Multi-Line IMS Registration via Back-to-Back Module
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Solution Overview
Problem
Current Subscriber Identity Registration in IP Multimedia System (IMS) using VoLTE networks is limited to single or dual identities, making it difficult to support multiple concurrent identities, which restricts users from utilizing additional services and efficient network usage.
Innovation Solution
Implementing a Multi Back-2-Back Registration (MB2B) module within the IMS/VoLTE network to manage multi-identity registrations transparently, offloading this process from user equipment (UE) to a dedicated or upgraded network component, allowing for seamless support of multiple identities without altering existing infrastructure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a soft client is used to provide multiple endpoint capabilities on a single UE device, then multiple identities can be supported, but device complexity and processing complexity increase significantly
Solution Approach 1:
The patent extracts the multi-identity registration management functionality from the UE device and relocates it to the network infrastructure (specifically the P-CSCF and HSS). The UE only needs to register a primary identity, while the network automatically manages additional identities through back-to-back registration procedures, thereby reducing device complexity while maintaining multi-identity support
Solution Approach 2:
The patent introduces an intermediary network component (P-CSCF) that mediates between the UE and the HSS for multi-identity registration. The P-CSCF performs back-to-back registration on behalf of the UE, acting as a mediator that handles the complexity of multiple identity registrations without requiring the UE to directly manage each identity, thus reducing processing complexity on the device
2Reliability
If each identity is registered separately in the IMS network, then proper call routing is ensured, but network load and registration overhead increase
Solution Approach 1:
The patent merges multiple separate registration procedures into a single unified registration process. Instead of requiring separate registration for each identity, the system performs a single registration that triggers automatic back-to-back registration for all associated identities through the P-CSCF, maintaining routing accuracy while significantly improving registration efficiency
Solution Approach 2:
The patent implements preliminary action by having the P-CSCF pre-configure and automatically register additional identities when a primary identity is registered. This preliminary registration setup ensures that all identities are properly configured in advance, eliminating the need for separate registration steps later and improving overall registration efficiency while maintaining routing reliability
3Adaptability or versatility
If multiple concurrent identities are supported on a single UE, then service flexibility increases, but memory and battery consumption on the device increase
Solution Approach 1:
The patent extracts the burden of managing multiple identity registrations from the UE device and transfers it to the network infrastructure. The UE only maintains a single primary identity registration, while the network handles additional identities through automated back-to-back registration, thereby maintaining service flexibility while significantly reducing memory usage and battery consumption on the device
Data Source
AI summary
A multi-line network registration capability for an IMS network is disclosed. Registration with a Home IMS domain is used for a user equipment (UE) device to authenticate to the IMS network infrastructure. IMS network infrastructure expects each UE to have a single identity (e.g., IMPI/IMPU pair) on the network. A multiple back to back registration (MB2B) module may optionally provide multiple identities to a single UE device. Multiple identities may be associated with a service plan provided for the IMPI/IMPU unique identifier. Infrastructure of the Home IMS domain may be used to support the multiple identities for a given UE device. Accordingly, the MB2B module may not require any additional infrastructure changes by other service providers. The MB2B module may be implemented as a software upgrade to existing infrastructure devices or may be implemented as a standalone front-end device to assist in performing registrations for a telco service provider.