Converged IP Message Server Network Compatibility
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Solution Overview
Problem
Existing messaging systems in next-generation IP networks, such as IMS, face challenges in ensuring timely notification of Converged IP Messages across different mobile networks that support SMS, MMS, and IM services but not IMS signaling or messaging, particularly for users registering in networks with varying access technologies.
Innovation Solution
The enhanced Converged IP Message server system and method ensure timely notification by managing CPM messaging services through an enhanced server configuration that communicates with IMS core and other network nodes, utilizing a CPM server to store and deliver messages, and employing a VideoMail server for SIP notifications and message delivery across various access technologies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the system supports multiple access technologies and network types (IMS and non-IMS), then the adaptability and service continuity are improved, but the device complexity and system architecture become more complex
Solution Approach 1:
The patent introduces a message waiting indicator (MWI) subscription mechanism as an intermediary layer between the CPM server and user equipment. This subscription-based approach mediates communication across IMS and non-IMS networks, allowing the system to handle multiple network types without requiring complex point-to-point integrations for each network combination.
Solution Approach 2:
The CPM server is designed with multi-functional capabilities to serve both IMS and non-IMS networks through a unified architecture. The server can handle CPM messages, subscribe to MWI events, and interact with different network types using standardized protocols, eliminating the need for separate specialized systems for each network type.
2Reliability
If the system implements comprehensive message notification across all networks, then the reliability of message delivery is improved, but the loss of time for message notification increases
Solution Approach 1:
The system performs preliminary actions by subscribing to message waiting indicator events in advance through the CPM server. This subscription is established before messages arrive, enabling the system to receive immediate notifications when messages are delivered, rather than polling or detecting delays after the fact.
Solution Approach 2:
The MWI subscription mechanism provides real-time feedback to the CPM server about message delivery status. When a message is delivered to user equipment, the network generates an MWI event that is subscribed to by the CPM server, providing immediate feedback about the delivery state without requiring additional polling or delay.
Data Source
AI summary
A method comprises registering, by an enhanced CPM server, to receive IMS registrations for a client device, receiving, by the enhanced CPM server, a message intended for the client device, storing the message in a network store, setting a Message Waiting Indicator flag in a HLR associated with the client device, receiving, from the HLR, an alert message that the client device has registered in a non-IMS network, and delivering, by the enhanced CPM server, at least a reference to the message stored in the network store to the client device.