Identifier Mapping Database for Neutral Host Emergency Alerts
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Solution Overview
Problem
Current 3GPP and GSMA standards primarily address Public Warning System (PWS) message transmission to users through Mobile Network Operators (MNOs), but fail to effectively direct warnings to User Equipment (UEs) connected via private or non-public communications networks, such as those using the Citizens Broadband Radio System (CBRS), especially in scenarios involving Multi-Operator Core Networks (MOCN) and Neutral Hosting architectures.
Innovation Solution
The implementation of an Identifier Mapping Database (IMD) within a Private CBRS/Non-Public Network, which maps Mobile Network Operator (MNO) identifiers to Private CBRS/Non-Public Network identifiers, enabling the identification of target notification regions and routing of alert messages to specific UEs, while ensuring that only one MNO is chosen for notification based on the target area and a Neutral Host within that area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If PWS messages are transmitted using standard MNO identifiers through MOCN gateway, then messages can be routed to multiple MNOs, but duplicate messages are sent to UEs and notification reliability deteriorates
Solution Approach 1:
The patent introduces an Identifier Mapping Database (IMD) as an intermediary component between the MOCN gateway and MNOs. The IMD receives notification requests with target TAC-ID and Cell-ID, maps these private network identifiers to the specific MNO that owns them, and forwards requests to only that MNO. This mediator prevents duplicate notifications while ensuring accurate delivery to the correct MNO's UEs.
2Adaptability or versatility
If private network uses its own TAC-ID and Cell-ID independently, then location-based services can be provided, but coordination with MNOs for PWS notification becomes complex
Solution Approach 1:
The IMD serves as a coordination intermediary that translates between private network identifiers (TAC-ID, Cell-ID) and MNO identifiers. This allows the private network to maintain independent identifier assignments for location-based services while the IMD handles the complexity of mapping these to the correct MNO, thereby simplifying PWS notification coordination.
Solution Approach 2:
The system performs preliminary identifier mapping by storing the relationship between private network TAC-ID/Cell-ID combinations and their corresponding MNOs in the IMD before PWS notification is needed. This pre-established mapping eliminates the need for complex real-time coordination when notifications are sent.
3Ease of operation
If MNO identifiers are used directly for PWS notification in neutral host architecture, then standard protocols can be followed, but messages cannot be accurately targeted to specific private network regions
Solution Approach 1:
The IMD acts as a translation intermediary that receives MNO-compatible notification requests containing target TAC-ID and Cell-ID, looks up the corresponding MNO identifier in its database, and forwards the request to the appropriate MNO. This maintains protocol compatibility while achieving precise targeting of private network regions.
Solution Approach 2:
The system pre-establishes the mapping between private network identifiers (TAC-ID, Cell-ID) and MNO identifiers in the IMD during network setup. This preliminary configuration enables accurate region-specific targeting while maintaining compatibility with standard MNO notification protocols.
Data Source
AI summary
A system and method are provided for sending alert messages to end users. Based on a location component, one or more particular UEs (User Equipment) that communicate via a private network are determined. Directing an emergency message to a subset of Access Points (APs) within a private network based on the one or more particular UEs determined. In some embodiments, an Identifier Mapping Database (IMD) maps the Mobile Network Operator (MNO) identifiers to Private CBRS/Non-Public Network (PCNN) identifiers. In some embodiments, a roaming connection is established between the private network and the MNO network. In some embodiments, a UE cell ID is mapped to an AP based on a notification area.