NB-IoT Host Device SIM Authentication for WiFi Data Sync
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Solution Overview
Problem
NB-IoT devices with embedded SIM cards face limitations in data transmission capacity and power consumption due to their fixed, non-removable SIM cards, which restrict their ability to connect to high-power networks for efficient data synchronization.
Innovation Solution
An information capturing system and communication method where a host device accesses and utilizes the identity authentication information from the SIM card of an NB-IoT device to establish a network connection through a high-power-consumption network unit, reducing power consumption by switching from low-power to high-power network connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If NB-IoT devices use low-power-consumption network-connection unit, then power consumption is reduced, but data transmission capacity and network connectivity are limited
Solution Approach 1:
The patent combines the low-power-consumption network-connection unit (NB-IoT module) with a high-power-consumption network-connection unit (WiFi module) into a single device, allowing the device to leverage both communication technologies. The SIM card's identity authentication information is shared between both modules, enabling seamless switching between low-power and high-power transmission modes based on data requirements.
Solution Approach 2:
The system dynamically switches between low-power NB-IoT mode and high-power WiFi mode based on real-time communication needs. When data transmission capacity requirements are high, the device activates the WiFi module; when power conservation is prioritized, it uses the NB-IoT module. This dynamic adaptation resolves the contradiction between power consumption and data transmission capacity.
2Device complexity
If SIM cards are embedded in NB-IoT devices, then device integration is improved, but SIM card replaceability and versatility are lost
Solution Approach 1:
The SIM card is designed to serve multiple functions and multiple network modules simultaneously. A single SIM card can be recognized and used by both the NB-IoT module and the WiFi module, allowing the same authentication credentials to work across different communication technologies and even different devices, thereby maintaining versatility while achieving integration.
Solution Approach 2:
The patent separates the SIM card function from the specific network module. Instead of having dedicated SIM cards for each module, the SIM card operates as an independent authentication unit that can be accessed by multiple modules through a standardized interface, enabling replaceability and versatility.
3Reliability
If NB-IoT devices connect directly to base stations, then network access is achieved, but power consumption increases
Solution Approach 1:
The device employs periodic action by switching between dormant NB-IoT state and active WiFi transmission based on synchronization requirements. Data synchronization through the high-power WiFi module occurs periodically when needed, while the low-power NB-IoT connection maintains basic network access, reducing overall power consumption compared to continuous high-power operation.
Solution Approach 2:
The host device acts as an intermediary between the information capturing device and the base station. The information capturing device communicates with the host device over a low-power link, while the host device handles the high-power base station communication, thereby mediating the power consumption issue and allowing the information capturing device to maintain reliable network access without direct high-power transmission.
Data Source
AI summary
A communication method for an information capturing system includes the steps of: detecting for a communication link between a host device and an information capturing device, the host device having a high-power-consumption network-connection unit, the information capturing device having a low-power-consumption network-connection unit and a SIM card, and the SIM card storing an identity authentication information; and creating, upon affirmative detection of the communication link, a network connection to a base station by the high-power-consumption network-connection unit, using the identity authentication information.