Distributed Local Mobility Anchors for PMIPv6 Triangle Routing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing Proxy Mobile IPv6 (PMIPv6) network suffers from inefficient routing due to the 'triangle routing problem', where data packets take an unnecessarily long path, causing delays and resource inefficiencies, as the home Local Mobility Anchor (LMA) is located in a different network from the mobile node and correspondent node, leading to prolonged communication paths.
Innovation Solution
Implementing a system with distributed Local Mobility Anchors (LMAs) in multiple networks, allowing data packets to be transmitted directly between these anchors, thereby bypassing the long data path and optimizing routing by establishing a direct access tunnel for subsequent transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single home Local Mobility Anchor (LMA) is used in PMIPv6 network, then mobility management is simplified, but routing efficiency deteriorates due to triangle routing problem
Solution Approach 1:
The patent segments the single home LMA function into multiple distributed local LMAs deployed across different networks. Each local LMA serves a specific geographic region, eliminating the need for all traffic to route through a single remote home LMA. This segmentation resolves the triangle routing problem by placing anchoring functions closer to mobile nodes, thereby improving routing efficiency while maintaining simplified mobility management through distributed architecture.
Solution Approach 2:
The patent introduces a spatial dimension to the LMA deployment by distributing LMAs across multiple geographic networks rather than concentrating them in a single home network. This dimensional change allows traffic to be anchored locally in the visited network, creating direct routing paths and eliminating the triangular route that previously existed between mobile node, correspondent node, and remote home LMA.
2Productivity
If distributed local mobility anchors are deployed in multiple networks, then routing efficiency is improved by eliminating triangle routing, but network complexity increases
Solution Approach 1:
The patent implements universal LMA functionality that can operate in both home and visited networks with identical protocols and procedures. Each distributed local LMA provides the same mobility anchoring services regardless of location, allowing the system to achieve improved routing efficiency without requiring complex location-specific logic. This universality simplifies the overall network architecture despite the distributed deployment.
Solution Approach 2:
The patent creates copies of the LMA function deployed in multiple networks rather than using a single centralized instance. These copied LMA functions operate independently but follow the same protocols, enabling local routing optimization without requiring complex inter-LMA coordination. The copying approach reduces network architecture complexity by using simple replication rather than sophisticated distributed systems management.
3Reliability
If home LMA is located in a different network from mobile node and correspondent node, then home network control is maintained, but communication delay increases due to prolonged data path
Solution Approach 1:
The patent applies local quality by deploying LMAs with different functional characteristics in different locations. Home network LMAs maintain control functions, while visited network LMAs provide local routing optimization. This local differentiation allows the system to maintain home network control while simultaneously reducing communication delays through locally-optimized routing paths that bypass the remote home LMA for data transmission.
Data Source
AI summary
A method and system for optimizing mobility routing are disclosed. A preferred embodiment comprises a home local mobility anchor and two or more distributed local mobility anchors, wherein the distributed local mobility anchors have a reduced functionality from the home local mobility anchor. A first distributed local mobility anchor may send an initial data packet from a correspondent node to the home local mobility anchor, which may route the initial data packet to a second distributed local mobility anchor where a mobile node is anchored while also sending the location of the mobile node back to the first distributed local mobility anchor. Subsequent packets can be sent by the first distributed local mobility anchor directly to the second distributed local mobility anchor and bypassing the home local mobility anchor.