Mobile Router Information Management Server
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Solution Overview
Problem
In mobile IP networks, the concentration of communication load on a home agent leads to increased equipment and maintenance costs, and network failures can prevent communication among all mobile routers, with issues arising from dynamic changes in care-of addresses and the need for centralized management of identification information.
Innovation Solution
A mobile router information management server and mobile routers that register and manage identification information for themselves and attached communication terminals, allowing direct data transfer between mobile routers without a home agent, and enabling connection establishment even with changes in communication terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If data transfer is carried out through a home agent in mobile IP networks, then centralized management and routing control are achieved, but communication load concentrates on the home agent leading to increased equipment and maintenance costs
Solution Approach 1:
The patent segments the centralized home agent function into distributed location information management across multiple mobile routers. Each mobile router maintains its own location information table, eliminating the single point of concentration and distributing the management load across the network infrastructure.
Solution Approach 2:
The patent extracts the location information management function from the home agent and relocates it to the mobile routers themselves. This extraction removes the burden from the home agent while preserving the necessary routing control capabilities at the edge devices.
2Ease of operation
If a home agent is used for data transfer among mobile routers, then routing control is centralized, but network failures at the home agent prevent communication among all mobile routers
Solution Approach 1:
The patent segments the routing control function from a single home agent and distributes it across multiple mobile routers. Each mobile router independently manages its own location information, creating multiple control points that can operate autonomously if one fails.
Solution Approach 2:
The patent implements redundancy by having each mobile router maintain its own location information table with alternative routing paths. This beforehand cushioning ensures that if one routing path or home agent fails, communication can continue through alternative routes without interruption.
3Adaptability or versatility
If care-of addresses are dynamically changed for mobile communication terminals, then mobility and flexibility are achieved, but connection establishment becomes difficult when addresses change
Solution Approach 1:
The patent implements a feedback mechanism where mobile routers periodically update their location information tables with current care-of addresses. This feedback loop ensures that routing information remains current even as terminals move and addresses change, maintaining connection capability without requiring manual intervention.
Solution Approach 2:
The patent performs preliminary registration of care-of addresses in location information tables before actual communication is needed. This preliminary action allows the network to proactively update routing information, so when a terminal moves and changes its address, the new address is already registered and ready for immediate connection establishment.
4Device complexity
If identification information of mobile communication terminals is centrally managed, then network control is simplified, but user settings become complex and network usability is limited
Solution Approach 1:
The patent enables mobile routers to autonomously manage their own location information and identification data without requiring centralized configuration or manual user settings. Each mobile router automatically maintains its location information table, eliminating complex user configuration tasks while preserving simplified network control.
Data Source
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AI summary
With the object of enabling data transfer between mobile routers without going through a home agent and establishing a connection to a destination mobile router even when mobile communication terminals equipped in the destination mobile router are changed at the time of initiating connection to the destination mobile router, a mobile router information management server has a mobile router registration information table that registers, for each mobile router, mobile router information that is reported from the mobile routers and that includes identification information of the mobile routers and identification information of mobile communication terminals equipped in the mobile routers, in response to inquiry information from a mobile router that includes identification information of another mobile router that is to be a communication destination, searches the mobile router registration information table, based on the identification information of the other mobile router, for mobile router information that includes identification information of mobile communication terminals equipped in the other mobile router, and returns the searched mobile router information to the mobile router.