Unified Mobility Gateway for Seamless IP Cellular Handover
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Solution Overview
Problem
Current mobility solutions face inefficiencies due to multiple gateways and tunnelling protocols, making it difficult to maintain connection sessions across different mobility technologies, particularly over cellular access, and require complex configuration for Mobile IPv4 clients.
Innovation Solution
A gateway and terminal system that supports multiple connection session types, sharing a common mobility session across different protocols, allowing seamless updates and parameter association to ensure session continuity even when switching between mobility technologies like GPRS and Mobile IP.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple mobility solutions are implemented, then mobility versatility is improved, but device complexity increases due to multiple gateways and tunnelling protocols
Solution Approach 1:
The patent combines multiple mobility solutions (IP-based and cellular-based) into a single gateway that can handle both Mobile IPv4 and cellular mobility protocols simultaneously. This merging eliminates the need for separate gateways for each mobility type, reducing overall system complexity while maintaining versatility.
Solution Approach 2:
The gateway is designed with multi-functionality to support multiple connection session types (e.g., GPRS, WCDMA, Mobile IPv4) through a single unified interface. It can dynamically select and switch between different mobility protocols based on the terminal's current access type, making the gateway universal rather than protocol-specific.
2Adaptability or versatility
If multiple tunnelling protocols are used for different mobility solutions, then mobility protocol support is improved, but traffic overhead increases
Solution Approach 1:
The gateway implements dynamic protocol selection based on the terminal's current access type. When the terminal switches between cellular and IP-based access, the gateway dynamically adjusts which mobility protocol to use, avoiding the need to maintain multiple simultaneous tunnelling connections and reducing traffic overhead.
Solution Approach 2:
The gateway acts as an intermediary that translates between different mobility protocols. It receives mobility management messages from the terminal in one protocol format and internally translates them to the appropriate format for network processing, eliminating the need for multiple separate tunnelling protocols.
3Adaptability or versatility
If separate gateway selection mechanisms are used for each mobility solution, then protocol independence is improved, but session continuity deteriorates when switching between access types
Solution Approach 1:
The gateway separates the mobility management function from the access-specific protocols. It maintains a unified mobility session context that is independent of the access type, while allowing different access technologies to connect through standardized interfaces. This segmentation enables seamless handover between access types without breaking the mobility session.
4Adaptability or versatility
If Mobile IPv4 configuration methods are implemented, then IP mobility functionality is improved, but configuration complexity increases for clients
Solution Approach 1:
The gateway enables self-service configuration for Mobile IPv4 clients by automatically providing necessary configuration parameters (such as home agent address and care-of address) during the attachment process. The terminal can autonomously configure itself without requiring manual intervention or complex configuration procedures.
Data Source
AI summary
The invention proposes a system for providing mobility to a terminal through at least two different mobility protocols, wherein a mobility gateway and a terminal share a common mobility session, said common mobility session can be updated through any of the said different mobility protocols, and each mobility protocol provides information to the terminal related to all other mobility protocol during a registration. The invention also proposes a corresponding gateway, a terminal and method.