Local CSCF Server for Mobile Terminal IMS Registration
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Solution Overview
Problem
Existing IMS networks require complex registration and interoperability testing for mobile access terminals to access application services, which is inefficient and time-consuming, especially when deploying new applications.
Innovation Solution
Implementing a local CSCF server on the mobile access terminal that includes features of a Serving Call Session Control Function (S-CSCF) and interacts with a remote S-CSCF via a network-to-network interface, facilitating direct access to application services and reducing the need for extensive regression testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mobile access terminals use traditional IMS network registration process to access application services, then network control and service management are maintained, but the registration and interoperability testing process becomes complex and time-consuming
Solution Approach 1:
The patent segments the traditional centralized IMS network registration process into distributed local registration operations. Each mobile access terminal runs a local CSCF server that performs registration and interoperability testing locally, rather than requiring centralized network registration. This segmentation eliminates the time-consuming centralized registration process while maintaining necessary network control through the local server's interaction with the application service client.
Solution Approach 2:
The mobile access terminal performs self-registration and self-testing through the local CSCF server. The terminal autonomously executes interoperability testing and registration operations without requiring manual intervention or extensive centralized network processing. This self-service approach significantly reduces deployment time while maintaining service reliability through automated local validation.
2Reliability
If extensive regression testing is performed for new application deployment on IMS network, then service interoperability is ensured, but deployment efficiency decreases
Solution Approach 1:
The local CSCF server performs preliminary interoperability testing and registration validation before actual service deployment. By conducting these checks in advance at the local level, the system ensures service interoperability is verified beforehand, eliminating the need for extensive post-deployment regression testing and thereby improving deployment efficiency.
Solution Approach 2:
The local CSCF server acts as an intermediary between the application service client and the traditional IMS network. It performs local interoperability testing and validation, serving as a mediator that ensures service compatibility without requiring extensive direct testing with the centralized network infrastructure. This intermediary function maintains reliability while streamlining the deployment process.
3Stability of the object's composition
If centralized IMS network registration is used for all terminals, then network-wide service consistency is maintained, but individual terminal access time increases
Solution Approach 1:
The patent segments the centralized registration function into distributed local registration operations. Each terminal's local CSCF server handles registration independently, eliminating the queueing and processing delays associated with centralized registration. This segmentation maintains service consistency through local validation while dramatically reducing individual terminal access time.
Solution Approach 2:
The patent introduces a new dimensional approach by moving registration operations from the network dimension to the terminal dimension. Instead of all terminals accessing the network for registration, each terminal performs registration locally in its own operational dimension. This dimensional shift maintains service consistency through local enforcement of standards while eliminating network access time overhead.
Data Source
AI summary
A computing device, computing system, method, and medium are provided for utilizing a local Call Session Control Function (CSCF) server located on a mobile access terminal to facilitate access to application services hosted by an application server. An application-service client corresponding to the application server is instantiated on the mobile access terminal and interacts with the local CSCF server via a local control interface. The local CSCF server includes features of a Serving Call Session Control Function (S-CSCF), and thereby enables authentication, interoperability testing, and control functions to be performed in the operating environment on the MAT. The local CSCF server interacts according to a predetermined relationship with an S-CSCF on the IMS network to facilitate access to application services.