Control data over a ring network

• US 6,570,880 B1
• Filed: 08/21/1998
• Issued: 05/27/2003
• Est. Priority Date: 08/21/1998
• Status: Expired due to Term

• Current Assignee: CommScope Technologies, LLC (CommScope Holding Company, Inc.)
• Original Assignee: ADC Telecommunications Incorporated (TE Connectivity Limited)
• Inventors: Coden, Michael H.
• Primary Examiner(s): Kizou, Hassan
• Assistant Examiner(s): LOGSDON, JOSEPH B
• Application Number:
  US09/137,722
• Time in Patent Office: 1,740 Days
• Field of Search: 370/258, 370/351, 370/389, 370/400, 370/909, 370/912, 370/254, 370/255, 370/401, 370/403, 370/404, 379/113, 379/114, 379/133, 379/243, 379/258, 379/308, 379/350, 709/251, 709/208, 709/223, 709/224, 709/242
• US Class Current: 370/404
• CPC Class Codes: H04L 12/2801 Broadband local area networks
• CPC Class Codes: H04L 12/433 with asynchronous transmission, e.g. token ring, register insertion

Abstract

A telecommunications network is provided. The network uses a ring of ring switches to provide a transport mechanism for data packets that is transparent to the data and protocols contained in the data packets. This transport mechanism is simple and low cost to implement. Such networks can carry, for example, control data between a primary site and secondary sites of a cable network to set up and deliver pay per view, video on demand or near video on demand programming. The network can also be used, in other embodiments, to provide remote access to utility meters, to centralize network management of the cable network, and other appropriate monitoring and control functions.

Claims

1. A telecommunications network comprising:

a primary site that includes a master controller;

at least one secondary site;

the primary site and the at least one secondary site each including a ring switch, wherein the ring switches are interconnected to form a transport ring;

the ring switches each using at least one table that tracks the identity of network devices associated with each port of the ring switch based on source identifiers of data packets received at the ports of the ring switch and wherein data packets received at a ring port that are not destined for a network device associated with a local port of the ring switch are switched to another ring switch based on the at least one table without the use of a token or encapsulating the data packet; and

at least one local controller communicatively coupled to a local port of one of the at least one secondary site, the local controller and the master controller communicating by transmitting packets over the transport ring.

2. The network of claim 1, wherein the at least one local controller comprises a circuit that reads values of a utility meter.

3. The network of claim 1, wherein the at least one local controller comprises a circuit that controls equipment that is coupled to a utility network.

4. The network of claim 1, wherein the at least one local controller includes a set top box.

5. The network of claim 1, wherein the at least one local controller provides access to video on demand services.

6. The network of claim 1, wherein the at least one local controller provides access to pay per view programming.

7. The network of claim 1, wherein the at least one local controller provides access to near video on demand programming.

8. The network of claim 1, wherein the at least one local controller comprises a circuit that reads equipment in the network.

9. The network of claim 1, wherein the at least one local controller comprises a circuit that controls equipment in the network.

10. A method for routing control information in a telecommunications network, the method comprising:

receiving control information from a first controller for transmission to a second controller;

placing the control information in packets on a ring network that includes ring switches that each include a table adapted to self-learn which network devices are associated with each port of the ring switch;

selectively switching the packets around the ring network based on a destination identifier of the packets using the table without the use of a token or encapsulating the data packet; and

removing the packets from the ring at a local port of the ring switch when the table for the ring switch and the destination identifier indicate that the destination network device is located on a local port of the ring switch without the use of a token or encapsulating the data packet.

11. The method of claim 10, wherein receiving control information from a first controller for transmission to a second controller comprises receiving control information from a local controller for transmission to a master controller.

12. The method of claim 10, wherein receiving control information from a first controller for transmission to a second controller comprises receiving control information from a master controller for transmission to a local controller.

13. The method of claim 10, wherein receiving control information comprises receiving values of a utility meter.

14. The method of claim 10, wherein receiving control information comprises receiving signals for controlling equipment that is coupled to a utility network.

15. The method of claim 10, wherein receiving control information comprises receiving signals from or for a set top box.

16. The method of claim 10, wherein receiving control information comprises receiving a request for or access to video on demand services.

17. The method of claim 10, wherein receiving control information comprises receiving a request for or access to pay per view programming.

18. The method of claim 10, wherein receiving control information comprises receiving a request for or access to near video on demand programming.

19. The method of claim 10, wherein receiving control information comprises receiving values from equipment in the network.

20. The method of claim 10, wherein receiving control information comprises receiving signals for controlling equipment in the network.

21. A network comprising:

a primary site including a master controller;

at least one secondary site; and

a ring of ring switches that communicatively couple the primary site and the at least one secondary site in a ring, each ring switch having a table adapted to self-learn network devices associated with each port of the ring switch such that the ring switch associates destination identifiers with ports of the ring switch to switch data packets off from the ring at the primary site or at one of the at least one secondary sites based on an identifier in the data packets that identifies a destination local controller or the master controller without the use of a token or encapsulating the data packets.

22. The network of claim 21, wherein the local controller comprises a circuit that reads values of a utility meter.

23. The network of claim 21, wherein the local controller comprises a circuit that controls equipment that is coupled to a utility network.

24. The network of claim 21, wherein the local controller includes a set top box.

25. The network of claim 21, wherein the local controller provides access to video on demand services.

26. The network of claim 21, wherein the local controller provides access to pay per view programming.

27. The network of claim 21, wherein the local controller provides access to near video on demand programming.

28. The network of claim 21, wherein the local controller comprises a circuit that reads values of equipment in the network.

29. The network of claim 21, wherein the local controller comprises a circuit that controls equipment in the network.

30. A method for routing control information in a telecommunications network, the method comprising:

receiving packets from a first controller for a second controller;

placing the packets on a ring network that includes ring switches that each include a table adapted to self-learn network devices associated with each port of the ring switch;

selectively switching the packets around and off the ring network based on destination identifiers of the packets using the table without the use of a token or encapsulating the data packets; and

selectively removing the packets based on a source identifier when the source identifier is associated with a local port of the ring switch.

31. The method of claim 30, wherein receiving control packets from a first controller for transmission to a second controller comprises receiving control information from a local controller for transmission to a master controller.

32. The method of claim 30, wherein receiving control packets from a first controller for transmission to a second controller comprises receiving control information from a master controller for transmission to a local controller.

33. The method of claim 30, wherein receiving control packets comprises receiving values of a utility meter.

34. The method of claim 30, wherein receiving control packets comprises receiving signals for controlling equipment that is coupled to a utility network.

35. The method of claim 30, wherein receiving control packets comprises receiving signals from or for a set top box.

36. The method of claim 30, wherein receiving control packets comprises receiving a request for or access to video on demand services.

37. The method of claim 30, wherein receiving control packets comprises receiving a request for or access to pay per view programming.

38. The method of claim 30, wherein receiving control packets comprises receiving a request for or access to near video on demand programming.

39. The method of claim 30, wherein receiving control packets comprises receiving values of equipment in the network.

40. The method of claim 30, wherein receiving control packets comprises receiving signals for controlling equipment in the network.