Local multipoint distribution service base station apparatus

• US 6,501,768 B2
• Filed: 11/02/1998
• Issued: 12/31/2002
• Est. Priority Date: 11/02/1998
• Status: Expired due to Term

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Cilia, Andrew, Brobston, Michael L., Burt, Donald G., Marin, James Scott, Myers, William K.
• Primary Examiner(s): Chin, Wellington
• Assistant Examiner(s): PHAN, MAN U
• Application Number:
  US09/184,498
• Publication Number:
  US 20020003808A1
• Time in Patent Office: 1,520 Days
• Field of Search: 370/347, 370/465, 370/348, 370/350, 455/562, 455/425, 455/446, 455/62, 455/524, 455/422, 455/426, 455/6.2, 455/71, 455/76, 455/454, 455/561, 375/219, 375/344, 375/308, 375/281
• US Class Current: 370/465
• CPC Class Codes: H04Q 1/03 Power distribution arrangements
• CPC Class Codes: H04Q 1/09 Frames or mounting racks not otherwise provided for
• CPC Class Codes: H04Q 2201/808 in wireless transmission systems
• CPC Class Codes: H04W 88/08 Access point devices
• CPC Class Codes: H05K 7/186 for supporting telecommunication equipment selecting apparatus H04Q1/02

Abstract

A local multipoint distribution service base station apparatus for sending and receiving communication signals to and from subscribers includes a base unit having at least one rack which is adapted to receive at least one subrack. At least one communication signal generating unit is also arranged and configured to be received by the subrack. In addition, a transmitting/receiving unit is operationally connected to the base unit for transmitting and/or receiving the communication signals to and from the subscribers.

Claims

1. Local multipoint distribution service base station apparatus for sending and receiving communication signals to and from a plurality of remotely located subscriber equipment, comprising:

a base unit including at least one rack, said rack configured to receive a plurality of subracks;

a plurality of communication signal generators arranged and configured to be received by each of said plurality of subracks, wherein each of said plurality of communication signal generators is implemented as a replaceable module each with a different functionality and a different physical structure, the replaceable modules being grouped together according to their respective functionalities, the replaceable modules operable to be removed and installed according to a desired subscriber capacity;

a transmitting/receiving unit operationally connected to said base unit for transmitting and receiving the communication signals to and from the subscriber equipment.

2. A base station apparatus as defined in claim 1 wherein said plurality of said subracks which have received said plurality of said communication signal generators are arranged adjacent to each other in said at least one rack.

3. A base station apparatus as defined in claim 1 wherein each of said plurality of communication signal generators is provided on at least one circuit card, and each of said plurality of subracks is configured to receive said at least one circuit card.

4. A base station apparatus as defined in claim 1 wherein said base unit is connected to a communication signal source for supplying the communication signals to said base unit.

5. A base station apparatus as defined in claim 4 wherein said base unit is configured to send the communication signals from said communication signal source to the subscriber equipment at a higher data rate than a data rate of the communication signals received from the subscriber equipment.

9. A base station apparatus as defined in claim 4 wherein said base unit is connected to said communication signal source via a broad bandwidth connection network.

10. A base station apparatus as defined in claim 1 wherein said plurality of communication signal generators include a video signal generator and a telephony signal generator, and the communication signals include video signals and telephony signals.

11. A base station apparatus as defined in claim 10 wherein said base unit includes a plurality of said video signal generators and a plurality of said telephony signal generators, said plurality of said video signal generators and said telephony signal generators being received in said plurality of said subracks.

12. A base station apparatus as defined in claim 11 wherein said subracks in which said plurality of said video signal generators have been received are arranged adjacent to each other in said at least one rack, and said subracks in which said plurality of said telephony signal generators have been received are arranged adjacent to each other in said at least one rack.

13. A base station apparatus as defined in claim 11 wherein each of said plurality of said video signal generators and said telephony signal generators is provided on at least one circuit card, and said circuit card is configured to be received in said plurality of subracks.

