Method and apparatus for service multiplexing over telephone networks which employ bridged tap construction

• US 6,310,894 B1
• Filed: 11/23/1998
• Issued: 10/30/2001
• Est. Priority Date: 11/23/1998
• Status: Expired due to Term

• Current Assignee: Verizon Laboratories Incorporated (Verizon Communications Inc.)
• Original Assignee: Verizon Laboratories Incorporated (Verizon Communications Inc.)
• Inventors: Counterman, Raymond C.
• Primary Examiner(s): Nguyen, Chau
• Assistant Examiner(s): HYUN, SOON D
• Application Number:
  US09/197,966
• Time in Patent Office: 1,072 Days
• Field of Search: 370/260, 370/480, 370/484, 370/486, 370/487, 370/488, 370/485, 370/463, 370/465, 370/467, 370/352, 370/353, 370/354, 370/358, 370/359, 370/493, 379/93.01, 379/93.04, 379/93.06, 379/93.07, 375/200, 375/266
• US Class Current: 370/484
• CPC Class Codes: H04L 12/66 Arrangements for connecting between networks having differing types of switching systems, e.g. gateways

Abstract

A method and apparatus for service multiplexing over telephone networks which employ bridged tap construction to allow the simultaneous delivery of different services to physically separated subscribers over a shared single pair of wires. Service is provided to one or more subscribers by connecting them to an open-circuited branch or directly with the working portion of the shared line. Service filters are used at appropriate locations in the network topology to couple or isolate the different communication channels. The wire pairs are used to simultaneously carry different services to physically separated subscribers, i.e., a portion of a common line carries one service to one location and a second service to another location. Telecommunication services are partitioned to occupy separate frequency bands in the spectrum of the transmission line using frequency division multiplexing (FDM) techniques. The location of the terminating point for each service is different and flexible as facilitated by the use of bridged taps, service drop connections and appropriate filtering. Inverse multiplexing, a method of combining multiple physical links (e.g., telephone lines) into a single, virtual communication link, is used to increase transmission bandwidth. The simultaneous delivery of different telecommunication services over a common line to physically separated subscribers may be used in conjunction with inverse multiplexing to increase and/or vary the transmission bandwidth to individual subscribers.

Claims

1. A method of delivering different communication services to different premises, comprising:

coupling a first one of said communication services onto a first communication path for transmission;

demultiplexing an aggregate virtual link communication service into a plurality of individual ones of said communication services;

coupling a first one of said plurality of individual ones of said communication services onto said first communication path for transmission;

transmitting said first one of said communication services and said first one of said plurality of individual ones of said communication services over said first communication path;

decoupling said first one of said communication services from said first communication path and delivering said first one of said communication services to a first one of said premises;

decoupling said first one of said plurality of individual ones of said communication services from said first communication path and delivering said first one of said plurality of individual ones of said communication services to a second one of said premises, wherein said first one of said premises is different from said second one of said premises;

coupling a second one of said plurality of individual ones of said communication services onto a second communication path for transmission;

decoupling said second one of said plurality of individual ones of said communication services from said second communication path; and

multiplexing said first and second ones of said plurality of individual ones of said communication services into a reconstructed aggregate virtual link communication service and delivering said reconstructed aggregate virtual link communication service to the second one of said premises.

2. The method of claim 1, wherein said first one of said communication services is a narrowband service and said aggregate virtual link communication service is a broadband service.

3. The method of claim 2, wherein said narrowband service includes POTS service and said broadband service includes xDSL service.

4. The method of claim 1, wherein said decoupling of said first one of said communication services includes the use of a first drop cable connected between said first communication path and said first one of said premises, and said decoupling of said first one of said plurality of individual ones of said communication services includes the use of a second drop cable connected between said first communication path and said second one of said premises.

5. The method of claim 1, wherein said first communication path comprises a metallic wire pair.

6. A method of delivering different communication services to different premises, comprising:

coupling a first one of said communication services onto a first communication path for transmission;

demultiplexing an aggregate virtual link communication service into a plurality of individual ones of said communication services;

coupling a first one of said plurality of individual ones of said communication services onto said first communication path for transmission;

transmitting said first one of said communication services and said first one of said plurality of individual ones of said communication services over said first communication path;

further transmitting said first one of said communication services using a bridged tap communication path connected to said first communication path;

decoupling said first one of said communication services from said bridged tap communication path and delivering said first one of said communication services to a first one of said premises;

decoupling said first of one said plurality of individual ones of said communication services from said first communication path and delivering said first one of said plurality of individual ones of said communication services to a second one of said premises, wherein said first one of said premises is different from said second one of said premises;

coupling a second one of said plurality of individual ones of said communication services onto a second communication path for transmission;

decoupling said second one of said plurality of individual ones of said communication services from said second communication path; and

multiplexing said first and second ones of said plurality of individual ones of said communication services into a reconstructed aggregate virtual link communication service and delivering said reconstructed aggregate virtual link communication service to the second one of said premises.

