Distributed Local Mobility Anchors for PMIPv6 Triangle Routing
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Solution Overview
Problem
The existing Proxy Mobile Internet Protocol (PMIPv6) network faces inefficiencies due to the 'triangle routing problem', where data packets take an unnecessarily long path, causing delays and inefficient routing, especially when communicating between separate network systems or domains.
Innovation Solution
Implementing a distributed local mobility anchor architecture that allows data packets to bypass the long path by using ingress/egress points and distributed local mobility anchors to route data packets directly to their destination, optimizing data paths and resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single home LMA is used in PMIPv6 network, then mobility management is simplified, but data transmission path becomes long causing delays
Solution Approach 1:
The patent segments the single home LMA into multiple distributed local mobility anchors (D-LMAs) placed in different networks. This segmentation allows data packets to be routed through geographically closer D-LMAs, reducing transmission distance and delay while maintaining the simplified mobility management benefits of PMIPv6.
Solution Approach 2:
The patent introduces foreign LMAs as intermediary nodes between the home LMA and mobile nodes in visited networks. These foreign LMAs act as mediators that can directly route data packets to mobile nodes without requiring traversal through the home LMA, thus reducing transmission delay while the home LMA continues to manage mobility bindings.
2Ease of operation
If data packets route through home LMA, then binding management is simplified, but routing efficiency decreases
Solution Approach 1:
The patent implements local quality by allowing foreign LMAs in visited networks to perform local data packet routing and forwarding. Each LMA operates with local autonomy to handle data transmission efficiently, while the home LMA maintains centralized binding management. This division optimizes both routing efficiency and binding management.
Solution Approach 2:
The patent performs preliminary action by pre-establishing binding entries in foreign LMAs before data transmission occurs. When a mobile node moves to a visited network, the foreign LMA proactively obtains binding information from the home LMA and stores it locally, enabling direct data routing without real-time home LMA involvement, thus improving transmission efficiency.
3Device complexity
If single LMA architecture is used, then network configuration is simplified, but inter-network communication efficiency is reduced
Solution Approach 1:
The patent transitions from a single-dimension (single home LMA) architecture to a multi-dimensional distributed LMA architecture. D-LMAs are distributed across multiple networks and dimensions of the network topology, allowing data packets to be routed through optimal paths across different network domains, thereby improving inter-network communication speed while maintaining manageable complexity through standardized interfaces.
Data Source
AI summary
A method and system for optimizing mobility routing are disclosed. A preferred embodiment comprises a first system of networks that comprise a home local mobility anchor and two or more distributed local mobility anchors, and a second system of networks separate from the first system of networks. Packets of data may be transmitted from a correspondent node anchored in the second system of networks to a mobile node anchored in the second system. Additionally, packets of data may be transmitted from the mobile node to the correspondent node.