Distributed Mobility Management Anchors for Mobile Node Handover
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Solution Overview
Problem
The existing Mobile Internet Protocol (MIP) systems face performance bottlenecks in the home network due to high signaling and data traffic, which complicates the design and increases the load on the Home Agent (HA) as it manages handovers and location management for multiple Mobile Nodes (MN).
Innovation Solution
A distributed mobility management system is introduced, where a Mobility Management Anchor (MMA) allocates IP addresses, binds identifier information, and manages communication and handovers for MNs, allowing direct communication between MNs and Correspondent Nodes (CNs) without relying on the home network's HA, using a distributed deployment mechanism and binding relationship tables across multiple MMAs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a Home Agent (HA) is applied to the home network to manage Mobile Nodes, then mobility management and location tracking are achieved, but the home network becomes a performance bottleneck due to high signaling and data traffic
Solution Approach 1:
The patent segments the mobility management function from the home network by introducing Foreign Agents (FAs) in visited networks. The HA retains only binding management responsibilities, while FAs handle local mobility management, packet forwarding, and signaling, effectively dividing the system into hierarchical layers that reduce home network burden.
Solution Approach 2:
The patent extracts the packet forwarding and signaling functions from the Home Agent and relocates them to Foreign Agents in visited networks. This extraction removes the performance bottleneck from the home network while preserving mobility management capabilities through the remaining binding management function of the HA.
2Quantity of substance
If multiple Home Agents are deployed to support more Mobile Nodes, then the capacity to manage MNs increases, but the home network remains a bottleneck for data traffic transmission and processing
Solution Approach 1:
The patent creates a hierarchical architecture where multiple Foreign Agents operate independently in different visited networks, each handling local MNs. This segmentation allows the system to scale horizontally by adding FAs without increasing home network traffic, as each FA manages its local bindings and forwarding independently.
Solution Approach 2:
The patent introduces a vertical dimension to mobility management by distributing FAs across multiple visited networks rather than concentrating all management functions in the home network. This dimensional distribution allows the system to support more MNs by adding FAs in new locations without overloading the home network infrastructure.
3Reliability
If the Home Agent manages both handover and location information for all Mobile Nodes, then comprehensive mobility control is achieved, but the design becomes complicated and the load on the HA increases
Solution Approach 1:
The patent divides HA responsibilities into two distinct functions: binding management (maintaining HoA-CoA mappings) and mobility management (handovers, location tracking). By delegating mobility management to FAs, the HA design simplifies to focusing only on binding management, reducing complexity while maintaining complete mobility control through coordinated FA-HA interaction.
Solution Approach 2:
The patent introduces Foreign Agents as intermediaries between Mobile Nodes and the Home Agent. FAs handle local handovers and location updates, acting as mediators that reduce the signaling burden on the HA. The HA receives simplified binding update messages from FAs rather than direct messages from every MN, reducing design complexity and load.
Data Source
AI summary
The present invention relates to mobile communication technologies, and discloses a method and an apparatus for registration, communication, and handover of a Mobile Node (MN). The present invention is intended to overcome the bottlenecks of data traffic and processing capability in the home network in the prior art. A distributed mobility management system is provided herein. The system includes at least two Mobility Management Anchors (MMAs): any two MMAs are interconnected; at least one terminal exists in each MMA connection; each MMA stores a terminal binding relationship table; and the terminal binding relationship table records identifiers (IDs) and Internet Protocol (IP) addresses of terminals. The distributed mobility management system under the present invention can balance load, improve the data processing capability, simplify the signaling interaction in various procedures, and improve the system processing capability.