7. The method of claim 6, wherein said first one of said communication services is narrowband service and said aggregate virtual link communication service is a broadband service.

8. The method of claim 7, wherein said narrowband service includes POTS service and said broadband service includes xDSL service.

9.The method of claim 6, wherein said decoupling of said first one of said communication services includes the use of a first drop cable connected between said bridged tap communication path and said first one of said premises, and said decoupling of said first one of said plurality of individual ones of said communication services includes the use of a second drop cable connected between said first communication path and said second one of said premises.

9. The method of claim 6, wherein said first communication path and said bridged tap communication path each comprise a metallic wire pair.

10. A method of delivering different communication services to different premises, comprising:

coupling a first one of said communication services onto a first communication path for transmission using a first service filter;

demultiplexing an aggregate virtual link communication service into a plurality of individual ones of said communication services;

coupling a first one of said plurality of individual ones of said communication services onto said first communication path for transmission using a second service filter;

coupling a second one of said plurality of individual ones of said communication services onto a second communication path for transmission using a third service filter;

transmitting said first one of said communication services and said first and second ones of said plurality of individual ones of said communication services using said first and second communication paths;

decoupling said first one of said communication services from said first communication path using a fourth service filter and delivering said first one of said communication services to a first one of said premises;

decoupling said first and second ones of said plurality of individual ones of said communication services from said first and second communication paths, respectively, using a fifth and a sixth service filter; and

multiplexing said first and said second ones of said plurality of individual ones of said communication services into a reconstructed aggregate virtual link communication service and delivering said reconstructed aggregate virtual link communication service to a second one of said premises,

wherein said first one of said premises is different from said second one of said premises.

11. The method of claim 11, wherein said first one of said communication services is a narrowband service and said aggregate virtual link communication service is a broadband service.

13. The method of claim 11, wherein said decoupling of said first one of said communication services includes the use of a first drop cable connected between said first communication path and said first one of said premises, and said decoupling of said first and second ones of said plurality of individual ones of said communication services includes the use of respective drop cables connected between said first and said second communication paths on the one hand and said second one of said premises on the other hand.

15. The method of claim 11, wherein at least one of said first and second communication paths comprises a metallic wire pair.

16. The method of claim 11, wherein at least one of said service filters is located at one of said premises.

12. The method if claim 12, wherein said narrowband service includes POTS service and said broadband service includes a plurality of xDSL links.

14. The method of claim 14, wherein at least one of said service filters is located between one of said communication paths and one of said drop cables.

17. A communication system which delivers different communication services to different premises, comprising:

a first service filter that couples a first one of said communication services onto a first communication path for transmission;

a demultiplexer that demultiplexes an aggregate virtual link communication service into a plurality of individual ones of said communication services;

a second service filter that couples a first one of said plurality of individual ones of said communication services onto said first communication path for transmission;

a third service filter that decouples said first one of said communication services from said first communication path, subsequent to transmission over said first communication path, and delivers said first one of said communication services to a first one of said premises;

a fourth service filter that decouples said first one of said plurality of individual ones of said communication services from said first communication path, subsequent to transmission over said communication path, and delivers said first one of said plurality of individual ones of said communication services to a second one of said premises, wherein said first one of said premises is different from said second one of said premises;

a fifth service filter that couples a second one of said plurality of individual ones of said communication services onto a second communication path for transmission;

a sixth service filter that decouples said second one of said plurality of individual ones of said communication services from said second communication path; and

a multiplexer that multiplexes said first and second one of said plurality of individual ones of said communication services into a reconstructed aggregate virtual link communication service and delivers said reconstructed aggregate virtual link communication service to the second one of said premises.

18. The system of claim 18, wherein said first one of said communication services is a narrowband service and said aggregate virtual link communication service is a broadband service.

