IMS Registration Routing Using Subscriber Server ID Association
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Solution Overview
Problem
Wireless communication networks face inefficiencies in registering wireless user devices with the Internet Protocol Multimedia Subsystem (IMS), leading to registration failures and delays due to improper association of registration requests with subscriber system network addresses.
Innovation Solution
A method and configuration for wireless communication networks that involve selecting a subscriber server from a plurality of available servers, transferring user authorization requests, and associating server IDs with registration requests to ensure proper routing, using functions like Call State Control Function (CSCF) to manage IMS registration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the IMS transfers registration signaling to different subscriber systems without proper timing control, then the registration process may proceed faster, but the registration process will fail due to improper timing
Solution Approach 1:
The patent applies preliminary action by having the first multimedia function obtain the server identifier from the subscriber server before transferring the registration request to the second multimedia function. This ensures that the second multimedia function can proactively select the same subscriber server in advance, preventing timing-related registration failures while maintaining efficient processing.
Solution Approach 2:
The patent implements feedback by having the first multimedia function transfer the server identifier obtained from the subscriber server to the second multimedia function. This feedback mechanism ensures that the second multimedia function uses the same subscriber server for processing the registration request, thereby maintaining consistency and preventing registration failures due to improper timing.
2Device complexity
If the IMS does not associate registration requests with subscriber system network addresses, then the system complexity is reduced, but the registration efficiency and routing accuracy deteriorate
Solution Approach 1:
The patent introduces an intermediary approach by using a server identifier as a reference that links the registration request to the selected subscriber server. Instead of directly associating complex network addresses with registration requests, the server identifier acts as a simple mediator that enables efficient routing while maintaining system simplicity.
3Ease of operation
If a fixed subscriber server is assigned to all registration requests, then the routing process is simplified, but the system adaptability to server availability and load conditions deteriorates
Solution Approach 1:
The patent applies dynamics by making the subscriber server selection flexible rather than fixed. The first multimedia function dynamically selects an available subscriber server based on current system conditions, and this selection is communicated to the second multimedia function via the server identifier. This ensures both routing simplicity and adaptability to changing server availability and load conditions.
Data Source
AI summary
Various embodiments comprise wireless communication network to register user devices with multimedia systems. In some examples, the wireless communication network comprises multimedia functions and a subscriber server. A first multimedia function receives a registration request for a wireless user device, selects the subscriber server from a plurality of available subscriber servers, and transfers a user authorization request for the user device to the subscriber server. The subscriber server receives the user authorization request and transfers a response indicating a server Identifier (ID) for the subscriber server. The first multimedia function receives the response and indicates the server ID and the registration request to a second multimedia function. The second multimedia function receives the server ID and the registration request, selects the same subscriber server based on the server ID, and transfers a multimedia authorization request to the subscriber server.