Network control device and control method and program thereof

• US 20040081178A1
• Filed: 10/23/2003
• Published: 04/29/2004
• Est. Priority Date: 10/25/2002
• Status: Active Grant

• Current Assignee: Renesas Electronics Corporation
• Original Assignee: NEC Electronics Corporation (Renesas Electronics Corporation)
• Inventors: Fujimori, Takashi
• Granted Patent: US 7,573,878 B2
• Time in Patent Office: Days
• US Class Current: 370/401
• CPC Class Codes: H04Q 3/0058 using service-independent building blocks (SIBBs) or "primitives"

Abstract

A system including sub-networks mounted with different kinds of protocols/profiles, a gate way/proxy for connecting the sub-networks, a gate way/proxy for connecting the sub-networks, and nodes on the sub-networks, the gateway/proxy being mounted with processing of a physical layer and a data link layer as a protocol of the sub-network and processing of a physical layer and a data link layer as a protocol of the sub-network and having a common transport layer and a service proxy and a client proxy shared by the sub-networks.

Claims

1. A network control device, wherein

a network system is formed of sub-networks having different kinds of network architectures, and which comprises:

a relay service efficiency promoting section which reduces physical constraints on a gate way mechanism and on a procedure of the mechanism at the time of executes a service of relays a message, an argument and a response in the network for the linkage of objects operating on network nodes belonging to said sub-networks,

said relay service efficiency promoting section having a service registry provided on said gate way to store information necessary for accessing a service on other sub-network.

2. The network control device as set forth in claim 1, wherein

said relay service efficiency promoting section has a service proxy provided on said gate way, said service proxy having a mechanism of relaying and standing proxy for processing to be executed at the time of requesting processing from a service on other sub-network.

3. The network control device as set forth in claim 2, wherein

said service registries on said plurality of sub-networks share service information autonomously with each other.

4. The network control device as set forth in claim 1, wherein

said relay service efficiency promoting section has a function of analyzing a service request and conducting message conversion on said gate way.

5. The network control device as set forth in claim 1, wherein

said sub-network is formed of an information system network, an operation system network, a wireless interconnect and a plurality of lines of portable apparatus interconnects.

6. The network control device as set forth in claim 5, wherein

connected to said information system network are a plurality of service nodes, a plurality of service nodes having a gate way function and first and second gate ways connected with each other, connected to said operation system network are said second gate way and a plurality of service nodes, connected to said wireless interconnect are said first gate way and other service node than said service nodes, and respectively connected to the plurality of said portable apparatus interconnects are portable apparatuses.

7. A network control device, wherein

a network system is formed of sub-networks having different kinds of network architectures, and which comprises:

a relay service efficiency promoting section which reduces physical constraints on a gate way mechanism and on a procedure of the mechanism at the time of executes a service of relaying a message, an argument and a response in the network for the linkage of objects operating on network nodes belonging to said sub-networks,

said relay service efficiency promoting section, in a case where relaying is conducted between said sub-networks connected in cascade, having a message transfer mechanism.

8. The network control device as set forth in claim 7, wherein

said sub-network is formed of an information system network, an operation system network, a wireless interconnect and a plurality of lines of portable apparatus interconnects.

9. The network control device as set forth in claim 8, wherein

connected to said information system network are a plurality of service nodes, a plurality of service nodes having a gate way function and first and second gate ways connected with each other, connected to said operation system network are said second gate way and a plurality of service nodes, connected to said wireless interconnect are said first gate way and other service node than said service nodes, and respectively connected to the plurality of said portable apparatus interconnects are portable apparatuses.

10. A network control device, wherein

a network system is formed of sub-networks having different kinds of network architectures, and which comprises:

a relay service efficiency promoting section which reduces physical constraints on a gate way mechanism and on a procedure of the mechanism at the time of executes a service of relaying a message, an argument and a response in the network for the linkage of objects operating on network nodes belonging to said sub-networks,

said relay service efficiency promoting section having a virtual machine as a mechanism for executing a portable code independent of execution environments mounted on said gate way and having a function of loading and executing a protocol-dependent portion of a service proxy through the network.

