Private Home PLMN in UICC for Seamless Network Switching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Challenges exist in seamlessly integrating private cellular networks with public cellular networks, particularly in ensuring seamless mobility and intelligent handover without requiring multiple SIM cards or complex network reselection algorithms.
Innovation Solution
A mobile device prioritizes attachment to a private home public land mobile network (PHPLMN) by using a single UICC environment, scanning for available air interfaces, and performing intelligent handovers to ensure seamless connectivity between private and public networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple SIM cards or complex network reselection algorithms are used to integrate private and public cellular networks, then network integration capability is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple network identities (private network PLMN and public network HPLMN) into a single UICC card, eliminating the need for multiple SIM cards. The single UICC stores multiple IMSIs and enables the mobile device to attach to different networks seamlessly, reducing device complexity while maintaining network integration capability.
Solution Approach 2:
The single UICC card is designed to perform multiple functions: it can identify both private network PLMN and public network HPLMN, and enable attachment to either network type. This multi-functional design replaces what would traditionally require separate SIM cards, simplifying the device architecture while maintaining versatility.
2Reliability
If seamless mobility between private and public networks is implemented, then service continuity is improved, but network switching complexity increases
Solution Approach 1:
The UICC card is pre-configured with multiple network identities (IMSIs) and the mobile device is pre-capable of supporting multiple PLMNs. This preliminary setup enables seamless switching without requiring complex real-time decision algorithms, as the device already has the necessary credentials and capabilities prepared in advance.
Solution Approach 2:
The single UICC card acts as an intermediary that manages multiple network identities and facilitates automatic network selection and attachment. It mediates between the private and public networks, handling the switching logic internally without requiring complex external control algorithms, thus simplifying the overall system while ensuring service continuity.
3Ease of operation
If a single UICC environment supports multiple network identities, then device simplicity is improved, but network selection intelligence must increase
Solution Approach 1:
The mobile device with the single UICC card autonomously performs network selection and attachment decisions based on its internal capabilities and the available networks. The device self-manages the complexity of supporting multiple PLMNs and automatically attaches to appropriate networks without requiring user intervention or external control, thus maintaining simplicity while incorporating intelligent automation.
Data Source
AI summary
Aspects of the subject disclosure may include, for example, a mobile device that includes a home public land mobile network (HPLMN) identifier and a private home public land mobile network (PHPLMN) identifier. The mobile device prioritizes attaching to a radio access network (RAN) of the PHPLMN. The PHLMN and PHPLMN identifiers may be provided as part of an over-the-air (OTA) update. Other embodiments are disclosed.