Peer Mobile Router Authentication via Home Agent
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Solution Overview
Problem
Existing methods for authenticating peer mobile routers in multi-homed mobile networks are unstable due to the mobility of mobile routers, which affects seamless mobility and load distribution in NEMO networks.
Innovation Solution
A method where a mobile router authenticates a peer mobile router through a home agent, using a peer mobile router authentication process that includes a PMR request, PMR authentication request, and Return Routability authentication, establishing a stable peer relationship and enabling multiple Care-of Addresses registration for seamless service and load distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If mobile routers perform direct Return Routability authentication with each other, then authentication can be performed peer-to-peer, but authentication stability deteriorates due to router mobility
Solution Approach 1:
The patent introduces a Home Agent as an intermediary between mobile routers for authentication. Instead of direct peer-to-peer Return Routability authentication which is unstable due to mobility, the mobile router authenticates with the Home Agent which then facilitates authentication with peer mobile routers. This mediator approach stabilizes the authentication process while maintaining peer interaction capability.
2Device complexity
If only one primary Care-of Address is registered, then the mobile IPv6 protocol remains simple, but seamless mobility and load distribution cannot be supported
Solution Approach 1:
The patent enables dynamic registration and management of multiple Care-of Addresses at the mobile router. The system can dynamically add, remove, or update CoAs based on network conditions and mobility requirements, allowing seamless mobility and load distribution while maintaining manageable complexity through structured protocols.
Solution Approach 2:
The patent segments the Care-of Address management by allowing multiple independent CoA registrations instead of a single unified address. Each CoA can be managed independently with its own binding cache entry, enabling load distribution across multiple addresses while maintaining clear protocol structures for each segment.
3Reliability
If multiple Care-of Addresses are registered, then seamless mobility and load distribution are enabled, but the binding update protocol complexity increases
Solution Approach 1:
The patent performs preliminary actions by establishing binding cache entries for multiple Care-of Addresses in advance. The Home Agent pre-configures and maintains multiple CoA bindings, so when mobility or load distribution is needed, the system can switch between addresses without complex real-time protocol negotiations, reducing operational complexity.
Data Source
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AI summary
Provided are a peer MR authentication method, a multiple peer CoAs registration method, a failover method for multi-homed mobile networks, and a computer readable recording medium thereof. The registering method includes the steps of : a) determining whether a second MR is around a first MR; b) at the first MR, transmitting a peer request message to the second MR; c) at the first MR, requesting a HA of the first MR to authenticate the second MR; d) at the HA, transmitting a peer registering request message to the second MR with a prefix of the first MR that transmit the authentication request message to perform RR authentication; and e) at the HA, notifying the authentication result of the second MR to the first MR when receiving a RR authentication result message including the prefix of the first MR to be registered as a peer from the second MR.