Core Network IMSI Status Management for Wearable Power Reduction
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Solution Overview
Problem
In IoT applications, wearable devices face high power consumption when proactively initiating location updates to activate their SIM cards, which is inefficient and costly, especially when connected via LTE or relay nodes sharing the same MSISDN.
Innovation Solution
A method where a core network node manages the IMSI status of terminal devices by receiving activation requests from one device to activate or deactivate another, based on subscription information, reducing the need for the device to actively participate in IMSI activation or deactivation, allowing a connected device like a smartphone to handle the process for a wearable device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the wearable device proactively initiates a location update process to activate the IMSI, then the IMSI activation is achieved, but power consumption of the wearable device is greatly increased
Solution Approach 1:
The patent introduces a core network node as an intermediary that receives activation requests from the wearable device and performs the IMSI activation process on behalf of the device. The core network node communicates with the wearable device through a relay node, allowing the activation to occur without the wearable device directly initiating location updates, thus reducing its power consumption while still achieving reliable IMSI activation.
2Adaptability or versatility
If the wearable device is connected to a relay node and then to the network, then connectivity is achieved, but the complexity of the connection process increases
Solution Approach 1:
The patent segments the connection process into distinct phases: the wearable device first establishes a connection with the relay node, and then the relay node establishes a separate connection with the core network node. This segmentation allows each connection to be managed independently, simplifying the overall complexity while maintaining adaptability for different connection scenarios.
3Productivity
If multiple SIM cards share one MSISDN, then resource utilization is improved, but the IMSI management complexity increases
Solution Approach 1:
The core network node acts as an intermediary that manages the mapping between multiple IMSIs and a single MSISDN. It maintains the subscription information that links different IMSIs to the shared MSISDN and handles the activation/deactivation of specific IMSIs based on requests from terminal devices, thereby simplifying the management complexity for end devices while improving resource utilization.
Data Source
AI summary
Embodiments of this application provide a method, an apparatus, and a system for managing an international mobile subscriber identity (IMSI) status of a terminal device. An IMSI of a second terminal device is activated or deactivated through interaction between a first terminal device and a core network node, so that the second terminal device does not participate in activating or deactivating the IMSI of the second terminal device. Therefore, power consumption of the second terminal device can be reduced, and a requirement of an Internet of Things application scenario can be met.