11. The network control device as set forth in claim 10, wherein

said sub-network is formed of an information system network, an operation system network, a wireless interconnect and a plurality of lines of portable apparatus interconnects.

12. The network control device as set forth in claim 11, wherein

connected to said information system network are a plurality of service nodes, a plurality of service nodes having a gate way function and first and second gate ways connected with each other, connected to said operation system network are said second gate way and a plurality of service nodes, connected to said wireless interconnect are said first gate way and other service node than said service nodes, and respectively connected to the plurality of said portable apparatus interconnects are portable apparatuses.

13. A network control device, comprising:

a sub-network node formed of an information system network, an operation system network, a wireless interconnect and a plurality of lines of portable apparatus interconnects, first, second and third sub-networks mounted with different kinds of protocols/profiles, a first gate way/proxy which connects said first and said third sub-networks and a second gate way/proxy which connects said second and said third sub-networks, wherein

processing of a physical layer and a data link layer is mounted as protocols of said first, said second and said third sub-networks, and which further comprises;

a common transport layer, and a service proxy and a client proxy shared by said first and said third sub-networks.

14. The network control device as set forth in claim 13, wherein

first and second service message conversion processing and message forwarding processing are mounted which are operable in response to connection between said first, said second and said third sub-networks under the control of said service proxy and said client proxy.

15. The network control device as set forth in claim 13, wherein

a property holding service registry for a service existing on the network formed of said first, said second and said third sub-networks is arranged on each of said first and said second gate ways.

16. The network control device as set forth in claim 13, wherein

said first and said second gate way proxies have portions for executing processing dependent on a service of said service proxy described with a portable code independent of execution environments and include a virtual machine/execution environment for executing said service-dependent processing as set forth in the description.

17. A network control method, wherein

a network system is formed of sub-networks having different kinds of network architectures, and

a relay service efficiency promoting section which reduces physical constraints on a gate way mechanism and on a procedure of the mechanism at the time of executes a service of relays a message, an argument and a response in the network for the linkage of objects operating on network nodes belonging to said sub-networks, and which comprises:

a network initialization step by said relay service efficiency promoting section, in a case where relaying is conducted between said sub-networks connected in cascade, of conducting setting or determination of a physical layer address, determination of a logical address in said sub-network, activation of a network management service and activation of an applied service as set forth in a network initialization procedure defined for each said sub-network by using a message transfer mechanism,

a service registration step of registering a service to be brought to be public among services of said sub-networks to other sub-network,

a service using step of using a registered service, and

a service registration erasing step of erasing registration of said service after the use of said service.

18. The network control method as set forth in claim 17, wherein

said service registration step includes processing of a procedure on a service node in which a service to be registered is included and processing of a procedure of a service registry on a gate way node paired with the service node.

19. The network control method as set forth in claim 18, wherein

said processing of a procedure on the service node includes:

a step of confirming that the service in question is already registered in a service registry node,

a registry registration initialization step to be conducted with respect to said service node when the registration is yet to be completed,

a step of transmitting a service registry registration request to said service registry node, and

a step of, upon receiving a registration request acceptance notification from said service registry node, transmitting registry registration information to said service registry node and when other service exists which is to be registered among services belonging to the node, repeating the same processing to end the registration when the processing is completed.

20. The network control method as set forth in claim 18, wherein

said service registry procedure processing includes:

a registry registration initialization step to be conducted by said service registry node after activation,

a step of waiting for a registry registration request from said service node,

a step of receiving a service registration request transmitted from said service node side to accept the registration request,

a step of notifying said service node as a requesting source that registration of the service is possible to execute registry registration of receiving registry registration information from said service node side and issuing a registration completion notification to said service node side, and

a step of, upon completion of registration of all the services to be brought to be public to other sub-network among said sub-networks, transmitting information, out of the contents, to be held in a service registry on other sub-network to the service registry in question to end the processing.

