IMS Contact Address Segmentation for GSM Messaging Integration
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Solution Overview
Problem
Current multi-access messaging systems in mobile telephony networks, particularly in IMS networks, face limitations in enabling GSM subscribers to seamlessly use messaging services, requiring separate messaging application servers for SMS and IMS services, which complicates service integration and user experience.
Innovation Solution
A method for registering a user terminal in an IMS network with distinct contact addresses for voice and messaging purposes, allowing GSM subscribers to send and receive text messages while receiving basic, supplementary, and value-added services, using SIP Register requests and IMS message routing to facilitate transparent service usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate messaging application servers are used for SMS and IMS services, then messaging services can be provided to GSM subscribers in IMS network, but device complexity and system complexity increase
Solution Approach 1:
The patent combines the messaging application server functionality with the existing IMS network infrastructure by registering a second contact address for messaging purposes in the IMS network. This allows the same IMS network to handle both voice calls and messaging services through unified contact address registration, eliminating the need for completely separate messaging application servers and reducing overall system complexity.
Solution Approach 2:
The IMS network is made multi-functional by enabling it to handle both traditional voice call services and messaging services through the registration of distinct contact addresses. The same IMS infrastructure serves multiple purposes: voice communication through the first contact address and messaging through the second contact address, thereby reducing the need for dedicated separate servers and lowering system complexity.
2Ease of operation
If multiple contact addresses are registered in IMS network, then seamless messaging integration is achieved, but registration and routing complexity increases
Solution Approach 1:
The contact address registration is segmented into two distinct functional parts: the first contact address for voice call services and the second contact address for messaging services. This segmentation allows the IMS network to route different types of communications through appropriate paths based on the contact address type, simplifying the routing logic compared to a single unified address that would need to handle all service types.
Solution Approach 2:
The IMS network acts as an intermediary that receives communications directed to the second contact address and forwards them to the appropriate messaging service. This intermediary function simplifies the overall routing complexity by providing a standardized interface between external messaging systems and the IMS network, abstracting the underlying complexity from both senders and recipients.
Data Source
AI summary
Method and gateway unit for registering a user terminal (34) of a multimedia subscriber being a subscriber of a circuit switched network (32), in an IP multimedia system (IMS) network (31). Registration in the IMS network (31) of a first contact address associated with a circuit switched communication capability of the user terminal (34) for regular communication purposes is used, as well as registration in the IMS network (31) of a second contact address associated with a circuit switched communication capability of the user terminal (34) for messaging purposes.