US 6,147,989 A · ATM communication system with high speed connection-less service function

Abstract

ATM communication system capable of realizing a high speed and efficient datagram delivery for the connection-less communication among the terminals in the ATM network. In the system formed by a plurality of ATM networks inter-networking with each other, each network containing a plurality of terminals, the ATM networks with connection-less service function units for managing a connection-less datagram transmission are provided in the ATM networks, and the connection-less datagram transmission from each terminal to a destination terminal is performed by resolving a connection identifier for identifying an ATM connection connected to a destination side connection-less service function unit associated with a destination side ATM network containing the destination terminal, and transmitting datagram from said each terminal to the destination side connection-less service function unit through the ATM connection identified by the resolved connection identifier.

Claims25

Dependent claims

A network system comprising:

a first network having a first connection-less service function unit;
a second network having a second connection-less service function unit;
a data transfer unit for specifying a first connection for a transfer at a layer lower than a network layer from the data transfer unit through the first and second networks to the second connection-less service function unit and for transferring a datagram onto the first connection when the datagram is to be transferred from a source terminal located on or beyond the first network from a viewpoint of the second network, through the first network to a destination terminal located on or beyond the second network from a viewpoint of the first network.

A data transfer apparatus in a network system including a first network having a first connection-less service function unit and a second network having a second connection-less service function unit, the apparatus being located on or beyond the first network from a viewpoint of the second network and comprising:

a connection specifying unit for specifying a first connection for a transfer at a layer lower than the network layer from the data transfer apparatus through the first and second networks to the second connection-less service function unit when a datagram is to be transferred from a source terminal located on or beyond the first network from a viewpoint of the second network, through the first network to a destination terminal located on or beyond the second network from a viewpoint of the first network;
and
a datagram transferring unit for transferring the datagram onto the first connection specified by the connection specifying unit.

Dependencies are inferred from the claim text.

ATM communication system with high speed connection-less service function

Life of this patent

ATM communication system with high speed connection-less service function

Life of this patent

Abstract

Claims25