21. The network control method as set forth in claim 18, wherein

said service using processing includes a service using step of a service using node, a service search step in a service registry on a service using side sub-network, a service using step of a user side service proxy, a service using step of a service providing side service proxy and a service using step of a service providing side service node.

22. The network control method as set forth in claim 21, wherein

said service using processing of a service using node includes the steps of:

transmitting a service search request to a service registry for the search of a service to be used with the entire network as a target,

selecting a service optimum for a purpose among service information of a search result received from said service registry to determine the service and a proxy on the corresponding owned sub-network,

issuing a service request to the determined service proxy from the service using node to wait for return of a result of the service thereafter,

upon return of a result of said service from said service proxy, referring to the contents to proceed with the processing, and

repeating the same processing when requesting the same service again and ending the processing when the service is not used.

23. The network control method as set forth in claim 22, wherein

said processing of waiting for a service result to be returned includes issuance of a service request to said determined service proxy from the service using node as well as issuance of information corresponding to a necessary argument.

24. The network control method as set forth in claim 21, wherein

said service search processing in said service registry includes the steps of:

receiving said service search request from said service using node by said service registry on the user side to search for registry information in the owned node,

returning service information relevant to a search key obtained as a result of the search to software of said service using node, and

completing the search by said service registry to again wait for a next search request.

25. The network control method as set forth in claim 21, wherein

said service using processing includes:

a service using step at the user side service proxy for linking services on different sub-networks, and

a service using step at the provider side service proxy.

26. The network control method as set forth in claim 21, wherein

until the end of the service, said service using processing at said user side service proxy continues:

a step of monitoring a service request made from a node in a sub-network belonging to said service using side proxy,

a step by said user side service proxy of, upon receiving a service request, interpreting the service request and after conducting predetermined message conversion, transferring the message to a provider side service proxy to which a node providing the service in question belongs and monitoring arrival of a service execution result after the transfer, and

a step of, upon receiving said service execution result from said provider side service proxy, conducting message conversion to transmit the message to a service proxy designated by the service requesting side node.

27. The network control method as set forth in claim 21, wherein

until the end of the service, said service using processing at said provider side service proxy continues the steps of:

monitoring a service request made from said user side service proxy,

upon receiving said service request, interpreting the service request, converting the request into a message system on the owned sub-network and transferring the message to a provider side node,

thereafter monitoring arrival of a service execution result from said provider side node, and

upon receiving said service execution result, converting the result into a message to transmit the message toward a service proxy designated by said service requesting node.

28. The network control method as set forth in claim 21, wherein

the service using processing of the service provider side service node includes the steps of:

monitoring arrival of a service request,

upon arrival of said service request, interpreting a request message to execute a service to be provided, and

returning an execution result to a service proxy on a transmission source'"'"'s own sub-network to end the steps of one service request.

30. The network control method as set forth in claim 19, wherein

with a virtual machine as a mechanism for executing a predetermined portable code mounted on the gate way, when a function of loading and executing a protocol-dependent portion of a service proxy on said gate way through the network is provided, said processing of a procedure on the service node includes:

a step of confirming that the service in question is already registered,

an initialization step of registration in a registry and registration of service-dependent processing codes of said service proxy and client proxy to be conducted with respect to said service node when the registration is yet to be completed,

a step of transmitting a service registry registration request to said service registry node, and

a step of, upon receiving a registration request acceptance notification from said service registry node, transmitting registry registration information and the portable codes of the service-dependent processing of the service proxy and the client proxy to said service registry node and when other service exists which is to be registered among services belonging to the node, repeating the same step to end the registration when the step is completed.

31. The network control method as set forth in claim 18, wherein

said service registry procedure step includes:

a registry registration initialization step to be conducted by said service registry node after activation,

a step of waiting for a registry registration request from said service node,

a step of receiving a service registration request transmitted from said service node side to accept the registration request,

a step of notifying said service node as a requesting source that registration of the service is possible to execute each service registry and client registry registration of receiving registry registration information and a portable code of service-dependent processing of a service proxy and a client proxy from said service node side and issuing a registration completion notification to said service node side, and

a step of, upon completion of registration of all the services to be brought to be public to other sub-network among said sub-networks, transmitting information, out of the contents, to be held in a service registry on other sub-network to the service registry in question, as well as transmitting the portable codes of said service proxy and client proxy to the corresponding said service proxy and said client proxy to end the processing.

