US 5,042,027 AGranted

Communication network system and method of controlling a communication network

AssigneeHitachi, Ltd.

InventorsAkihiko Takase, Masahiro Takatori, Yoshiaki Takemura, Naoya Kobayashi, Yasushi Sawada, Yukio Nakano, Yasushi Takahashi, Masahiro Koya, Yoshitaka Takasaki

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Abstract

A communication network system includes a communication line, a plurality of communication stations each having a node coupled to the communication line and a network controller coupled to the stations for controlling routing for communication messages between nodes. In one embodiment, the messages are sent from plural terminals connected with each node along with communication performance prerequisites. The communication performance prerequisites for a communication message are discriminated in the node which receives the message. Traffic in various routes between the nodes is continually measured in the communication stations and the measuring results are stored in a database storage unit. Future traffic in the various routes is predicted on the basis of the information on the continually measured traffic by the use of a predetermined algorithm and stored in the storage unit for use in determination of routes for communication messages on the basis of the result of the communication performance prerequisites discrimination and predetermined criteria with respect to the updated information on the predicted traffic in the storage unit.

Claims21

Dependent claims

A communication network system comprising a communication line, a plurality of communication stations each having a respective node coupled to said communication line and means coupled to said communication stations for controlling routing of messages between said nodes, and each of said nodes being connected to a respective plurality of one or more terminals, in which:

at least one of said communication stations, said one communication station having a plurality of two or more terminals connected to its respective node, includes means for discriminating a communication performance prerequisite data indicative of communication performance prerequisites associated with a communication message to be sent from one terminal to another terminal via the node in said one station, and means for monitoring traffic in various routes between the node in said one station and nodes in other communication stations;
and
said routing controlling means includes a storage unit and a control unit, said control unit receiving information on said monitored traffic from said communication stations, storing the received information in said storage unit, predicting future traffic in said routes on the basis of the information on said monitored traffic by the use of a predetermined algorithm, storing information on said predicted future traffic in said storage unit, said predicted future traffic information being updated by the use of latest stored information on monitored traffic, and determining routes for communication messages on the basis of an output of said communication performance prerequisite data discriminating means and the updated information on said predicted traffic in said storage unit.

A method of controlling a communication network including a communication line and a plurality of communication stations each having a respective node coupled to said communication line, comprising the steps of:

monitoring, in each of said communication stations, traffic in routes between the node in each said station and nodes in other communication stations;
storing information on said monitored traffic in a storage unit;
predicting, in each of said stations, future traffic in said routes on the basis of the information on said monitored traffic by the use of a predetermined algorithm and storing information on the predicted future traffic information being updated by the use of latest stored information on monitored traffic;
discriminating, in the node in any one of said communication stations, a communication performance prerequisite data indicative of communication performance prerequisites associated with a communication message to be sent from a terminal to another terminal via the node in said any one communication station;
determining a route for said communication message on the basis of a result of said prerequisite data discrimination and the updated information on said predicted traffic in said storage unit;
and
establishing said determined route for said communication message.

4 more elements

Dependencies are inferred from the claim text.