Stateless Application Server VoIP Service Control
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Solution Overview
Problem
The conventional IMS architecture faces challenges in service control, particularly with VoIP services, including identity manipulation and fraud, leading to unwanted billing due to the lack of call state management and signaling load on network resources.
Innovation Solution
A stateless application server is introduced to manage SIP messages and control service integrity by routing messages via a call stateless application server, which reduces signaling load and prevents unauthorized call sessions, ensuring accurate caller identity and efficient resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional IMS application servers are used to maintain call state and provide VoIP services, then service functionality is improved, but signaling load on network resources increases substantially
Solution Approach 1:
The patent segments the call handling functionality by separating the user terminal (which maintains call state) from the network application server (which provides service logic). This segmentation allows the terminal to handle signaling locally without requiring continuous network server involvement, thereby reducing network signaling load while maintaining reliable call state management.
Solution Approach 2:
The user terminal is empowered to autonomously manage its own call state and service configuration without requiring continuous assistance from network application servers. The terminal self-configures services and handles call state locally, reducing the signaling burden on network resources while maintaining service reliability.
2Adaptability or versatility
If application servers host all VoIP services in the network, then service control capability is improved, but device complexity and network resource requirements increase
Solution Approach 1:
The patent extracts call state management functionality from the network application server and relocates it to the user terminal. This extraction simplifies the network architecture by removing the need for complex stateful application servers, while the terminal assumes responsibility for maintaining its own call state, reducing overall system complexity.
Solution Approach 2:
Instead of having the network server manage call state (conventional approach), the patent inverts the architecture by having the user terminal manage its own call state. This inversion simplifies the network side while maintaining full service control capability through the terminal's autonomous operation.
3Reliability
If user terminals are prevented from registering to network services, then fraud and identity manipulation are reduced, but service accessibility decreases
Solution Approach 1:
The patent introduces an intermediary mechanism where the user terminal acts as a mediator between itself and the network services. The terminal autonomously manages service registration and configuration, providing fraud prevention through self-control while maintaining service accessibility by allowing the terminal to register and access services independently without requiring network server mediation for each interaction.
Data Source
AI summary
A method and a system is described for controlling a service in a service provisioning network. The method including the steps of: a serving network node associated with a user terminal receiving a registration message, the user terminal having one or more of services, preferably VoIP services; and, the serving network node retrieving in response to the registration message service routing information associated with the first user terminal, the service routing information being arranged to route service messages associated with the first user terminal via a stateless application server, the stateless application server being adapted to perform control actions on said service messages.