29. A network control method, wherein

a network system is formed of sub-networks having different kinds of network architectures, and which comprises:

a relay service efficiency promoting section which reduces physical constraints on a gate way mechanism and on a procedure of the mechanism at the time of executes a service of relaying a message, an argument and a response in the network for the linkage of objects operating on network nodes belonging to said sub-networks, and wherein

said relay service efficiency promoting section, in a case where relaying is conducted between said sub-networks connected in cascade, by a message forwarding function included in the message transfer mechanism, sends a converted message to a target sub-network at the time of service linkage between sub-networks not directly connected in terms of network topology to conduct a service between a service using node and a service providing node on the target sub-network without repeating message conversion.

32. A program which causes a computer to execute procedure processing on a service node, comprising:

a function of confirming that a service in question is already registered in a registry,

a registry registration initialization function to be conducted with respect to a service node when the registration is yet to be completed,

a function of transmitting a service registry registration request to a service registry node, and

a function of, upon receiving a registration request acceptance notification from said service registry node, transmitting registry registration information to said service registry node and when other service exists which is to be registered among services belonging to the node, repeating the same processing to end the registration when the processing is completed.

33. A program which causes a computer to execute procedure processing of a service registry, comprising:

a registry registration initialization function to be conducted by a service registry node after activation,

a function of waiting for a registry registration request from a service node,

a function of receiving a service registration request transmitted from said service node side to accept the registration request,

a function of notifying said service node as a requesting source that registration of the service is possible to execute registry registration of receiving registry registration information from said service node side and issuing a registration completion notification to said service node side, and a function of, upon completion of registration of all the services to be brought to be public to other sub-network among said sub-networks, transmitting information, out of the contents, to be held in a service registry on other sub-network to the service registry in question to end the processing.

34. A program which causes a computer to execute service using processing of a service using node, comprising the functions of:

transmitting a service search request to a service registry for the search of a service to be used with the entire network as a target,

selecting a service optimum for a purpose among service information of a search result received from said service registry to determine the service and a proxy on the corresponding owned sub-network,

issuing a service request to the determined service proxy from the service using node to wait for return of a result of the service thereafter,

upon return of a result of said service from said service proxy, referring to the contents to proceed with the processing, and

repeating the same processing when requesting the same service again and ending the processing when the service is not used.

35. A program which causes a computer to execute service search processing in a service registry, comprising the functions of:

receiving a service search request from a service using node by a user side service registry to search for registry information in the owned node,

returning service information relevant to a search key obtained as a result of the search to software of said service using node, and

completing the search by said service registry to again wait for a next search request.

36. A program which causes a computer to execute service using processing in a user side service proxy, comprising:

a function of monitoring a service request made from a node in a sub-network belonging to a service using side proxy,

a function by the user side service proxy of, upon receiving a service request, interpreting the service request and after conducting predetermined message conversion, transferring the message to a provider side service proxy to which a node providing the service in question belongs and monitoring arrival of a service execution result after the transfer, and

a function of, upon receiving said service execution result from said provider side service proxy, conducting message conversion to transmit the message to a service proxy designated by the service requesting side node.

37. A program which causes a computer to execute service using processing in a provider side service proxy, comprising the functions of:

monitoring a service request made from a user side service proxy,

upon receiving said service request, interpreting the service request, converting the request into a message system on the owned sub-network and transferring the message to a provider side node,

thereafter monitoring arrival of a service execution result from said provider side node, and

upon receiving said service execution result, converting the result into a message to transmit the message toward a service proxy designated by said service requesting node.

38. A program which causes a computer to execute service using processing in a service provider side service node, comprising the functions of:

monitoring arrival of a service request,

upon arrival of said service request, interpreting a request message to execute a service to be provided, and

returning an execution result to a service proxy on a transmission source'"'"'s own sub-network to end the processing of one service request.