14. A base station apparatus as defined in claim 10 wherein said telephony signal generator generates data signals.

15. A base station apparatus as defined in claim 10 wherein said base unit is connected to a video signal source and a telephony signal source for supplying said video signals and said telephony signals, respectively, to said base unit.

16. A base station apparatus as defined in claim 15 wherein said base unit is configured to send said video and said telephony signals from said video and said telephony signal sources to the subscriber equipment at a higher data rate than a data rate of said video and said telephony signals received from the subscriber equipment.

20. A base station apparatus as defined in claim 15 wherein said base unit is connected to said video and said telephony signal sources via a broad bandwidth connection network.

21. A base station apparatus as defined in claim 1 wherein said plurality of communication signal generators includes a telephony signal generator and the communication signals are telephony signals.

22. A base station apparatus as defined in claim 21 wherein said base unit includes a plurality of said telephony signal generators and a plurality of said subracks, and said plurality of said telephony signal generators are received in said plurality of subracks.

23. A base station apparatus as defined in claim 22 wherein said subracks in which said plurality of said telephony signal generators have been received are arranged adjacent to each other in said at least one rack.

24. A base station apparatus as defined in claim 22 wherein each of said plurality of said telephony signal generators is provided on at least one circuit card, and said circuit card is configured to be received in said plurality of subracks.

25. A base station apparatus as defined in claim 21 wherein said telephony signal generator generates data signals.

26. A base station apparatus as defined in claim 21 wherein said base unit is connected to a telephony signal source for supplying said telephone signals to said base unit.

27. A base station apparatus as defined in claim 26 wherein said base unit is configured to send said telephony signals from said telephony signal source to the subscriber equipment at a higher data rate than a data rate of said telephony signals received from the subscriber equipment.

31. A base station apparatus as defined in claim 1 wherein said plurality of communication signal generators include a video signal generator, and the communication signals are video signals.

32. A base station apparatus as defined in claim 31 wherein said base unit includes a plurality of said video signal generators, and said plurality of said video signal generators are received in said plurality of subracks.

33. A base station apparatus as defined in claim 32 wherein said subracks in which said plurality of said video signal generators have been received are arranged adjacent to each other in said at least one rack.

34. A base station apparatus as defined in claim 32 wherein each of said plurality of said video signal generators is provided on at least one circuit card, and said circuit card is configured to be received in said plurality of subracks.

35. A base station apparatus as defined in claim 31 wherein said base unit is connected to a video signal source for supplying said video signals to said base unit.

36. A base station apparatus as defined in claim 35 wherein said base unit is configured to send said video signals from said video signal source to the subscriber equipment at a higher data rate than a data rate of said video signals received from the subscriber equipment.

40. A base station apparatus as defined in claim 1 wherein said base unit further comprises:

at least one modulator connected between said communication signal generators and said transmitting/receiving unit for modulating the communication signals; and

at least one demodulator connected between said communication signal generators and said transmitting/receiving unit for demodulating the communication signals received from the subscriber equipment.

41. A base station apparatus as defined in claim 1 wherein said base unit further comprises a master oscillator for providing a single frequency reference for all frequency setting components of said base station apparatus.

42. A base station apparatus as defined in claim 41 wherein said base unit further comprises a pilot tone generator operationally connected to said master oscillator for providing said frequency reference to said transmitting/receiving unit and the subscriber equipment.

43. A base station apparatus as defined in claim 1 wherein said base unit is connected to said transmitting/receiving unit via one of at least one fiber optic link and at least one coaxial cable.

44. A base station apparatus as defined in claim 43 wherein a frequency of the communication signals transmitted between said base unit and said transmitting/receiving unit is different than a frequency of the communication signals transmitted between said transmitting/receiving unit and the subscriber equipment.

45. A base station apparatus as defined in claim 44 wherein said frequency of the communication signals transmitted between said base unit and said transmitting/receiving unit is in intermediate frequency, and said frequency of the communication signals transmitted between said transmitting/receiving unit and the subscriber equipment is in radio frequency.

46. A base station apparatus as defined in claim 1 wherein said base station is configured to receive the communication signals from and provide the communication signals to the subscriber equipment in a selected one of a synchronous continuous format and an asynchronous burst format.

