Cross-Domain Address Assignment via Intermediary Segmentation
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Solution Overview
Problem
Existing network systems struggle with automatic address allocation across multiple administrative domains, as existing methods cannot efficiently assign addresses that can be used commonly between domains, especially when devices from different administrative domains communicate directly or through relay domains.
Innovation Solution
A domain control method and device that automatically assign addresses by specifying administrative domains on a communication route, acquiring available addresses for each protocol, and assigning a common address usable across domains, utilizing protocol layers and fixed address information to ensure reliable and efficient address allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If existing address allocation methods are used within single administrative domains, then address management is simple and controlled, but automatic address assignment across multiple administrative domains is not achieved
Solution Approach 1:
The patent segments the address management system into domain-specific address management units and a cross-domain address management unit. Each administrative domain maintains its own address management for internal devices, while the cross-domain unit handles address allocation spanning multiple domains. This segmentation allows automatic cross-domain address assignment while keeping individual domain management simple and controlled.
Solution Approach 2:
The patent introduces a cross-domain address management unit as an intermediary between multiple administrative domains. This intermediary receives address allocation requests, determines the involved domains, queries available addresses from each domain, and assigns addresses that work across all domains. The intermediary resolves the complexity of cross-domain management while maintaining automation.
2Adaptability or versatility
If addresses are allocated independently in each administrative domain, then domain autonomy is maintained, but addresses cannot be used commonly across domains
Solution Approach 1:
The patent implements a feedback mechanism where the cross-domain address management unit queries available address information from each administrative domain, processes this information to determine suitable addresses, and assigns addresses that are confirmed to be available in all involved domains. The system receives feedback about address availability and uses this information to make informed allocation decisions, ensuring addresses can be used commonly across domains without losing track of available addresses.
Solution Approach 2:
The patent creates a universal address allocation mechanism that works across multiple administrative domains. The cross-domain address management unit handles address allocation for devices that need to communicate across domain boundaries, making the address assignment system multi-functional rather than domain-specific. This allows the same address to be usable in multiple domains while maintaining each domain's autonomy.
3Productivity
If manual address configuration is used for cross-domain communication, then address accuracy is high, but communication setup time increases
Solution Approach 1:
The patent implements a self-service address allocation system where the cross-domain address management unit automatically queries available addresses from administrative domains, determines suitable addresses, and assigns them without manual intervention. The system serves itself by autonomously completing the entire address allocation process, from receiving requests to assigning and notifying devices of their addresses. This maintains high accuracy through systematic address selection while dramatically improving setup speed through automation.
Solution Approach 2:
The patent performs preliminary actions by pre-querying available address information from each administrative domain before actual address assignment is needed. The cross-domain address management unit gathers and analyzes address availability data in advance, preparing a pool of suitable addresses for future allocation requests. This preliminary preparation ensures accurate address assignment when needed while reducing the time required for actual communication setup.
Data Source
AI summary
An integrated control device, to implement automatic address assignment in a path spanning two or more administrative domains, and to implement communication between a plurality of administrative domains, acquires definition information that defines protocols used in each administrative domain from an inter-administrative domain communication protocol stack list table, acquires available addresses of each protocol in each administrative domain which can be used for communication between the respective administrative domains from an available address range table, acquires a communication route from a starting point administrative domain to an ending point administrative domain, specifies domains that use the respective protocols on the communication route by using the definition information, assigns protocol information such as available addresses of each protocol between the specified domains by using an available address range table and notifies the assigned address to each domain.