Convergence Server for Mobile-Terminated Call Processing in Femtocell Systems
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Solution Overview
Problem
Current cellular networks face limitations in processing mobile-terminated calls efficiently, particularly in femtocell systems, which rely on carrier network infrastructure with limited capacity, leading to communication overload and reduced subscriber capacity.
Innovation Solution
A method and system utilizing a convergence server in the core network to validate mobile stations attached to femtocell systems, transmit Session Initiation Protocol (SIP) messages, and engage the mobile core network in authentication processes, facilitating the processing of mobile-terminated voice calls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If carrier network infrastructure is used for femtocell call processing, then call processing capability is provided, but network capacity is limited and communication overload occurs
Solution Approach 1:
The patent segments the call processing function by introducing a dedicated convergence server that handles authentication and validation for femtocell systems separately from the main carrier network. This segmentation allows the carrier network to maintain its core functions while the convergence server specifically manages femtocell-related call processing, thereby increasing overall network capacity without compromising call processing capability.
2Reliability
If carrier network infrastructure is used for femtocell call processing, then call processing capability is provided, but communication overload occurs
Solution Approach 1:
The patent extracts the authentication and validation functions from the carrier network infrastructure and places them in a dedicated convergence server. By taking out these specific functions, the carrier network is relieved of the communication overload caused by handling all femtocell call processing, while the call processing capability is preserved through the specialized server that handles only authentication and validation tasks.
3Reliability
If carrier network infrastructure is used for femtocell call processing, then basic call processing is provided, but subscriber capacity is reduced
Solution Approach 1:
The convergence server acts as an intermediary between the femtocell systems and the carrier network. It handles authentication and validation requests, allowing multiple femtocell systems to operate simultaneously without competing for carrier network resources. This intermediary approach enables increased subscriber capacity by efficiently managing authentication tasks separately from the main carrier network operations.
Data Source
AI summary
A system, method, and computer readable medium that facilitates processing of mobile-terminated voice calls for a mobile station attached with a femtocell system are provided. A convergence server deployed in a core network receives a call request for a mobile station attached with a femtocell system, performs validation of the mobile station against a subscriber profile maintained by the convergence server, transmits a Session Initiation Protocol Invite message to the femtocell system, receives a paging authentication request, and engages a mobile core network in an authentication process for the mobile station.