20. The system of claim 18, wherein said decoupling of said first one of said communication services includes the use of a drop cable connected between said first communication path and said first one of said premises, and said decoupling of said first one of said plurality of individual ones of said communication services includes the use of a second drop cable connected between said first communication path and said second one of said premises.

22. The system of claim 18, wherein said first communication path comprises a metallic pair.

23. The system of claim 18, wherein at least one of said service filters is located at one of said premises.

19. The system of claim 19, wherein said narrowband service includes POTS service and said broadband service includes xDSL service.

21. The system of claim 21, wherein at least one of said service filters is located between said first communication path and one of said drop cables.

24. A communication system which delivers different communication services to different premises, comprising:

a first service filter that couples a first one of said communication services onto a first communication path for transmission over the first communication path;

a demultiplexer that demuliplexes an aggregate virtual link communication service into a plurality of individual ones of said communication services;

a second service filter that couples a first one of said plurality of individual ones of said communication services onto said first communication path for transmission over said first communication path;

a bridged tap communication path connected to said first communication path and that transmits said first one of said communication services;

a third service filter that decouples said first one of said communication services from said bridged tap communication path and delivers said first one of said communication services to a first one of said premises;

a fourth service filter that decouples said first one of said plurality of individual ones of said communication services from said first communication path and delivers said first one of said plurality of individual ones of said communication services to a second one of said premises, wherein said first one of said premises is different from said second one of said premises;

a fifth service filter that couples a second one of said plurality of individual ones of said communication services onto a second communication path for transmission;

a sixth service filter that decouples said second one of said plurality of individual ones of said communication services from said second communication path; and

a multiplexer that multiplexes said first and second ones of said plurality of individual ones of said communication services into a reconstructed aggregate virtual link communication service and delivers said reconstructed aggregate virtual link communication service to the second one of said premises.

25. The system of claim 25, wherein said first one of said communication services is a narrowband service and said aggregate virtual link communication service is a broadband service.

27. The system of claim 25, wherein said decoupling of said first one of said communication services includes the use of a first drop cable connected between said bridged tap communication path and said first one of said premises, and said decoupling of said first one of said plurality of individual ones of said communication services includes the use of a second drop cable connected between said first communication path and said second one of said premises.

29. The system of claim 25, wherein said first communication path and said bridged tap communication path each comprises a metallic wire pair.

30. The system of claim 25, wherein at least one of said service filters is located at one of said premises.

26. The system of claim 26, wherein said narrowband service includes POTS service and said broadband service includes xDSL service.

28. The system of claim 28, wherein at least one of said service filters is located between said first communication path and one of said first and second drop cables.

31. A system for delivering different communication services to different premises, comprising:

a first service filter that couples a first one of said communication services onto a first communication path for transmission;

a demultiplexer that demultiplexes an aggregate virtual link communication service into a plurality of individual ones of said communication services;

a second service filter that couples a first one of said plurality of individual ones of said communication services onto said first communication path for transmission;

a third service filter that couples a second one of said plurality of individual ones of said communication services onto a second communication path for transmission;

transmitting said first one of said communication services and said first and second of said plurality of individual ones of said communication services using said first and second communication paths;

a fourth service filter that decouples said first one of said communication services from said first communication path, subsequent to transmission, and delivers said first one of said communication services to a first one of said premises;

a fifth and sixth service filter that decouples said first and second ones of said plurality of individual ones of said communication services, respectively, from said first and second communication paths, subsequent to transmission; and

a multiplexer that multiplexes said first and said second ones of said plurality of individual ones of said communication services into a reconstructed aggregate virtual link communication service and delivers said reconstructed aggregate virtual link communication service to a second one of said premises,

wherein said first one of said premises is different from said second one of said premises.

32. The system of claim 32, wherein said first one of said communication services is a narrowband service and said aggregate virtual link communication service is a broadband service.

34. The system of claim 32, wherein said decoupling of said first one of said communication services includes the use of a first drop cable connected between said first communication path and said first one of said premises, and said decoupling of said first and second ones of said plurality of individual ones of said communication services includes the use of respective drop cables connected between said first and said second communication paths on the one hand and said second one of said premises on the other hand.

36. The system of claim 32, wherein at least one of said first and second communication paths comprises a metallic wire pair.

37. The system of claim 32, wherein at least one of said service filters is located at one of said premises.

33. The system of claim 33, wherein said narrowband service includes POTS service and said broadband service includes a plurality of xDSL links.

35. The system of claim 35, wherein at least one of said service filters is located between one of said communication paths and one of said drops cables.