Intelligent broadband communication system and method employing fast-packet switches

• US 5,539,884 A
• Filed: 05/28/1993
• Issued: 07/23/1996
• Est. Priority Date: 05/20/1993
• Status: Expired due to Term

• Current Assignee: TTI Inventions A LLC (Intellectual Ventures LLC)
• Original Assignee: Bell Communications Research, Inc. (Telefonaktiebolaget LM Ericsson)
• Inventors: Robrock, Richard B. II
• Primary Examiner(s): Bowler, Alyssa H.
• Assistant Examiner(s): SHAH, ALPESH
• Application Number:
  US08/069,243
• Time in Patent Office: 1,152 Days
• Field of Search: 395/800, 395/275, 395/250, 395/200, 395/200.12, 395/200.13, 395/825, 379/15-18, 379/46, 379/93, 379/94, 379/112, 379/118, 379/120, 379/164, 379/165, 379/182, 379/183, 379/220, 379/221, 379/245, 379/248, 379/271-274, 371/8.1, 371/8.2, 371/9.1, 371/11.2, 371/11.3, 371/68.1-68.3, 370/54, 370/60, 370/60.1, 370/67, 370/68.1, 370/91, 370/94.1, 340/825.03, 340/826, 340/827
• US Class Current: 709/227
• CPC Class Codes: H04L 2012/5619 Network Node Interface, e.g. tandem connections, transit switching
• CPC Class Codes: H04L 2012/5626 Network management, e.g. Intelligent nets
• CPC Class Codes: H04L 2012/563 Signalling, e.g. protocols, reference model
• CPC Class Codes: H04L 49/3081 ATM peripheral units, e.g. policing, insertion or extraction
• CPC Class Codes: H04Q 11/0478 Provisions for broadband connections

Abstract

A broadband intelligent network (50) an ATM switch or other fast-packet switch (51) in a fiber optic, fast-packet communication system. The ATM switch (51) is directly coupled (53) through one of its ports to a network service control point (61) for the implementation of requested services without the use of an intermediate common channel signaling system. ATM cells, identified as signaling cells, carry customer service requests and are automatically routed through the ATM switch to the network service control point (61). The service control point (61) determines the requested service and executes a corresponding programmed procedure (210). Connection service requested by a particular signaling cell is implemented by the service control point (61) sending a command cell through a port of the ATM switch (51) to instruct the switch connection management processor (64) to establish a switched virtual circuit for the requested connection.

Claims

1. A broadband intelligent network comprising:

a fast-packet switch having a plurality of ports;

a switch processor for managing virtual connections among the switch ports to establish switched virtual connections for routing of cells, in accordance with connection request data contained in a signaling cell sent by a calling party for each request for a connection between the calling party and a called party;

respective customer links having a relatively broad digital bandwidth connected to predetermined switch ports for transporting the cells to and from customer apparatus;

a network control processing system, interfaced to at least one of the switch ports, to receive signaling cells carrying customer service request data and to control network responses thereto;

the switch processor detecting each signaling cell received by the switch and routing each signaling cell to the network control processing system through the at least one switch port;

the network control processing system detecting the service request data in each received signaling cell and generating at least one output command for implementing requested service; and

the network control processing system sending at least one signaling cell to the calling party or the called party in implementing the requested service.

2. The broadband intelligent network of claim 1 wherein the network control processing system is interfaced to the one switch port through a substantially direct connection having a relatively broad digital bandwidth.

3. The broadband intelligent network of claim 1 wherein the interface from the network control processing system to the one switch port is structured to provide the interface with a transport rate at least substantially equal to a fast-packet transport rate in the network.

4. The broadband intelligent network of claim 1 wherein at least some of the output commands are output as command cells carrying service execution data and being transmitted to the switch through the one port for implementation.

5. The broadband intelligent network of claim 1 wherein a data link is provided for coupling to the switch processor those output commands that are to be executed by the switch processor.

6. The broadband intelligent network of claim 1 wherein the input data cells are data cells being transported between calling and called parties.

7. The broadband intelligent network of claim 3 wherein the customer connection lines and the direct connection are provided with use of at least some fiber optic facilities.

