Dynamic LMA Registration for Load Balancing

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Solution Overview

Problem

The existing Proxy Mobile Internet Protocol (PMIP) domain registration process fails to support network sharing and load balancing, leading to mobility service disruptions when LMAs are overloaded or local management policies change, causing MNs to regress to IPv6 service or be rejected.

Innovation Solution

A method and system for dynamic registration with LMAs that involves selecting a new local device based on load-related information and redirection indications, enabling network sharing and load balancing by redistributing registration requests among multiple LMAs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a single LMA is used for registration, then the registration process is simple, but network sharing and load balancing cannot be supported

Engineering Contradiction:
Improvenetwork sharing and load balancing capabilityVSAvoidregistration process complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent segments the LMA function into multiple LMAs that can handle registration requests independently. The MAG maintains a list of multiple LMAs and distributes registration requests among them, enabling load balancing while maintaining the simplicity of the PMIP registration process. Each LMA operates as an independent unit with similar functionality, allowing the system to scale without increasing per-node complexity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces dynamic selection of LMAs based on real-time conditions. The MAG can dynamically choose which LMA to register with based on factors like LMA availability, load conditions, or policy changes. This dynamic approach enables the system to adapt to changing network conditions without requiring complex static configuration, supporting both network sharing and load balancing while keeping the registration process relatively simple.

Inventive Principle:
Principle #15Dynamics

2Reliability

If registration fails due to LMA overload, then the MN can regress to IPv6 service, but mobility service continuity is disrupted

Engineering Contradiction:
Improvemobility service continuityVSAvoidregistration success rate
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The patent implements preliminary action by having the MAG maintain a pre-configured list of multiple LMAs before registration is needed. When registration is required, the MAG can immediately try alternative LMAs if the primary one is unavailable, rather than waiting for failure before attempting alternatives. This pre-prepared list of backup LMAs ensures continuous mobility service by preventing registration failures from disrupting service continuity.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent introduces the MAG as an intermediary that handles the complexity of LMA selection and registration failures. Instead of the MN directly dealing with LMA availability issues, the MAG acts as a mediator that manages the list of LMAs, selects appropriate targets, and handles registration failures gracefully. This intermediary approach maintains mobility service continuity by absorbing the complexity of LMA management and providing seamless failover to backup LMAs.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Productivity

If multiple LMAs are used for registration, then load balancing is enabled, but the registration process becomes more complex

Engineering Contradiction:
Improveload balancing efficiencyVSAvoidregistration process complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent implements self-service by enabling the MAG to autonomously manage the LMA selection process without requiring MN intervention or complex external control. The MAG maintains its own list of LMAs, automatically selects appropriate targets based on local conditions, and handles registration failures independently. This self-service approach enables efficient load balancing across multiple LMAs while keeping the registration process simple from the MN perspective, as the MAG handles all the complexity itself.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS9179286B2Method, system, and device for registering with local mobility anchors
Publication Date: 2015.11.03 HUAWEI TECH CO LTD
  • US9179286B2 patent drawing
  • US9179286B2 patent drawing
  • US9179286B2 patent drawing

AI summary

A method, system and device for registering with a Local Mobility Anchor (LMA) are disclosed. The method includes: receiving a message from at least one local device; selecting a new local device according to the message; and registering with the new local device. The present invention enables dynamic registration with the LMA based on the network. In the Proxy Mobile Internet Protocol (PMIP) domain, network sharing and load balancing are properly supported, the network is more reliable, and it is convenient for the operator to deploy the network massively.