Convergent Call Control for Fixed-Mobile Service Symmetry
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Solution Overview
Problem
Current communication networks have a clear separation between fixed and mobile networks, limiting the ability to offer and administer telecommunication services symmetrically across both networks, leading to challenges in billing, interworking, and cross-network administration.
Innovation Solution
A method and device that enable control over call delivery between fixed and mobile networks, allowing services like parallel ringing and call distribution to be managed from the original network, with a convergent call control function that acts on both networks, using porting identifiers and name resolution services to route calls effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If services are controlled only in the original network, then service control is simple and reliable, but service management cannot be symmetric across fixed and mobile networks
Solution Approach 1:
The patent introduces a home network as an intermediary layer between fixed and mobile networks. The home network contains service control functions that can manage services symmetrically across both networks, while the actual call control remains distributed in the respective networks. This mediator enables unified service management without requiring complex integration between fixed and mobile networks.
Solution Approach 2:
The patent segments the control architecture into three distinct layers: home network (service control), visited network (call control), and access network (connection management). This segmentation allows each layer to perform its specific function independently, enabling symmetric service management while maintaining simplicity in each individual network's operation.
2Adaptability or versatility
If fixed and mobile networks are clearly separated, then each network operates independently and reliably, but cross-network services and billing are difficult
Solution Approach 1:
The home network is designed with universal service control functions that can handle both fixed and mobile network services through a unified interface. The home network can manage parallel ringing, call distribution, and other services across different network types using the same control mechanisms, enabling cross-network services while simplifying billing and administration through a single point of control.
3Adaptability or versatility
If parallel ringing is implemented across networks, then service versatility improves, but call control complexity increases
Solution Approach 1:
The patent extracts the service control functions (including parallel ringing management) from the visited networks and concentrates them in the home network. When parallel ringing is initiated, the home network controls the service logic while the visited networks simply execute call delivery to their respective connections. This extraction reduces call control complexity in individual networks while maintaining parallel ringing versatility.
Data Source
Figure 1
AI summary
The invention relates to a method for producing a fixed-mobile convergent telecommunications service on the basis of a convergent connection name from a name space, according to which calls are simultaneously delivered to a first and second communications network, said first communications network being operated by a first network provider and the second communications network being operated by a second network provider. The method is characterised in that: the convergent connection name is a first connection name and is assigned to a first connection in the first communications network; the first connection name is directly or indirectly assigned to a second connection in the second communications network; the first connection name is simultaneously characterised in a local unit for name resolution and name identification with local significance for said first communications network as transferred, more precisely as transferred to the second communications network; the first communications network interrogates the local unit for name resolution and name identification before delivering a call to the convergent connection names and as a result of a transfer identifier routes the call to the second communications network. The second communications network transfers control of the call to a call control function and the call is then forwarded, delivered or routed simultaneously to the second and first connections.