address these challenges, Common Creation launched the LibeSIM service as an eSIM Tech Partner in March 2026, making them the first domestic provider in Japan to offer an SGP.31/32 compliant eIM. This innovative tool allows remote installation, activation, switching, and deletion of eSIM profiles without needing physical access to the devices.

Overview of the Demonstration

The demonstration showcases an automatic switching mechanism that activates the relevant carrier profile remotely once an IoT device enters a predefined area on a map. Users only need to define the area on the map and assign a name matching the corresponding eIM-managed carrier profile, enabling automatic line operations without any physical interaction with the devices. This implementation aims to address several operational scenarios, including:

1. Automatic Carrier Switching for Moving Vehicles: As vehicles cross regional boundaries, they will automatically switch to the most suitable local carrier profile, optimizing connectivity based on the operational area.
2. Local 5G and Public Network Switching: When entering ports and airports, profiles for low-latency local 5G connections will be activated, ensuring logistics vehicles have the best options for connectivity.
3. Temporary Area Switching: For temporary operational areas such as construction sites or events, devices can automatically switch carriers without any settings alteration upon arrival.

PoC Implementation Details

The proof-of-concept (PoC) demonstration involved the following components:

• - Test Vehicle: An IoT device equipped with a GNSS receiver.
• - Area Definitions: Two areas, "Kawagoe" and "Saitama," were defined using polygons on the map within Saitama Prefecture.
• - Carrier Profiles: Two profiles prepared for each area.
• - eUICC: SGP.32 compliant integrated eUICC.
• - Switching Trigger: Determining area entry based on GNSS location data.

The test successfully demonstrated that communication for the vehicle automatically switched between the Kawagoe area and Saitama City according to the defined geographical boundaries, illustrating the efficacy of the automated line switching.

Switching Process Flow

The entire process from area definition to line switching is streamlined as follows:
1. Define areas on the management interface and upload the definition files as polygons.
2. Assign respective profile names that match the eIM registered carrier profiles.
3. IOT devices relay their current location to the cloud every 30 seconds.
4. Determine the area of the device based on its location in the cloud.
5. Trigger the eIM to activate the corresponding profile for the device’s eUICC.
6. Execute the switching of communication carriers once the new profile is enabled.

This automation significantly reduces the workload for operators, limiting their responsibilities to area definitions and profile naming, as the subsequent processes are all automated.

Design Considerations for Commercial Use

The implementation has been designed with commercial deployment in mind, featuring mechanisms to prevent erroneous switching at area boundaries due to positioning inaccuracies. Additionally, it includes controls to avoid unnecessary eIM API calls when the target profile is already activated, reducing operational costs. The system provides audit logs for all switching attempts, allowing for easy troubleshooting and operational tuning.

Potential Applications

Although primarily developed as a vehicle-mounted router solution, the technology can be applied to various fields, including:

• - Logistics tracking vehicles
• - Construction and specialty vehicles
• - International logistics containers
• - Portable medical devices and measurement equipment

Future enhancements may include automatic reversion to default profiles when exiting areas, as well as webhook notifications to external systems.

Join Us at Wireless Japan 2026

Common Creation will exhibit at Wireless Japan 2026, where visitors can experience the live demonstration of the GNSS-based automatic line switching, along with tutorials on eSIM on-demand issuance and showcasing devices from partner manufacturers. Our engineers will be available to discuss inquiries related to eSIM and eIM technologies, as well as potential partnerships.

For attendees of our seminar, our business manager Yamamoto Masaki will deliver a session on IoT connection management in the SGP.32 era, highlighting dynamic provisioning and automatic switching based on location data.

Furthermore, the mechanisms discussed, including GNSS-triggered automatic switching, will feature prominently in our presentations.

Stay updated for more on LibeSIM and our innovations transforming IoT connectivity through our comprehensive services.