Patent ID: 7573878

Claim:
A network control device for a network system including a plurality of sub-networks having different kinds of network architectures and a plurality of network nodes, the network control device comprising: a relay service efficiency promoting section which reduces physical and procedural constraints on a gateway mechanism at the time when the gateway mechanism executes a service of relaying at least one of a message, a dialog and a response directed to link objects operating on network nodes belonging to said sub-networks in the network system, each said relay service efficiency promoting section having a service registry provided on said gateway to store information necessary for accessing a service on another sub-network, wherein said service registry shares said information autonomously with another service registry in another network control device belonging to another sub-network by transmitting said information to each other wherein said plurality of sub-networks comprise an information system network, an operation system network, a wireless interconnect and a plurality of lines of portable apparatus interconnects, wherein a plurality of service nodes having a gateway function and a first and a second gateways connected with each other are connected to said information system network, wherein said second gateway and a plurality of service nodes are connected to said operation system network, wherein said first gateway and an additional service node, other than said service nodes, are connected to said wireless interconnect, and wherein a plurality of portable apparatuses are connected to the plurality of lines of portable apparatus interconnects.