Prefix Binding for Mobile IPv6 Handover Latency
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Solution Overview
Problem
Current mobile IPv6 protocols inadequately support frequent terminal movements and real-time service applications in wireless networks, as they only provide general mobility support.
Innovation Solution
A mobility supporting method and system that allocates a prefix to each mobile terminal through an access router, with registration in an authentication server, enabling seamless verification and connection maintenance across different access routers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If mobile IPv6 protocol is used for general mobility support, then basic mobility functionality is achieved, but frequent terminal movements and real-time service applications cannot be adequately supported
Solution Approach 1:
The patent segments the mobility support function into two distinct protocols: mobile IPv6 for general mobility and HMIPv6 for frequent movements and real-time services. This segmentation allows each protocol to be optimized for its specific purpose, with HMIPv6 providing enhanced rapid handover capabilities through hierarchical mobility management and local mobility anchors, thereby resolving the contradiction between general adaptability and specialized reliability for frequent movements.
2Duration of action of stationary object
If mobile IPv6 is used to maintain logical connections during movement, then basic connection continuity is achieved, but performance degradation occurs during frequent handovers
Solution Approach 1:
The HMIPv6 protocol performs preliminary actions by pre-establishing mobility binding caches and local mobility anchors before handovers occur. When a terminal moves frequently, the hierarchical structure allows rapid reattachment to nearby mobility anchors using pre-configured binding information, significantly reducing handover time and preventing connection interruption, thus resolving the contradiction between connection continuity and handover speed.
3Adaptability or versatility
If prefix allocation is performed by access router with authentication server verification, then mobility support is enhanced, but system complexity increases
Solution Approach 1:
The patent introduces an authentication server as an intermediary component that centralizes prefix allocation and verification functions. This intermediary manages the complex interactions between access routers and mobile terminals, handling authentication, prefix assignment, and mobility binding updates. By concentrating these functions in a dedicated intermediary system, the patent enhances mobility support effectiveness while managing system complexity through specialized component design rather than distributing complexity across all network elements.
Data Source
AI summary
A mobility supporting method and a mobility supporting system using the method are provided. The mobility supporting method includes a first access router for allocating a prefix to a mobile terminal, and registering the allocated prefix in an authentication server when the mobile terminal connects to the first access router. There is also the authentication server for verifying the mobile terminal based on the registered prefix, and reporting a result of the verifying of the mobile terminal to a second access router when the mobile terminal moves to connect to the second access router and the second access router for notifying the reported result of the verifying the mobile terminal to the first access router.