Mobile Node Prefix Management via Cost-Based Release
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Solution Overview
Problem
Current mobility management schemes in wireless mobile communications suffer from poor performance, scalability, and failure modes due to centralization and statefulness, particularly in managing IP addresses for mobile nodes (MNs), leading to inefficiencies and increased costs in routing packets.
Innovation Solution
A system and method where mobile nodes (MNs) receive servable prefixes and associated costs from routers, allowing them to decide whether to release or retain these prefixes based on resource usage, optimizing route performance and reducing costs by evaluating and managing prefixes on a case-by-case basis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If centralized mobility management with anchor points is used, then mobility management is simplified and controlled, but performance deteriorates and scalability is poor due to centralization and statefulness
Solution Approach 1:
The patent segments mobility management by distributing prefix management responsibilities from centralized anchor points to individual routers. Each router independently manages prefixes assigned to mobile nodes in its jurisdiction, eliminating the single-point bottleneck and improving both performance and scalability while maintaining controlled mobility management through structured prefix assignment and cost-based decision-making frameworks.
2Ease of operation
If centralized mobility management with anchor points is used, then mobility management is simplified and controlled, but scalability deteriorates due to centralization and statefulness
Solution Approach 1:
The patent segments mobility management by distributing prefix management responsibilities from centralized anchor points to individual routers. Each router independently manages prefixes assigned to mobile nodes in its jurisdiction, eliminating the single-point bottleneck and improving both performance and scalability while maintaining controlled mobility management through structured prefix assignment and cost-based decision-making frameworks.
Solution Approach 2:
Mobile nodes autonomously evaluate prefix costs and make binding decisions about which prefixes to retain or release based on their own communication patterns and cost considerations. This self-service approach eliminates the need for centralized state tracking while maintaining controlled mobility management through the structured prefix assignment framework and cost information provided by routers.
3Adaptability or versatility
If mobile nodes retain all assigned prefixes, then routing flexibility is maintained, but resource usage increases and costs rise
Solution Approach 1:
The patent introduces cost parameters associated with each prefix that reflect the resource usage and routing efficiency. Mobile nodes use these cost parameters to dynamically evaluate and select prefixes, changing their prefix retention decisions based on cost considerations. This allows nodes to maintain routing flexibility for critical prefixes while releasing high-cost prefixes, optimizing the balance between flexibility and resource usage.
Solution Approach 2:
Mobile nodes selectively discard prefixes that are no longer cost-effective to maintain, particularly when alternative prefixes with lower costs are available. The node can recover or reassign prefixes as needed based on changing communication patterns and cost conditions, allowing dynamic optimization of resource usage while maintaining necessary routing flexibility.
4Stability of the object's composition
If mobile nodes use old addresses for ongoing connections, then connection stability is maintained, but network costs increase due to suboptimal routing
Solution Approach 1:
The patent introduces cost parameters associated with each prefix that reflect the resource usage and routing efficiency. Mobile nodes use these cost parameters to dynamically evaluate and select prefixes, changing their prefix retention decisions based on cost considerations. This allows nodes to maintain routing flexibility for critical prefixes while releasing high-cost prefixes, optimizing the balance between flexibility and resource usage.
Data Source
AI summary
A method for managing prefixes of a mobile node (MN) includes receiving a servable prefix and a cost associated with the servable prefix from a first router serving the MN, wherein the servable prefix is one of a plurality of prefixes assigned to the MN that is servable by the first router, deciding whether to release the servable prefix through the first router in accordance with the cost associated with the servable prefix, and releasing the servable prefix when the MN has decided to release the servable prefix.