6. Local multipoint distribution service base station apparatus for sending and receiving communication signals to and from a plurality of remotely located subscriber equipment, comprising:

a base unit including at least one rack, said rack configured to receive a plurality of subracks;

a plurality of communication signal generators arranged and configured to be received by each of said plurality of subracks, wherein each of said plurality of communication signal generators is implemented as a replaceable module each with a different functionality and a different physical structure, the replaceable modules being grouped together according to their respective functionalities, the replaceable modules operable to be removed and installed according to a desired subscriber capacity;

a transmitting/receiving unit operationally connected to said base unit for transmitting and receiving the communication signals to and from the subscriber equipment;

wherein said base unit is connected to a communication signal source for supplying the communication signals to said base unit;

wherein said base unit is configured to send the communication signals from said communication signal source to the subscriber equipment at a higher data rate than a data rate of the communication signals received from the subscriber equipment;

wherein said base unit converts a data rate of the communication signals received from said communication signal source to a lower data rate, and performs a multiplexing function on the communication signals to send the communication signals at said higher data rate than said data rate of the communication signals received from the subscriber equipment.

7. A base station apparatus as defined in claim 6 wherein said base unit includes a multiplexer for converting said data rate of the communication signals received from said communication signal source to said lower data rate.

8. A base station apparatus as defined in claim 6 wherein said multiplexing function is performed by at least one of said plurality of communication signal generators.

17. Local multipoint distribution service base station apparatus for sending and receiving communication signals to and from a plurality of remotely located subscriber equipment, comprising:

a base unit including at least one rack, said rack configured to receive a plurality of subracks;

a plurality of communication signal generators arranged and configured to be received by each of said plurality of subracks, wherein each of said plurality of communication signal generators is implemented as a replaceable module each with a different functionality and a different physical structure, the replaceable modules being grouped together according to their respective functionalities, the replaceable modules operable to be removed and installed according to a desired subscriber capacity;

a transmitting/receiving unit operationally connected to said base unit for transmitting and receiving the communication signals to and from the subscriber equipment;

wherein said plurality of communication signal generators include a video signal generator and a telephony signal generator, and the communication signals include video signals and telephony signals;

wherein said base unit is connected to a video signal source and a telephony signal source for supplying said video signals and said telephony signals, respectively, to said base unit;

wherein said base unit is configured to send said video and said telephony signals from said video and said telephony signal sources to the subscriber equipment at a higher data rate than a data rate of said video and said telephony signals received from the subscriber equipment;

wherein said base unit converts a data rate of said video and said telephony signals received from said video and said telephony signal sources to a lower data rate, and performs a multiplexing function on said video and said telephony signals to send said video and said telephony signals at said higher data rate than said data rate of said video and said telephony signals received from the subscriber equipment.

18. A base station apparatus as defined in claim 17 wherein said base unit includes a multiplexer for converting said data rate of said video and said telephony signals received from said video and said telephony signal sources to said lower data rate.

19. A base station apparatus as defined in claim 18 wherein said multiplexing function is performed by said video signal generator and said telephony signal generator.

28. Local multipoint distribution service base station apparatus for sending and receiving communication signals to and from a plurality of remotely located subscriber equipment, comprising:

a base unit including at least one rack, said rack configured to receive a plurality of subracks;

a plurality of communication signal generators arranged and configured to be received by each of said plurality of subracks, wherein each of said plurality of communication signal generators is implemented as a replaceable module each with a different functionality and a different physical structure, the replaceable modules being grouped together according to their respective functionalities, the replaceable modules operable to be removed and installed according to a desired subscriber capacity;

a transmitting/receiving unit operationally connected to said base unit for transmitting and receiving the communication signals to and from the subscriber equipment;

wherein said plurality of communication signal generators include a telephony signal generator and the communication signals are telephony signals;

wherein said base unit is connected to a telephony signal source for supplying said telephone signals to said base unit;

wherein said base unit is configured to send said telephony signals from said telephony signal source to the subscriber equipment at a higher data rate than a data rate of said telephony signals received from the subscriber equipment;

wherein said base unit converts a data rate of said telephony signals received from said telephony signal source to a lower data rate, and performs a multiplexing function on said telephony signals to send said telephony signals at said higher data rate than said data rate of said telephony signals received from the subscriber equipment.

