IMS Proxy Server Terminal Characteristic Routing
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Solution Overview
Problem
Current IMS communication networks face performance constraints due to the inability to dynamically select the most suitable P-CSCF server based on terminal characteristics, leading to increased resource usage and inefficient processing of SIP messages.
Innovation Solution
A method and system that allow terminals to select an entry server in the IMS communication network based on specific characteristics, such as operating system, public identity, or access type, by using a proxy server to redirect SIP messages to a P-CSCF server optimized for those characteristics, thereby alleviating the load on entry point servers and improving service quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a terminal uses a fixed P-CSCF server for registration in an IMS network, then the terminal can establish stable communication connections, but the P-CSCF server experiences increased processing load and resource consumption due to handling diverse terminal types with generic HMR manipulations
Solution Approach 1:
The invention segments the P-CSCF server pool into multiple specialized servers, each dedicated to handling specific terminal types or characteristics. The proxy server routes terminals to appropriate P-CSCF servers based on terminal characteristics extracted from registration messages, thereby distributing processing load and enabling specialized handling for each terminal category.
Solution Approach 2:
The invention applies local quality by assigning different processing capabilities to different P-CSCF servers based on their specialization. Each P-CSCF server is optimized to handle specific terminal types with tailored HMR manipulation rules, rather than using a uniform approach across all servers. This allows each server to operate with optimized processing for its designated terminal category.
2Adaptability or versatility
If the P-CSCF server applies HMR manipulations to all SIP messages to ensure compatibility, then terminal compatibility is improved, but the processing time and resource consumption increase significantly
Solution Approach 1:
The invention performs preliminary action by pre-categorizing terminals based on their characteristics (operating system, terminal type, access method) before SIP message processing. The proxy server analyzes terminal characteristics from the registration message and routes the terminal to a P-CSCF server pre-configured with appropriate HMR manipulation rules, avoiding the need for comprehensive analysis and manipulation of every SIP message.
Solution Approach 2:
The invention changes the parameter of terminal routing from a static, generic approach to a dynamic, characteristic-based approach. By extracting and analyzing terminal characteristics parameters from registration messages, the system adapts the routing decision to match terminal-specific requirements, enabling optimized HMR manipulation for each terminal category rather than applying universal manipulations.
3Device complexity
If the network uses a single entry point for all terminals, then the network architecture remains simple, but the system cannot optimize resource allocation based on terminal characteristics
Solution Approach 1:
The invention introduces a proxy server as an intermediary component between terminals and P-CSCF servers. This intermediary analyzes terminal characteristics from registration messages and makes intelligent routing decisions to distribute terminals to appropriate P-CSCF servers. The proxy server adds minimal complexity while enabling optimized resource allocation and specialized handling for different terminal types.
Data Source
AI summary
A method and a proxy server for selecting an input server of an IMS communication network in order to register a terminal in the IMS communication network. Following receipt from the terminal of an SIP registration message, the proxy server obtains a value of at least one field of the SIP registration message, the field being representative of a characteristic belonging to the terminal, and selects an input server using the at least one value obtained. Then, the proxy server sends, to the terminal, an SIP redirection message including an IP address of the selected input server.