8. The broadband intelligent network of claim 1 wherein at least a second fast-packet switch having additional ports is provided in the network and the network control processing system is further interfaced to at least one of the additional ports of the second fast-packet switch to receive signaling cells carrying customer service request data and to control network responses thereto.

9. The broadband intelligent network of claim 1 wherein a backup network control processing system is interfaced to at least another of the switch ports to receive the signaling cells carrying customer service request data and to control network responses thereto if the network control processing system fails and transfers control to the backup network control processing system.

10. The broadband intelligent network of claim 1 wherein the network control processing system includes a system for creating network procedures that implement requested new network services when executed by the network control processing system in response to data requests from signaling cells for the execution of such services.

11. The broadband intelligent network of claim 10 wherein the network control processing system is interfaced to the one switch port through a substantially direct connection having a relatively broad digital bandwidth.

12. The broadband intelligent network of claim 10 wherein the interface from the network control processing system to the one switch port is structured to provide the interface with a transport rate at least substantially equal to a fast-packet transport rate in the network.

13. The broadband intelligent network of claim 10 wherein the network control processing system outputs at least some of the output commands as command cells carrying service execution data for transmission to the switch through the one port for implementation.

14. The broadband intelligent network of claim 10 wherein at least a second fast-packet switch having additional ports is provided in the network and the network control processing system is further interfaced to at least one of the additional ports of the second fast-packet switch to receive signaling cells carrying customer service request data and to control network responses thereto.

15. The broadband intelligent network of claim 1 wherein the network control processing system detects a service request for a call connection from the service request data.

16. The broadband intelligent network of claim 15 wherein the network control processing system employs stored data to check the requested call connection for calling and called party authorizations, requested billing party authorization, carrier identification, and any required address translation, and generates a connection output command to provide a virtual connection between calling and called parties if the checked authorizations are obtained.

17. The broadband intelligent network of claim 15 wherein signaling cells for establishing a virtual connection path with a requested first bandwidth and for terminating the virtual connection path are successively received by the network control processing system and successive output commands are generated by the network control processing system in response thereto to establish the requested virtual connection path and subsequently to terminate the requested virtual connection path.

18. The broadband intelligent network of claim 17 wherein a mid-call signaling cell is received for an additional virtual channel in the connection path with another bandwidth different from the first bandwidth and another output command is generated in response to the mid-call signaling cell by the network control processing system to establish the requested virtual channel.

19. The broadband intelligent network of claim 18 wherein another mid-call signaling cell is received to terminate the virtual channel and still another output command is generated by the network control processing system in response to the other mid-call signaling cell to terminate the established virtual channel.

20. The broadband intelligent network of claim 19 wherein all of the output commands are output as command cells carrying service execution data and being transmitted through the one port to the switch processor for execution.

21. The broadband intelligent network of claim 18 wherein the first bandwidth is a bandwidth for voice and the other bandwidth is a bandwidth for broadband digital data or video transmission.

22. The broadband intelligent network of claim 15 wherein the network control processing system makes a billing record for each requested connection by recording signaling cell data including calling and called parties, billed party, times of connection path establishment and termination, connection path bandwidth, and times of establishment and termination of any channel having a bandwidth different from the connection path, and the network control processing system generating a billing record output for customer billing purposes.

23. The broadband intelligent network of claim 1 wherein the network control processing system employs stored customer data to identify and select a carrier for call connection requests detected from the customer service request data.

24. The broadband intelligent network of claim 23 wherein the network control processing system further employs customer store data to determine a carrier based on a billing party address and generates an output command corresponding thereto.

25. The broadband intelligent network of claim 1 wherein the network control processing system employs stored data to provide carrier identification, address translation, and predetermined authorization(s) for service requests detected from the customer service request data.

26. The broadband intelligent network of claim 1 wherein:

the customer apparatus generates signaling cells with a header portion and a payload portion;

the header portion having data identifying the cell as a signaling cell;

the payload portion having data defining a network service request;

the network control processing system detects signaling cells by reading the signaling cell header data; and

the network control processing system reads the payload data of detected signaling cells to determine service requests whereby a virtual signaling channel is provided between each customer and the network control processing system.