29. A base station apparatus as defined in claim 28 wherein said base unit includes a multiplexer for converting said data rate of said telephony signals received from said telephony signal source to said lower data rate.

30. A base station apparatus as defined in claim 29 wherein said multiplexing function is performed by said telephony signal generator.

37. Local multipoint distribution service base station apparatus for sending and receiving communication signals to and from a plurality of remotely located subscriber equipment, comprising:

a base unit including at least one rack, said rack configured to receive a plurality of subracks;

a plurality of communication signal generators arranged and configured to be received by each of said plurality of subracks, wherein each of said plurality of communication signal generators is implemented as a replaceable module each with a different functionality and a different physical structure, the replaceable modules being grouped together according to their respective functionalities, the replaceable modules operable to be removed and installed according to a desired subscriber capacity;

a transmitting/receiving unit operationally connected to said base unit for transmitting and receiving the communication signals to and from the subscriber equipment;

wherein said plurality of communication signal generators include a video signal generator, and the communication signals are video signals;

wherein said base unit is connected to a video signal source for supplying said video signals to said base unit;

wherein said base unit is configured to send said video signals from said video signal source to the subscriber equipment at a higher data rate than a data rate of said video signals received from the subscriber equipment;

wherein said base unit converts a data rate of said video signals received from said video signal source to a lower data rate, and performs a multiplexing function on said video signals to send said video signals at said higher data rate than said data rate of said video signals received from the subscriber equipment.

38. A base station apparatus as defined in claim 37 wherein said base unit includes a multiplexer for converting said data rate of said video signals received from said video signal source to said lower data rate.

39. A base station apparatus as defined in claim 38 wherein said multiplexing function is performed by said video signal generator.

47. Local multipoint distribution service base station apparatus for sending and receiving communication signals to and from a plurality of remotely located subscriber equipment, comprising:

a base unit including at least one rack, said rack configured to receive a plurality of subracks;

a plurality of communication signal generators arranged and configured to be received by each of said plurality of subracks, wherein each of said plurality of communication signal generators is implemented as a replaceable module each with a different functionality and a different physical structure, the replaceable modules being grouped together according to their respective functionalities, the replaceable modules operable to be removed and installed according to a desired subscriber capacity;

a transmitting/receiving unit operationally connected to said base unit for transmitting and receiving the communication signals to and from the subscriber equipment;

wherein said base station is configured to receive the communication signals from and provide the communication signals to the subscriber equipment in a selected one of a synchronous continuous format and an asynchronous burst format.

48. A local multipoint distribution service base station apparatus for sending and receiving communication signals to and from subscriber equipment, comprising:

a communication signal generator for generating the communication signals;

a transmitting/receiving unit operationally connected to said communication signal generator and configured to transmit/receive the communication signals to and from the subscriber equipment; and

an antenna unit operatively connected to said transmitting/receiving unit for directing and receiving the communication signals to and from the subscriber equipment;

wherein said antenna unit and said transmitting/receiving unit are arranged and configured into an integrated assembly.

49. A base station apparatus as defined in claim 48 wherein said antenna unit includes a radome/polarizer and an antenna.

50. Local multipoint distribution service base station apparatus for sending and receiving communication signals to and from remotely located subscriber equipment, comprising:

a base unit including at least one rack, said rack configured to receive at least one subrack;

at least one communication signal generator arranged and configured to be received in said at least one subrack;

a transmitting/receiving unit operationally connected to said base unit for transmitting and receiving the communication signals to and from the subscriber equipment; and

an antenna unit operatively connected to said transmitting/receiving unit for directing and receiving the communication signals to and from the subscriber equipment;

wherein said antenna unit and said transmitting/receiving unit are arranged and configured into an integrated assembly.