Converged Home Location Register Call Routing
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Solution Overview
Problem
Mobile communications devices face limitations in call routing due to varying cellular network quality and coverage, which affects service quality and user mobility, especially when transitioning between wireless data and cellular networks.
Innovation Solution
A converged home location register system that routes calls based on user profiles and current device location, switching between cellular and IP networks, and facilitating handoffs between different wireless protocols to maintain connectivity and improve user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If calls are routed through cellular networks, then voice communication service is provided, but coverage area and service quality vary due to network limitations
Solution Approach 1:
The patent combines cellular network and Wi-Fi network into a unified converged network architecture. The home location register (HLR) is enhanced to manage both cellular and IP-based routing, allowing calls to be seamlessly routed through either network based on availability and quality, thereby expanding coverage area while maintaining service quality.
Solution Approach 2:
The system dynamically routes calls between cellular and Wi-Fi networks based on real-time network conditions, device location, and available interfaces. The HLR continuously monitors network status and adjusts routing decisions to optimize both coverage area and service quality, transitioning from static cellular-only routing to dynamic multi-network routing.
2Ease of operation
If mobile devices rely on cellular networks for calls, then voice communication is enabled, but user mobility is restricted when transitioning between networks
Solution Approach 1:
The system performs preliminary actions by pre-configuring the device with both cellular and Wi-Fi capabilities, and pre-establishing routing policies in the HLR. When a call is incoming, the system has already prepared multiple routing options and can immediately switch networks without interruption, maintaining connectivity continuity while enabling user mobility.
Solution Approach 2:
The enhanced HLR acts as an intermediary between the mobile device and both cellular and Wi-Fi networks. It mediates the routing decisions, managing the complexity of network transitions and ensuring seamless handoffs between networks, thereby maintaining connectivity continuity while supporting user mobility across different network environments.
3Reliability
If a unified routing system manages both cellular and IP networks, then call delivery is improved, but system complexity increases
Solution Approach 1:
The HLR is enhanced to perform multiple functions: traditional cellular routing, Wi-Fi network routing, and intelligent decision-making between the two. By making the HLR universal and multi-functional, the system improves call delivery reliability without adding separate dedicated systems for each network type, thereby managing complexity through consolidation rather than proliferation of components.
Data Source
AI summary
Methods, systems, and apparatus can be used to provide call routing in converged networks. In various examples, a converged call routing system can be used determine routing information associated with an incoming connection request. Routing information can be based upon one or more of a current location of a communications device or a profile associated with a communications device.