27. A broadband intelligent network comprising:

means for fast-packet switching among a plurality of ports;

first means for processing label information from cells to route cells and to manage virtual connections between the ports to establish switched virtual connections that perform data cell routing in accordance with connection request data contained in a signaling cell sent for each request for a connection between a calling party and a called party;

means for coupling customer apparatus through connections having a relatively broad digital bandwidth to predetermined switch ports to transport cells to and from the customer apparatus;

second means for processing customer service request data detected from received signaling cells and to control network responses thereto;

means for interfacing the second network control processing means to at least one of the switch ports;

the first processing means detecting each signaling cell received by the fast-packet switch means and routing each signaling cell to the second processing means through the one switch port;

the second processing means detecting service request data in each received signaling cell and generating at least one output command to implement the requested service; and

the second processing means sending at least one signaling cell to the calling party or the called party.

28. The broadband intelligent network of claim 27 wherein the interfacing means provides a substantially direct connection having a relatively broad bandwidth.

29. The broadband intelligent network of claim 27 wherein the interface means is structured to provide the interface with a transport rate at least substantially equal to a fast-packet transport rate in the network.

30. The broadband intelligent network of claim 27 wherein at least some of the output commands are output as command cells carrying service execution data and being transmitted to the fast-packet switching means through the one port for implementation.

31. The broadband intelligent network of claim 28 wherein at least some of the output commands are output as command cells carrying service execution data and being transmitted to the switching means through the one port for implementation.

32. The broadband intelligent network of claim 31 wherein at least a second means for fast-packet switching having additional ports is provided in the network and the second network control processing means is further interfaced to at least one of the additional ports of the second fast-packet switching means to receive other signaling cells therefrom carrying customer service request data and to control network responses thereto.

33. The broadband intelligent network of claim 27 wherein:

at least a second means for fast-packet switching having additional ports is provided in the network and the second processing means is further interfaced to at least one of the additional ports of the second fast-packet switching means to receive other signaling cells carrying customer service request data and to control network responses thereto; and

means are provided for backup network control processing, the backup processing means interfaced to at least another of the switch ports to receive the signaling cells carrying customer service request data and to second control network responses thereto if the second network control processing means fails and transfers control to the backup processing means.

34. The broadband intelligent network of claim 27 wherein the second network control processing means includes means for creating network procedures that implement requested new network services when executed by the second processing means in response to data requests for the execution of such services.

35. The broadband intelligent network of claim 34 wherein the second processing means is interfaced to the one switch port through a substantially direct connection having a relatively broad digital bandwidth and providing transport rate at least substantially equal to a fast-packet transport rate in the network;

and

the second processing means outputs at least some of the output commands as command cells carrying service execution data for transmission to the switch for implementation.

36. The broadband intelligent network of claim 34 wherein the customer connection lines and the direct connection are provided with the use of at least some fiber optic facilities.

37. The broadband intelligent network of claim 35 wherein at least a second means for fast-packet switching having additional ports is provided in the network and the second network control processing means is further interfaced to at least one of the additional ports of the second fast switching means to receive other signaling cells therefrom carrying customer service request data and to control network responses thereto;

and

means are provided for backup network control processing, the backup processing means interfaced to at least another of the switch ports to receive the signaling cells carrying customer service request data and to control network responses thereto if the second processing means fails and transfers control to the backup control processing means.

38. The broadband intelligent network of claim 27 wherein the second processing means detects a service request for a call connection from the service request data;

the second processing means employs stored data to check the requested call connection for calling and called party authorizations and requested billing party authorization, for carrier identification and for any required address translation and generates a connection output command to connect calling and called parties if the checked authorizations are obtained;

signaling cells for establishing a virtual connection path with a requested first bandwidth and for terminating the connection path are successively received by the second processing means and successive output commands are generated by the second processing means to establish the requested connection path and subsequently to terminate the requested connection path; and

the second processing means generating the output commands as command cells carrying service execution data and being transmitted through the one port to the fast switching means for execution.

