IMS Message Interworking via IP-SM-GW Domain Routing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current IMS-based message services face challenges in interworking with non-IMS-based message services, particularly when sending messages from an IMS-based calling subscriber to a called subscriber in a traditional CS/PS network domain, leading to unclear interworking processes and low practicability.
Innovation Solution
The method involves determining the network domain of the called subscriber using information in the message service request and forwarding the MESSAGE request to an IP-SM-GW, which extracts or converts the message contents to implement the service, enabling effective interworking between IMS-based and non-IMS-based message services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the IMS network attempts to send messages to non-IMS network domains, then message service coverage is improved, but the interworking process becomes unclear and practicability decreases
Solution Approach 1:
The patent introduces an IP-SM-GW (IP Short Message Gateway) as an intermediary component between the IMS network and non-IMS network domains. This gateway acts as a mediator that receives MESSAGE requests from the IMS network, determines the appropriate routing based on the called subscriber's network domain, and forwards messages to the correct destination. The gateway includes a determination unit that identifies whether the called subscriber is in an IMS or non-IMS domain, and a forwarding unit that routes messages accordingly, thereby clarifying the interworking process and improving practicability.
2Reliability
If the IMS network implements standardized message services, then service consistency is improved, but the ability to interwork with traditional CS/PS networks deteriorates
Solution Approach 1:
The patent implements dynamic routing capabilities that allow the system to adapt its behavior based on the destination network domain. The IP-SM-GW dynamically determines whether the called subscriber is located in an IMS or non-IMS domain and adjusts its forwarding behavior accordingly. This dynamic approach enables the network to maintain standardized service procedures for IMS domains while simultaneously supporting traditional CS/PS network interworking, thus resolving the contradiction between service consistency and interworking capability.
3Speed
If the MESSAGE request is forwarded directly without domain determination, then processing speed is improved, but message delivery accuracy to the correct network domain deteriorates
Solution Approach 1:
The patent implements a preliminary domain determination step that occurs before message forwarding. The IP-SM-GW performs network domain identification by analyzing the called subscriber's information to determine whether they are located in an IMS or non-IMS domain. This preliminary action ensures accurate routing decisions are made before messages are forwarded, preventing delivery errors while maintaining efficient processing through automated determination mechanisms.
Data Source
AI summary
Methods for implementing a message service based on IP Multimedia Subsystem (IMS) are disclosed in embodiments of the invention. One of the methods includes: determining a network domain of a called subscriber according to information in a message service of a calling subscriber; conducting the message service according to a type of the network domain of the called subscriber. Systems for implementing a message service based on IMS, IMS-based Serving-Call Session Control Function (S-CSCF), and IP-Short Message-Gateway are disclosed in the embodiments of the invention. The invention facilitate the network domain of calling side to select different processing procedures for the called subscriber information in different network domains by deciding the network domain of called subscriber, which makes the interworking procedure between an IMS-based message and a non-IMS-based message service clearer and the interworking procedure between an IMS-based message and the traditional short message more perfect.