MPLS Micro-Mobility Protocol Eliminates Static Home Agent
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Solution Overview
Problem
Existing mobile IPv6 solutions require significant signaling overhead and rely on static home agents for mobility management, which limits efficiency and flexibility, especially in micro-mobility scenarios within networks.
Innovation Solution
Implementing a network-based micro-mobility protocol using Multi-Protocol Label Switching (MPLS) that establishes a bidirectional Label Switch Path (LSP) between a mobility anchor point and the mobile node's access router, eliminating the need for a static home agent and reducing signaling and tunneling overhead by separating identifiers and locators, allowing dynamic setup of dedicated paths for traffic engineering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mobile IPv6 uses a static home agent node with IP in IP tunneling for mobility management, then mobility can be maintained, but signaling overhead and tunneling overhead increase significantly
Solution Approach 1:
The patent extracts and removes the static home agent component from the mobility management system. Instead of using a dedicated home agent node, the mobile node itself assumes the home agent functionality, eliminating the need for separate home agent signaling and reducing overall signaling overhead in the network.
Solution Approach 2:
The patent introduces a foreign agent as an intermediary component that assists in mobility management when the mobile node is in a foreign network. The foreign agent handles local mobility management tasks, reducing the need for direct signaling between the mobile node and home agent, thereby reducing signaling overhead.
2Reliability
If mobile IPv6 uses a static home agent node with IP in IP tunneling, then mobility management is possible, but the system complexity increases due to tunneling requirements
Solution Approach 1:
The patent removes the IP in IP tunneling mechanism from the system. By allowing the mobile node to assume home agent functionality and using direct routing with care-of addresses, the complex tunneling infrastructure is eliminated, reducing system complexity while maintaining mobility management capabilities.
3Adaptability or versatility
If variations of mobile IPv6 (FMIP, HMIP, RMIP) are used for local micro mobility, then mobility within domains is enabled, but significant signaling overhead is generated
Solution Approach 1:
The patent implements self-service mobility management where the mobile node autonomously manages its own mobility without requiring complex signaling to external mobility management entities. The mobile node uses its care-of address to directly route packets, eliminating the need for signaling overhead associated with FMIP, HMIP, or RMIP variations.
Data Source
AI summary
A method performed by a network element for providing micro-mobility in a network to a mobile node including the steps of receiving a registration request message at the mobility anchor point from an access router that is currently coupled to the mobile node, wherein the registration request message includes an endpoint identifier of the mobile node and a local care-of address of the mobile node, establishing a label switch path (LSP) between the mobility anchor point and the access router, storing the endpoint identifier in a binding entry along with the local care-of address, a regional care-of address, the label switch path and an egress interface, advertising the endpoint identifier with associated regional or local care-of address of the mobile node, and forwarding data packets, received at the mobility anchor point from a corresponding node that have the regional or local care-of address, to the mobile node using the LSP.