Control Device Location-Based Packet Routing
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Solution Overview
Problem
The existing method of managing mobile devices by separating identifiers and location information increases the cost of routing control, as the identifier and location information are managed by different addresses, making it difficult to maintain network connections when the connection point of a mobile device changes.
Innovation Solution
A communication system with a control device that stores location information for nodes and identifies the location of a terminal device based on this information to control packet forwarding routes, reducing the need to manage location information directly and thereby reducing the cost of routing control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the identifier and location information of a mobile device are managed by separate addresses, then the mobile device can maintain network connection when moving between connection points, but the cost of routing control increases
Solution Approach 1:
The patent merges the identifier and location information management into a unified address system. Instead of using separate addresses for identification and location (as in Mobile IP), the invention uses a single IP address that serves both purposes, eliminating the need for complex dual-address management and reducing routing control overhead while maintaining network connectivity during mobile device movement
2Productivity
If the IP address includes both identifier and location information, then routing control can be executed based on location information, but when the connection point changes the identification information changes making it difficult to maintain network connection
Solution Approach 1:
The patent segments the IP address structure into network portion and host portion, where the network portion serves as location information and the host portion serves as device identifier. This segmentation allows the network portion to change with location while the host portion remains constant, enabling both efficient location-based routing and stable device identification across different connection points
Data Source
AI summary
A communication system includes: a plurality of nodes each of which forwards a packet; a terminal device to establish a connection with at least one of the nodes, and to access a network through at least one of the nodes; and a control device to control a packet forwarding route in response to a request which is sent from at least one of the nodes to request for setting the packet forwarding route. The control device includes: a unit that stores a plurality of location information respectively corresponding to the respective nodes; a unit that receives the request sent from at least one of the nodes connected to the terminal device; and a unit that identifies a location of the terminal device based on the location information corresponding to the at least one of the nodes, and controls the packet forwarding route by using the location of the terminal device.