Selective Voice Call Continuity Link Establishment
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Solution Overview
Problem
Current Voice Call Continuity (VCC) solutions incur higher licensing costs due to always anchoring VoIP calls within the IMS network, regardless of the Radio Access Technology (RAT) used, leading to inefficient network resource utilization.
Innovation Solution
A method for selectively establishing a voice call continuity link between a mobile device and a VCC application server based on mobile device location information and network availability, using a database to determine whether a VCC link is needed, thereby avoiding unnecessary anchoring within the IMS network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all VoIP calls are anchored to the IMS VCC application server, then call continuity is ensured across all networks, but licensing costs and network resource utilization increase
Solution Approach 1:
The patent changes the parameter of VCC anchoring from a static always-on state to a dynamic state based on network conditions. The system evaluates radio conditions, network availability, and call state parameters to determine whether VCC anchoring is necessary, thereby reducing licensing costs while maintaining call continuity when needed
Solution Approach 2:
The patent introduces dynamic decision-making for VCC anchoring based on real-time network conditions. The system continuously monitors radio conditions and network state, adjusting the anchoring configuration dynamically rather than maintaining a fixed anchoring state, which optimizes both cost and reliability
2Reliability
If VCC links are established for all calls, then call continuity is maintained regardless of network conditions, but network resource utilization increases
Solution Approach 1:
The system changes the anchoring parameter from a universal default to a condition-based decision. By evaluating network conditions, radio quality, and call state parameters, the system adjusts anchoring configuration to match actual needs, improving resource utilization while preserving call continuity
Solution Approach 2:
The patent applies partial anchoring only when necessary rather than universal anchoring. The system determines the minimum required anchoring intervention based on network conditions, applying VCC links selectively to calls that need them while leaving others to use standard VoIP paths, thus optimizing resource utilization
Data Source
AI summary
A method for selectively establishing a voice call continuity link between a mobile device and a voice call continuity application server includes the steps of receiving a request to establish a voice over IP call connection at the voice call continuity application server from the mobile device, the request including mobile device location information for the mobile device. The method determines at the voice call continuity application server whether the voice call continuity link is needed between the voice call continuity server and the mobile device responsive to the mobile device location information within the request and network location information stored within a database associated with the voice call continuity application server. The method establishes the voice call continuity link between the mobile device and the voice call continuity application responsive to a determination that the voice call continuity link is needed.