Local multipoint distribution service base station apparatus

• US 6,839,361 B2
• Filed: 07/01/2002
• Issued: 01/04/2005
• 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, Burt, Donald G., Marin, James Scott, Myers, William K., Brobston, Michael L.
• Primary Examiner(s): PHAN, MAN U
• Application Number:
  US10/188,008
• Publication Number:
  US 20020174441A1
• Time in Patent Office: 918 Days
• Field of Search: 370/347, 370/350, 370/465, 370/432, 370/443, 370/487, 370/535, 370/536, 370/328, 370/329, 370/330, 455/422, 455/426, 455/450, 455/453, 725/64, 725/68, 725/71, 725/126, 725/138, 359/109, 359/123, 359/113, 359/115
• US Class Current: 370/535
• 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. A method for sending communication signals to remotely located subscriber equipment, comprising:

receiving video signals from a video source and telephony signals from a telephony source multiplexed onto a single transmission stream, the telephony signals including voice signals;

extracting the video signals from the transmission stream;

placing the video signals into an asymmetric data stream;

extracting the telephony signals from the transmission stream;

placing the telephony signals into an asymmetric data stream;

modulating the telephony and video signals onto an intermediate transmission frequency;

converting the intermediate transmission frequency to a radio transmission frequency in order to transmit the telephony and video signals.

2. The method of claim 1, wherein the intermediate transmission frequency provides isolation between telephony and video signal processing and transmission.

3. The method of claim 1, further comprising:

providing a single frequency reference to process the telephony and video signals.

4. The method of claim 1, wherein the telephony and video signals are modulated using quadrature phase shift key modulation.

5. The method of claim 1, further comprising:

implementing each telephony and video signal processing functionality as a separate replaceable module with different physical structures;

grouping the replaceable modules together according to their respective functionalities.

6. A method for receiving communication signals from remotely located subscriber equipment, comprising:

receiving telephony signals in an asymmetric data stream on an intermediate transmission frequency;

demodulating the telephony signals from the intermediate transmission frequency;

reformatting the telephony signals into a symmetric format;

multiplexing the telephony signals;

transmitting the telephony signals to a central office;

receiving the telephony signals on a radio transmission frequency;

converting the radio transmission frequency to an intermediate transmission frequency.

7. The method of claim 6, wherein the telephony signals in the asymmetric data stream are received in either a continuous or burst format.

8. The method of claim 6, further comprising:

providing a single frequency reference to process the telephony signals.

9. The method of claim 6, wherein the intermediate transmission frequency isolates telephony signal processing from telephony signal reception.

10. The method of claim 6, further comprising:

implementing each telephony signal processing functionality as a separate replaceable module with different physical structures;

grouping the replaceable modules together according to their respective functionalities.

11. A system for sending communication signals to remotely located subscriber equipment, comprising:

means for receiving video signals from a video source and telephony signals from a telephony source multiplexed onto a single transmission stream, the telephony signals including voice signals;

means for extracting the video signals from the transmission stream;

means for placing the video signals into an asymmetric data stream;

means for extracting the telephony signals from the transmission stream;

means for placing the telephony signals into an asymmetric data stream;

means for modulating the telephony and video signals onto an intermediate transmission frequency;

means for converting the intermediate transmission frequency to a radio transmission frequency in order to transmit the telephony and video signals.

12. The system of claim 13, wherein the intermediate transmission frequency provides isolation between telephony and video signal processing and transmission.

13. The system of claim 11, further comprising:

means for providing a single frequency reference to process the telephony and video signals.

14. The system of claim 11, wherein the telephony and video signals are modulated using quadrature phase shift key modulation.

15. The system of claim 11, further comprising:

means for implementing each telephony and video signal processing functionality as a separate replaceable module with different physical structures;

means for grouping the replaceable modules together according to their respective functionalities.

16. A system for receiving communication signals from remotely located subscriber equipment, comprising:

means for receiving telephony signals in an asymmetric data stream on an intermediate transmission frequency, the telephony signals including voice signals;

means for demodulating the telephony signals from the intermediate transmission frequency;

means for reformatting the telephony signals into a symmetric format;

means for multiplexing the telephony signals;

means for transmitting the telephony signals to a central office;

means for receiving the telephony signals on a radio transmission frequency;

means for converting the radio transmission frequency to an intermediate transmission frequency.

17. The system of claim 16, wherein the telephony signals in the asymmetric data stream are received in either a continuous or burst format.

18. The system of claim 16, further comprising:

means for providing a single frequency reference to process the telephony signals.

19. The system of claim 16, wherein the intermediate transmission frequency isolates telephony signal processing from telephony signal reception.

20. The system of claim 16, further comprising:

means for implementing each telephony signal processing functionality as a separate replaceable module with different physical structures;

means for grouping the replaceable modules together according to their respective functionalities.