39. The broadband intelligent network of claim 38 wherein a mid-call signaling cell is received for a channel in the connection path with another bandwidth different from the first bandwidth and another output command is generated by the second processing means to establish the requested channel;

and

another mid-call signaling cell is received to terminate the channel and still another output command is generated by the second processing means to terminate the requested channel.

40. The broadband intelligent network of claim 27 wherein the second processing means detects service request for a call connection from the service request data;

and

the second processing means makes a billing record for each requested connection by recording signaling cell data including calling and called parties, billed party, times of virtual channel establishment and termination, connection path bandwidth, and times of establishment and termination of other virtual channels having different bandwidth, and the second processing means generating a billing record output for customer billing purposes.

41. A method for operating a broadband intelligent network, the steps of the method comprising:

transporting cells between predetermined ports of a fast-packet switch and customer apparatus;

using a switch processor to manage virtual connections among the switch ports, so as to establish switched virtual connections for routing of cells in accordance with data provided in an input signaling cell from a calling party for each connection request;

processing customer service request data detected by a service control point processor from signaling cells received in the service control point processor through an interface with one of the switch ports to control network responses to the service request data;

operating the switch processor to detect each signaling cell received by the fast-packet switch and routing each signaling cell to the service control point processor through the one switch port; and

the customer service request processing step including operating the service control point processor to detect service request data in each received signaling cell and generate at least one output command to implement the requested service.

42. The method of claim 41 wherein the steps further include:

operating the service control point processor to the one switch port through a substantially direct interface connection having a relatively broad digital bandwidth.

43. The method of claim 42 wherein the interface from the service control point processor to the one switch port operates at a transport rate at least substantially equal to a fast-packet transport rate in the network.

44. The method of claim 43 wherein the steps further include:

operating the service control point processor to generate at least some of the output commands as command cells carrying service execution data for transmission to the switch through the one port for implementation.

45. The method of claim 44 wherein the steps further include:

operating at least a second fast-packet switch having additional ports to provide switched virtual connections for input cells, and operating the service control point processor to interface at least one of the additional ports of the second fast-packet switch to receive signaling cells carrying customer service request data and to control network responses thereto.

46. The method of claim 43 wherein the steps further include:

operating a system to program the service control point processor with network procedures that create requested new network services for execution by the service control point processor when data requests are made therefor.

47. The method of claim 43 wherein the steps further include:

operating the service control point processor to detect a service request for a call connection from the service request data; and

operating the service control point processor to make a billing record for each requested connection by signaling cell data including recording calling and called parties, billed party, times of connection path establishment and termination, connection path bandwidth, and times of establishment and termination of additional channels having different bandwidth, and the control processing system generating a billing record output for customer billing purposes.

48. The method of claim 43 wherein the steps further include:

operating the service control point processor to detect a service request for a call connection from the service request data;

operating the service control point processor to do carrier identification, to perform any required address translation, and to generate a connection output command to connect calling and called parties if calling and called party authorizations and requested billing party authorization are obtained for the connection; and

operating the service control point processor to respond to successive signaling cells for establishing a connection path with a requested first bandwidth and for terminating the connection path and to generate in response thereto successive output commands to establish the requested connection path and subsequently to terminate the requested connection path.

49. The method of claim 46 wherein the steps further include:

operating the service control point processor to detect a service request for a call connection from the service request data; and

operating the service control point processor to respond to successive signaling cells for establishing a connection path with a requested first bandwidth and for terminating the connection path and to generate in response thereto successive output commands to establish the requested connection path and subsequently to terminate the requested connection path.

50. A broadband intelligent network comprising:

a fast-packet switch having a plurality of ports;

a switch processor for managing virtual connections among the switch ports to establish switched virtual connections for routing cells, in accordance with connection request data contained in a signaling cell sent by a calling party for each request for a connection between a calling party and a called party;

respective customer links having a relatively broad digital bandwidth connected to predetermined switch ports for transporting the cells to end from customer apparatus;

a network control processing system interfaced to at least one of the switch ports to receive signaling cells carrying customer service request data and to control network responses thereto;

the switch processor detecting each signaling cell received by the switch end routing each signaling cell to the network control processing system through at least the one switch port; and

the network control processing system detecting service request data in each received signaling cell and generating at least one output command for implementing the requested service.